如何通过JSONArray获取API的数据 [英] How to fetch data of API through JSONArray
问题描述
//我的API链接
//http://gdata.youtube.com/feeds/base/videos?max-results=10&start-//index=1&alt=json&orderby=published&author=astrobixweb
//字符串方法fetech来自服务器的数据
公共静态字符串sendRequest将（字符串URL）{
字符串结果=;
尝试 {
HttpClient的客户端=新DefaultHttpClient（）;
的HttpParams httpParameters = client.getParams（）;
HttpConnectionParams.setConnectionTimeout（httpParameters，5000）;
HttpConnectionParams.setSoTimeout（httpParameters，5000）;
HttpConnectionParams.setTcpNoDelay（httpParameters，真正的）;
HTTPGET请求=新HTTPGET（）;
request.setURI（新的URI（URL））;
HTT presponse响应= client.execute（要求）;
InputStream的IPS = response.getEntity（）的getContent（）。
的BufferedReader BUF =新的BufferedReader（新InputStreamReader的（IPS，
UTF-8））;
StringBuilder的SB =新的StringBuilder（）;
字符串s;
而（真）{
S = buf.readLine（）;
如果（S == NULL || s.length（）== 0）
打破;
sb.append（多个）;
}
buf.close（）;
ips.close（）;
结果= sb.toString（）;
}赶上（例外五）{
e.printStackTrace（）;
}
返回结果;
}
}
//这里是解析器类
公共静态无效的Grou presult（字符串URL）{
尝试{
JSONArray jsonarray，jsonArray1，jsonArray2;
的JSONObject JSON;
响应= GetJsonObject.sendRequest（URL）;
//数据进入响应变量
如果（响应== NULL）{
返回;
}
jsonarray =新JSONArray（[+响应+]）;
JSON = jsonarray.getJSONObject（0）;
串料=（json.getString（饲料））;
Log.v（饲料，+饲料）;
//尝试{
jsonarray =新JSONArray（[+饲料+]）;
JSON = jsonarray.getJSONObject（0）;
字符串项= json.getString（入门）;
jsonarray =新JSONArray（项）;
的for（int i = 0; I＆LT; jsonarray.length（）;我++）
{
MDATA =新AstrobixData（）;
JSON = jsonarray.getJSONObject（ⅰ）;
字符串title_array = json.getString（标题）;
jsonArray1 =新JSONArray（[+ title_array +]）;
字符串标题= jsonArray1.getJSONObject（0）.getString（$ T）;
字符串的ImagePath = json.getString（内容）;
jsonArray2 =新JSONArray（[+的ImagePath +]）;
字符串urliamge = jsonArray1.getJSONObject（0）.getString（$ T）;
}
// mData.SetTitle（职称）;
// mList.add（MDATA）;
}
}
// Log.v（标题，+ title_list）;
}
}
有人请帮助来获取这个API链路的数据。我要尝试，我必须取出的字符串变量，虽然HTTP的所有数据。但我想两件事情，从这个API 但我不能够获取它们是： -
- 标题：
太阳，月亮，火星，罗喉和木星Antardasha在Sun Mahadasha -
图片：
第1步：复制WebService的URL并粘贴到浏览器，这将打击网络服务，并会告诉你的反应，使用Chrome会更有帮助看到JSON响应
步骤2：分析你的JSON响应的结构 首先，你将阅读作为一个字符串的完全缓解
从字符串创建一个JSON对象
现在将其转换JSON对象到JSONARRAY对象，
现在，你有一个JSONARRAY
一个对象遍历JSON阵列和存储一个
的迭代循环的JSON数组中，每个JSON对象通过调用值的 名称 看到JSON你有键值对
您可以拨打JSONOBJECT.getString（它检索字符串变量名）;
或者你可以得到其他数据类型这样也
试试这个你自己的，后我的状态，就会响应你修改code 之后 ================================================== =================
我试图解决这个问题对你来说，这里是班
包com.hussain.StackOverFlow;
进口java.io.BufferedReader中;
进口的java.io.InputStream;
进口java.io.InputStreamReader中;
进口java.net.URI中;
进口的java.util.ArrayList;
进口org.apache.http.Htt presponse;
进口org.apache.http.client.HttpClient;
进口org.apache.http.client.methods.HttpGet;
进口org.apache.http.impl.client.DefaultHttpClient;
进口org.apache.http.params.HttpConnectionParams;
进口org.apache.http.params.HttpParams;
进口org.json.JSONArray;
进口org.json.JSONException;
进口org.json.JSONObject;
公共类FarhaSameer1 {
公共静态无效的主要（字串[] args）
{
字符串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链接
// http://gdata.youtube.com/feeds/base/videos?max-results=10&start-//index=1&alt=json&orderby=published&author=astrobixweb
//字符串方法fetech来自服务器的数据
公共静态字符串sendRequest将（字符串URL）{
字符串结果=;
尝试 {
HttpClient的客户端=新DefaultHttpClient（）;
的HttpParams httpParameters = client.getParams（）;
HttpConnectionParams.setConnectionTimeout（httpParameters，5000）;
HttpConnectionParams.setSoTimeout（httpParameters，5000）;
HttpConnectionParams.setTcpNoDelay（httpParameters，真正的）;
HTTPGET请求=新HTTPGET（）;
request.setURI（新的URI（URL））;
HTT presponse响应= client.execute（要求）;
