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pom.xml 내용 추가

		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-mapper-asl</artifactId>
			<version>1.9.13</version>
		</dependency>
		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-core-asl</artifactId>
			<version>1.9.13</version>
		</dependency>

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.io.IOException;
import java.util.ArrayList;

import org.codehaus.jackson.JsonGenerationException;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;
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 String jsonTest() throws JsonGenerationException, JsonMappingException, IOException {
		
		// 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);
		
		ObjectMapper mapper = new ObjectMapper();
		String jsonString = mapper.writeValueAsString(test);
		
		return jsonString;
	}
}

실행

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