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Spring--SSH整合

SSH集成

1、创建maven项目并导入pom依赖

pom.xml

注：建议分步骤导入，以免在导入的时候导致jar包下载出现问题

  1 <project xmlns="http://maven.apache.org/POM/4.0.0"
  2     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  4     <modelVersion>4.0.0</modelVersion>
  5     <groupId>com.yuan</groupId>
  6     <artifactId>T226_SSH</artifactId>
  7     <packaging>war</packaging>
  8     <version>0.0.1-SNAPSHOT</version>
  9     <name>T226_SSH Maven Webapp</name>
 10     <url>http://maven.apache.org</url>
 11     <properties>
 12         <hibernate.version>5.2.12.Final</hibernate.version>
 13         <mysql.version>5.1.44</mysql.version>
 14         <spring.version>5.0.1.RELEASE</spring.version>
 15         <struts2.version>2.5.13</struts2.version>
 16         <slf4j.version>1.7.7</slf4j.version>
 17         <log4j2.version>2.9.1</log4j2.version>
 18         <disruptor.version>3.2.0</disruptor.version>
 19         <junit.version>4.12</junit.version>
 20         <javax.servlet.version>4.0.0</javax.servlet.version>
 21         <jstl.version>1.2</jstl.version>
 22         <standard.version>1.1.2</standard.version>
 23         <tomcat-jsp-api.version>8.0.47</tomcat-jsp-api.version>
 24     </properties>
 25     <dependencies>
 26         <!-- 1、导入hibernate依赖 -->
 27         <dependency>
 28             <groupId>org.hibernate</groupId>
 29             <artifactId>hibernate-core</artifactId>
 30             <version>${hibernate.version}</version>
 31         </dependency>
 32         <dependency>
 33             <groupId>org.hibernate</groupId>
 34             <artifactId>hibernate-c3p0</artifactId>
 35             <version>${hibernate.version}</version>
 36         </dependency>
 37         <dependency>
 38             <groupId>org.hibernate</groupId>
 39             <artifactId>hibernate-ehcache</artifactId>
 40             <version>${hibernate.version}</version>
 41         </dependency>
 42         <dependency>
 43             <groupId>mysql</groupId>
 44             <artifactId>mysql-connector-java</artifactId>
 45             <version>${mysql.version}</version>
 46         </dependency>
 47 
 48         <!-- 2、导入spring依赖 -->
 49         <dependency>
 50             <groupId>org.springframework</groupId>
 51             <artifactId>spring-context</artifactId>
 52             <version>${spring.version}</version>
 53         </dependency>
 54         <dependency>
 55             <groupId>org.springframework</groupId>
 56             <artifactId>spring-orm</artifactId>
 57             <version>${spring.version}</version>
 58         </dependency>
 59         <dependency>
 60             <groupId>org.springframework</groupId>
 61             <artifactId>spring-web</artifactId>
 62             <version>${spring.version}</version>
 63         </dependency>
 64         <dependency>
 65             <groupId>org.springframework</groupId>
 66             <artifactId>spring-aspects</artifactId>
 67             <version>${spring.version}</version>
 68         </dependency>
 69 
 70         <!-- 3、导入struts2依赖 -->
 71         <dependency>
 72             <groupId>org.apache.struts</groupId>
 73             <artifactId>struts2-core</artifactId>
 74             <version>${struts2.version}</version>
 75         </dependency>
 76         <dependency>
 77             <groupId>org.apache.struts</groupId>
 78             <artifactId>struts2-spring-plugin</artifactId>
 79             <version>${struts2.version}</version>
 80         </dependency>
 81 
 82 
 83         <!-- 4、导入日志系统依赖 -->
 84         <!-- log配置：Log4j2 + Slf4j -->
 85         <!-- slf4j核心包 -->
 86         <dependency>
 87             <groupId>org.slf4j</groupId>
 88             <artifactId>slf4j-api</artifactId>
 89             <version>${slf4j.version}</version>
 90         </dependency>
 91         <dependency>
 92             <groupId>org.slf4j</groupId>
 93             <artifactId>jcl-over-slf4j</artifactId>
 94             <version>${slf4j.version}</version>
 95             <scope>runtime</scope>
 96         </dependency>
 97 
 98         <!--用于与slf4j保持桥接 -->
 99         <dependency>
100             <groupId>org.apache.logging.log4j</groupId>
101             <artifactId>log4j-slf4j-impl</artifactId>
102             <version>${log4j2.version}</version>
103         </dependency>
104 
105         <!--核心log4j2jar包 -->
106         <dependency>
107             <groupId>org.apache.logging.log4j</groupId>
108             <artifactId>log4j-api</artifactId>
109             <version>${log4j2.version}</version>
110         </dependency>
111         <dependency>
112             <groupId>org.apache.logging.log4j</groupId>
113             <artifactId>log4j-core</artifactId>
114             <version>${log4j2.version}</version>
115         </dependency>
116 
117         <!--web工程需要包含log4j-web，非web工程不需要 -->
118         <dependency>
119             <groupId>org.apache.logging.log4j</groupId>
120             <artifactId>log4j-web</artifactId>
121             <version>${log4j2.version}</version>
122             <scope>runtime</scope>
123         </dependency>
124         <!--需要使用log4j2的AsyncLogger需要包含disruptor -->
125         <dependency>
126             <groupId>com.lmax</groupId>
127             <artifactId>disruptor</artifactId>
128             <version>${disruptor.version}</version>
129         </dependency>
130 
131 
132         <!-- 5、other -->
133         <!-- 5.1、junit -->
134         <dependency>
135             <groupId>junit</groupId>
136             <artifactId>junit</artifactId>
137             <version>${junit.version}</version>
138             <scope>test</scope>
139         </dependency>
140 
141         <!-- 5.2、servlet -->
142         <dependency>
143             <groupId>javax.servlet</groupId>
144             <artifactId>javax.servlet-api</artifactId>
145             <version>${javax.servlet.version}</version>
146             <scope>provided</scope>
147         </dependency>
148 
149         <!-- 5.3、jstl、standard -->
150         <dependency>
151             <groupId>jstl</groupId>
152             <artifactId>jstl</artifactId>
153             <version>${jstl.version}</version>
154         </dependency>
155         <dependency>
156             <groupId>taglibs</groupId>
157             <artifactId>standard</artifactId>
158             <version>${standard.version}</version>
159         </dependency>
160 
161         <!-- 5.4、tomcat-jsp-api -->
162         <dependency>
163             <groupId>org.apache.tomcat</groupId>
164             <artifactId>tomcat-jsp-api</artifactId>
165             <version>${tomcat-jsp-api.version}</version>
166         </dependency>
167 
168 
169 
170     </dependencies>
171     <build>
172         <finalName>T226_SSH</finalName>
173         <plugins>
174             <plugin>
175                 <groupId>org.apache.maven.plugins</groupId>
176                 <artifactId>maven-compiler-plugin</artifactId>
177                 <version>3.7.0</version>
178                 <configuration>
179                     <source>1.8</source>
180                     <target>1.8</target>
181                     <encoding>UTF-8</encoding>
182                 </configuration>
183             </plugin>
184         </plugins>
185     </build>
186 </project>

