Android 之 网络访问服务器，解析JSON数据
16lz
2021-01-23
提示：在访问网络，或者服务器的数据一定要注意 网络权限的声明：
post的请求方式：
<uses-permission android:name="android.permission.INTERNET"/>
package com.sun.parsejsondata;import java.io.IOException;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.client.ClientProtocolException;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.JSONException;import org.json.JSONObject;import android.test.AndroidTestCase;import android.util.Log;/*{ "index_num":"121286", "total":300, "result_num":10, "web_url":"http://www.aibang.com", "wap_url":"http://wap.aibang.com", "bizs":{ "biz":[{ "id":"19180584-418982077", "name":"北京饭店", "addr":"东城区东长安街号(近王府井大街)", "tel":"4006778919-1011", "cate":"宾馆酒店;美食;其他美食;五星级酒店;婚宴酒店;结婚", "rate":4, "cost":0, "desc":"北京饭店始建于年，位于北京市中心，步行五，毗邻皇宫紫禁城，与繁华的...", "dist":"-1", "lng":"116.411096", "lat":"39.9084880", "img_url":"http://img0.aibangjuxin.com/ipic/15f6cfa4e1cc98cf_8.jpg" }, ... ] }}*//** * 获取网络数据 -- json 格式，并进行解析 * @author Administrator * */public class ParseJson {/** * 解析JSON 数据 * @throws Exception */public void parseJson(String jsonStr) throws Exception{JSONObject root = new JSONObject(jsonStr);// 编号String index_num = (String) root.get("index_num");int total = root.getInt("total");int result_num = root.getInt("result_num");JSONObject bizsO = root.getJSONObject("bizs"); JSONArray arr = bizsO.getJSONArray("biz");for (int i = 0; i < arr.length(); i++) {JSONObject bizs_ =arr.getJSONObject(i);String id = bizs_.getString("id");String addr = bizs_.getString("addr");Log.i("msg","编号："+id+"',地址"+addr);}}/** * 访问网络数据 * @throws IOException * @throws ClientProtocolException */public String accessIntent() throws Exception{// 请求服务器地址String path = "http://169.254.111.39:8080/myjson.html";// Get 方式进行请求HttpGet httpGet = new HttpGet(path);// 默认客户端HttpClient httpClient = new DefaultHttpClient();// 请求响应HttpResponse httpResponse = httpClient.execute(httpGet);// 判断响应结果if(httpResponse.getStatusLine().getStatusCode() == 200){ // 响应成功HttpEntity httpEntity = httpResponse.getEntity(); String result = EntityUtils.toString(httpEntity, "gbk");Log.i("msg",result);return result;}return null;}} post的请求方式：
public class HttpURLActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); System.out.println("start url..."); String url = "http://192.168.2.112:8080/JustsyApp/Applet"; // 第一步，创建HttpPost对象 HttpPost httpPost = new HttpPost(url); // 设置HTTP POST请求参数必须用NameValuePair对象 List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair("action", "downloadAndroidApp")); params.add(new BasicNameValuePair("packageId", "89dcb664-50a7-4bf2-aeed-49c08af6a58a")); params.add(new BasicNameValuePair("uuid", "test_ok1")); HttpResponse httpResponse = null; try { // 设置httpPost请求参数 httpPost.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8)); httpResponse = new DefaultHttpClient().execute(httpPost); //System.out.println(httpResponse.getStatusLine().getStatusCode()); if (httpResponse.getStatusLine().getStatusCode() == 200) { // 第三步，使用getEntity方法活得返回结果 String result = EntityUtils.toString(httpResponse.getEntity()); System.out.println("result:" + result); T.displayToast(HttpURLActivity.this, "result:" + result); } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } System.out.println("end url..."); setContentView(R.layout.main); } } 更多相关文章
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