zoukankan      html  css  js  c++  java
  • 浅谈一下SSI+Oracle框架的整合搭建

    最近换了一家公司,公司几乎所有的项目都采用的是Struts2+Spring+Ibatis+Oracle的架构,上一个东家一般用的就是JSF+Spring,所做的项目没有一个用过ORM的框架,至于Struts2也只是平时自己做做Demo玩玩,毕竟才出校园,不懂得东西还有太多太多,经过这么几天的摸索,对这套环境的搭建还算比较熟悉了,因此写一篇日志全当自我总结,也可以给那些初次接触这些框架的朋友一点小小小小小小的建议,当然文中的不足还望各位大神指出,帮助小弟快速地成长。

    这个Demo的所有jar包我都上传上来了,有兴趣或者有需要的朋友可以直接下载。

    http://pan.baidu.com/share/link?shareid=582164770&uk=772999987

    开发环境是JDK1.6+Tomcat6.0

    好了,不多说了,先上个项目的结构图。

    让我先按照Action-Service-Dao的顺序把所有的层的代码贴出来。

    PS:这个Demo起初我是为了测试spring整合ibatis的事务管理,所以只有增删改的方法,并且测试数据都是写死在代码里的,有兴趣的朋友可以添加更多的方法和完善页面

    首先是Action层:

    package com.ssi.test.action;
    
    import org.apache.struts2.ServletActionContext;
    
    import com.opensymphony.xwork2.ActionSupport;
    import com.ssi.test.exception.TestException;
    import com.ssi.test.svc.TestSvcIfc;
    
    public class TestAction extends ActionSupport {
    
        private TestSvcIfc testSvc;
    
        public void setTestSvc(TestSvcIfc testSvc) {
            this.testSvc = testSvc;
        }
    
        //添加测试数据
        public String addTest() {
            try {
                testSvc.addTest();
            } catch (TestException e) {
                //所有异常集中在Action层处理
                ServletActionContext.getRequest().setAttribute("msg",
                        e.getMessage());
                return ERROR;
            }
            return null;
        }
    
        //删除测试数据
        public String deleteTest() {
            try {
                testSvc.deleteTest();
            } catch (TestException e) {
                //所有异常集中在Action层处理
                ServletActionContext.getRequest().setAttribute("msg",
                        e.getMessage());
                return ERROR;
            }
            return null;
        }
    
        //更新测试数据
        public String updateTest() {
            try {
                testSvc.updateTest();
            } catch (TestException e) {
                //所有异常集中在Action层处理
                ServletActionContext.getRequest().setAttribute("msg",
                        e.getMessage());
                return ERROR;
            }
            return null;
        }
    }
    TestAction.java

    接着是Service层的接口以及实现类:

    package com.ssi.test.svc;
    
    import com.ssi.test.exception.TestException;
    
    public interface TestSvcIfc {
        
        public void addTest() throws TestException;
    
        public void deleteTest() throws TestException;
    
        public void updateTest() throws TestException;
    }
    TestSvcIfc.java
    package com.ssi.test.svc.impl;
    
    import com.ssi.test.bean.TestBean;
    import com.ssi.test.dao.TestDaoIfc;
    import com.ssi.test.exception.TestException;
    import com.ssi.test.svc.TestSvcIfc;
    import com.ssi.test.utils.TestUtil;
    
    public class TestSvcImpl implements TestSvcIfc {
    
        private TestDaoIfc testDao;
    
        public void setTestDao(TestDaoIfc testDao) {
            this.testDao = testDao;
        }
    
        @Override
        public void addTest() throws TestException {
            //这里我通过我的工具类随机生成了一些测试数据
            TestBean test = new TestBean();
            test.setTestData1(TestUtil.buildData());
            test.setTestData2(TestUtil.buildData());
            test.setTestData3(TestUtil.buildData());
            test.setFlag("0");
            testDao.addTest(test);
        }
    
        @Override
        public void deleteTest() throws TestException {
            //数据我是写死了的,我只对id为2的测试数据进行了删除操作
            TestBean test = new TestBean();
            test.setId(2);
            testDao.deleteTest(test);
        }
    
