SSH搭建spring，使用依赖注入的方法

配置文件

 <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>com.lgp</groupId>
     <artifactId>maven_struts_spring</artifactId>
     <packaging>war</packaging>
     <version>0.0.1-SNAPSHOT</version>
     <name>maven_ssh1 Maven Webapp</name>
     <url>http://maven.apache.org</url>
     <properties>
         <project.build.sourceEncoding>
             UTF-8
         </project.build.sourceEncoding>
     </properties>

     <dependencies>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
             <version>3.8.1</version>
             <scope>test</scope>
         </dependency>
         <!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->
         <dependency>
             <groupId>commons-logging</groupId>
             <artifactId>commons-logging</artifactId>
             <version>1.2</version>
         </dependency>

         <!-- 添加struts2依赖 -->
         <dependency>
             <groupId>org.apache.struts</groupId>
             <artifactId>struts2-core</artifactId>
             <version>2.3.31</version>
         </dependency>
         <!-- https://mvnrepository.com/artifact/org.apache.struts/struts2-spring-plugin -->
         <dependency>
             <groupId>org.apache.struts</groupId>
             <artifactId>struts2-spring-plugin</artifactId>
             <version>2.3.31</version>
         </dependency>
         <!-- 添加Spring依赖 -->
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-core</artifactId>
             <version>3.1.1.RELEASE</version>
         </dependency>

         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-beans</artifactId>
             <version>3.1.1.RELEASE</version>
         </dependency>

         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-context</artifactId>
             <version>3.1.1.RELEASE</version>
         </dependency>

         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-jdbc</artifactId>
             <version>3.1.1.RELEASE</version>
         </dependency>
     </dependencies>
     <build>
         <finalName>maven_ssh1</finalName>
         <plugins>
             <plugin>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>2.3.1</version>
                 <configuration>
                     <source>1.7</source>
                     <target>1.7</target>
                     <encoding>UTF-8</encoding>
                 </configuration>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
                 <version>2.12.4</version>
                 <configuration>
                     <testFailureIgnore>true</testFailureIgnore>
                 </configuration>
             </plugin>
         </plugins>
     </build>
 </project>

pom.xml

网上有很多用junit教你搭的，虽然都能跑，但是如果要实际运行和前台交互，那样是不行的，还要导入我所导入的包。

 <?xml version="1.0" encoding="UTF-8"?>
 <web-app xmlns:web="http://xmlns.jcp.org/xml/ns/javaee">
     <display-name>Archetype Created Web Application</display-name>
     <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>/*</url-pattern>
     </filter-mapping>
     <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>
 </web-app>

web.xml

则多了sprig的配置，留意<context-param>，自带的web.xml会报错说版本不对，只要把开头的那一坨玩意去掉即可。

其他就是在resource文件夹下的配置文件

 <?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:aop="http://www.springframework.org/schema/aop"
     xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
     xsi:schemaLocation="
      http://www.springframework.org/schema/beans
      http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
      http://www.springframework.org/schema/tx
      http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
      http://www.springframework.org/schema/aop
      http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
      http://www.springframework.org/schema/context
      http://www.springframework.org/schema/context/spring-context-3.0.xsd">
     <bean id="userDao" class="com.dao.impl.UserDao"></bean>
     <bean id="userService" class="com.service.impl.UserService">
         <property name="userDao" ref="userDao"></property>
     </bean>
     <bean id="userAction" class="com.action.UserAction">
         <property name="userService" ref="userService"></property>
     </bean>
 </beans>

applicationcontext.xml 使用的是依赖注入，这个方法在初学spring的时候，对spring有很好的理解，层层递进，关系明了，当然实际应用通常用注解注入，但是如果我那样写的话，就看不透它的运行轨迹了。

java代码

 package com.service.impl;

 import com.dao.IUserDao;
 import com.service.IUserService;

 public class UserService implements IUserService {
     private IUserDao userDao;

     public void setUserDao(IUserDao userDao) {
         this.userDao = userDao;
     }

     public void add() {
         System.out.println("UserService.add()");
         userDao.add();
     }

 }

 package com.service;

 public interface IUserService {
     public void add();
 }

 package com.dao.impl;

 import com.dao.IUserDao;

 public class UserDao implements IUserDao{

     public void add() {
         System.out.println("UserDao.add()");
     }
 }

 package com.dao;

 public interface IUserDao {
     public void add();
 }

package com.action;

import com.service.IUserService;

public class UserAction {
    private String name;
    private String pwd;
    private IUserService userService;

    public String add() {
        System.out.println("name--" + this.getName());
        System.out.println("pwd---" + this.getPwd());
        userService.add();
        return "success";
    }

    public void setUserService(IUserService userService) {
        this.userService = userService;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }
}

留意是用接口来实现方法的。