2、导入外部xml

2.1数据库连接信息 db.properties

 1 db.username=root
 2 db.password=123
 3 db.driverClass=com.mysql.jdbc.Driver
 4 db.jdbcUrl=jdbc:mysql://127.0.0.1:3306/xm_sc?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT
 5 db.initialPoolSize=10
 6 db.maxPoolSize=20
 7 db.minPoolSize=5
 8 db.maxIdleTime=60
 9 db.acquireIncrement=5
10 db.maxStatements=0
11 db.idleConnectionTestPeriod=60
12 db.acquireRetryAttempts=30
13 db.breakAfterAcquireFailure=true
14 db.testConnectionOnCheckout=false

2.2 导入ehcache.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3          xsi:noNamespaceSchemaLocation="http://ehcache.org/ehcache.xsd"
 4          updateCheck="false">
 5     <!--磁盘存储:将缓存中暂时不使用的对象,转移到硬盘,类似于Windows系统的虚拟内存-->
 6     <!--path:指定在硬盘上存储对象的路径-->
 7     <!--java.io.tmpdir 是默认的临时文件路径。 可以通过如下方式打印出具体的文件路径 System.out.println(System.getProperty("java.io.tmpdir"));-->
 8     <diskStore path="java.io.tmpdir"/>
 9 
10 
11     <!--defaultCache：默认的管理策略-->
12     <!--eternal：设定缓存的elements是否永远不过期。如果为true，则缓存的数据始终有效，如果为false那么还要根据timeToIdleSeconds，timeToLiveSeconds判断-->
13     <!--maxElementsInMemory：在内存中缓存的element的最大数目-->
14     <!--overflowToDisk：如果内存中数据超过内存限制，是否要缓存到磁盘上-->
15     <!--diskPersistent：是否在磁盘上持久化。指重启jvm后，数据是否有效。默认为false-->
16     <!--timeToIdleSeconds：对象空闲时间(单位：秒)，指对象在多长时间没有被访问就会失效。只对eternal为false的有效。默认值0，表示一直可以访问-->
17     <!--timeToLiveSeconds：对象存活时间(单位：秒)，指对象从创建到失效所需要的时间。只对eternal为false的有效。默认值0，表示一直可以访问-->
18     <!--memoryStoreEvictionPolicy：缓存的3 种清空策略-->
19     <!--FIFO：first in first out (先进先出)-->
20     <!--LFU：Less Frequently Used (最少使用).意思是一直以来最少被使用的。缓存的元素有一个hit 属性，hit 值最小的将会被清出缓存-->
21     <!--LRU：Least Recently Used(最近最少使用). (ehcache 默认值).缓存的元素有一个时间戳，当缓存容量满了，而又需要腾出地方来缓存新的元素的时候，那么现有缓存元素中时间戳离当前时间最远的元素将被清出缓存-->
22     <defaultCache eternal="false" maxElementsInMemory="1000" overflowToDisk="false" diskPersistent="false"
23                   timeToIdleSeconds="0" timeToLiveSeconds="600" memoryStoreEvictionPolicy="LRU"/>
24 
25 
26     <!--name： Cache的名称，必须是唯一的(ehcache会把这个cache放到HashMap里)-->
27     <cache name="stuCache" eternal="false" maxElementsInMemory="100"
28            overflowToDisk="false" diskPersistent="false" timeToIdleSeconds="0"
29            timeToLiveSeconds="300" memoryStoreEvictionPolicy="LRU"/>
30 </ehcache>

