错误消息‘ java.net. SocketException: socket 未能执行: EACCES (拒绝权限)’

我收到了错误消息

套接字失败: EACCES (拒绝权限)

当我尝试应用下面的代码。这是我调用的函数，并给我这个异常。

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();
}

LogCat :

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

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>

我怎样才能解决这个问题？

240377 次浏览
小开

试试,

<uses-permission android:name="android.permission.INTERNET"/>

而不是,

<permission  android:name="android.permission.INTERNET"></permission>
小开

试试这个:

<uses-permission android:name="android.permission.INTERNET"/>

你的 activity names和 capital letters必须是这样的:

<activity android:name=".Addfriend"/>
<activity android:name=".UpdateDetails"/>
<activity android:name=".Details"/>
<activity android:name=".Updateimage"/>
小开

将这些源代码添加到 Java 文件中，如下所示:

StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder().detectDiskReads().detectDiskWrites().detectNetwork().penaltyLog().build());
小开

尝试将 <uses-permission>移出 <application>标记。

小开

试试看。

<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" />
小开

您可能需要执行 AndroidStudio-Build-Clean

如果您通过文件系统或 Git 更新了清单，那么它不会接收更改。

小开

卸载设备上的应用程序 ，然后重新安装为我修复了它。

尝试了所有其他选项，没有。最后发现 这篇文章。这是在添加权限(下面)和清理构建。

<uses-permission android:name="android.permission.INTERNET"/>
小开

它可以通过在 android 清单文件中放置行来修复:

<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" />

在此输入图像描述

小开

如果你使用模拟器进行测试，那么你必须只使用 <uses-permission android:name="android.permission.INTERNET" />only 而忽略 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />.it 是我的工作。

小开

允许在清单文件中使用 Internet 权限


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