Spring -- 集成web环境 基础环境搭建

基础环境搭建完成后：集成web环境

准备工作：导入相关依赖

    
        
        
            junit
            junit
            4.12
            test
        
        
        
            org.springframework
            spring-context
            5.0.5.RELEASE
        
        
        
            org.springframework
            spring-test
            5.0.5.RELEASE
        
        
        
            javax.servlet
            javax.servlet-api
            3.1.0
            provided
        

        
        
            javax.servlet.jsp
            javax.servlet.jsp-api
            2.3.1
            provided
        
    

UserDaoImpl.java

package com.tian.dao.impl;


import com.tian.dao.UserDao;

public class UserDaoImpl implements UserDao {
    public void save() {
        System.out.println("save running....");
    }
}

UserServiceImpl.java

package com.tian.service.impl;


import com.tian.dao.UserDao;
import com.tian.service.UserService;

public class UserServiceImpl implements UserService {

    private UserDao userDao;

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

    public void save() {
        userDao.save();
    }
}

applicationContext.xml

UserServlet.java

package com.tian.web;


import com.tian.service.impl.UserServiceImpl;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class UserServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserServiceImpl bean = context.getBean(UserServiceImpl.class);
        bean.save();
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}

web.xml

    
        UserServlet
        com.tian.web.UserServlet
    
    
        UserServlet
        /userServlet