2.3 导入log4j2.xml

  1 <?xml version="1.0" encoding="UTF-8"?>
  2 
  3 <!-- status : 指定log4j本身的打印日志的级别.ALL< Trace < DEBUG < INFO < WARN < ERROR 
  4     < FATAL < OFF。 monitorInterval : 用于指定log4j自动重新配置的监测间隔时间，单位是s,最小是5s. -->
  5 <Configuration status="WARN" monitorInterval="30">
  6     <Properties>
  7         <!-- 配置日志文件输出目录 ${sys:user.home} -->
  8         <Property name="LOG_HOME">/root/workspace/lucenedemo/logs</Property>
  9         <property name="ERROR_LOG_FILE_NAME">/root/workspace/lucenedemo/logs/error</property>
 10         <property name="WARN_LOG_FILE_NAME">/root/workspace/lucenedemo/logs/warn</property>
 11         <property name="PATTERN">%d{yyyy-MM-dd HH:mm:ss.SSS} [%t-%L] %-5level %logger{36} - %msg%n</property>
 12     </Properties>
 13 
 14     <Appenders>
 15         <!--这个输出控制台的配置 -->
 16         <Console name="Console" target="SYSTEM_OUT">
 17             <!-- 控制台只输出level及以上级别的信息(onMatch),其他的直接拒绝(onMismatch) -->
 18             <ThresholdFilter level="trace" onMatch="ACCEPT"
 19                 onMismatch="DENY" />
 20             <!-- 输出日志的格式 -->
 21             <!-- %d{yyyy-MM-dd HH:mm:ss, SSS} : 日志生产时间 %p : 日志输出格式 %c : logger的名称 
 22                 %m : 日志内容，即 logger.info("message") %n : 换行符 %C : Java类名 %L : 日志输出所在行数 %M 
 23                 : 日志输出所在方法名 hostName : 本地机器名 hostAddress : 本地ip地址 -->
 24             <PatternLayout pattern="${PATTERN}" />
 25         </Console>
 26 
 27         <!--文件会打印出所有信息，这个log每次运行程序会自动清空，由append属性决定，这个也挺有用的，适合临时测试用 -->
 28         <!--append为TRUE表示消息增加到指定文件中，false表示消息覆盖指定的文件内容，默认值是true -->
 29         <File name="log" fileName="logs/test.log" append="false">
 30             <PatternLayout
 31                 pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
 32         </File>
 33         <!-- 这个会打印出所有的info及以下级别的信息，每次大小超过size， 则这size大小的日志会自动存入按年份-月份建立的文件夹下面并进行压缩，作为存档 -->
 34         <RollingFile name="RollingFileInfo" fileName="${LOG_HOME}/info.log"
 35             filePattern="${LOG_HOME}/$${date:yyyy-MM}/info-%d{yyyy-MM-dd}-%i.log">
 36             <!--控制台只输出level及以上级别的信息（onMatch），其他的直接拒绝（onMismatch） -->
 37             <ThresholdFilter level="info" onMatch="ACCEPT"
 38                 onMismatch="DENY" />
 39             <PatternLayout
 40                 pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
 41             <Policies>
 42                 <!-- 基于时间的滚动策略，interval属性用来指定多久滚动一次，默认是1 hour。 modulate=true用来调整时间：比如现在是早上3am，interval是4，那么第一次滚动是在4am，接着是8am，12am...而不是7am. -->
 43                 <!-- 关键点在于 filePattern后的日期格式，以及TimeBasedTriggeringPolicy的interval， 日期格式精确到哪一位，interval也精确到哪一个单位 -->
 44                 <!-- log4j2的按天分日志文件 : info-%d{yyyy-MM-dd}-%i.log -->
 45                 <TimeBasedTriggeringPolicy interval="1"
 46                     modulate="true" />
 47                 <!-- SizeBasedTriggeringPolicy:Policies子节点， 基于指定文件大小的滚动策略，size属性用来定义每个日志文件的大小. -->
 48                 <!-- <SizeBasedTriggeringPolicy size="2 kB" /> -->
 49             </Policies>
 50         </RollingFile>
 51 
 52         <RollingFile name="RollingFileWarn" fileName="${WARN_LOG_FILE_NAME}/warn.log"
 53             filePattern="${WARN_LOG_FILE_NAME}/$${date:yyyy-MM}/warn-%d{yyyy-MM-dd}-%i.log">
 54             <ThresholdFilter level="warn" onMatch="ACCEPT"
 55                 onMismatch="DENY" />
 56             <PatternLayout
 57                 pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
 58             <Policies>
 59                 <TimeBasedTriggeringPolicy />
 60                 <SizeBasedTriggeringPolicy size="2 kB" />
 61             </Policies>
 62             <!-- DefaultRolloverStrategy属性如不设置，则默认为最多同一文件夹下7个文件，这里设置了20 -->
 63             <DefaultRolloverStrategy max="20" />
 64         </RollingFile>
 65 
 66         <RollingFile name="RollingFileError" fileName="${ERROR_LOG_FILE_NAME}/error.log"
 67             filePattern="${ERROR_LOG_FILE_NAME}/$${date:yyyy-MM}/error-%d{yyyy-MM-dd-HH-mm}-%i.log">
 68             <ThresholdFilter level="error" onMatch="ACCEPT"
 69                 onMismatch="DENY" />
 70             <PatternLayout
 71                 pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
 72             <Policies>
 73                 <!-- log4j2的按分钟 分日志文件 : warn-%d{yyyy-MM-dd-HH-mm}-%i.log -->
 74                 <TimeBasedTriggeringPolicy interval="1"
 75                     modulate="true" />
 76                 <!-- <SizeBasedTriggeringPolicy size="10 MB" /> -->
 77             </Policies>
 78         </RollingFile>
 79 
 80     </Appenders>
 81 
 82     <!--然后定义logger，只有定义了logger并引入的appender，appender才会生效 -->
 83     <Loggers>
 84         <!--过滤掉spring和mybatis的一些无用的DEBUG信息 -->
 85         <logger name="org.springframework" level="INFO"></logger>
 86         <logger name="org.mybatis" level="INFO"></logger>
 87 
 88         <!-- 第三方日志系统 -->
 89         <logger name="org.springframework" level="ERROR" />
 90         <logger name="org.hibernate" level="ERROR" />
 91         <logger name="org.apache.struts2" level="ERROR" />
 92         <logger name="com.opensymphony.xwork2" level="ERROR" />
 93         <logger name="org.jboss" level="ERROR" />
 94 
 95 
 96         <!-- 配置日志的根节点 -->
 97         <root level="all">
 98             <appender-ref ref="Console" />
 99             <appender-ref ref="RollingFileInfo" />
100             <appender-ref ref="RollingFileWarn" />
101             <appender-ref ref="RollingFileError" />
102         </root>
103 
104     </Loggers>
105 
106 </Configuration>

2.4 spring-book.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4    xmlns:context="http://www.springframework.org/schema/context"
 5    xmlns:tx="http://www.springframework.org/schema/tx"
 6    xmlns:aop="http://www.springframework.org/schema/aop"
 7    xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
 8        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
 9        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
10        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
11  
12      <bean class="com.yuan.book.dao.BookDao" parent="baseDao" id="bookDao"></bean>
13      <bean class="com.yuan.book.biz.impl.BookBizImpl" parent="baseBiz" id="bookBiz">
14          <property name="bookDao" ref="bookDao"></property>
15      </bean>
16      <bean class="com.yuan.book.web.BookAction" parent="baseAction" id="bookAction">
17          <property name="bookBiz" ref="bookBiz"></property>
18      </bean>
19      
20 </beans>

