Spring MVC - Object to JSON 반환

출처 : 스프링3(Spring3) - @ResponseBody + jackson을 이용하여 심플하게 구현하기
Chapter16. 스프링 MVC로 REST API 사용하기 · Spring Study Group
Spring에서 JSON과 연동방법 - 와이케이의 마구잡이 - GitHub Pages
[ERROR:] cvc-complex-type.2.1: Element 'mvc ... - kkan's - Tistory

pom.xml 내용 추가

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-core</artifactId>
			<version>2.6.3</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
			<version>2.6.3</version>
		</dependency>

***-servlet.xml 내용 추가

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:jee="http://www.springframework.org/schema/jee"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:security="http://www.springframework.org/schema/security"
       xsi:schemaLocation="http://www.springframework.org/schema/aop       http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
                           http://www.springframework.org/schema/beans     http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
                           http://www.springframework.org/schema/context   http://www.springframework.org/schema/context/spring-context-2.5.xsd
                           http://www.springframework.org/schema/jee       http://www.springframework.org/schema/jee/spring-jee-2.5.xsd
                           http://www.springframework.org/schema/mvc       http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
                           http://www.springframework.org/schema/tx        http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
                           http://www.springframework.org/schema/security  http://www.springframework.org/schema/security/spring-security-2.0.xsd">

	<mvc:annotation-driven>
		<mvc:message-converters>
			<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
				<property name="supportedMediaTypes">
					<list>
						<value>text/html;charset=UTF-8</value>
						<value>application/json;charset=UTF-8</value>
					</list>
				</property>
			</bean>
		</mvc:message-converters>
	</mvc:annotation-driven>

VO 객체

package com.myhome.dto;

import java.util.ArrayList;

public class JSONTest {
	
	private int id;
	private String txt;
	private ArrayList<String> list;
	private String[] arr;

	public String[] getArr() {
		return arr;
	}

	public void setArr(String[] arr) {
		this.arr = arr;
	}

	public ArrayList<String> getList() {
		return list;
	}

	public void setList(ArrayList<String> list) {
		this.list = list;
	}

	public int getId() {
		return id;
	}

	public void setId(int id) {
		this.id = id;
	}

	public String getTxt() {
		return txt;
	}

	public void setTxt(String txt) {
		this.txt = txt;
	}
}

Controller

package com.myhome.ui;

import java.util.ArrayList;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import com.myhome.dto.JSONTest;

@Controller
public class HelloController {

	@RequestMapping(value = "/jsonTest.do", method = RequestMethod.GET, produces = "application/json")
	public @ResponseBody JSONTest jsonTest() {
		
		// 가상의 배열및 리스트에 데이터 add
		ArrayList<String> arraylist = new ArrayList<String>();
		arraylist.add("a");
		arraylist.add("b");
		String[] array = { "a", "b", "c" };

		// VO객체에 SET한후 vo객체자체를 return
		JSONTest test = new JSONTest();
		test.setId(1);
		test.setTxt("textTxt");
		test.setList(arraylist);
		test.setArr(array);
		return test;
	}
}

실행

JavaScript : array to json string

JSON.stringify

function doSave() {
	
	var arr_select_class = [];
	
	var class_combo_list = $('.div_sel_class');
	
	$.each(class_combo_list, function(index, data) {
		var main_yn = $(data).find('#main_yn').attr('checked');
		var sel_class6 = $(data).find('#sel_class6').val();
		
		var data1 = {
			index : index,
			main_yn : main_yn,
			class_index : sel_class6
		};
		
		arr_select_class.push(data1);
	});
	
	var form1 = document.InsertForm2;
	form1.json_select_class.value = JSON.stringify(arr_select_class); 
	form1.submit();
}

Java : json string to json object

		JSONParser parser = new JSONParser();
		JSONObject json_select_class_obj = (JSONObject) parser.parse(json_select_class);
		
		logger.debug(json_select_class_obj.toString());