JSON的解析

谁践踏了优雅 2022-09-26 02:13 179阅读 0赞

import android.app.Activity;import android.os.Bundle;import android.util.Log;import android.view.View;import android.widget.Button;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpGet;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.util.EntityUtils;import org.json.JSONArray;import org.json.JSONObject;/\*\* \* Created by Administrator on 2016/9/15 0015. \*/public class JsonObject extends Activity implements View.OnClickListener \{ private String name; private Button button; @Override protected void onCreate(Bundle savedInstanceState) \{ super.onCreate(savedInstanceState); setContentView(R.layout.test); button = (Button)findViewById(R.id.button); button.setOnClickListener(this); \} private void sendRequestWithHttpClient()\{ new Thread(new Runnable() \{ @Override public void run() \{ try\{ HttpClient httpClient = new DefaultHttpClient(); //指定访问的服务器地址 HttpGet httpGet = new HttpGet("http://app.api.autohome.com.cn/autov4.3/cars/seriesprice-a2-pm2-v4.3.0-b42-t1.html"); HttpResponse httpResponse = httpClient.execute(httpGet); if(httpResponse.getStatusLine().getStatusCode()==200)\{ //请求和响应都成功了 HttpEntity entity = httpResponse.getEntity(); String response = EntityUtils.toString(entity,"utf-8"); parseJSONWithJSONObject(response); \} \}catch (Exception e)\{ e.printStackTrace(); \} \} \}).start(); \} /\*\* \* 机器是如何读取指令 \* \{（左花括号）指“开始读取对象” \* \}（右花括号）指“结束读取对象” \* \[（左方括号）指“开始读取数组” \* \]（右方括号）指“结束读取数组” \* 以下根据列子 \* @param jsonData \*/ private void parseJSONWithJSONObject(String jsonData)\{ try\{ //第一个是花括号，所以使用JSONObject读取 JSONObject jsonArray = new JSONObject(jsonData); //result的对应值是花括号，是对象，所以使用JSONObject读取，参数为键值 JSONObject resultObject = jsonArray.getJSONObject("result"); //fctlist的对应值是方括号，是数组，所以使用JSONArray读取，参数是键值 JSONArray fctlistArray = resultObject.getJSONArray("fctlist"); if(fctlistArray.length()==0)\{ return; \} //方括号后紧跟一个左花括号，这里fctlist数组内只有1个对象，所以getJSONObject(0)，数组下标 // 从0开始，获取第一个对象，所以使用JSONObject读取 JSONObject factory = fctlistArray.getJSONObject(0); if(!factory.has("serieslist"))\{ return; \} //serieslist的对应值为数组，方括号，所以使用JSONArray读取，参数为键值。 JSONArray seriesArray = factory.getJSONArray("serieslist"); //这个数组都是对象，所以使用遍历 for (int i=0;i<seriesArray.length();i++)\{ JSONObject series = seriesArray.getJSONObject(i); //参数为键值 name= series.getString("name"); Log.d("1111111111",name); \} \}catch (Exception e)\{ e.printStackTrace(); \} \} @Override public void onClick(View v) \{ switch (v.getId())\{ case R.id.button: sendRequestWithHttpClient(); break; default: break; \} \}\}