2.5 spring-context.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4    xmlns:context="http://www.springframework.org/schema/context"
 5    xmlns:tx="http://www.springframework.org/schema/tx"
 6    xmlns:aop="http://www.springframework.org/schema/aop"
 7    xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
 8        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
 9        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
10        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
11  
12          <import resource="spring-hibernate.xml"/>
13          <import resource="spring-book.xml"/>
14  
15 </beans>

2.6 集成hibernate

  1 <?xml version="1.0" encoding="UTF-8"?>
  2 <beans xmlns="http://www.springframework.org/schema/beans"
  3    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4    xmlns:context="http://www.springframework.org/schema/context"
  5    xmlns:tx="http://www.springframework.org/schema/tx"
  6    xmlns:aop="http://www.springframework.org/schema/aop"
  7    xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
  8        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
  9        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
 10        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
 11  
 12      <!-- 
 13          1、注册数据库连接信息文件
 14          2、配置连接池
 15          3、配置sessionfactory
 16          4、配置事务
 17          5、配置切面
 18          6、配置通用模块
 19       -->
 20  <!-- 1、注册jdbc相关的配置文件 -->
 21     <context:property-placeholder location="classpath:db.properties" />
 22 
 23     <!-- 配置c3p0连接池 -->
 24     <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
 25         <property name="user" value="${db.username}"></property>
 26         <property name="password" value="${db.password}"></property>
 27         <property name="driverClass" value="${db.driverClass}"></property>
 28         <property name="jdbcUrl" value="${db.jdbcUrl}"></property>
 29 
 30         <!--初始化时获取的连接数，取值应在minPoolSize与maxPoolSize之间。Default: 3 -->
 31         <property name="initialPoolSize" value="${db.initialPoolSize}"></property>
 32         <!--连接池中保留的最大连接数。Default: 15 -->
 33         <property name="maxPoolSize" value="${db.maxPoolSize}"></property>
 34         <!--连接池中保留的最小连接数。 -->
 35         <property name="minPoolSize" value="${db.minPoolSize}" />
 36         <!--最大空闲时间,60秒内未使用则连接被丢弃。若为0则永不丢弃。Default: 0 -->
 37         <property name="maxIdleTime" value="${db.maxIdleTime}" />
 38 
 39         <!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->
 40         <property name="acquireIncrement" value="${db.acquireIncrement}" />
 41 
 42         <!--JDBC的标准参数，用以控制数据源内加载的PreparedStatements数量。但由于预缓存的statements 属于单个connection而不是整个连接池。 
 43             所以设置这个参数需要考虑到多方面的因素。如果maxStatements与maxStatementsPerConnection均为0，则缓存被关闭。Default: 
 44             0 -->
 45         <property name="maxStatements" value="${db.maxStatements}" />
 46 
 47         <!--每60秒检查所有连接池中的空闲连接。Default: 0 -->
 48         <property name="idleConnectionTestPeriod" value="${db.idleConnectionTestPeriod}" />
 49 
 50         <!--定义在从数据库获取新连接失败后重复尝试的次数。Default: 30 -->
 51         <property name="acquireRetryAttempts" value="${db.acquireRetryAttempts}" />
 52 
 53         <!--获取连接失败将会引起所有等待连接池来获取连接的线程抛出异常。但是数据源仍有效 保留，并在下次调用getConnection()的时候继续尝试获取连接。 
 54             如果设为true，那么在尝试 获取连接失败后该数据源将申明已断开并永久关闭。Default: false -->
 55         <property name="breakAfterAcquireFailure" value="${db.breakAfterAcquireFailure}" />
 56 
 57         <!--因性能消耗大请只在需要的时候使用它。如果设为true那么在每个connection提交的 时候都将校验其有效性。建议使用idleConnectionTestPeriod 
 58             或automaticTestTable 等方法来提升连接测试的性能。Default: false -->
 59         <property name="testConnectionOnCheckout" value="${db.breakAfterAcquireFailure}" />
 60     </bean>
 61 
 62     <!-- 3、配置sessionfactory相关信息 -->
 63     <bean id="sessionFactory"
 64         class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
 65         <!-- 数据源 -->
 66         <property name="dataSource">
 67             <ref bean="dataSource" />
 68         </property>
 69         <!-- hibernate相关属性 -->
 70         <property name="hibernateProperties">
 71             <props>
 72                 <prop key="dialect">org.hibernate.dialect.MySQLDialect</prop>
 73                 <!--spring与Hibernate集成无法显示sql语句问题，请见集成后hibernate无法显示sql语句.txt -->
 74                 <prop key="hibernate.show_sql">true</prop>
 75                 <prop key="hibernate.format_sql">true</prop>
 76             </props>
 77         </property>
 78         <!-- 实体映射文件 -->
 79         <property name="mappingResources">
 80             <list>
 81                 <value>com/yuan/book/entity/book.hbm.xml</value>
 82             </list>
 83         </property>
 84     </bean>
 85 
 86     <!-- 4、配置事务 -->
 87     <!--声明式事务配置开始 -->
 88     <!-- 
 89         静态代理：
 90             一个代理对象->一个目标对象
 91             BookProxy(BookBizImpl+myMethodBeforeAdvice)->bookBiz
 92             OrderProxy(OrderBizImpl+myMethodBeforeAdvice2)->    OrderBiz
 93         
 94         动态代理：
 95             一个代理对象->多个目标对象
 96      -->
 97     
 98     <!--1) 开启自动代理 -->
 99     <aop:aspectj-autoproxy />
100 
101     <!--2) 事务管理器 -->
102     <bean id="transactionManager"
103         class="org.springframework.orm.hibernate5.HibernateTransactionManager">
104         <property name="sessionFactory" ref="sessionFactory" />
105     </bean>
106 
107     <!--3) 定义事务特性 -->
108     <tx:advice id="txAdvice" transaction-manager="transactionManager">
109         <tx:attributes>
110             <tx:method name="add*" propagation="REQUIRED" />
111             <tx:method name="save*" propagation="REQUIRED" />
112             <tx:method name="insert*" propagation="REQUIRED" />
113 
114             <tx:method name="edit*" propagation="REQUIRED" />
115             <tx:method name="update*" propagation="REQUIRED" />
116 
117             <tx:method name="del*" propagation="REQUIRED" />
118             <tx:method name="remove*" propagation="REQUIRED" />
119 
120             <tx:method name="load*" propagation="REQUIRED" read-only="true" />
121             <tx:method name="list*" propagation="REQUIRED" read-only="true" />
122             <tx:method name="select*" propagation="REQUIRED" read-only="true" />
123             <tx:method name="query*" propagation="REQUIRED" read-only="true" />
124 
125             <tx:method name="do*" propagation="REQUIRED" />
126         </tx:attributes>
127     </tx:advice>
128 
129     <!--4) 定义切入点 -->
130     <aop:config>
131         <!-- pointcut属性用来定义一个切入点，分成四个部分理解 [* ][*..][*Biz][.*(..)] -->
132         <!-- A： 返回类型，*表示返回类型不限 -->
133         <!-- B： 包名，*..表示包名不限 -->
134         <!-- C： 类或接口名，*Biz表示类或接口必须以Biz结尾 -->
135         <!-- D： 方法名和参数，*(..)表示方法名不限，参数类型和个数不限 -->
136         <aop:advisor advice-ref="txAdvice" pointcut="execution(* *..*Biz.*(..))" />
137     </aop:config>
138     <!-- 声明式事务配置结束 -->
139     
140     <!-- 5、配置HibernateTemplate 可以看成session -->
141     <bean class="org.springframework.orm.hibernate5.HibernateTemplate" id="hibernateTemplate">
142         <property name="sessionFactory" ref="sessionFactory"></property>
143     </bean>
144     <!-- 6、分模块开发（只配置base模块） -->
145     <bean class="com.yuan.base.entity.BaseEntity" abstract="true" id="baseEntity"></bean>
146     <bean class="com.yuan.base.dao.BaseDao" abstract="true" id="baseDao" >
147         <property name="hibernateTemplate" ref="hibernateTemplate"></property>
148     </bean>
149     <bean class="com.yuan.base.biz.BaseBiz" abstract="true" id="baseBiz"></bean>
150     <bean class="com.yuan.base.web.BaseAction" abstract="true" id="baseAction"></bean>
151  
152 </beans>

