Struts2+Spring+Mybatis环境搭建

1. 首先创建一个Dynamic Web Project，名为SSM_Example

     在WEB_INF目录下创建web.xml

  
      
  
    SSM_Example  
  
    
        login.jsp
    
 

2. 把struts2所需的jar包放到工程的WEB-INF\lib目录下

     所需的jar包有：

commons-fileupload-1.3.1.jar
commons-io-2.2.jar
commons-lang-2.4.jar
commons-lang3-3.1.jar
commons-logging-1.1.3.jar
commons-logging-api-1.1.jar
freemarker-2.3.19.jar
javassist-3.11.0.GA.jar
ognl-3.0.6.jar
struts2-core-2.3.16.3.jar
xwork-core-2.3.16.3.jar

    在src目录下创建struts.xml文件

    
    
        
            /jsp/home.jsp
            login.jsp
        
    

     在web.xml中添加如下代码

  
        struts2  
        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter   
      
      
        struts2  
        /*  
    

     在WebContent根目录创建login.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>







    login page
    

        UserName

        Password

        
    

      在WebContent目录下创建jsp文件夹，在文件夹里创建home.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>







    home page

      在src中创建com.ssm.action包，在包下创建LoginAction类，LoginAction类继承ActionSupport

package com.ssm.action;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;

import com.opensymphony.xwork2.ActionSupport;
import com.ssm.dto.User;
import com.ssm.service.ILoginService;

@Controller
public class LoginAction extends ActionSupport {

	/**
	 * serialVersionUID.
	 */
	private static final long serialVersionUID = 1L;

	private String userName;
	
	private String password;


	public void setUserName(String userName) {
		this.userName = userName;
	}

	public void setPassword(String password) {
		this.password = password;
	}
	
	@Override
	public String execute() throws Exception {
		return SUCCESS;
	}
	
}

3. 配置Spring，把Spring的jar包放在lib目录下：

aopalliance-1.0.jar  
spring-aop-3.0.2.RELEASE.jar  
spring-beans-3.0.5.RELEASE.jar  
spring-context-3.0.5.RELEASE.jar  
spring-core-3.0.5.RELEASE.jar  
spring-expression-3.0.5.RELEASE.jar  
spring-jdbc-3.0.5.RELEASE.jar  
spring-tx-3.0.5.RELEASE.jar  
spring-web-3.0.5.RELEASE.jar  
struts2-spring-plugin-2.3.16.3.jar 

      在WebContent下创建config/applicationContext.xml文件

     在web.xml中添加

        org.springframework.web.context.ContextLoaderListener
    
    
        contextConfigLocation
        /config/applicationContext.xml
    

     在struts.xml中添加

4. 配置Mybatis， 把所需的jar包放到lib目录下

commons-dbcp2-2.0.1.jar
commons-pool2-2.2.jar
mybatis-3.2.6.jar
mybatis-spring-1.2.2.jar
mysql-connector-java-5.1.13.jar

     创建com.ssm.dto包，并创建User.java，在mysql数据库中创建名为javadb的数据库，然后创建User表，对应User这个POJO类

package com.ssm.dto;

public class User {
	private String userName;
	private String password;
	private int userType;
	public String getUserName() {
		return userName;
	}
	public void setUserName(String userName) {
		this.userName = userName;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public int getUserType() {
		return userType;
	}
	public void setUserType(int userType) {
		this.userType = userType;
	}
	
}

     创建com.ssm.dao包，并创建UserMapper.java

package com.ssm.dao;

import com.ssm.dto.User;

public interface UserMapper {
	User getUser(String userName);
}

    在com.ssm.dao目录下创建同名的UserMapper.xml

    
        select *
        from user where username = #{userName}
    

     在applicationContext.xml中添加如下内容

      创建com.ssm.service包，并创建ILoginService接口

package com.ssm.service;

import com.ssm.dto.User;

public interface ILoginService {
	User Login(String userName);
}

     在com.ssm.service目录下创建实现ILoginService的类LoginServiceImpl.java

package com.ssm.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.ssm.dao.UserMapper;
import com.ssm.dto.User;

@Service
public class LoginServiceImpl implements ILoginService {

	@Autowired
	UserMapper userMapper;

	@Override
	public User Login(String userName) {
		return userMapper.getUser(userName);
	}

}

     然后在LoginAction中添加如下代码

@Autowired
	ILoginService loginServiceImpl;
	
	@Override
	public String execute() throws Exception {
		User user = loginServiceImpl.Login(userName);
		
		if(null != user){
			if(user.getPassword().equals(password)){
				return SUCCESS;
			}else{
				return ERROR;
			}
		}else{
			return ERROR;
		}
	}

      到这里项目创建完毕，接下来运行程序，在浏览器中访问http://localhost:8089/SSM_Example/

      在页面中输入正确的UserName和Password就能访问到home page页面，否则页面不跳转。

5. 项目创建的目录结构如下