SSM整合开发

太过爱你忘了你带给我的痛 2021-09-17 07:24 484阅读 0赞

# 导入开发包 #

*  asm-3.2.0.RELEASE.jar
 *  asm-3.3.1.jar
 *  c3p0-0.9.jar
 *  cglib-2.2.2.jar
 *  com.springsource.net.sf.cglib-2.2.0.jar
 *  com.springsource.org.aopalliance-1.0.0.jar
 *  com.springsource.org.apache.commons.logging-1.1.1.jar
 *  com.springsource.org.aspectj.weaver-1.6.8.RELEASE.jar
 *  jackson-core-asl-1.7.2.jar
 *  jackson-mapper-asl-1.7.2.jar
 *  javassist-3.17.1-GA.jar
 *  javax.servlet.jsp.jstl.jar
 *  jsf-api.jar
 *  jsf-impl.jar
 *  jstl-impl.jar
 *  junit.jar
 *  log4j-1.2.17.jar
 *  mybatis-3.2.2.jar
 *  mybatis-spring-1.2.0.jar
 *  mysql-connector-java-5.1.26-bin.jar
 *  org.hamcrest.core\_1.1.0.v20090501071000.jar
 *  org.springframework.transaction-3.2.2.RELEASE.jar
 *  slf4j-api-1.7.5.jar
 *  slf4j-log4j12-1.7.5.jar
 *  spring-aop-3.2.0.RELEASE.jar
 *  spring-beans-3.2.0.RELEASE.jar
 *  spring-context-3.2.0.RELEASE.jar
 *  spring-core-3.2.0.RELEASE.jar
 *  spring-expression-3.2.0.RELEASE.jar
 *  spring-jdbc-3.2.0.RELEASE.jar
 *  spring-orm-3.2.0.RELEASE.jar
 *  spring-test-3.2.0.RELEASE.jar
 *  spring-web-3.2.0.RELEASE.jar
 *  spring-webmvc-3.2.0.RELEASE.jar

# 整合Spring与Mybatis #

## 相关的配置文件 ##

log4j.properties

# Rules reminder:
    # DEBUG < INFO < WARN < ERROR < FATAL
    
    # Global logging configuration
    log4j.rootLogger=debug,stdout
    
    # My logging configuration...
    log4j.logger.cn.jbit.mybatisdemo=DEBUG
    
    
    ## Console output...
    log4j.appender.stdout=org.apache.log4j.ConsoleAppender
    log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
    log4j.appender.stdout.layout.ConversionPattern=%5p %d %C: %m%n
    
    log4j.logger.org.apache.ibatis=DEBUG
    ## log4j.logger.org.apache.jdbc.SimpleDataSource=DEBUG
    log4j.logger.org.apache.ibatis.jdbc.ScriptRunner=DEBUG
    ## log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapclientDelegate=DEBUG
    log4j.logger.java.sql.Connection=DEBUG
    log4j.logger.java.sql.Statement=DEBUG
    log4j.logger.java.sql.PreparedStatement=DEBUG

myBatis-config.xml文件

通过package, 可以直接指定package的名字， mybatis会自动扫描你指定包下面的javabean,并且默认设置一个别名，**默认的名字为非限定类名来作为它的别名。**

<?xml version="1.0" encoding="UTF-8" ?> 
    <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
    <configuration>
    
    <typeAliases>
    
     
    
     <package name="zhongfucheng.entity"/>
     </typeAliases>
    
    
    </configuration>

applicationContext.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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" 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 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd">
    
    
        
        <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
            <property name="driverClass" value="com.mysql.jdbc.Driver" />
            <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/scm?useUnicode=true&characterEncoding=UTF-8" />
            <property name="user" value="root" />
            <property name="password" value="root" />
        </bean>
        
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource" ref="dataSource" />
            <property name="configLocation" value="classpath:myBatis-config.xml" />
            
        
    
    
        </bean>
    
        
        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource" />
        </bean>
        
        <tx:advice id="advice" transaction-manager="transactionManager">
            <tx:attributes>
                
                <tx:method name="insert*" propagation="REQUIRED" rollback-for="Exception" />
                <tx:method name="update*" propagation="REQUIRED" rollback-for="Exception" />
                <tx:method name="delete*" propagation="REQUIRED" rollback-for="Exception" />
                <tx:method name="*" propagation="SUPPORTS" />
            </tx:attributes>
        </tx:advice>
        