2.7 struts-base.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!DOCTYPE struts PUBLIC
 3     "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
 4     "http://struts.apache.org/dtds/struts-2.5.dtd">
 5 <struts>
 6     <constant name="struts.i18n.encoding" value="UTF-8" />
 7     <constant name="struts.devMode" value="true" />
 8     <constant name="struts.configuration.xml.reload" value="true" />
 9     <constant name="struts.i18n.reload" value="true" />
10     <constant name="struts.enable.DynamicMethodInvocation" value="true" />
11 
12     <package name="base" extends="struts-default" abstract="true">
13         <global-allowed-methods>regex:.*</global-allowed-methods>
14     </package>
15 </struts>

2.8 struts-book.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!DOCTYPE struts PUBLIC
 3     "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
 4     "http://struts.apache.org/dtds/struts-2.5.dtd">
 5 <struts>
 6     <package name="book" extends="base" namespace="/book">
 7         <action name="/book_*" class="bookAction" method="{1}">
 8         </action>
 9     </package>
10 </struts>

2.9 struts.xml

1 <?xml version="1.0" encoding="UTF-8"?>
2 <!DOCTYPE struts PUBLIC
3     "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
4     "http://struts.apache.org/dtds/struts-2.5.dtd">
5 <struts>
6     <include file="struts-default.xml"></include>
7     <include file="struts-base.xml"></include>
8     <include file="struts-book.xml"></include>
9 </struts>

最后一个web.xml配置

 1 <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
 2          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3          xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
 4          version="3.1">
 5   <display-name>Archetype Created Web Application</display-name>
 6   
 7   <!-- 1、整合spring -->
 8     <context-param>
 9         <param-name>contextConfigLocation</param-name>
10         <param-value>classpath:spring-context.xml</param-value>
11     </context-param>
12     <listener>
13         <listener-class>
14             org.springframework.web.context.ContextLoaderListener
15         </listener-class>
16     </listener>
17     <!-- 2、整合struts2 -->
18     <filter>
19         <filter-name>struts2</filter-name>
20         <filter-class>
21             org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter
22         </filter-class>
23     </filter>
24     <filter-mapping>
25         <filter-name>struts2</filter-name>
26         <url-pattern>*.action</url-pattern>
27     </filter-mapping>
28 
29     <!-- 3、添加过滤器 -->
30     <filter>
31         <filter-name>encodingFilter</filter-name>
32         <filter-class>
33             org.springframework.web.filter.CharacterEncodingFilter
34         </filter-class>
35         <async-supported>true</async-supported>
36         <init-param>
37             <param-name>encoding</param-name>
38             <param-value>UTF-8</param-value>
39         </init-param>
40     </filter>
41     <filter-mapping>
42         <filter-name>encodingFilter</filter-name>
43         <url-pattern>/*</url-pattern>
44     </filter-mapping>
45   
46 </web-app>

