android基于socket的局域网内服务器与客户端加密通信

文章插图
实现了基本的socket通信(即两台设备，一台用作服务器，一台用作客户端) ，服务器进行监听，客户端发送加密数据到服务器，服务器进行解密得到明文。
注意：本项目中使用了ButterKnife及EventBus作为辅助工具，通信建立时默认网络正常(未做局域网网络环境检测) ，加密方式为AES加密
1.效果图：
(1)客户端

文章插图

(2)服务器端

文章插图

2.界面布局部分
(1)服务器端布局 function_socket_server.xml
?

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout style="@style/ToolBar">
<TextView
style="@style/ToolBar_tv_Title"
android:text="网络加密-服务器端" />
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:id="@+id/btn_startListener"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="启动监听" />
<Button
android:id="@+id/btn_stopListener"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="停止监听" />
<Button
android:id="@+id/btn_getUser"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="刷新用户" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="本机地址：" />
<TextView
android:id="@+id/tv_localAddress"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:singleLine="true" />
</LinearLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="接收到的明文:"
android:textColor="@color/black" />
<TextView
android:id="@+id/tv_receivedContent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="10dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="解密后的明文:"
android:textColor="@color/black" />
<TextView
android:id="@+id/tv_decryptContent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="10dp" />
</LinearLayout>
</ScrollView>
</LinearLayout>
(2)客户端布局 function_socket_client.xml
?

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout style="@style/ToolBar">
<TextView
style="@style/ToolBar_tv_Title"
android:text="网络加密-客户端" />
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="服务器地址：" />
<EditText
android:id="@+id/edtTxt_serverAddress"
android:layout_width="match_parent"
android:text="192.168.43.1"
android:layout_height="wrap_content"
android:singleLine="true" />
</LinearLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="文本内容:"
android:textColor="@color/black" />
<EditText
android:id="@+id/edtTxt_Content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/main_background"
android:padding="10dp"
android:text="123木头人" />
</LinearLayout>
</ScrollView>
<Button
android:id="@+id/btn_encryptAndSend"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:text="加密并发送" />
</LinearLayout>
(3)用到的style
?

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22

<style name="ToolBar_iv_Right">
<item name="android:layout_width">@dimen/toolbar_icon_dimen</item>
<item name="android:layout_height">@dimen/toolbar_icon_dimen</item>
<item name="android:layout_alignParentRight">true</item>
<item name="android:layout_gravity">end</item>
<item name="android:clickable">true</item>
<item name="android:background">?android:actionBarItemBackground</item>
<item name="android:padding">15dp</item>
</style>

<style name="ToolBar_tv_Title">
<item name="android:layout_width">wrap_content</item>
<item name="android:layout_height">wrap_content</item>
<item name="android:layout_centerVertical">true</item>
<item name="android:layout_marginLeft">@dimen/toolbar_title_haveBack_marginStart</item>
<item name="android:layout_marginRight">@dimen/toolbar_title_haveBack_marginEnd</item>
<item name="android:gravity">center</item>
<item name="android:singleLine">true</item>
<item name="android:textColor">@color/white</item>
<item name="android:textSize">20sp</item>
</style>
3.功能代码
(1)基类 BaseEventActivity.Java
?

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import org.greenrobot.eventbus.EventBus;
import butterknife.ButterKnife;
public abstract class BaseEventActivity extends AppCompatActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getIntentData();
setContentView(getLayoutResId());
ButterKnife.bind(this);
EventBus.getDefault().register(this);
init();
}
protected void getIntentData() {
}
@Override
protected void onDestroy() {
super.onDestroy();
EventBus.getDefault().unregister(this);
}
protected abstract void init();
protected abstract int getLayoutResId();
}
(2)服务器主界面 Function_Socket.java
?

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.view.View;
import android.widget.TextView;
import org.greenrobot.eventbus.Subscribe;
import org.greenrobot.eventbus.ThreadMode;
import java.io.BufferedReader;
import java.io.FileReader;
import java.util.ArrayList;
import butterknife.BindView;
import butterknife.OnClick;
/**
* 服务器界面
*/
public class Function_Socket_Server extends BaseEventActivity {
@BindView(R.id.tv_localAddress)
TextView tv_localAddress;
@BindView(R.id.tv_receivedContent)
TextView tv_receivedContent;
@BindView(R.id.tv_decryptContent)
TextView tv_decryptContent;
private LocalService localService;//用于启动监听的服务
private ServiceConnection sc;//服务连接
@Override
protected void init() {
tv_localAddress.setText(ToolUtil.getHostIP());
sc = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
LocalService.LocalBinder localBinder = (LocalService.LocalBinder) service;
localService = localBinder.getService();
localService.startWaitDataThread();
ToastUtil.showToast(Function_Socket_Server.this, "监听已启动");
}
@Override
public void onServiceDisconnected(ComponentName name) {
}
};
connection();
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void getData(String data) {
tv_receivedContent.setText(data);
tv_decryptContent.setText(AESUtil.decrypt(ConstantUtil.password, data));
}
/**
* 绑定service
*/
private void connection() {
Intent intent = new Intent(this, LocalService.class);
bindService(intent, sc, BIND_AUTO_CREATE);
}
@Override
protected int getLayoutResId() {
return R.layout.function_socket_server;
}
/**
* 获取连接到本机热点上的手机ip
*/
private ArrayList<String> getConnectedIP() {
ArrayList<String> connectedIP = new ArrayList<>();
try {
//通过读取配置文件实现
BufferedReader br = new BufferedReader(new FileReader(
"/proc/net/arp"));
String line;
while ((line = br.readLine()) != null) {
String[] splitted = line.split(" +");
if (splitted.length >= 4) {
String ip = splitted[0];
connectedIP.add(ip);
}
}
} catch (Exception e) {
e.printStackTrace();
}
return connectedIP;
}
@OnClick({R.id.btn_startListener, R.id.btn_stopListener, R.id.btn_getUser})
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_startListener://启动监听
connection();
break;
case R.id.btn_stopListener://停止监听
if (sc != null)
unbindService(sc);
break;
case R.id.btn_getUser://刷新连接到此设备的IP并清空之前接收到的数据
ArrayList<String> connectedIP = getConnectedIP();
StringBuilder resultList = new StringBuilder();
for (String ip : connectedIP) {
resultList.append(ip);
resultList.append("\n");
}
ToastUtil.showToast(this, "连接到手机上的Ip是：" + resultList.toString());
tv_decryptContent.setText("");
tv_receivedContent.setText("");
break;
}
}
public void onDestroy() {
super.onDestroy();
if (sc != null)
unbindService(sc);
}
【android基于socket的局域网内服务器与客户端加密通信】}