IDEA环境下SSM整合------环境配置

声明：本文纯为个人笔记整理，如有不妥之处还望及时指出，欢迎转载！ 

只为解决操作问题，可以从第二幅图往后看！

一、做不出详细的概念叙述和文本设计，本文主要以实战步骤为主，少量解释为辅助，下面请大家牢记两幅图：

截图来自张开涛博客

      典型的jsp(java server page)是一种服务器执行的组件，运行在标准HTML页面的java技术，最终还是被编译成服务器可以识别的servlet代码，生成.class文件，相比Servlet开发简洁、方便，缺点是视图显示、业务控制比较复杂，而且把对后端操作放在jsp页面很不安全；

      故产生了Jsp+JavaBean开发，使用<jsp:usebean>标签，自动将请求封装为javabean组件，可以认为是为了增强jsp开发；这也是单一的开发思路，即下图所示，这种模型同样是没有本子上解决问题，大量的业务处理依然在jsp页面中，而bean负责的只有参数的请求处理；所以出现了我们的MVC模型；

jsp+bean模型

MVC模型

在JvavEE的开发中，可以认为下图就是我们的web mvc模型

控制器用servlet、模型用JavaBean、视图采用Jsp

二、下面开始步入正题；

进行springmvc开发，写业务逻辑之前，首先要做到：

1.开发环境（jdk+IDE+maven+mysql）

2.配置环境（web.xml、pom.xml、application.xml、springmvc.xml、mybatis.xml）

3.定义domian、生成dao、mapper

按照上述步骤进行开发，便于在后期调错，另外 可以个那好的梳理业务逻辑，本文只介绍，文件配置到连接上数据库。

三、SpringMvc开发用到的通用配置文件

1.pom.xml这里粘贴一个详细的pom文件，包含各种依赖和maven常用的几个插件

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <groupId>Traing</groupId>
   <artifactId>springmvc</artifactId>
   <packaging>war</packaging>
   <version>0.0.1-SNAPSHOT</version>
   <name>springmvc</name>
   <url>http://maven.apache.org</url>
   <properties>
      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
      <webVersion>2.3</webVersion>
   </properties>
   <dependencies>
      <dependency>
         <groupId>com.fasterxml.jackson.core</groupId>
         <artifactId>jackson-core</artifactId>
         <version>2.4.3</version>
      </dependency>
      <dependency>
         <groupId>com.fasterxml.jackson.core</groupId>
         <artifactId>jackson-databind</artifactId>
         <version>2.4.3</version>
      </dependency>
      <!--以下四个是SpringMvc中数据校验jar包jsr 303的相关依赖 -->
      <dependency>
         <groupId>org.hibernate</groupId>
         <artifactId>hibernate-validator</artifactId>
         <version>5.1.3.Final</version>
      </dependency>
      <dependency>
         <groupId>javax.validation</groupId>
         <artifactId>validation-api</artifactId>
         <version>1.1.0.Final</version>
      </dependency>
      <dependency>
         <groupId>org.jboss.logging</groupId>
         <artifactId>jboss-logging</artifactId>
         <version>3.1.1.GA</version>
      </dependency>
      <dependency>
         <groupId>org.glassfish</groupId>
         <artifactId>bean-validator</artifactId>
         <version>3.0-JBoss-4.0.2</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>org.glassfish</groupId>
         <artifactId>javax.enterprise.deploy</artifactId>
         <version>3.0.1</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>org.glassfish</groupId>
         <artifactId>javax.jms</artifactId>
         <version>3.0.1</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>org.glassfish</groupId>
         <artifactId>javax.management.j2ee</artifactId>
         <version>3.0.1</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>org.eclipse.persistence</groupId>
         <artifactId>javax.persistence</artifactId>
         <version>2.0.0</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>org.glassfish</groupId>
         <artifactId>javax.resource</artifactId>
         <version>3.0.1</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>org.glassfish</groupId>
         <artifactId>javax.security.auth.message</artifactId>
         <version>3.0.1</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>org.glassfish</groupId>
         <artifactId>javax.security.jacc</artifactId>
         <version>3.0.1</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>org.glassfish</groupId>
         <artifactId>javax.servlet</artifactId>
         <version>3.0.1</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>org.glassfish</groupId>
         <artifactId>javax.servlet.jsp</artifactId>
         <version>3.0.1</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>org.glassfish</groupId>
         <artifactId>javax.servlet.jsp.jstl</artifactId>
         <version>3.0.1</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>javax.xml.bind</groupId>
         <artifactId>jaxb-api-osgi</artifactId>
         <version>2.2.1</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>javax.ws.rs</groupId>
         <artifactId>jsr311-api</artifactId>
         <version>1.1.1</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>org.glassfish.web</groupId>
         <artifactId>jstl-impl</artifactId>
         <version>1.2</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>javax.mail</groupId>
         <artifactId>mail</artifactId>
         <version>1.4.3</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>javax.xml</groupId>
         <artifactId>webservices-api-osgi</artifactId>
         <version>2.0.1</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>org.jboss.weld</groupId>
         <artifactId>weld-osgi-bundle</artifactId>
         <version>1.0.1-SP3</version>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>org.glassfish.web</groupId>
         <artifactId>javax.servlet.jsp.jstl</artifactId>
         <version>1.2.1</version>
      </dependency>


