1.HttpRequest
package com.joyfulmath.android4example.http; import java.io.BufferedReader;
import java.io.InputStreamReader; 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 com.joyfulmath.android4example.R; import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView; public class HttpDemoActivity extends Activity implements IResult { protected static final String TAG = "httpdemo.HttpDemoActivity";
public Handler mMainHandler;
public static final String RequestUrl = "http://www.baidu.com";
Button mBtnRequest;
TextView mResponseView;
Button mbtn_json;
/*
* (non-Javadoc)
*
* @see android.app.Activity#onCreate(android.os.Bundle)
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_httpdemo_main);
mBtnRequest = (Button) this.findViewById(R.id.btn_request);
mResponseView = (TextView) this.findViewById(R.id.httpdemo_text);
mbtn_json = (Button) this.findViewById(R.id.btn_json);
mBtnRequest.setOnClickListener(new OnClickListener() { @Override
public void onClick(View v) {
WorkThread work = new WorkThread(HttpDemoActivity.this,
RequestUrl);
work.start();
}
}); mbtn_json.setOnClickListener(new OnClickListener() { @Override
public void onClick(View v) { JSonParser parser = new JSonParser();
parser.parser();
}
}); mMainHandler = new Handler() { /*
* (non-Javadoc)
*
* @see android.os.Handler#handleMessage(android.os.Message)
*/
@Override
public void handleMessage(Message msg) {
String str = (String) msg.obj;
Log.i(TAG, "get " + str);
mResponseView.setText(str);
} };
} /*
* (non-Javadoc)
*
* @see android.app.Activity#onStart()
*/
@Override
protected void onStart() {
super.onStart();
} /*
* (non-Javadoc)
*
* @see android.app.Activity#onStop()
*/
@Override
protected void onStop() {
super.onStop();
} /*
* (non-Javadoc)
*
* @see android.app.Activity#onDestroy()
*/
@Override
protected void onDestroy() {
super.onDestroy();
} private class WorkThread extends Thread { IResult mListener;
String address;
String message = "";
public WorkThread(IResult result, String address) {
mListener = result;
this.address = address;
} /*
* (non-Javadoc)
*
* @see java.lang.Thread#run()
*/
@Override
public void run() {
Log.i(TAG, "WorkThread start");
try {
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet(address);
HttpResponse response = client.execute(request);
InputStreamReader inreader = new InputStreamReader(response
.getEntity().getContent());
BufferedReader reader = new BufferedReader(inreader);
String str = reader.readLine();
Log.i(TAG, "WorkThread start str:"+str);
while(str!=null)
{
message+= str;
str = reader.readLine();
} if(mListener!=null)
{
mListener.onResult(message);
} } catch (Exception ex) {
Log.i(TAG, "WorkThread ex:"+ex.getMessage());
}
} } @Override
public void onResult(String msg) {
Message message = new Message();
message.what = 1;
message.obj = msg;
mMainHandler.sendMessage(message);
}
}
package com.joyfulmath.android4example.http;
public interface IResult {
void onResult(String msg);
}json格式解析：
package com.joyfulmath.android4example.http; import org.json.JSONArray;
import org.json.JSONObject;
import org.json.JSONTokener; import android.util.Log; public class JSonParser {
private static final String JSON =
"{" +
" \"phone\" : [\"12345678\", \"87654321\"]," +
" \"name\" : \"yuanzhifei89\"," +
" \"age\" : 100," +
" \"address\" : { \"country\" : \"china\", \"province\" : \"jiangsu\" }," +
" \"married\" : false" +
"}";
private static final String TAG = "httpdemo.JSonParser"; public void parser()
{
Log.i(TAG, "[parser]");
try{
JSONTokener jsonparser = new JSONTokener(JSON);
JSONObject person = (JSONObject) jsonparser.nextValue();
JSONArray pbones = person.getJSONArray("phone");
Log.i(TAG, "[parser]pbones:"+pbones.getString(0)+" "+pbones.getString(1)); String name = person.getString("name");
Log.i(TAG, "[parser]name:"+name); }catch(Exception ex)
{
Log.i(TAG, "[parser]ex:"+ex.getMessage());
} }
}
xml解析：
三种：DOM，SAX，PULL
android 常用的xmlpullreader：
package com.joyfulmath.android4example.http; import java.io.IOException; import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException; import com.joyfulmath.android4example.R; import android.content.res.Resources;
import android.content.res.XmlResourceParser;
import android.util.Log; public class XmlParser { private static final String TAG = "httpdemo.XmlParser"; // pull
/*xmlpullparser 不关心xml的结构属性，它就是开始，结束，属性，value。
*
* */
public void pullXml(Resources res) {
Log.i(TAG, "[pullXml]");
XmlResourceParser parser = res.getXml(R.layout.layout_httpdemo_main);// xmlpullparser
int eventType;
try {
eventType = parser.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
if (eventType == XmlPullParser.START_DOCUMENT) {
Log.i(TAG, "[pullXml] START_DOCUMENT");
} else if (eventType == XmlPullParser.START_TAG) {
Log.i(TAG, "[pullXml] START_TAG:" + parser.getName());
int count = parser.getAttributeCount();
Log.i(TAG, "[pullXml] \t count" + count );
for (int i = 0; i < count; i++) {
String noteName = parser.getAttributeName(i);
Log.i(TAG, "[pullXml] \t noteName:" + noteName + " at " + i);
if(noteName.equals("id")||noteName.equals("text"))
{
String value = parser.getAttributeValue(i);
Log.i(TAG, "[pullXml]\t noteValue:" + value + " at " + i);
}
}
} else if (eventType == XmlPullParser.END_TAG) {
Log.i(TAG, "[pullXml] END_TAG:" + parser.getName());
} else if (eventType == XmlPullParser.TEXT) {
Log.i(TAG, "[pullXml] TEXT:" + parser.getText());
} eventType = parser.next();
} Log.i(TAG, "[pullXml] END_DOCUMENT");
} catch (XmlPullParserException | IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} }
}