        <aop:config>
            <aop:advisor advice-ref="advice" pointcut="execution(* cn.itcast.scm.service.impl.*.*(..))" />
        </aop:config>
        
        <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
            <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory" />
        </bean>
    
        
    
    
        
        <context:component-scan base-package="cn.itcast">
            <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
        </context:component-scan>
    
        
    
    
    
    
    
    </beans>

## 编写实体及sql映射文件 ##

SQL脚本

drop database if exists mybatis;
    create database mybatis CHARACTER SET UTF8;
    use mybatis;
    
    create table dept( dept_id int primary key auto_increment, dept_name varchar(50), dept_address varchar(50) );
    
    
    insert into dept(dept_name,dept_address) values('研发部一部','广州');
    insert into dept(dept_name,dept_address) values('研发部二部','广州');
    insert into dept(dept_name,dept_address) values('研发部三部','深圳');
    select * from dept;

实体：

package zhongfucheng.entity;
    
    import java.io.Serializable;
    
    public class Dept implements Serializable { 
        private Integer deptId;
        private String deptName;
        private String deptAddress;
        public Integer getDeptId() {
            return deptId;
        }
        public void setDeptId(Integer deptId) {
            this.deptId = deptId;
        }
        public String getDeptName() {
            return deptName;
        }
        public void setDeptName(String deptName) {
            this.deptName = deptName;
        }
        public String getDeptAddress() {
            return deptAddress;
        }
        public void setDeptAddress(String deptAddress) {
            this.deptAddress = deptAddress;
        }
        @Override
        public String toString() {
            return "Dept [deptId=" + deptId + ", deptName=" + deptName
                    + ", deptAddress=" + deptAddress + "]";
        }
    
    }

映射文件

<?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="zhongfucheng.entity.DeptMapper">
        <resultMap type="Dept" id="deptResultMap">
            <id property="deptId" column="dept_id" />
            <result property="deptName" column="dept_name" />
            <result property="deptAddress" column="dept_address" />
        </resultMap>
        
        <select id="selectDept" parameterType="Integer" resultMap="deptResultMap">
            
            select * from dept where dept_id=#{deptID}
        </select>
    
        <insert id="insertDept" parameterType="Dept">
            insert into dept(dept_name,dept_address) values(#{deptName},#{deptAddress});
        </insert>
    
    </mapper>

mybatis配置文件加载映射文件

<?xml version="1.0" encoding="UTF-8" ?> 
    <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
    <configuration>
    
    <typeAliases>
    
     
    
     
     <package name="zhongfucheng.entity"/>
     </typeAliases>
    
        <mappers>
            <mapper resource="zhongfucheng/dao/DeptMapper.xml" />
        </mappers>
    
    </configuration>

## 编写Dao以及实现 ##

接口

package zhongfucheng.dao;
    
    import zhongfucheng.entity.Dept;
    
    /** * Created by ozc on 2017/8/8. */
    
    public interface DeptDao { 
        Dept selectDept(Integer deptId);
        int insertDept(Dept dept);
    }

实现：

package zhongfucheng.dao.impl; import org.mybatis.spring.SqlSessionTemplate; import org.springframework.stereotype.Repository; import zhongfucheng.entity.Dept; import javax.annotation.Resource; /** * Created by ozc on 2017/8/8. */ @Repository("deptDao") public class DeptDaoImpl implements zhongfucheng.dao.DeptDao { @Resource private SqlSessionTemplate sqlSessionTemplate; /** * 根据部门编号查询部门信息 * @param deptId 部门编号 * @return 部门信息 */ @Override public Dept selectDept(Integer deptId){ Dept dept= sqlSessionTemplate.selectOne("zhongfucheng.entity.DeptMapper.selectDept", deptId); return dept; } /** * 添加部门信息 * @param dept 部门信息 * @return 添加成功的记录数 */ @Override public int insertDept(Dept dept){ System.out.println("------dao.dept:"+dept); return sqlSessionTemplate.insert("zhongfucheng.entity.DeptMapper.insertDept", dept); } }

