新建maven项目

添加依赖

             
      
       org.springframework.boot
              
      
       spring-boot-starter-parent
              
      
       1.5.2.RELEASE
          
         
             
                  
       
        org.springframework.boot
                   
       
        spring-boot-starter-web
               
          
     

一个User类

public class User {    private String name;    private int age;    private String address;        public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    public String getAddress() {        return address;    }    public void setAddress(String address) {        this.address = address;    }}

一个Controller

import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;@RestController  @RequestMapping("/")public class UserController {        @RequestMapping("/testJson")    public User testJson() {        User user = new User();          user.setName("lijia");        user.setAge(27);        user.setAddress("北京");        return user;      }       }

一个启动类

import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic class ApplicationApp {        public static void main(String[] args) {                SpringApplication.run(ApplicationApp.class, args);    }}

启动，然后输入http://localhost:8080/testJson

是不是很简单

 开始我不知道从哪里下手，真好看到了，准备照着da毕竟有大神带路让我少走很多弯路