SpringBoot之返回json數(shù)據(jù)的實(shí)現(xiàn)方法
出處：jb51.net/article/152751.htm
一、創(chuàng)建一個(gè)springBoot個(gè)項(xiàng)目
操作詳情參考：1.SpringBoo之Helloword 快速搭建一個(gè)web項(xiàng)目
二、編寫實(shí)體類
/**
?* Created by CR7 on 2017-8-18 返回Json數(shù)據(jù)實(shí)體類
?*/
public?class?User?{
??private?int?id;
??private?String username;
??private?String password;
??public?String getPassword()?{
????return?password;
??}
??public?void?setPassword(String password)?{
????this.password = password;
??}
??public?String getUsername()?{
????return?username;
??}
??public?void?setUsername(String username)?{
????this.username = username;
??}
??public?int?getId()?{
????return?id;
??}
??public?void?setId(int?id)?{
????this.id = id;
??}
}三、編寫控制層Controller類
/**
?* Created by CR7 on 2017-8-18 返回Json數(shù)據(jù)實(shí)體類
?*/
public?class?User?{
??private?int?id;
??private?String username;
??private?String password;
??public?String getPassword()?{
????return?password;
??}
??public?void?setPassword(String password)?{
????this.password = password;
??}
??public?String getUsername()?{
????return?username;
??}
??public?void?setUsername(String username)?{
????this.username = username;
??}
??public?int?getId()?{
????return?id;
??}
??public?void?setId(int?id)?{
????this.id = id;
??}
}四、測(cè)試返回Json數(shù)據(jù)
瀏覽器輸入http://localhost:8080/user/getUser
得出結(jié)果：服務(wù)器是以json數(shù)據(jù)格式返回給瀏覽器
五、返回list到頁(yè)面
5.1.返回?cái)?shù)據(jù)的controller
package com.example.demo;
import?com.example.bean.User;
import?org.springframework.web.bind.annotation.RequestMapping;
import?org.springframework.web.bind.annotation.RestController;
import?java.util.ArrayList;
import?java.util.List;
/**
?* Created by CR7 on 2017-8-18 Json返回?cái)?shù)據(jù)的Controller
?*/
@RestController
@RequestMapping("user")
public?class?ReturnJsoncontroller?{
??
??@RequestMapping("getUserList")
??public?List getUserList(){
????User user1 = new?User();
????user1.setId(1);
????user1.setUsername("zhanghaoliang");
????user1.setPassword("123");
????User user2 = new?User();
????user2.setId(2);
????user2.setUsername("chensi");
????user2.setPassword("456");
????User user3 = new?User();
????user3.setId(3);
????user3.setUsername("doudou");
????user3.setPassword("789");
????List list?= new?ArrayList<>();
????list.add(user1);
????list.add(user2);
????list.add(user3);
????return?list;
??}
} 5.2.得出結(jié)果
在瀏覽器訪問(wèn) http://localhost:8080/user/getUserList
六、返回map到瀏覽器
既然返回實(shí)體，和list的試驗(yàn)過(guò)了，那么再試驗(yàn)一下返回Map類型的數(shù)據(jù)吧
6.1返回的Controller
package com.example.demo;
import?com.example.bean.User;
import?org.springframework.web.bind.annotation.RequestMapping;
import?org.springframework.web.bind.annotation.RestController;
import?java.util.ArrayList;
import?java.util.HashMap;
import?java.util.List;
import?java.util.Map;
/**
?* Created by CR7 on 2017-8-18 Json返回?cái)?shù)據(jù)的Controller
?*/
@RestController
@RequestMapping("user")
public?class?ReturnJsoncontroller?{
??@RequestMapping("getUserMap")
??public?Map getUserMap(){
????User user1 = new?User();
????user1.setId(1);
????user1.setUsername("zhanghaoliang");
????user1.setPassword("123");
????User user2 = new?User();
????user2.setId(2);
????user2.setUsername("chensi");
????user2.setPassword("456");
????User user3 = new?User();
????user3.setId(3);
????user3.setUsername("doudou");
????user3.setPassword("789");
????Map map?= new?HashMap<>();
????map.put("user1",user1);
????map.put("user2",user2);
????map.put("user3",user3);
????return?map;
??}
} 6.2得出的結(jié)果
在瀏覽器中訪問(wèn)http://localhost:8080/user/getUserMap
評(píng)論
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