android之访问被保护的资源
2013-12-02 11:11
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package org.crazyit.net; import java.io.BufferedReader; import java.io.InputStreamReader; 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.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.protocol.HTTP; import org.apache.http.util.EntityUtils; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.os.Bundle; import android.os.Handler; import android.os.Looper; import android.os.Message; import android.view.View; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; public class HttpClientTest extends Activity { TextView response; HttpClient httpClient; Handler handler = new Handler() { public void handleMessage(Message msg) { if(msg.what == 0x123) { // 使用response文本框显示服务器响应 response.append(msg.obj.toString() + "\n"); } } }; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // 创建DefaultHttpClient对象 httpClient = new DefaultHttpClient(); response = (TextView) findViewById(R.id.response); } public void accessSecret(View v) { response.setText(""); new Thread() { @Override public void run() { // 创建一个HttpGet对象 HttpGet get = new HttpGet( "https://mail.qq.com/cgi-bin/loginpage"); //① try { // 发送GET请求 HttpResponse httpResponse = httpClient.execute(get);//② HttpEntity entity = httpResponse.getEntity(); if (entity != null) { // 读取服务器响应 BufferedReader br = new BufferedReader( new InputStreamReader(entity.getContent())); String line = null; while ((line = br.readLine()) != null) { Message msg = new Message(); msg.what = 0x123; msg.obj = line; handler.sendMessage(msg); } } } catch (Exception e) { e.printStackTrace(); } } }.start(); } public void showLogin(View v) { // 加载登录界面 final View loginDialog = getLayoutInflater().inflate( R.layout.login, null); // 使用对话框供用户登录系统 new AlertDialog.Builder(HttpClientTest.this) .setTitle("登录系统") .setView(loginDialog) .setPositiveButton("登录", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // 获取用户输入的用户名、密码 final String name = ((EditText) loginDialog .findViewById(R.id.name)).getText() .toString(); final String pass = ((EditText) loginDialog .findViewById(R.id.pass)).getText() .toString(); new Thread() { @Override public void run() { try { HttpPost post = new HttpPost("https://mail.qq.com/cgi-bin/loginpage");//③ // 如果传递参数个数比较多的话可以对传递的参数进行封装 List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair ("name", name)); params.add(new BasicNameValuePair ("pass", pass)); // 设置请求参数 post.setEntity(new UrlEncodedFormEntity( params, HTTP.UTF_8)); // 发送POST请求 HttpResponse response = httpClient .execute(post); //④ // 如果服务器成功地返回响应 if (response.getStatusLine() .getStatusCode() == 200) { String msg = EntityUtils .toString(response.getEntity()); Looper.prepare(); // 提示登录成功 Toast.makeText(HttpClientTest.this, msg, Toast.LENGTH_SHORT).show(); Looper.loop(); } } catch (Exception e) { e.printStackTrace(); } } }.start(); } }).setNegativeButton("取消", null).show(); } }
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content" android:gravity="center_horizontal" > <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/get" android:onClick="accessSecret" /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/login" android:onClick="showLogin" /> </LinearLayout> <TextView android:id="@+id/response" android:layout_width="fill_parent" android:layout_height="fill_parent" android:gravity="top" android:background="#ffff" android:textColor="#f000" android:textSize="16dp" /> </LinearLayout>
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/name" /> <EditText android:id="@+id/name" android:layout_width="fill_parent" android:layout_height="wrap_content" /> </LinearLayout> <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/pass" /> <EditText android:id="@+id/pass" android:layout_width="fill_parent" android:layout_height="wrap_content" /> </LinearLayout> </LinearLayout>
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