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@ResponseBody //jsp 없이 비동기 처리
package com.controller;
import java.util.ArrayList;
import java.util.HashMap;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.dto.Login;
@Controller
public class MainController {
//<mvc:view-controller path="/" view-name="home"/>
/*
* @Override public void addViewControllers(ViewControllerRegistry registry) {
* registry.addViewController("/").setViewName("main"); }
*/
@RequestMapping("/aaa")
public @ResponseBody Login aaa() {
Login login= new Login();
login.setUserid("홍길동");
login.setPasswd("1234");
return login ;
}
@RequestMapping("/bbb")
public @ResponseBody ArrayList<Login> bbb() {
ArrayList<Login> list = new ArrayList<Login>();
list.add(new Login("홍길동1", "10"));
list.add(new Login("홍길동2", "20"));
list.add(new Login("홍길동3", "30"));
return list ;
}
@RequestMapping("/ccc")
public @ResponseBody HashMap<String, ArrayList<Login>> ccc() {
System.out.println("/ccc 호출====================");
HashMap<String, ArrayList<Login>> map= new HashMap<String, ArrayList<Login>>();
ArrayList<Login> list1 = new ArrayList<Login>();
list1.add(new Login("홍길동1", "10"));
list1.add(new Login("홍길동2", "20"));
list1.add(new Login("홍길동3", "30"));
ArrayList<Login> list2 = new ArrayList<Login>();
list2.add(new Login("이순신1", "10"));
list2.add(new Login("이순신2", "20"));
list2.add(new Login("이순신3", "30"));
map.put("one", list1);
map.put("two", list2);
return map;
}
}main.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$("#aaa").on("click",function(){
$.ajax({
url:"aaa",
type:"get",
dataType:"json",
success:function(data,status,xhr){
console.log(data, data.userid,data.passwd);
$("#result").text(JSON.stringify(data));
},
error:function(xhr,status,error){}
});
});
$("#bbb").on("click",function(){
$.ajax({
url:"bbb",
type:"get",
dataType:"json",
success:function(data,status,xhr){
console.log(data, data.userid,data.passwd);
$("#result").text(JSON.stringify(data));
},
error:function(xhr,status,error){}
});
});
$("#ccc").on("click",function(){
console.log("============");
$.ajax({
url:"ccc",
type:"get",
dataType:"json",
success:function(data,status,xhr){
console.log(data);
console.log(data.one);
console.log(data.two);
$("#result").text(JSON.stringify(data));
},
error:function(xhr,status,error){
console.log("=========",error);
}
});
});
});
</script>
</head>
<body>
<button id="aaa">aaa호출 : login</button>
<button id="bbb">bbb호출 : ArrayList</button>
<button id="ccc">ccc호출 : HashMap</button>
<div id="result"></div>
</body>
</html>
@RestController //주소처리가 자동으로 @ResponseBody 처리(함수에서 @ResponseBody가 빠짐)
package com.controller;
import java.util.ArrayList;
import java.util.HashMap;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import com.dto.Login;
//@Controller
@RestController
public class MainController {
//<mvc:view-controller path="/" view-name="home"/>
/*
* @Override public void addViewControllers(ViewControllerRegistry registry) {
* registry.addViewController("/").setViewName("main"); }
*/
@RequestMapping("/aaa")
public Login aaa() {
Login login= new Login();
login.setUserid("홍길동");
login.setPasswd("1234");
return login ;
}
@RequestMapping("/bbb")
public ArrayList<Login> bbb() {
ArrayList<Login> list = new ArrayList<Login>();
list.add(new Login("홍길동1", "10"));
list.add(new Login("홍길동2", "20"));
list.add(new Login("홍길동3", "30"));
return list ;
}
@RequestMapping("/ccc")
public HashMap<String, ArrayList<Login>> ccc() {
System.out.println("/ccc 호출====================");
HashMap<String, ArrayList<Login>> map= new HashMap<String, ArrayList<Login>>();
ArrayList<Login> list1 = new ArrayList<Login>();
list1.add(new Login("홍길동1", "10"));
list1.add(new Login("홍길동2", "20"));
list1.add(new Login("홍길동3", "30"));
ArrayList<Login> list2 = new ArrayList<Login>();
list2.add(new Login("이순신1", "10"));
list2.add(new Login("이순신2", "20"));
list2.add(new Login("이순신3", "30"));
map.put("one", list1);
map.put("two", list2);
return map;
}
}
ResponseEntity(@ResponseBody 역할 + 상태코드 및 필요한 데이터를 저장하여 전달)
package com.controller;
import java.util.ArrayList;
import java.util.HashMap;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import com.dto.Login;
//@Controller
@RestController //@Controller + @ResponseBody
public class MainController {
//<mvc:view-controller path="/" view-name="home"/>
/*
* @Override public void addViewControllers(ViewControllerRegistry registry) {
* registry.addViewController("/").setViewName("main"); }
*/
@RequestMapping("/ddd")
public ResponseEntity<Login> ddd() {
Login login= new Login();
login.setUserid("홍길동");
login.setPasswd("1234");
ResponseEntity<Login> entity= //ResponseEntoty = @ResponseBody 역할
ResponseEntity.status(200).body(login); //상태코드 및 필요한 데이터를 저장 후 전달 가능
return entity; //200 = 정상일 때
}
@RequestMapping("/aaa")
public Login aaa() {
Login login= new Login();
login.setUserid("홍길동");
login.setPasswd("1234");
return login ;
}
@RequestMapping("/bbb")
public ArrayList<Login> bbb() {
ArrayList<Login> list = new ArrayList<Login>();
list.add(new Login("홍길동1", "10"));
list.add(new Login("홍길동2", "20"));
list.add(new Login("홍길동3", "30"));
return list ;
}
@RequestMapping("/ccc")
public HashMap<String, ArrayList<Login>> ccc() {
System.out.println("/ccc 호출====================");
HashMap<String, ArrayList<Login>> map= new HashMap<String, ArrayList<Login>>();
ArrayList<Login> list1 = new ArrayList<Login>();
list1.add(new Login("홍길동1", "10"));
list1.add(new Login("홍길동2", "20"));
list1.add(new Login("홍길동3", "30"));
ArrayList<Login> list2 = new ArrayList<Login>();
list2.add(new Login("이순신1", "10"));
list2.add(new Login("이순신2", "20"));
list2.add(new Login("이순신3", "30"));
map.put("one", list1);
map.put("two", list2);
return map;
}
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