      <!-- 项目其他依赖 -->

      <!-- mysql 依赖 https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
      <dependency>
         <groupId>mysql</groupId>
         <artifactId>mysql-connector-java</artifactId>
         <version>5.1.23</version>
      </dependency>
      <!-- junit 依赖 -->
      <dependency>
         <groupId>junit</groupId>
         <artifactId>junit</artifactId>
         <version>4.12</version>
         <scope>test</scope>
      </dependency>

      <!-- Mybatis -->
      <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
      <dependency>
         <groupId>org.mybatis</groupId>
         <artifactId>mybatis</artifactId>
         <version>3.2.1</version>
      </dependency>
      <!-- spring 依赖 -->
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-context</artifactId>
         <version>3.2.18.RELEASE</version>
      </dependency>
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-context-support</artifactId>
         <version>3.2.18.RELEASE</version>
      </dependency>
      <!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-test</artifactId>
         <version>3.2.18.RELEASE</version>
         <scope>test</scope>
      </dependency>
      <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-core</artifactId>
         <version>3.2.18.RELEASE</version>
      </dependency>
      <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-web</artifactId>
         <version>3.2.18.RELEASE</version>
      </dependency>
      <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-aop</artifactId>
         <version>3.2.18.RELEASE</version>
      </dependency>

      <!-- https://mvnrepository.com/artifact/aspectj/aspectjweaver -->
      <dependency>
         <groupId>aspectj</groupId>
         <artifactId>aspectjweaver</artifactId>
         <version>1.5.4</version>
      </dependency>


      <!-- https://mvnrepository.com/artifact/org.springframework/spring-tx -->
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-tx</artifactId>
         <version>3.2.18.RELEASE</version>
      </dependency>
      <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-jdbc</artifactId>
         <version>3.2.18.RELEASE</version>
      </dependency>
      <!-- https://mvnrepository.com/artifact/org.springframework/spring-orm -->
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-orm</artifactId>
         <version>3.2.18.RELEASE</version>
      </dependency>
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-webmvc</artifactId>
         <version>3.2.18.RELEASE</version>
      </dependency>
      <!-- spring mybatis 整合依赖 -->
      <dependency>
         <groupId>org.mybatis</groupId>
         <artifactId>mybatis-spring</artifactId>
         <version>1.3.1</version>
      </dependency>
      <!--生成代码插件 -->
      <dependency>
         <groupId>org.mybatis.generator</groupId>
         <artifactId>mybatis-generator-core</artifactId>
         <version>1.3.3</version>
         <type>jar</type>
      </dependency>
      <!-- 连接池 -->
      <!-- https://mvnrepository.com/artifact/commons-dbcp/commons-dbcp -->

      <dependency>
         <groupId>commons-dbcp</groupId>
         <artifactId>commons-dbcp</artifactId>
         <version>1.4</version>
      </dependency>
      <!-- https://mvnrepository.com/artifact/commons-pool/commons-pool -->
      <dependency>
         <groupId>commons-pool</groupId>
         <artifactId>commons-pool</artifactId>
         <version>1.6</version>
      </dependency>
      <!-- https://mvnrepository.com/artifact/org.apache.poi/poi -->
      <dependency>
         <groupId>org.apache.poi</groupId>
         <artifactId>poi</artifactId>
         <version>3.17</version>
      </dependency>

