Android 错误消息“java.net.SocketException：套接字失败：EACCES（权限被拒绝）”
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Error message 'java.net.SocketException: socket failed: EACCES (Permission denied)'
提问by Sniver
I get the error message
我收到错误消息
java.net.SocketException: socket failed: EACCES (Permission denied)
java.net.SocketException：套接字失败：EACCES（权限被拒绝）
when I try to apply the code below. This is the function I call and gives me this exception.
当我尝试应用下面的代码时。这是我调用的函数，并给了我这个例外。
public void run() {
// TODO Auto-generated method stub
URL myurl = null;
try {
myurl = new URL("http://10.0.2.2/list.JSON");
}
catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
URLConnection myconn = myurl.openConnection();
InputStream in = new BufferedInputStream(myconn.getInputStream());
InputStreamReader reader = new InputStreamReader(in);
BufferedReader br = new BufferedReader(reader);
String line;
StringBuilder sb = new StringBuilder();
while ((line=br.readLine()) != null)
{
sb.append(line);
//Toast.makeText(getApplicationContext(), "I enter here", Toast.LENGTH_LONG).show();
}
jsoncode = sb.toString();
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
threading = true;
super.run();
}
日志猫：
06-30 11:33:21.457: W/System.err(619): java.net.SocketException: socket failed: EACCES (Permission denied)
06-30 11:33:21.467: W/System.err(619): at libcore.io.IoBridge.socket(IoBridge.java:573)
06-30 11:33:21.467: W/System.err(619): at java.net.PlainSocketImpl.create(PlainSocketImpl.java:201)
06-30 11:33:21.479: W/System.err(619): at java.net.Socket.checkOpenAndCreate(Socket.java:663)
06-30 11:33:21.479: W/System.err(619): at java.net.Socket.connect(Socket.java:807)
06-30 11:33:21.479: W/System.err(619): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:77)
06-30 11:33:21.479: W/System.err(619): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50)
06-30 11:33:21.479: W/System.err(619): at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:351)
06-30 11:33:21.479: W/System.err(619): at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:86)
06-30 11:33:21.479: W/System.err(619): at libcore.net.http.HttpConnection.connect(HttpConnection.java:128)
06-30 11:33:21.487: W/System.err(619): at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:308)
06-30 11:33:21.487: W/System.err(619): at libcore.net.http.HttpEngine.connect(HttpEngine.java:303)
06-30 11:33:21.497: W/System.err(619): at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:282)
06-30 11:33:21.497: W/System.err(619): at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:232)
06-30 11:33:21.497: W/System.err(619): at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:273)
06-30 11:33:21.497: W/System.err(619): at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:168)
06-30 11:33:21.497: W/System.err(619): at com.apk.PItestActivity$connection.run(PItestActivity.java:190)
06-30 11:33:21.507: W/System.err(619): Caused by: libcore.io.ErrnoException: socket failed: EACCES (Permission denied)
06-30 11:33:21.517: W/System.err(619): at libcore.io.Posix.socket(Native Method)
06-30 11:33:21.517: W/System.err(619): at libcore.io.BlockGuardOs.socket(BlockGuardOs.java:169)
06-30 11:33:21.527: W/System.err(619): at libcore.io.IoBridge.socket(IoBridge.java:558)
06-30 11:33:21.527: W/System.err(619): ... 15 more
And this is my manifest file:
这是我的清单文件：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.apk"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="14" />
<permission android:name="android.permission.INTERNET"></permission>
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".PItestActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="addfriend"></activity>
<activity android:name="updateDetails"></activity>
<activity android:name="Details"></activity>
<activity android:name="updateimage"></activity>
</application>
</manifest>
How can I fix this problem?
我该如何解决这个问题？
回答by user370305
Try with,
试试看，
<uses-permission android:name="android.permission.INTERNET"/>
instead of,
代替，
<permission android:name="android.permission.INTERNET"></permission>
回答by NagarjunaReddy
Try this:
尝试这个：
<uses-permission android:name="android.permission.INTERNET"/>
And your activity namesmust be like this with capital letters:
你activity names必须是这样的capital letters：
<activity android:name=".Addfriend"/>
<activity android:name=".UpdateDetails"/>
<activity android:name=".Details"/>
<activity android:name=".Updateimage"/>
回答by Neeraj Singh
try it.
尝试一下。
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
回答by Irshu
Try moving <uses-permission>outside the <application>tag.
尝试移动<uses-permission>外<application>标签。
回答by Gibolt
Uninstalling the appon device and then reinstallingfixed it for me.
卸载设备上的应用程序，然后重新安装为我修复了它。
Tried all the other options, nothing. Finally found this post. This is after adding permission (below) and cleaning build.
尝试了所有其他选项，什么都没有。终于找到这个帖子了。这是在添加权限（如下）和清理构建之后。
<uses-permission android:name="android.permission.INTERNET"/>
回答by Nikimo Jam
It can be fixed by placing the lines in the android manifest file:
可以通过在 android 清单文件中放置以下行来修复它：
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
回答by Jerin Raj
If you are using an emulator for testing then you must use <uses-permission android:name="android.permission.INTERNET" />only and ignore <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />.It's work for me.
如果您使用模拟器进行测试，那么您必须<uses-permission android:name="android.permission.INTERNET" />只使用并忽略 。<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />它对我有用。
回答by David A
You may need to do AndroidStudio - Build - Clean
你可能需要做 AndroidStudio - Build - Clean
If you updated manifest through the filesystem or Git it won't pick up the changes.
如果您通过文件系统或 Git 更新清单，它不会获取更改。
回答by CoderDream
Add those source code to your Java file as below:
将这些源代码添加到您的 Java 文件中，如下所示：
StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder().detectDiskReads().detectDiskWrites().detectNetwork().penaltyLog().build());
