如何通过JSONArray获取API数据
//My API link //http://gdata.youtube.com/feeds/base/videos?max-results=10&start-//index=1&alt=json&orderby=published&author=astrobixweb //String Method to fetech data from server public static String sendRequest(String url) { String result = ""; try { HttpClient client = new DefaultHttpClient(); HttpParams httpParameters = client.getParams(); HttpConnectionParams.setConnectionTimeout(httpParameters, 5000); HttpConnectionParams.setSoTimeout(httpParameters, 5000); HttpConnectionParams.setTcpNoDelay(httpParameters, true); HttpGet request = new HttpGet(); request.setURI(new URI(url)); HttpResponse response = client.execute(request); InputStream ips = response.getEntity().getContent(); BufferedReader buf = new BufferedReader(new InputStreamReader(ips, "UTF-8")); StringBuilder sb = new StringBuilder(); String s; while (true) { s = buf.readLine(); if (s == null || s.length() == 0) break; sb.append(s); } buf.close(); ips.close(); result = sb.toString(); } catch (Exception e) { e.printStackTrace(); } return result; } } //Here is parser class public static void GroupResult(String url){ try{ JSONArray jsonarray,jsonArray1,jsonArray2 ; JSONObject json ; response=GetJsonObject.sendRequest(url); //data comes into response variable if(response == null){ return; } jsonarray = new JSONArray("["+response+"]"); json = jsonarray.getJSONObject(0); String feed = (json.getString("feed")); Log.v("feed", ""+feed); //try{ jsonarray = new JSONArray("["+feed+"]"); json = jsonarray.getJSONObject(0); String entry = json.getString("entry"); jsonarray = new JSONArray(entry); for (int i = 0; i < jsonarray.length(); i++) { mData=new AstrobixData(); json = jsonarray.getJSONObject(i); String title_array = json.getString("title"); jsonArray1 = new JSONArray("["+title_array+"]"); String title = jsonArray1.getJSONObject(0).getString("$t"); String imagepath=json.getString("content"); jsonArray2=new JSONArray("["+imagepath+"]"); String urliamge=jsonArray1.getJSONObject(0).getString("$t"); } // mData.SetTitle(title); // mList.add(mData); } } // Log.v("title", ""+title_list); } } 有人请帮助获取此API链接的数据。 我必须尝试，我必须通过http获取String变量中的所有数据。 但我想从这个API的2件事，但我无法获取这些是： –
- 标题：
"Sun,Moon, Mars, Rahu and Jupiter Antardasha during Sun's Mahadasha" -
图片：
第1步：复制WEBSERVICE URL并粘贴到您的浏览器，这将点击Web服务并显示响应，使用chrome将更有助于查看JSON响应
第2步：分析JSON响应的结构首先，您将以字符串forms读取完整的响应
从String创建一个JSON OBJECT
现在将该JSON对象转换为JSONARRAY对象，
既然你有一个JSONARRAY
迭代JSON数组并逐个存储Object
在JSON数组的迭代循环内，对于每个JSON OBJECT调用它们的名称值，在JSON中看到你有键值对
你可以调用JSONOBJECT.getString（“检索String的变量名”）;
或者您也可以获得其他类似的数据类型
自己尝试一下，发给我状态，之后会用修改过的代码回复你=============================== ====================================
我试着为你解决它，这是课
package com.hussain.StackOverFlow; import java.io.BufferedReader; import java.io.InputStream; import java.io.InputStreamReader; import java.net.URI; import java.util.ArrayList; 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.params.HttpConnectionParams; import org.apache.http.params.HttpParams; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; public class FarhaSameer1 { public static void main(String[] args) { String asd = FarhaSameer1.sendRequest("http://gdata.youtube.com/feeds/base/videos?max-results=10&start-//index=1&alt=json&orderby=published&author=astrobixweb"); FarhaSameer1.parseFromJSONResponse(asd); } // API link // http://gdata.youtube.com/feeds/base/videos?max-results=10&start-//index=1&alt=json&orderby=published&author=astrobixweb // String Method to fetech data from server public static String sendRequest(String url) { String result = ""; try { HttpClient client = new DefaultHttpClient(); HttpParams httpParameters = client.getParams(); HttpConnectionParams.setConnectionTimeout(httpParameters, 5000); HttpConnectionParams.setSoTimeout(httpParameters, 5000); HttpConnectionParams.setTcpNoDelay(httpParameters, true); HttpGet request = new HttpGet(); request.setURI(new URI(url)); HttpResponse response = client.execute(request); InputStream ips = response.getEntity().getContent(); BufferedReader buf = new BufferedReader(new InputStreamReader(ips,"UTF-8")); StringBuilder sb = new StringBuilder(); String s; while (true) { s = buf.readLine(); if (s == null || s.length() == 0) break; sb.append(s); } buf.close(); ips.close(); result = sb.toString(); } catch (Exception e) { e.printStackTrace(); } return result; } public static void parseFromJSONResponse(String respo) { JSONObject myjson; try { myjson = new JSONObject(respo); JSONObject jsonObj1 = myjson.getJSONObject("feed"); JSONArray jsonObj2 = jsonObj1.getJSONArray("entry"); JSONObject jsonObj3 = jsonObj2.getJSONObject(0); System.out.println(jsonObj3.getJSONObject("content")); System.out.println("here ===>>>"+jsonObj3.getJSONObject("content").get("$t").toString()); } catch (JSONException e) { e.printStackTrace(); } } }
看到第一个方法与你在第二个方法中写的一样，我试图逐步遍历JSON响应。 看你必须小心你的JSON响应
1：您的完整响应是JSON OBJECT
2：如果有任何元素被写成
"some key name " : { " some value " }
这是一个JSON对象
3：如果有任何元素被写成
"some key name " : " some value "
这是你可以得到的json对象里面的值
jsonObject.getString("key name")
4：如果有任何元素被写成
"some key name " : [ " some value " ]
那么这是一个JSON数组，您必须将它带入JSON ARRAY，然后遍历其元素
jsonObject.getJSONARRAY("key name for JSON ARRAY IN RESPONSE ")
然后你可以遍历JSON ARRAY的元素
`jsonArrayObj.get(0);`
现在您可以遍历并检索您想要的值，如果需要任何进一步的帮助，请发布给我