        @Override
        public void updateTest() throws TestException {
            //数据我是写死了的,并用工具类随机生成了新的测试数据,我只对id为2的测试数据进行了更新操作
            TestBean test = new TestBean();
            test.setId(2);
            test.setTestData1(TestUtil.buildData());
            test.setTestData2(TestUtil.buildData());
            test.setTestData3(TestUtil.buildData());
            test.setFlag("1");
        }
    }
    TestSvcImpl.java

    随机生成测试数据的工具类:

    package com.ssi.test.utils;
    
    import java.util.Random;
    
    public class TestUtil {
        public static String buildData() {
            //定义随机生成数据的元素集
            String dataElement = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
            StringBuffer sb = new StringBuffer();
            Random random = new Random();
            //生成随机数据
            for (int i = 0; i < 5; i++) {
                sb.append(dataElement.charAt(random.nextInt(dataElement.length())));
            }
            return sb.toString();
        }
    }
    TestUtil.java

    最后是Dao层接口以及其实现类:

    package com.ssi.test.dao;
    
    import com.ssi.test.bean.TestBean;
    import com.ssi.test.exception.TestException;
    
    public interface TestDaoIfc {
        public void addTest(TestBean test) throws TestException;
    
        public void deleteTest(TestBean test) throws TestException;
    
        public void updateTest(TestBean test) throws TestException;
    }
    TestDaoIfc.java
    package com.ssi.test.dao.impl;
    
    import org.springframework.dao.DataAccessException;
    import org.springframework.orm.ibatis.SqlMapClientTemplate;
    
    import com.ssi.test.bean.TestBean;
    import com.ssi.test.dao.TestDaoIfc;
    import com.ssi.test.exception.TestException;
    
    public class TestDaoImpl implements TestDaoIfc {
    
        private SqlMapClientTemplate sqlMapClientTemplate;
    
        public void setSqlMapClientTemplate(
                SqlMapClientTemplate sqlMapClientTemplate) {
            this.sqlMapClientTemplate = sqlMapClientTemplate;
        }
    
        @Override
        public void addTest(TestBean test) throws TestException {
            try {
                sqlMapClientTemplate.insert("addQuery", test);
            } catch (DataAccessException e) {
                e.printStackTrace();
                throw new TestException("Database error");
            }
        }
    
        @Override
        public void deleteTest(TestBean test) throws TestException {
            try {
                sqlMapClientTemplate.delete("deleteQuery", test);
            } catch (DataAccessException e) {
                e.printStackTrace();
                throw new TestException("Database error");
            }
        }
    
        @Override
        public void updateTest(TestBean test) throws TestException {
            try {
                sqlMapClientTemplate.update("updateQuery", test);
            } catch (DataAccessException e) {
                e.printStackTrace();
                throw new TestException("Database error");
            }
        }
    }
    TestDaoImpl.java

    当然还有用于和数据库表映射的实体Bean:

    package com.ssi.test.bean;
    
    public class TestBean {
        private Integer id;
        private String testData1;
        private String testData2;
        private String testData3;
        private String flag;
    
        public Integer getId() {
            return id;
        }
    
        public void setId(Integer id) {
            this.id = id;
        }
    
        public String getTestData1() {
            return testData1;
        }
    
        public void setTestData1(String testData1) {
            this.testData1 = testData1;
        }
    
        public String getTestData2() {
            return testData2;
        }
    
        public void setTestData2(String testData2) {
            this.testData2 = testData2;
        }
    
        public String getTestData3() {
            return testData3;
        }
    
        public void setTestData3(String testData3) {
            this.testData3 = testData3;
        }
    
        public String getFlag() {
            return flag;
        }
    
        public void setFlag(String flag) {
            this.flag = flag;
        }
    }
    TestBean.java

    晕,好像把顺序搞错了,最先应该出场的应该是数据库,好吧,赶紧补上。

    在这里,我们建立了一个test的SEQUENCE和test的TABLE,具体Query如下:

    CREATE SEQUENCE seq_test
    INCREMENT BY 1
    START WITH 1
    NOMAXvalue
    NOCYCLE
    NOCACHE;
    CREATE TABLE tb_test(
    id int primary key,
    test_data1 varchar(12) not null,
    test_data2 varchar(12) not null,
    test_data3 varchar(12),
    flag varchar(1)
    );

    关于SEQUENCE中的各种参数的说明,请参考下面这位大神的博客。
    http://blog.sina.com.cn/s/blog_a3ffb91101011yjj.html

