json字符串解析

基本原理：把json字符串转换为json对象，然后获取对象中的值，使用json-lib-2.4-jdk15jar包

对百度身份证验证api返回的json字符串进行解析

代码如下：

package com.zdl.ex8;

import java.io.BufferedReader;import java.io.InputStream;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.URL;

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

//import org.json.JSONException;/** * @author 作者:superroshan * E-mail: superroshan@163.com * @date 创建时间：2015-6-15 下午3:49:40 * @version 1.0 * @parameter * @since * @return */public class BaiDuApiTest {

 

/** * @param urlAll * :请求接口 * @param httpArg * :参数 * @return 返回结果 */ public static String request(String httpUrl, String httpArg) { BufferedReader reader = null; String result = null; StringBuffer sbf = new StringBuffer(); httpUrl = httpUrl + "?" + httpArg;

try { URL url = new URL(httpUrl); HttpURLConnection connection = (HttpURLConnection) url .openConnection(); connection.setRequestMethod("GET"); // 填入apikey到HTTP header connection.setRequestProperty("apikey", "449bcb6f457e42214e1dd6c65f257b51"); connection.connect(); InputStream is = connection.getInputStream(); reader = new BufferedReader(new InputStreamReader(is, "UTF-8")); String strRead = null; while ((strRead = reader.readLine()) != null) { sbf.append(strRead); sbf.append("\r\n"); } reader.close(); result = sbf.toString(); } catch (Exception e) { e.printStackTrace(); } return result; }// {"errNum":0,"retMsg":"success","retData":{"address":"\u6cb3\u5357\u7701\u6f2f\u6cb3\u5e02","sex":"M","birthday":"1989-01-12"}}

public static void main(String[] args) { // TODO Auto-generated method stub String httpUrl = "http://apis.baidu.com/apistore/idservice/id"; String httpArg = "id=530624197505102205"; String jsonResult = request(httpUrl, httpArg); System.out.println(jsonResult);// try {// JSONObject js=new JSONObject(jsonResult);// JSONArray array = JSONArray.fromObject(jsonResult); JSONObject jsStr = JSONObject.fromObject(jsonResult); JSONObject retData=jsStr.getJSONObject("retData"); String address=retData.getString("address"); System.out.println(address); String sex=retData.getString("sex"); if(sex.equals("M")){ System.out.println("性别：男"); } else{ System.out.println("性别：女");

} String birthday=retData.getString("birthday"); System.out.println(birthday); }

}

转载于:https://www.cnblogs.com/superroshan/p/4679729.html