Struts2+Spring+Mybatis框架集成的搭建。（SSM形式）

た入场券 2022-08-09 17:42 5阅读 0赞

**1. jar包**  
struts2：相关jar  
spring：相关加入  
struts2-spring-plugin.jar：spring和struts集成jar  
mybatis：相关jar  
mysql：数据库驱动包（这里用mysql作为样本）  
mybatis-spring-1.2.1.jar：mybatis和spring集成jar  
dbcp：database连接池  
jstl：c标签（前台）  
junit：测试相关  
如果还需其他jar，自己加

**2. 首先配置web.xml**

<?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>SSM</display-name>
      <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
      </welcome-file-list>
    
        
        <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath：applicationContext.xml</param-value>
        </context-param>
    
        <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
        </listener>
    
        
        <filter>
            <filter-name>struts2</filter-name>
            <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
        </filter>
        <filter-mapping>
            <filter-name>struts2</filter-name>
            <url-pattern>*.action</url-pattern>
        </filter-mapping>
    
    </web-app>

**3. 配置连接数据库参数： jdbc.properties**

username=root
    password=123
    driverClassName=com.mysql.jdbc.Driver
    url=jdbc:mysql://localhost:3306/ssm

**4. 配置Spring主配置文件(就是Spring监视器中的location)**

<?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"
            xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
                http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">
    
            
            <context:component-scan base-package="com.spring_struts"></context:component-scan>
    
            
            <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
                <property name="locations" value="classpath:jdbc.properties"></property>
            </bean>
    
            <bean class="org.apache.commons.dbcp2.BasicDataSource" id="dataSource" destroy-method="close">
                <property name="url" value="${url}"></property>
                <property name="username" value="${username}"></property>
                <property name="driverClassName" value="${driverClassName}"></property>
                <property name="password" value="${password}"></property>
            </bean>
    
            
            
            <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer" id="mapperScannerConfigurer">
                
                <property name="basePackage" value="com.spring_struts.mapper"></property>
                
                <property name="annotationClass" value="com.spring_struts.annotation.MybatisAnotation"></property>
            </bean>
    
            
            <bean class="org.mybatis.spring.SqlSessionFactoryBean" id="sqlSessionFactoryBean">
                
                <property name="dataSource" ref="dataSource"></property>
                
                <property name="mapperLocations" value="classpath:com/spring_struts/mapper/mapperxml/*.xml"></property>
                
                <property name="configLocation" value="classpath:SqlMapConfig.xml"></property>
            </bean>
    
        </beans>

**5. 创建struts.xml配置文件**

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
        "http://struts.apache.org/dtds/struts-2.3.dtd">
    <struts>
        <package name="user_default" extends="struts-default" namespace="/user" >
            
            <action name="findall" class="userAction">
                <result>/WEB-INF/jsp/userlist.jsp</result>
            </action>
            
            <action name="add" class="userAction" method="addUser">
                <result type="chain">findall</result>
            </action>
            <action name="delete" class="userAction" method="delete">
                <result type="chain" >findall</result>
            </action>
        </package>
    </struts>

**6.注解类 com.spring\_struts.annotation.MybatisAnotation：**

package com.spring_struts.annotation;
    
    public @interface MybatisAnotation {
        //定义属性,类名称
        String value() default "";
    }

**7.Mybatis接口：Mapper.java**

package com.spring_struts.mapper;
    import java.util.List;
    import com.spring_struts.annotation.MybatisAnotation;
    import com.spring_struts.entity.User;
    
    //自定义的注解
    @MybatisAnotation
    public interface Mapper {
        
    
        public List<User> findAll();
    
        public void addUser(String uname);
    
        public void delete(User user);
    
        public void dele(int id);
    }

**8.Mybatis的xml文件**

<?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE mapper PUBLIC "-//ibatis.apache.org//DTD Mapper 3.0//EN"      
     "http://ibatis.apache.org/dtd/ibatis-3-mapper.dtd">
     
    <mapper namespace="com.spring_struts.mapper.Mapper">
    
        <select id="findAll" resultType="com.spring_struts.entity.User">
            select * from t_user    
        </select>
    
        <insert id="addUser" parameterType="java.lang.String">
            insert into t_user values(null,#{uname})
        </insert>
    
        <update id="delete" parameterType="com.spring_struts.entity.User">
            update t_user set uname=#{uname} where id=#{id}
        </update> 
    
        <delete id="dele" parameterType="int">
            delete from t_user where id=#{id}
        </delete> 
    </mapper>

**9.mybatis主配置文件：**

<?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE configuration PUBLIC "-//ibatis.apache.org//DTD Config 3.0//EN" 
        "http://ibatis.apache.org/dtd/ibatis-3-config.dtd">
    
    <configguration>
        
        <typeAliases>
            <typeAlias type="com.ssm.entity.Emp" alias="emp"/>
        </typeAliases>
        
    </configguration>

注意：在Struts的Action中，要是使用注解 @Controller(“userAction”)