首先我创建了解析器类 JSONParser.java
package com.example.myparse;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.util.Log;
public class JSONParser {
static InputStream is = null;
static JSONArray jarray = null;
static String json = "";
// constructor
public JSONParser() {
}
public JSONArray getJSONFromUrl(String url) {
StringBuilder builder = new StringBuilder();
HttpClient client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(url);
try {
HttpResponse response = client.execute(httpGet);
StatusLine statusLine = response.getStatusLine();
int statusCode = statusLine.getStatusCode();
if (statusCode == 200) {
HttpEntity entity = response.getEntity();
InputStream content = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(content));
String line;
while ((line = reader.readLine()) != null) {
builder.append(line);
}
} else {
Log.e("==>", "Failed to download file");
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// try parse the string to a JSON object
try {
jarray = new JSONArray( builder.toString());
//System.out.println(""+jarray);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jarray;
}
}
然后像这样在主类中创建一个对象......
ArrayList<HashMap<String, String>> contactList = new ArrayList<HashMap<String, String>>(); // used to display in list view
JSONParser jParser = new JSONParser();
JSONArray json = jParser.getJSONFromUrl(url); // pass your ulr here
for(int i = 0; i <= json.length(); i++) // using for loop for parsing
{
try
{
JSONObject c = json.getJSONObject(i);
String name = c.getString(TAG_NAME);
String imagename = c.getString(TAG_IMAGENAME);
String active = c.getString(TAG_ACTIVE);
String createdon = c.getString(TAG_CREATEDON);
String lastmodifiedon = c.getString(TAG_LASTMODIFIEDON);
String description = c.getString(TAG_DESCRIPTION);
String id = c.getString(TAG_ID);
// If you want to show your parsed value in list view add the values into the array list
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_NAME, name);
map.put(TAG_IMAGENAME, imagename);
map.put(TAG_ACTIVE, active);
map.put(TAG_CREATEDON, createdon);
map.put(TAG_LASTMODIFIEDON, lastmodifiedon);
map.put(TAG_DESCRIPTION, description);
map.put(TAG_ID, id);
// adding HashList to ArrayList
contactList.add(map);
System.out.println("contactlist---->"+contactList);
}
catch (JSONException e)
{
e.printStackTrace();
}
}
我是这样做的。我得到了正确的输出。祝一切顺利。