InputStream的IPS = response.getEntity（）的getContent（）。
的BufferedReader BUF =新的BufferedReader（新的InputStreamReader（IPSUTF-8））;
StringBuilder的SB =新的StringBuilder（）;
字符串s;
而（真）{
S = buf.readLine（）;
如果（S == NULL || s.length（）== 0）
打破;
sb.append（多个）;
}
buf.close（）;
ips.close（）;
结果= sb.toString（）;
}赶上（例外五）{
e.printStackTrace（）;
}
返回结果;
}
公共静态无效parseFromJSONResponse（字符串respo）
{
的JSONObject myjson;
尝试
{
myjson =新的JSONObject（respo）;
JSONObject的jsonObj1 = myjson.getJSONObject（饲料）;
JSONArray jsonObj2 = jsonObj1.getJSONArray（输入）;
的JSONObject jsonObj3 = jsonObj2.getJSONObject（0）;
的System.out.println（jsonObj3.getJSONObject（内容））;
的System.out.println（在这里===＆GT;＆GT;＆gt;中。+ jsonObj3.getJSONObject（内容）获得（$ T）的toString（））;
}
赶上（JSONException E）{
e.printStackTrace（）;
}
}
}
请参阅第一种方法是一样的，你写的 在第二个方法，我想遍历一步JSON响应的一步。 看你要小心你的JSON响应
1：你完全反应是一个JSON对象
2：如果任何元素是这样写
一些主要的名字：{一些价值}
这是一个JSON对象
3：如果任何元素writen像
一些主要的名字：一些价值
这是里面的值，你的JSON对象，你可以通过
获得 jsonObject.getString（键名）
4：如果任何元素writen像
一些主要的名字：一些价值]
那么这是一个JSON数组，你必须把它在一个JSON数组，然后通过
遍历其元素 jsonObject.getJSONARRAY（对JSON数组中的响应键名）
然后就可以通过
遍历JSON数组中的元素 `jsonArrayObj.get（0）;`
现在，您可以遍历和获取你想要的值，如果任何帮助，需要进一步后我
//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);
}
}
Someone please help to fetch the data of this API link. i have to tried and i have to fetched all data in String variable though http. but i want to 2 things from this API but i am not able to fetch these are:-
- title:
"Sun,Moon, Mars, Rahu and Jupiter Antardasha during Sun's Mahadasha" Image:
Step 1 : copy the WEBSERVICE URL and paste in to your browser , this will hit the web service and will show you the response , use chrome will be more helpful to see the JSON response
Step 2 : analyse the structure of your JSON response first of all you will be reading the complete response as a String
create a JSON OBJECT from the String
now convert that JSON object into a JSONARRAY object ,
now that you have a JSONARRAY
iterate the JSON Array and store one by one Object
inside the iteration loop for JSON array , for each JSON OBJECT call the value by their name see in JSON you have key value pairs
you can call JSONOBJECT.getString("variable name which retrieves String ");
or you can get other datatypes like this also
try this on your own , post me the status , will be responding you with modified code afterwards ===================================================================
I tried to resolve it for you , here is the class
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();
}
}
}
see the first method is the same as you wrote it in the second method i am trying to traverse the JSON response step by step. see you have to be careful about your JSON response
1 : your complete response is a JSON OBJECT
2 : if any element is written like
"some key name " : { " some value " }
this is a JSON Object
3 : if any element is writen like
"some key name " : " some value "
this is value inside you json object which you can get by
jsonObject.getString("key name")
4 : if any element is writen like
"some key name " : [ " some value " ]
then this is a JSON Array and you have to take it in to a JSON ARRAY and then traverse its elements by
jsonObject.getJSONARRAY("key name for JSON ARRAY IN RESPONSE ")
and then you can traverse the elements of the JSON ARRAY by
`jsonArrayObj.get(0);`
now you can traverse and retrieve the value you want , post me if any help needed further
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