Java JSON解析示例

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import net.sf.json.util.JSONUtils;

import com.bjdv.common.util.JsonUtil;
import com.mongodb.util.JSON;
 */
public class Test {

/**
 * @param args
 */
public static void main(String[] args) {
String jsonStr = new String("{\"code\":\"1\",\"message\":\"\u7ed3\u679c\u4e3a\u7a7a\",\"sign\":{\"propone\":\"propone\",\"proptwo\":\"proptwo\"},\"columnInfo\":[{\"id\":\"orgId\",\"header\":\"虚拟组织ID\",\"fieldName\":\"orgId\",\"fieldIndex\":\"orgId\",\"sortOrder\":null,\"hidden\":false,\"exportable\":true,\"printable\":true},{\"id\":\"orgName\",\"header\":\"虚拟组织名称\",\"fieldName\":\"orgName\",\"fieldIndex\":\"orgName\",\"sortOrder\":null,\"hidden\":false,\"exportable\":true,\"printable\":true}]}");
System.out.println(jsonStr);
Map jsonMap = parseJSON2Map(jsonStr);
Iterator iterator = jsonMap.entrySet().iterator();
while(iterator.hasNext()){
System.out.println("jsonMap"+"====="+iterator.next().toString());
}
JSONObject jsonObject = JSONObject.fromObject(jsonStr);
String code = jsonObject.getString("code");
System.out.println("code===="+code);
JSONObject sign = jsonObject.getJSONObject("sign");