Springboot演示小Demo

模拟数据库演示springboot小测试

1、编写一个实体类：user

 package com.wisezone.test;

 import java.io.Serializable;

 public class User implements Serializable {

     private Integer userId;//用户id
     private String userName;//用户名
     private String age;//用户年龄
     private String address;//用户地址

     public Integer getUserId() {
         return userId;
     }
     public void setUserId(Integer userId) {
         this.userId = userId;
     }

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

     public String getAge() {
         return age;
     }
     public void setAge(String age) {
         this.age = age;
     }

     public String getAddress() {
         return address;
     }
     public void setAddress(String address) {
         this.address = address;
     }

 }

2、编写一个dao：userDao

 package com.wisezone.test;

 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Repository;

 @Repository
 public class UserDao {
     private static final Logger logger = LoggerFactory.getLogger(UserDao.class);

     public User findUser(String userName) {
         logger.info("根据用户名查询：{}",userName);
         User user = new User();
         user.setUserId(10);
         user.setUserName("上海上海");
         user.setAge("20");
         user.setAddress("上海市浦东新区上浦路888弄888号888室");
         return user;
     }
 }

3、编写一个service：userService

 package com.wisezone.test;

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

 @Service
 public class UserService {

     @Autowired
     private UserDao userDao;

     public User findUserByUserName(String userName) {
         return userDao.findUser(userName);
     }
 }

4、编写一个controller：userController

 package com.wisezone.test;

 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.ResponseBody;

 @RequestMapping("user")
 @Controller
 public class UserController
 {
     @Autowired
     private UserService userService;

     @RequestMapping("find")
     @ResponseBody
     public User findUser(String userName) {

         return userService.findUserByUserName(userName);
     }
 }

5、main方法测试

 package com.wisezone.test;

 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;

 @SpringBootApplication
 public class Application {

     public static void main(String[] args) {
         SpringApplication.run(Application.class, args);
     }
 }

Console：

浏览器：http://localhost:8080/user/find/?userName=hello