      <!-- 文件上传 -->
      <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
      <dependency>
         <groupId>commons-fileupload</groupId>
         <artifactId>commons-fileupload</artifactId>
         <version>1.3</version>
      </dependency>
      <!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
      <dependency>
         <groupId>commons-io</groupId>
         <artifactId>commons-io</artifactId>
         <version>2.6</version>
      </dependency>
      <!-- 导入c3p0依赖 -->
      <dependency>
         <groupId>com.mchange</groupId>
         <artifactId>mchange-commons-java</artifactId>
         <version>0.2.3.1</version>
      </dependency>
      <dependency>
         <groupId>c3p0</groupId>
         <artifactId>c3p0</artifactId>
         <version>0.9.1.2</version>
      </dependency>

      <!-- log4j -->
      <dependency>
         <groupId>log4j</groupId>
         <artifactId>log4j</artifactId>
         <version>1.2.16</version>
      </dependency>

   </dependencies>
   <build>
      

//打成jar时会自动打包依赖
<plugins>
<plugin>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-resources-plugin</artifactId>
   <configuration>
      <encoding>UTF-8</encoding>
   </configuration>
</plugin>

<plugin>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-compiler-plugin</artifactId>
   <configuration>
      <source>1.7</source>
      <target>1.7</target>
      <encoding>UTF-8</encoding>
   </configuration>
</plugin>
<plugin>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-shade-plugin</artifactId>
   <version>1.4</version>
   <configuration>
      <createDependencyReducedPom>true</createDependencyReducedPom>
   </configuration>
   <executions>
      <execution>
         <phase>package</phase>
         <goals>
            <goal>shade</goal>
         </goals>
         <configuration>
            <transformers>
               <transformer
                     implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                  <mainClass>com.cmos.task.TaskManager</mainClass>
               </transformer>
            </transformers>
         </configuration>
      </execution>
   </executions>
</plugin>
</plugins>

   </build>
</project>

2.web.xml  需要注意其中两个配置文件 一个是application.xml ：主要配置dataSource、dao、service等跟持久化相近的非webBean

一个是springmvc.xml：配置controller、handlerResolver视图解析器等web层组件

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>springmvc</display-name>
  <welcome-file-list>
    <welcome-file>/views/login.jsp</welcome-file>
  </welcome-file-list>
   <!-- 处理字符集编码 -->
   <filter>
    <filter-name>CharacterEncoding</filter-name>
       <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
       <init-param>
          <param-name>encoding</param-name>
          <param-value>UTF-8</param-value>
       </init-param>
   <init-param>
      <param-name>forceEncoding</param-name>
      <param-value>true</param-value>
   </init-param>
     </filter>
   <filter-mapping>
   <filter-name>CharacterEncoding</filter-name>
   <url-pattern>/*</url-pattern>
   </filter-mapping>
   <!-- 配置springmvc核心过滤器 -->
   <servlet>
   <servlet-name>dispatcher</servlet-name>
   <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
   <init-param>
   <param-name>contextConfigLocation</param-name>
   <param-value>classpath:/springmvc.xml</param-value>
   </init-param>
   <load-on-startup>1</load-on-startup>   
   </servlet>
   <servlet-mapping>
   <servlet-name>dispatcher</servlet-name>
   <url-pattern>/</url-pattern>
   </servlet-mapping>
   <!-- 配置spring的web工厂 -->
   <listener>
   <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
   </listener>
   <context-param>
   <param-name>contextConfigLocation</param-name>
   <param-value>classpath:/applicationContext.xml</param-value>
   </context-param>
   <!-- RESTful风格的配置：把POST请求转为PUT、DELETE请求-->
   <filter>
   <filter-name>HiddenHttpMethodFilter</filter-name>
   <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
   </filter>
   <filter-mapping>
   <filter-name>HiddenHttpMethodFilter</filter-name>
   <url-pattern>/*</url-pattern>
   </filter-mapping>
   
</web-app>

3.application.xml由于我主要用的注解驱动开发，所以这个配置文件没有相关的dao、servic的bean配置、我将mybatis的配置单独写在Mybatis.xml文件里，但是不要忘记引入到这里。如果只有数据库配置的话，也可以直接写进来（不建议）

4.Mybatis.xml  注意db.properties文件中的内容username、password注意不要配置的太通用 有可能会和本机的配置冲突

db.properties文件中的内容

driverClassName=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/studentmanager?useUnicode=true&characterEncoding=UTF-8
jdbcUserName=root
jdbcPassword=root

Mybatis.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
      http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">