    OK,到目前为止,我们已经把基本要用到的类(除去一个Exception的类)都贴了出来,现在就是进行配置文件书写的时候了。

    首先咱们来个log4j的配置文件(仅仅为Demo,所以网上copy的,具体的配置大家可以根据自己的口味进行修改):

    log4j.rootLogger=info,Console,R 
    
    log4j.appender.Console=org.apache.log4j.ConsoleAppender
    
    log4j.appender.Console.layout=org.apache.log4j.PatternLayout
    
    #log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p %c - %m%n
    
    log4j.appender.Console.layout.ConversionPattern=%d{yy-MM-dd HH:mm:ss} %5p %c{1}:%L - %m%n
    
    
    
    log4j.appender.R=org.apache.log4j.DailyRollingFileAppender
    
    log4j.appender.R.File=${catalina.home}/logs/tomcat.log 
    
    log4j.appender.R.layout=org.apache.log4j.PatternLayout
    
    log4j.appender.R.layout.ConversionPattern=%d{yyyy.MM.dd HH:mm:ss} %5p %c{1}(%L):? %m%n 
    
    
    
    log4j.logger.org.apache=info,R
    
    log4j.logger.org.apache.catalina.core.ContainerBase.[Catalina].[localhost]=DEBUG, R 
    
    log4j.logger.org.apache.catalina.core=info,R
    
    log4j.logger.org.apache.catalina.session=info,R

    接下来,让我们先配置ibatis的配置文件SqlMapConfig.xml以及映射实体Bean和数据库表的Map文件TestMap.xml:

    <?xml version="1.0" encoding="UTF-8" ?>
    
    <!DOCTYPE sqlMapConfig      
        PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN"      
        "http://ibatis.apache.org/dtd/sql-map-config-2.dtd">
    
    <sqlMapConfig>
        <sqlMap resource="com/ssi/test/bean/TestMap.xml" />
    </sqlMapConfig>
    SqlMapConfig.xml
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE sqlMap     
        PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN"     
        "http://ibatis.apache.org/dtd/sql-map-2.dtd">
    
    <sqlMap>
        <!-- TestBean Alias -->
        <typeAlias alias="test" type="com.ssi.test.bean.TestBean" />
    
        <!-- Query for add -->
        <insert id="addQuery" parameterClass="test">
        INSERT INTO tb_test
        values(seq_test.Nextval,#testData1#,#testData2#,#testData3#,#flag#)
        </insert>
    
        <!-- Query for delete -->
        <delete id="deleteQuery" parameterClass="test">
            DELETE FROM tb_test
            WHERE
            id=#id#
        </delete>
    
        <!-- Query for update -->
        <update id="updateQuery" parameterClass="test">
            UPDATE tb_test SET
            test_data1=#testData1#,test_data2=#testData2#,test_data3=#testData3#,flag=#flag#
            WHERE id=#id#
        </update>
    </sqlMap>
    TestMap.xml

    关于更多关于ibatis的配置和参数使用说明,大家可以去问问“谷”大哥。

    配置完ibatis之后,大家可以配置spring的配置文件了,因为类和ibatis的文件都创建好了,所以这会儿配spring文件时很合适的,配置文件中有很多命名不是很规范的,所以大家请不要盲目效仿,应该遵循一些比较规范的命名规则:

    <?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
                    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
                    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
                    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">
        <!-- DataSource -->
        <bean id="dataSource" destroy-method="close"
            class="org.apache.commons.dbcp.BasicDataSource">
            <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
            <property name="url" value="jdbc:oracle:thin:@127.0.0.1:1521:orcl" />
            <property name="username" value="test" />
            <property name="password" value="test" />
            <property name="maxWait" value="5000" />
            <property name="initialSize" value="2" />
            <property name="maxActive" value="10" />
            <property name="maxIdle" value="3" />
            <property name="minIdle" value="1" />
            <property name="removeAbandoned" value="true" />
            <property name="removeAbandonedTimeout" value="100" />
            <property name="logAbandoned" value="false" />
        </bean>
    
        <!-- DataSource Transaction Manager -->
        <bean id="txManager"
            class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource" />
        </bean>
    
        <!-- DataSource Transaction Manager -->
        <bean id="testTM"
            class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource" />
        </bean>
    