## 测试spring与mybatis整合 ##

import org.junit.AfterClass; import org.junit.BeforeClass; import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import zhongfucheng.dao.impl.DeptDaoImpl; import zhongfucheng.entity.Dept; /** * Created by ozc on 2017/8/8. */ public class TestDeptDao { //@Resource //这里没法使用，后继版本有其它方式可以注入 static private DeptDaoImpl deptDao; @BeforeClass public static void setUpBeforeClass() throws Exception { ApplicationContext context =new ClassPathXmlApplicationContext("applicationContext.xml"); deptDao=(DeptDaoImpl) context.getBean("deptDao"); } @AfterClass public static void tearDownAfterClass() throws Exception { } @Test public void testSelectDept() { System.out.println(deptDao.selectDept(1)); } @Test public void testInsertDept() { Dept dept=new Dept(); //dept.setDeptId(117); dept.setDeptName("name117"); dept.setDeptAddress("address117"); System.out.println("受影响行数："+deptDao.insertDept(dept)); } }

# 整合SpringMVC #

## 配置文件 ##

**spring-mvc.xml**

web.xml

<?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">
    
    
        
        <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>
    
    
        
        <servlet>
            <servlet-name>mvc</servlet-name>
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
            <init-param>
                <param-name>contextConfigLocation</param-name>
                <param-value>classpath:spring-mvc.xml</param-value>
            </init-param>
            <load-on-startup>1</load-on-startup>
        </servlet>
        <servlet-mapping>
            <servlet-name>mvc</servlet-name>
            <url-pattern>*.action</url-pattern>
        </servlet-mapping>
    
        
        <filter>
            <filter-name>encodingFilter</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>
        </filter>
        <filter-mapping>
            <filter-name>encodingFilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
    </web-app>

## 编写Action ##

package zhongfucheng.action;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import zhongfucheng.dao.impl.DeptDaoImpl;
    import zhongfucheng.entity.Dept;
    
    import javax.annotation.Resource;
    
    /** * Created by ozc on 2017/8/8. */
    @Controller
    @RequestMapping(value="/dept")
    public class DeptAction { 
        @Resource
        private DeptDaoImpl deptDao;
    
        @RequestMapping(value="/insert")
        public String insert(Dept dept){
    
            System.out.println("---action.dept:"+dept);
            deptDao.insertDept(dept);
            return "forward:/jsp/main.jsp";
        }
    }

## 测试SSI整合 ##

index.jsp页面

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
    <html>
    <head>
    </head>
    <body>
        <form action="dept/insert.action" method="post">
            名称：<input type="text" name="deptName"><br> 
            地址：<input type="text" name="deptAddress"><br>
            <input type="submit" value="ok">
        </form>
    </body>
    </html>

main.jsp页面：

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
    <html>
    <head>
    </head>
    <body>
     this is main jsp
    </body>
    </html>

![这里写图片描述][SouthEast]

--------------------

# 优化 #

如果想要Spring与Mybatis更加完美地结合，**其实我们的Dao并不需要写实现，直接写接口和映射文件就行了，这样一来，我们就可以舍弃DaoImpl了**。

在Spring配置文件中加入以下的代码：

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            <property name="sqlSessionFactory" ref="sqlSessionFactory" />
    
            
            <property name="basePackage" value="zhongfucheng.dao" />
        </bean>

我们的映射文件中把命名空间写成是Dao的全路径

//Dao的全路径，那么Spring就会自动帮我们创建对象，注入进去 <mapper namespace="zhongfucheng.dao.DeptDao"> <resultMap type="Dept" id="deptResultMap"> <id property="deptId" column="dept_id" /> <result property="deptName" column="dept_name" /> <result property="deptAddress" column="dept_address" /> </resultMap>  <select id="selectDept" parameterType="Integer" resultMap="deptResultMap">  select * from dept where dept_id=#{deptID} </select> <insert id="insertDept" parameterType="Dept"> insert into dept(dept_name,dept_address) values(#{deptName},#{deptAddress}); </insert> </mapper>

**在配置工厂的时候，我们可以配置mapperLocations属性，这样一来，我们就不用在Mybatis中逐个加载配置文件了。**

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource" ref="dataSource" />
            
            <property name="configLocation" value="classpath:myBatis-config.xml" />
    
            
            
            <property name="mapperLocations" value="classpath:zhongfucheng/dao/*.xml"/>
        </bean>

--------------------

[SouthEast]: /images/20210827/d29b366d48494b9f80c13797c548ab28.png