3. 程序代码的分层

3.1 base模块

3.1.1 biz接口--BaseBiz

只需创建就可以了，后期不需要进行任何操作

package com.yuan.base.biz;

public interface BaseBiz {
    
    
}

3.1.2 dao层--BaseDao

 1 package com.yuan.base.dao;
 2 
 3 import java.io.Serializable;
 4 import java.util.Collection;
 5 import java.util.List;
 6 import java.util.Map;
 7 
 8 import org.hibernate.Session;
 9 import org.hibernate.query.Query;
10 import org.springframework.orm.hibernate5.support.HibernateDaoSupport;
11 
12 import com.yuan.base.util.PageBean;
13 
14 public class BaseDao extends HibernateDaoSupport implements Serializable {
15 
16     // public int add() {
17     // return getHibernateTemplate().save(entity);
18     // }
19 
20     public void setParam(Query query, Map<String, Object> map) {
21         if (map == null || map.size() < 1) {
22             return;
23         }
24         Object value = null;
25         for (Map.Entry<String, Object> entry : map.entrySet()) {
26             value = entry.getValue();
27             if (value instanceof Collection) {
28                 query.setParameterList(entry.getKey(), (Collection) value);
29             } else if (value instanceof Object[]) {
30                 query.setParameterList(entry.getKey(), (Object[]) value);
31             } else {
32                 query.setParameter(entry.getKey(), value);
33             }
34         }
35     }
36 
37     public String getCountHql(String hql) {
38         int index = hql.toUpperCase().indexOf("FROM");
39         return "select count(*) " + hql.substring(index);
40     }
41 
42     /**
43      * 
44      * @param hql
45      *            已经拼装好的
46      * @param map
47      * @param pageBean
48      * @return
49      */
50     public List executeQuery(Session session, String hql, Map<String, Object> map, PageBean pageBean) {
51         if (pageBean != null && pageBean.isPagination()) {
52             String countHql = getCountHql(hql);
53             Query countQuery = session.createQuery(countHql);
54             this.setParam(countQuery, map);
55             pageBean.setTotal(countQuery.getSingleResult().toString());
56 
57             Query query = session.createQuery(hql);
58             this.setParam(query, map);
59             query.setFirstResult(pageBean.getStartIndex());
60             query.setMaxResults(pageBean.getRows());
61             List list = query.list();
62 
63             return list;
64         } else {
65             Query query = session.createQuery(hql);
66             this.setParam(query, map);
67             List list = query.list();
68 
69             return list;
70         }
71 
72     }
73 
74 }

3.1.3 实体--BaseEntity

 1     package com.yuan.base.entity;
 2 
 3 import java.io.Serializable;
 4 
 5 /**
 6  * 这里面存放所有实体类的共性属性
 7  *  jsp传递到后台的参数
 8  *  非数据库与表的映射关系字段属性
 9  * @author ly
10  *
11  */
12 public class BaseEntity implements Serializable {
13 
14     
15 }

3.1.4 工具类

PageBean

  1 package com.yuan.base.util;
  2 
  3 import java.util.HashMap;
  4 import java.util.Map;
  5 
  6 import javax.servlet.http.HttpServlet;
  7 import javax.servlet.http.HttpServletRequest;
  8 
  9 
 10 public class PageBean {
 11 
 12     private int page = 1;
 13 
 14     private int rows = 10;
 15 
 16     private int total = 0;
 17 
 18     private boolean pagination = true;
 19 
 20     private Map<String, String[]>  paMap = new HashMap<>();
 21     
 22     private String url;
 23     
 24     public void setRequest(HttpServletRequest req) {
 25         Map<String, String[]> parameterMap = req.getParameterMap();
 26         StringBuffer url = req.getRequestURL();
 27         
 28         this.setPaMap(req.getParameterMap());
 29         this.setUrl(req.getRequestURL().toString());
 30         
 31         this.setPage(req.getParameter("page"));
 32     }
 33     
 34     
 35     private void setPage(String page) {
 36         this.page = StringUtils.isNotBlank(page) ? Integer.valueOf(page):this.page;
 37         
 38     }
 39 
 40     
 41     public void setPagination(String pagination) {
 42         this.pagination = StringUtils.isNotBlank(pagination) ? !"false".equals(pagination):this.pagination;
 43         
 44     }
 45 
 46     
 47     public void setRows(String rows) {
 48         this.rows = StringUtils.isNotBlank(rows)?Integer.valueOf(rows):this.rows;
 49         
 50     }
 51 
 52     public Map<String, String[]> getPaMap() {
 53         return paMap;
 54     }
 55 
 56     public void setPaMap(Map<String, String[]> paMap) {
 57         this.paMap = paMap;
 58     }
 59 
 60     public String getUrl() {
 61         return url;
 62     }
 63 
 64     public void setUrl(String url) {
 65         this.url = url;
 66     }
 67 
 68     public PageBean() {
 69         super();
 70     }
 71 
 72     public int getPage() {
 73         return page;
 74     }
 75 
 76     public void setPage(int page) {
 77         this.page = page;
 78     }
 79 
 80     public int getRows() {
 81         return rows;
 82     }
 83 
 84     public void setRows(int rows) {
 85         this.rows = rows;
 86     }
 87 
 88     public int getTotal() {
 89         return total;
 90     }
 91 
 92     public void setTotal(int total) {
 93         this.total = total;
 94     }
 95 
 96     public void setTotal(String total) {
 97         this.total = Integer.parseInt(total);
 98     }
 99 
100     public boolean isPagination() {
101         return pagination;
102     }
103 
104     public void setPagination(boolean pagination) {
105         this.pagination = pagination;
106     }
107 
108     
109     public int getStartIndex() {
110         return (this.page - 1) * this.rows;
111     }
112 
113     @Override
114     public String toString() {
115         return "PageBean [page=" + page + ", rows=" + rows + ", total=" + total + ", pagination=" + pagination + "]";
116     }
117 
118     
119     public int getMaxPage() {
120         
121         return this.total % this.rows == 0 ? this.total / this.rows : this.total / this.rows+1;
122     }
123     
124     
125     public int getNexPage() {
126         
127         return this.page < this.getMaxPage() ? this.page+1 : this.page;
128     }
129     
130     
131     public int getPreviousPage() {
132         
133         return this.page > 1 ? this.page-1 : this.page; 
134     }
135     
136 }