    <context:property-placeholder location="classpath:db.properties"/>
    <!-- 配置数据源-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${driverClassName}">
        </property>
        <property name="url" value="${url}">
        </property>
        <property name="username" value="${jdbcUserName}">
        </property>
        <property name="password" value="${jdbcPassword}">
        </property>
    </bean>
    <!--配置sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 加载mybatis的全局配置文件
        <property name="configLocation" value="classpath:mybatis/sqlMapConfig.xml"/>
        -->
        <!-- 数据库连接池 -->
        <property name="dataSource" ref="dataSource"/>
        <property name="mapperLocations" value="classpath:/Mapper/*Mapper.xml">
        </property>
        <property name="typeAliasesPackage" value="classpath:com.cmos.domain">
        </property>
    </bean>

    <!-- mapper扫描器 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 扫描包路径，如果需要扫描多个包，中间使用半角逗号隔开  -->
        <property name="basePackage" value="com.cmos.dao"/>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>
    <!-- 事务管理 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource">
        </property>
    </bean>
    <!-- 使用annotation注解方式配置事务 -->
    <tx:annotation-driven transaction-manager="transactionManager"/>
</beans>

5.SpringMVC.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
                           http://www.springframework.org/schema/context
                           http://www.springframework.org/schema/context/spring-context-3.2.xsd
                           http://www.springframework.org/schema/mvc
                           http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
    <!-- 包含：webBean ViewResolver、handlerAdapter controller handlerMapping-->
    <!-- 配置自定义扫描的包 -->
    <context:component-scan base-package="com.cmos.controller,com.cmos.service,com.cmos.dao"/>
    <!-- 配置视图解析器：如何把handler方法返回值解析为实际的物理视图 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/views/">
        </property>
        <property name="suffix" value=".jsp">
        </property>
    </bean>
    <!-- default-servlet-handler 会在SpringMvc 上下文中定义一个DefaultServletHttpRequestHandler,
        它会对进入DispatcherServlet的请求进行筛查，如果发现没有经过映射的请求，就将该请求交由web应用服务器
         默认的Servlet处理，如果不是静态资源则用DispathcerServlet进行处理 -->
    <mvc:default-servlet-handler/>
    <mvc:annotation-driven>
    </mvc:annotation-driven>

    <!--拦截器-->
    <mvc:interceptors>
        <mvc:interceptor>
            <mvc:mapping path="/district"/>
            <mvc:mapping path="/organization"/>
            <mvc:mapping path="/unit"/>
            <mvc:mapping path="/student"/>
            <!--com.coms...是我项目的包的名称不要误解 -->
            <bean class="com.cmos.handlers.MyInterceptor"></bean>
        </mvc:interceptor>
    </mvc:interceptors>


    <!-- 配置SimpleMappingExceptionResolver -->
    <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
        <property name="exceptionMappings">
            <props>
                <prop key="java.lang.ArrayIndexOutOfBoundsException">error</prop>
            </props>
        </property>
    </bean>


</beans>

　6.dao和mapper.xml  我这里只粘了一个dao和mapper的样例

　　特别注意：

　　　　1.dao参数类型和Mapper的参数类型严格对称

　　　　2.mapper中的resultMap配置，前面是数据库字段名、后面是对应对象名，要严格一致

　　　　3.不要在Mybtais.xml中引入dao和mapper的位置

package com.cmos.dao;
import com.cmos.domain.District;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Repository;

import java.util.List;

@Repository
public interface DistrictDao {


    int deleteByPrimaryKey(Integer disId);

    int insert(District record);

    int updateByExample(@Param("example") District example);

    List<District> selectAll();


}




Mapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.cmos.dao.DistrictDao">
  <resultMap id="BaseResultMap" type="com.cmos.domain.District">
    <id column="dis_id" jdbcType="INTEGER" property="disId" />
    <result column="dis_name" jdbcType="VARCHAR" property="disName" />
  </resultMap>

  <select id="selectAll"  resultMap="BaseResultMap">
    select dis_id,dis_name from district
  </select>

  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
    delete from district
    where dis_id = #{disId,jdbcType=INTEGER}
  </delete>

  <insert id="insert" parameterType="com.cmos.domain.District">
    insert into district (dis_id, dis_name)
    values (#{disId,jdbcType=INTEGER}, #{disName,jdbcType=VARCHAR})
  </insert>

  <update id="updateByExample" parameterType="com.cmos.domain.District">
    update district
    set dis_name = #{example.disName,jdbcType=VARCHAR}
    where dis_id = #{example.disId,jdbcType=INTEGER}
  </update>
</mapper>

　　

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