    
        <!-- SqlMapClient -->
        <bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
            <property name="configLocation" value="/WEB-INF/SqlMapConfig.xml" />
            <property name="dataSource" ref="dataSource" />
        </bean>
    
        <!-- SqlMapClientTemplate -->
        <bean id="sqlMapClientTemplate" class="org.springframework.orm.ibatis.SqlMapClientTemplate">
            <property name="sqlMapClient" ref="sqlMapClient" />
        </bean>
    
        <!-- TestDao -->
        <bean id="testDao" class="com.ssi.test.dao.impl.TestDaoImpl">
            <property name="sqlMapClientTemplate" ref="sqlMapClientTemplate" />
        </bean>
    
        <!-- TestSvc -->
        <bean id="testSvc" class="com.ssi.test.svc.impl.TestSvcImpl">
            <property name="testDao" ref="testDao" />
        </bean>
    
        <!-- TestAction -->
        <bean id="testAction" class="com.ssi.test.action.TestAction">
            <property name="testSvc" ref="testSvc" />
        </bean>
    
        <!-- txAdvice -->
        <tx:advice id="testAdvice" transaction-manager="testTM">
            <tx:attributes>
                <tx:method name="add*" propagation="REQUIRED" />
                <tx:method name="del*" propagation="REQUIRED" />
                <tx:method name="update*" propagation="REQUIRED" />
            </tx:attributes>
        </tx:advice>
    
        <!-- aop -->
        <aop:config>
            <aop:pointcut id="allManagerMethod" expression="execution(* com.ssi.test.svc.*.*(..))" />
            <aop:advisor advice-ref="testAdvice" pointcut-ref="allManagerMethod" />
        </aop:config>
    </beans>
    applicationContext.xml

    接着SSI就还差一个S了,那就是struts2的配置文件,由于是整合了spring,所以配置文件中

    <constant name="struts.objectFactory" value="org.apache.struts2.spring.StrutsSpringObjectFactory" />

    这句话尤为关键,在action中的class那里直接输入spring中配置好的Action的id就好了,至于另外一句<constan ....>大家可以不管,这个只是为了取消Struts2标签自带的一些样式罢了:

    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE struts PUBLIC
         "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
         "http://struts.apache.org/dtds/struts-2.0.dtd">
    
    <struts>
        <constant name="struts.objectFactory" value="org.apache.struts2.spring.StrutsSpringObjectFactory" />
        <constant name="struts.ui.theme" value="simple" />
    
        <package name="default" extends="struts-default">
            <action name="testAction" class="testAction">
                <result name="error">/error.jsp</result>
            </action>
        </package>
    </struts>
    struts.xml

    接着,随便写两个页面,一个操作页面一个error页面,由于我的测试数据是在代码里生成的,所以页面上就三个按钮,直接触发后台的action:

    index.jsp

    <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
    <%
        String path = request.getContextPath();
        String basePath = request.getScheme() + "://"
                + request.getServerName() + ":" + request.getServerPort()
                + path + "/";
    %>
    <%@ taglib prefix="s" uri="/struts-tags"%>
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
    <html>
    <head>
    <base href="<%=basePath%>">
    <title>My JSP 'index.jsp' starting page</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    
    <!--
            <link rel="stylesheet" type="text/css" href="styles/styles.css">
            <script type="text/javascript" src="scripts/xx.js"></script>
            -->
    </head>
    <body>
        <h3>Add Test Data</h3>
        <s:form action="testAction!addTest" method="post">
            <s:submit value="Add Test" />
        </s:form>
        <hr />
        <h3>Delete Test Data</h3>
        <s:form action="testAction!deleteTest" method="post">
            <s:submit value="Delete Test" />
        </s:form>
        <hr />
        <h3>Update Test Data</h3>
        <s:form action="testAction!updateTest" method="post">
            <s:submit value="Update Test" />
        </s:form>
        <hr />
    </body>
    </html>

    error.jsp

    <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
    <%
        String path = request.getContextPath();
        String basePath = request.getScheme() + "://"
                + request.getServerName() + ":" + request.getServerPort()
                + path + "/";
    %>
    <%@ taglib prefix="s" uri="/struts-tags"%>
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
    <html>
    <head>
    <base href="<%=basePath%>">
    <title>My JSP 'index.jsp' starting page</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    
    <!--
            <link rel="stylesheet" type="text/css" href="styles/styles.css">
            <script type="text/javascript" src="scripts/xx.js"></script>
            -->
    </head>
    <body>
        <h3>
            <s:property value="#request.msg" />
        </h3>
    </body>
    </html>