StringUtils

 1 package com.yuan.base.util;
 2 
 3 public class StringUtils {
 4     // 私有的构造方法，保护此类不能在外部实例化
 5     private StringUtils() {
 6     }
 7 
 8     /**
 9      * 如果字符串等于null或去空格后等于""，则返回true，否则返回false
10      * 
11      * @param s
12      * @return
13      */
14     public static boolean isBlank(String s) {
15         boolean b = false;
16         if (null == s || s.trim().equals("")) {
17             b = true;
18         }
19         return b;
20     }
21     
22     /**
23      * 如果字符串不等于null或去空格后不等于""，则返回true，否则返回false
24      * 
25      * @param s
26      * @return
27      */
28     public static boolean isNotBlank(String s) {
29         return !isBlank(s);
30     }
31 
32 }

3.1.5 web层--BaseAction

 1 package com.yuan.base.web;
 2 
 3 import java.io.Serializable;
 4 
 5 import javax.servlet.ServletContext;
 6 import javax.servlet.http.HttpServletRequest;
 7 import javax.servlet.http.HttpServletResponse;
 8 import javax.servlet.http.HttpSession;
 9 
10 import org.apache.struts2.interceptor.ServletRequestAware;
11 import org.apache.struts2.interceptor.ServletResponseAware;
12 
13 public class BaseAction implements ServletRequestAware, ServletResponseAware, Serializable {
14     private static final long serialVersionUID = -7110462505161900879L;
15     /**
16      * 为了传值使用
17      */
18     protected HttpServletResponse response;
19     protected HttpServletRequest request;
20     protected HttpSession session;
21     protected ServletContext application;
22 
23     /**
24      * 为了配置跳转页面所用
25      */
26     protected final static String SUCCESS = "success";
27     protected final static String FAIL = "fail";
28     protected final static String LIST = "list";
29     protected final static String ADD = "add";
30     protected final static String EDIT = "edit";
31     protected final static String DETAIL = "detail";
32 
33     /**
34      * 具体传值字段 后端向jsp页面传值所用字段
35      */
36     protected Object result;
37     protected Object msg;
38     protected int code;
39 
40     public Object getResult() {
41         return result;
42     }
43 
44     public Object getMsg() {
45         return msg;
46     }
47 
48     public int getCode() {
49         return code;
50     }
51 
52     @Override
53     public void setServletResponse(HttpServletResponse arg0) {
54         this.response = arg0;
55 
56     }
57 
58     @Override
59     public void setServletRequest(HttpServletRequest arg0) {
60         this.request = arg0;
61         this.session = arg0.getSession();
62         this.application = arg0.getServletContext();
63     }
64 }

3.2 book模块

3.2.1 biz接口--BooKBiz

 1 package com.yuan.book.biz;
 2 
 3 import java.util.List;
 4 
 5 import com.yuan.book.entity.Book;
 6 
 7 public interface BookBiz {
 8 
 9     public int add(Book book);
10 
11     public void edit(Book book);
12 
13     public void del(Book book);
14 
15     public List<Book> list();
16 
17 }

3.2.2 biz接口实现类--BookBizImpl

  1 package com.yuan.book.biz.impl;
  2 
  3 import java.util.List;
  4 
  5 import com.yuan.book.biz.BookBiz;
  6 import com.yuan.book.dao.BookDao;
  7 import com.yuan.book.entity.Book;
  8 
  9 
 10 /**
 11  * pointcut="execution(* *..*Biz.*(..))"
 12  * 为什么切面要切在biz上面而不能切在dao层上？
 13  *   明确切面的作用：
 14  *         切面的目的是为了在目标对象的方法定义事务特性（add/del/edit/list）
 15  *         给上面所列举的方法开启或提交事务等等
 16  *         
 17  *  举例说明切在biz与切在dao层上的区别
 18  *   web层:
 19  *       MoneyAction.transfer(){
 20  *           MoneyBiz.transfer(User u1,User u2);
 21  *       }
 22  *   biz层:
 23  *       MoneyBiz.transfer(User u1,User u2){
 24  *       MoneyDao.edit(u1);
 25  *       MoneyDao.edit(u2);
 26  *       }
 27  *       
 28  *   dao层:
 29  *       MoneyDao.edit(User u)
 30  *   
 31  *   
 32  *   银行转账的例子
 33  *   如果是切在dao层上：
 34  *       SSH解读程序员所写的代码
 35  *   biz层:
 36  *       MoneyBiz.transfer(User u1,User u2){
 37  *       Transation t1= session.beginTransation();
 38  *       MoneyDao.edit(u1);
 39  *       t1.commit();
 40  *       Transation t2= session.beginTransation();
 41  *       MoneyDao.edit(u2);
 42  *       t2.commit();
 43  *       }
 44  *   从上面代码可以看出，一个转账功能处于两个事务当中！
 45  *   
 46  *      如果     MoneyDao.edit(u1);  这里发生了异常
 47  *               MoneyDao.edit(u2);
 48  *   
 49  *   如果切在biz层上：
 50  *       web层:
 51  *       MoneyAction.transfer(){
 52  *       Transation t= session.beginTransation();
 53  *           MoneyDao.edit(u1);  出现异常
 54  *          MoneyDao.edit(u2);
 55  *         t.commit();
 56  *       }
 57  *    
 58  *    总：如果切在dao层上，一个方法可能会出现多个事务提交，
 59  *        在执行到中间位置时出现异常
 60  *        会导致后面的还没有开始运行，
 61  *        而前面的就已经提交了。
 62  *        
 63  *        如果切在biz层上，只需一个事务提交，
 64  *        中间出现异常不会提交事务，
 65  *        执行完后再提交事务，方便于事务回滚
 66  *        
 67  * @author ly
 68  *
 69  */
 70 public class BookBizImpl implements BookBiz {
 71 
 72     private BookDao bookDao;
 73 
 74     public BookDao getBookDao() {
 75         return bookDao;
 76     }
 77 
 78     public void setBookDao(BookDao bookDao) {
 79         this.bookDao = bookDao;
 80     }
 81 
 82     @Override
 83     public int add(Book book) {
 84         return bookDao.add(book);
 85     }
 86 
 87     @Override
 88     public void edit(Book book) {
 89         bookDao.edit(book);
 90     }
 91 
 92     @Override
 93     public void del(Book book) {
 94         bookDao.del(book);
 95     }
 96 
 97     @Override
 98     public List<Book> list() {
 99         return bookDao.list();
100     }
101 
102 }

