HttpUrlConnection与HttpClient的post、get的请求网络数据的方法
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package com.example.twentyfivecode;import java.io.BufferedReader;import java.io.DataOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.UnsupportedEncodingException;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URI;import java.net.URL;import java.util.ArrayList;import java.util.List;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.NameValuePair;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.HttpGet;import org.apache.http.client.methods.HttpPost;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.message.BasicNameValuePair;import org.apache.http.util.EntityUtils;import android.app.Activity;import android.content.Entity;import android.net.Uri;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.widget.Button;import android.widget.TextView;/** * @author HD * @date 2015-12-6 * @package_name com.example.twentyfivecode * @file_name MainActivity.java */public class MainActivity extends Activity {// 用HttpURLConnection的GET方法发送请求 private Button btnHttpURLGetRequest;// 用HttpURLConnection的POST方法发送请求 private Button btnHttpURLPostRequest;// 用HttpClient的Post方法发送请求 private Button btnPostRequest;// 用HttpClient的GET方法发送请求 private Button btnGetRequest;// 用来显示响应的文本 private TextView tvResponse; public static final int SHOW_RESPONSE = 0; Handler handler = new Handler() { public void handleMessage(Message msg) { switch (msg.what) { case SHOW_RESPONSE: String response = (String) msg.obj; tvResponse.setText(response); break; } }; }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); btnHttpURLGetRequest = (Button) findViewById(R.id.btnHttpURLGetRequest); btnHttpURLPostRequest = (Button) findViewById(R.id.btnHttpURLPostRequest); btnPostRequest = (Button) findViewById(R.id.btnPostRequest); btnGetRequest = (Button) findViewById(R.id.btnGetRequest); tvResponse = (TextView) findViewById(R.id.tvResponse); btnGetRequest.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) {// 用HttpClient的GET方法发送请求 sendRequestWithHttpClientWithGET(); } }); btnHttpURLGetRequest.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) {// 用HttpURLConnection的GET方法发送请求 sendRequestWithHttpURLGet(); } }); btnPostRequest.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) {// 用HttpClient的POST方法发送请求 sendRequestWithHttpClientPOST(); } }); btnHttpURLPostRequest.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) {// 用HttpURLConnection的POST方法发送请求 sendRequestWithHttpURLPost(); } }); } private void sendRequestWithHttpURLGet() { new Thread(new Runnable() { @Override public void run() { // TODO 自动生成的方法存根 try { URL url = new URL("http://wwww.baidu.com"); HttpURLConnection conn = (HttpURLConnection) url .openConnection(); conn.setConnectTimeout(8 * 1000); conn.setReadTimeout(8 * 1000); conn.setRequestMethod("GET"); conn.connect(); InputStream inputStream = conn.getInputStream(); BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(inputStream)); String line = ""; StringBuilder builder = new StringBuilder(); while ((line = bufferedReader.readLine()) != null) { builder.append(line); } Message msg = new Message(); msg.what = SHOW_RESPONSE; msg.obj = builder.toString(); handler.sendMessage(msg); } catch (MalformedURLException e) { // TODO 自动生成的 catch 块 e.printStackTrace(); } catch (IOException e) { // TODO 自动生成的 catch 块 e.printStackTrace(); } } }).start(); } private void sendRequestWithHttpURLPost() { new Thread(new Runnable() { @Override public void run() { // TODO 自动生成的方法存根 try { URL url = new URL("http://www.baidu.com"); HttpURLConnection conn = (HttpURLConnection) url .openConnection(); conn.setReadTimeout(8 * 1000); conn.setConnectTimeout(8 * 1000); conn.setRequestMethod("POST");// 获得向服务器发送数据的输出流 DataOutputStream outputStream = new DataOutputStream(conn .getOutputStream());// 向输出流中写提交的数据，必须是键值对，并且中间用&符号分隔 outputStream .writeBytes("username = admin&password = 123456"); InputStream inputStream = conn.getInputStream(); BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(inputStream)); String line = ""; StringBuilder builder = new StringBuilder(); while ((line = bufferedReader.readLine()) != null) { builder.append(line); } Message msg = new Message(); msg.what = SHOW_RESPONSE; msg.obj = builder.toString(); handler.sendMessage(msg); } catch (MalformedURLException e) { // TODO 自动生成的 catch 块 e.printStackTrace(); } catch (IOException e) { // TODO 自动生成的 catch 块 e.printStackTrace(); } } }).start(); } private void sendRequestWithHttpClientWithGET() { new Thread(new Runnable() { @Override public void run() { // TODO 自动生成的方法存根 HttpClient client = new DefaultHttpClient(); HttpGet httpGet = new HttpGet("http://www.baidu.com"); try {// 服务器响应的所有信息都在httpResponse中 HttpResponse httpResponse = client.execute(httpGet);// 取出信息中的状态码，如果等于200就说明请求和响应都成功了 if (httpResponse.getStatusLine().getStatusCode() == 200) {// 取出实例 HttpEntity entity = httpResponse.getEntity();// 用EntityUTils的静态方法把entity实例转换成字符串，为了避免产生乱码，指定用"utf-8"解码 String response = EntityUtils.toString(entity, "utf-8"); Message msg = new Message(); msg.what = SHOW_RESPONSE; msg.obj = response; handler.sendMessage(msg); } } catch (ClientProtocolException e) { // TODO 自动生成的 catch 块 e.printStackTrace(); } catch (IOException e) { // TODO 自动生成的 catch 块 e.printStackTrace(); } } }).start(); } private void sendRequestWithHttpClientPOST() { new Thread(new Runnable() { @Override public void run() { // TODO 自动生成的方法存根 HttpClient client = new DefaultHttpClient(); HttpPost httpPost = new HttpPost("http://www.baidu.com");// 需要发送给服务器的数据集合，以NameValuePair的实例集合方法 List<NameValuePair> list = new ArrayList<NameValuePair>(); list.add(new BasicNameValuePair("username", "admin")); list.add(new BasicNameValuePair("password", "123456")); UrlEncodedFormEntity entity; try {// 把list转换成一个Entity实例 entity = new UrlEncodedFormEntity(list, "utf-8");// 把Entity放至HttpPost中 httpPost.setEntity(entity); HttpResponse httpResponse = client.execute(httpPost); if (httpResponse.getStatusLine().getStatusCode() == 200) { HttpEntity httpEntity = httpResponse.getEntity(); String response = EntityUtils.toString(httpEntity, "UTF-8"); Message msg = new Message(); msg.what = SHOW_RESPONSE; msg.obj = response; handler.sendMessage(msg); } } catch (UnsupportedEncodingException e) { // TODO 自动生成的 catch 块 e.printStackTrace(); } catch (ClientProtocolException e) { // TODO 自动生成的 catch 块 e.printStackTrace(); } catch (IOException e) { // TODO 自动生成的 catch 块 e.printStackTrace(); } } }).start(); }}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <Button android:id="@+id/btnGetRequest" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="HttpClient的GET方法请求" /> <Button android:id="@+id/btnPostRequest" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="HttpClient的POST方法请求" /> <Button android:id="@+id/btnHttpURLGetRequest" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="HttpURLcon的GET方法请求" /> <Button android:id="@+id/btnHttpURLPostRequest" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="HttpURLcon的POST方法请求" /> </LinearLayout> <ScrollView android:layout_width="match_parent" android:layout_height="match_parent" > <TextView android:id="@+id/tvResponse" android:layout_width="match_parent" android:layout_height="match_parent" /> </ScrollView></LinearLayout><?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.twentyfivecode" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="21" /> <uses-permission android:name="android.permission.INTERNET"/> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application></manifest> 0 0
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