    好了,所有的配置均已完成,让我启动万恶的Tomcat的吧,启动后的页面如下,哇靠,太丑了,不过将就了呗。

    接下来,让我们点击Add Test,如果你出现了空白页面,如下,恭喜你,你的数据插入成功了(因为插入成功返回了一个null,没有相对于的页面,当然是空白的,哈哈):

    为了添加更多的测试数据,让我们把url中action后面从冒号开始的字符串删掉,然后不停地点击再回车(重复提交这个action),这样就会向数据库插入若干的测试数据,在这里,就引申出如何防止重复提交的问题,关于这一点,还请大家继续咨询“谷”大哥。

    打开数据库,看看刚才的杰作吧:

    至此,一个SSI的Demo就算是搭建成功了,关于删除和更新,大家可以再去试试,因为是写死了,所以只会对id=2的这一条记录进行删除或更新的操作。

    那么是否就此结束了呢,当然没有,起初做这个demo的时候是为了测试一下事务管理的功能,所以,让我们修改一下Dao层的代码,就拿deleteTest方法做测试吧,我直接把原有的try{}catch{}代码块删除掉,在进行删除作业后直接抛出一个自定义的异常,如图所示:

        @Override
        public void deleteTest(TestBean test) throws TestException {
            sqlMapClientTemplate.delete("deleteQuery", test);
            throw new TestException("Database error");
        }

    这样子的话当我点击页面的Delete Test的时候,页面应该跳转至error.jsp,数据库被删除掉的数据应该回滚,也就是id为2的值应该还存在,so,如下:

    好的,事实证明一切都成功了,但在成功之前,我却先见过他妈咪,最开始页面也会跳转到error.jsp,但是数据库中的数据却被删除了,为什么呢,这个时候前文一直提到却没现身的Exception类该登场了。

    package com.ssi.test.exception;
    
    public class TestException extends RuntimeException {
        public TestException() {
    
        }
    
        public TestException(String msg) {
            super(msg);
        }
    }

    在这里,大家注意,我的异常类是继承了RuntimeException而不是Excepetion,各位基础扎实和有经验的朋友或许明白我之前犯了什么错了,因为在成功之前,我的这个Exception继承的是Excpeition而非现在的RuntimeException,所以出现了页面跳转正确,事务管理失败的情况,至于为什么,请参考下面这位大神。http://java.chinaitlab.com/configure/899978.html

    好了好了,不说了,都下班了,不足的还望大家指出。

    #####################################################################

    忘了还有个最关键的东西,当然,大家熟悉web开发的话应该都知道,那就是web.xml的配置,记得把Struts2的核心filter和spring容器的listener加上:

    <?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" 
             xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 
             xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
      <display-name>ssiTest</display-name> 
        
        <filter>
            <filter-name>struts2</filter-name>
            <filter-class>
                org.apache.struts2.dispatcher.FilterDispatcher            
            </filter-class>
        </filter>
          
        <filter-mapping>     
            <filter-name>struts2</filter-name> 
            <url-pattern>/*</url-pattern> 
            <dispatcher>REQUEST</dispatcher> 
            <dispatcher>FORWARD</dispatcher> 
        </filter-mapping> 
        
        <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
        </listener>
        
        <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/applicationContext.xml</param-value>
        </context-param>
                
        <welcome-file-list>
            <welcome-file>index.jsp</welcome-file>
        </welcome-file-list>
    </web-app>
  • 相关阅读:
    Hibernate 基于外键的双向一对一关联映射
    Hibernate 基于外键的单项一对一关联映射
    Hibernate inverse
    Hibernate cascade
    Hibernate 双向一对多的关联映射
    Hibernate 单项一对多的关联映射
    (转)关闭iptables和SELinux
    linux下大于2T的硬盘格式化方法
    lsusb命令
    CentOS最小化安装后启用无线连接网络
  • 原文地址:https://www.cnblogs.com/tf-swufe/p/3186803.html
Copyright © 2011-2022 走看看