3.2.3 dao层--BookDao

 1 package com.yuan.book.dao;
 2 
 3 import java.util.List;
 4 
 5 import org.hibernate.HibernateException;
 6 import org.hibernate.Session;
 7 import org.springframework.orm.hibernate5.HibernateCallback;
 8 
 9 import com.yuan.base.dao.BaseDao;
10 import com.yuan.book.entity.Book;
11 
12 /**
13  * 注意： 1、必须继承BaseDao，是为了获取到hibernateTemplate 2、方法命名有讲究（一定要符合声明式事务所定义的规则）
14  * 如果不遵守命名规则，那么数据是不会提交到数据库的 3、hibernateTemplate模板在执行查询的时候比较特殊
15  * 
16  * @author ly
17  * 
18  *
19  */
20 public class BookDao extends BaseDao {
21 
22     public int add(Book book) {
23         return (int) getHibernateTemplate().save(book);
24     }
25 
26     public void edit(Book book) {
27         getHibernateTemplate().update(book);
28     }
29 
30     public void del(Book book) {
31         getHibernateTemplate().delete(book);
32     }
33 
34     public List<Book> list(){
35         return (List<Book>)getHibernateTemplate().execute(new HibernateCallback<List<Book>>() {
36 
37             @Override
38             public List<Book> doInHibernate(Session session) throws HibernateException {
39                 return session.createQuery("from Book").list();
40             }
41             
42         });
43     }
44 
45 }

3.2.4 实体

Book

 1 package com.yuan.book.entity;
 2 
 3 import java.io.Serializable;
 4 import java.util.HashSet;
 5 import java.util.Set;
 6 
 7 /**
 8  * 一对多，一本书对应多种书本类型
 9  * @author ly
10  *
11  */
12 public class Book implements Serializable{
13 //    book_id int primary key auto_increment,
14 //       book_name varchar(50) not null,
15 //       price float not null
16     private Integer bookId;
17     private String bookName;
18     private Float price;
19     
20 
21     public Integer getBookId() {
22         return bookId;
23     }
24 
25     public void setBookId(Integer bookId) {
26         this.bookId = bookId;
27     }
28 
29     public String getBookName() {
30         return bookName;
31     }
32 
33     public void setBookName(String bookName) {
34         this.bookName = bookName;
35     }
36 
37     public Float getPrice() {
38         return price;
39     }
40 
41     public void setPrice(Float price) {
42         this.price = price;
43     }
44 
45 
46     @Override
47     public String toString() {
48         return "Book [bookId=" + bookId + ", bookName=" + bookName + ", price=" + price + "]";
49     }
50 
51     public Book(Integer bookId, String bookName) {
52         super();
53         this.bookId = bookId;
54         this.bookName = bookName;
55     }
56 
57     public Book() {
58         super();
59     }
60     
61     
62 }

book.hbm.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!DOCTYPE hibernate-mapping PUBLIC 
 3     "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
 4     "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
 5 <hibernate-mapping>
 6 
 7 
 8 <class table="t_hibernate_book" name="com.yuan.book.entity.Book">
 9 
10 
11 <id name="bookId" column="book_id" type="java.lang.Integer">
12 
13 <generator class="increment"/>
14 
15 </id>
16 
17 <property name="bookName" column="book_name" type="java.lang.String"> </property>
18 
19 <property name="price" column="price" type="java.lang.Float"> </property>
20 
21 <!-- set标签 table:对应的是中间表，没有实体类的，意味着靠两张主表对应的映射文件联合管理数据 name：当前映射文件对应的实体类对应的属性 cascade:级联新增修改，说白了就是当前实体类对应的表删除能否影响到关联表的数据 inberse:中间表的数据维护的权利交给对方 key标签 column：当前表t_hibernate_book_category的主键book_id在中间表的列段bidmany-to-many:column:代表中间表对应的除去当前表t_hibernate_book的非主键的中间列段cidclass:cid对应的类 <set table="t_hibernate_book_category" name="categories" cascade="save-update" inverse="true">one<key column="bid"></key>many<many-to-many column="cid" class="com.jt4.entity.Category"></many-to-many></set> -->
22 
23 
24 </class>
25 
26 </hibernate-mapping>

3.2.5 web层--BookAction

 1 package com.yuan.book.web;
 2 
 3 import java.util.List;
 4 
 5 import com.opensymphony.xwork2.ModelDriven;
 6 import com.yuan.base.web.BaseAction;
 7 import com.yuan.book.biz.BookBiz;
 8 import com.yuan.book.entity.Book;
 9 
10 public class BookAction extends BaseAction implements ModelDriven<Book> {
11 
12     private Book book = new Book();
13     private BookBiz bookBiz;
14 
15     @Override
16     public Book getModel() {
17         // TODO Auto-generated method stub
18         return book;
19     }
20     
21     public BookBiz getBookBiz() {
22         return bookBiz;
23     }
24 
25     public void setBookBiz(BookBiz bookBiz) {
26         this.bookBiz = bookBiz;
27     }
28 
29     public String add() {
30         System.out.println(book);
31         this.bookBiz.add(book);
32         return null;
33     }
34     
35     public String edit() {
36         System.out.println(book);
37         this.bookBiz.edit(book);
38         return null;
39     }
40     
41     public String del() {
42         System.out.println(book);
43         this.bookBiz.del(book);
44         return null;
45     }
46     
47     public String list() {
48         List<Book> list2 = this.bookBiz.list();
49         for (Book b : list2) {
50             System.out.println(b);
51         }
52         return null;
53     }
54     
55     
56     
57 }

4. 整合案例演示

4.1 查询演示

4.2 新增演示

4.3 修改演示

4.4 删除演示

谢谢观看！！！

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原文地址：https://www.cnblogs.com/ly-0919/p/11366698.html