实验效果：
项目目录：
Java代码（放在Src文件下）
package com.bn.chap9.login;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.Header;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
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.BasicHeader;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class Sample9_1_Activity extends Activity {
EditText user;//用户名
EditText password;//密码
Button bOK;//确定按钮
Button bClear;//清空按钮
TextView tv;
DefaultHttpClient client;
HttpPost httpPost;
HttpResponse response;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
client=new DefaultHttpClient();
httpPost=new HttpPost("https://www.google.com/accounts/ClientLogin");
user=(EditText)this.findViewById(R.id.EditText01);
password=(EditText)this.findViewById(R.id.EditText02);
bOK=(Button)this.findViewById(R.id.Button01);
bClear=(Button)this.findViewById(R.id.Button02);
tv=(TextView)this.findViewById(R.id.TextView03);
bClear.setOnClickListener
(
new OnClickListener()
{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
user.setText("");
password.setText("");
}
}
);
bOK.setOnClickListener(
new OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String userName=user.getText().toString().trim();
System.out.println("用户姓名是："+userName);
String pwd=password.getText().toString().trim();
System.out.println("用户密码是："+pwd);
if(userName.length()==0)
{
Toast.makeText(
Sample9_1_Activity.this,
"请输入用户名！",
Toast.LENGTH_SHORT).show();
}else if(pwd.length()==0)
{
Toast.makeText(
Sample9_1_Activity.this,
"请输入密码！",
Toast.LENGTH_SHORT).show();
}
else
{
String result=getToken(userName,pwd);
System.out.println("返回结果是："+result);
if(result.length()!=0)
{
Toast.makeText(
Sample9_1_Activity.this,
"恭喜您，成功获取Token！",
Toast.LENGTH_SHORT).show();
tv.setText("获取的Token为："+result);
Header[] header=new BasicHeader[5];//创建Header对象
header[0]=new BasicHeader("Content-type","application/x-www-form-urlencoded");
header[1]=new BasicHeader("Authorzation","GoogleLogin auth=""+result+""");
header[2]=new BasicHeader("User-Agent","Java/1.5.0_06");
header[3]=new BasicHeader("Accept","text/html,image/gif,image/jpeg,*;q=2,*/*;q=.2");
header[4]=new BasicHeader("Connection","keep-alive");
//用于发送HttpGet请求
String url="http://www.google.com/ig?hl=zh-CN&refresh=1";//网页地址
HttpGet get=new HttpGet(url);
for(int i=0;i<header.length;i++)
{
get.addHeader(header[i]);
}
try {
response=client.execute(get);
InputStream tempIs=response.getEntity().getContent();
BufferedReader read=new BufferedReader(new InputStreamReader(tempIs));
StringBuffer sb=new StringBuffer();
String tempStr=null;
try
{
while((tempStr=read.readLine())!=null)
{
sb.append(tempStr);
}
}catch(Exception e)
{
e.printStackTrace();
}finally
{
try
{
tempIs.close();//关闭输入流
}catch(Exception e)
{
e.printStackTrace();
}
}
tempStr=sb.toString().trim();
System.out.println("tempStr的结果："+tempStr);
BufferedWriter bw=new BufferedWriter(new FileWriter("/sdcard/user.txt"));
bw.write(tempStr,0,tempStr.length());
bw.flush();
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}else
{
Toast.makeText(
Sample9_1_Activity.this,
"很遗憾，未能获取Token，请检查账号和密码是否正确！",
Toast.LENGTH_SHORT).show();
tv.setText("未能获取Token！");
}
}
}
}
);
}
public String getToken(String name,String pwd)
{
String result=null;
List<NameValuePair> list=new ArrayList<NameValuePair>();//创建NameValurPair字符串
list.add(new BasicNameValuePair("Email",name));//添加账号
list.add(new BasicNameValuePair("Passwd",pwd));//添加密码
list.add(new BasicNameValuePair("source","clientstr"));
list.add(new BasicNameValuePair("service","reader"));
try
{
httpPost.setEntity(
new UrlEncodedFormEntity(
list,
HTTP.DEFAULT_CONTENT_CHARSET));
response=client.execute(httpPost);
if(response.getStatusLine().getStatusCode()!=200)
{
return "";
}
InputStream is=response.getEntity().getContent();
result=getAuth(is);//获取信息
}catch(Exception e)
{
e.printStackTrace();
}
return result;
}
public String getAuth(InputStream is)
{//分离Token的方法
String result=null;
String line=null;
BufferedReader read=new BufferedReader(
new InputStreamReader(is));//创建BufferedReader对象
try
{
while((line=read.readLine())!=null)//读取信息
{
if(line.startsWith("Auth="))
{
result=line.substring(5);//截取字符串
}
}
}catch(Exception e)
{
e.printStackTrace();
}finally
{
try
{
is.close();//关闭输入流
}catch(Exception e)
{
e.printStackTrace();
}
}
return result;
}
}
布局文件
<?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"
android:background="#ffffcc">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Google用户登录系统"
android:textColor="#222222"
android:textSize="18dip"
/>
<LinearLayout
android:id="@+id/LinearLayout01"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#ffcc66">
<TextView
android:text="用户名："
android:id="@+id/TextView01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#222222"
android:textSize="18dip">
</TextView>
<EditText
android:text=""
android:id="@+id/EditText01"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="18dip">
</EditText>
</LinearLayout>
<LinearLayout
android:id="@+id/LinearLayout02"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#ffcc66">
<TextView
android:text="密 码："
android:id="@+id/TextView02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#222222"
android:textSize="18dip">
</TextView>
<EditText
android:text=""
android:id="@+id/EditText02"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="18dip"
android:password="true">
</EditText>
</LinearLayout>
<LinearLayout
android:id="@+id/LinearLayout02"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#ffcc66">
<Button
android:text="登录"
android:id="@+id/Button01"
android:layout_width="75dip"
android:layout_height="40dip"
android:textSize="18dip"
android:gravity="center">
</Button>
<Button
android:text="清空"
android:id="@+id/Button02"
android:layout_width="75dip"
android:layout_height="40dip"
android:textSize="18dip"
android:gravity="center">
</Button>
</LinearLayout>
<TextView
android:text=""
android:id="@+id/TextView03"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#222222"
android:textSize="18dip">
</TextView>
</LinearLayout>