无法从Android中远程服务器下载的

无法从Android中远程服务器下载的

本文介绍了无法从Android中远程服务器下载的.apk文件的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我想从我的Web服务器上下载 .apk文件文件,但我越来越
java.io.FileNotFoundException:HTTP: //xxx/mygames/myapks/demo.apk 所有的时间。

不过,该文件是present本网​​址下面是我的code,我在做什么。

 进口的java.io.File;
进口java.io.FileOutputStream中;
进口的java.io.InputStream;
进口java.net.HttpURLConnection中;
进口的java.net.URL;

进口android.content.Context;
进口android.content.Intent;
进口android.net.Uri;
进口android.os.AsyncTask;
进口android.os.Environment;
进口android.util.Log;

公共类InstallAPK扩展的AsyncTask<字符串,太虚,太虚> {

    私人上下文的背景下;
    公共无效setContext(上下文contextf){
        上下文= contextf;
    }

    @覆盖
    保护无效doInBackground(字符串...为arg0){
        尝试 {
            网址URL =新的URL(将arg0 [0]);
            HttpURLConnection的C =(HttpURLConnection类)url.openConnection();
            c.setRequestMethod(GET);
            c.setDoOutput(真正的);
            c.connect();

            文件SD卡= Environment.getExternalStorageDirectory();
            文件MYDIR =新的文件(SD卡,安卓/数据/ com.sush19.app / TEMP);
            myDir.mkdirs();
            文件OUTPUTFILE =新的文件(MYDIRtemp.apk);
            如果(outputFile.exists()){
                outputFile.delete();
            }
            FileOutputStream中FOS =新的FileOutputStream(OUTPUTFILE);

            InputStream的是= c.getInputStream();

            byte []的缓冲区=新的字节[1024];
            INT LEN1 = 0;
            而((LEN1 = is.​​read(缓冲液))!=  -  1){
                fos.write(缓冲液,0,LEN1);
            }
            fos.flush();
            fos.close();
            is.close();

            意向意图=新的意图(Intent.ACTION_VIEW);
            intent.setDataAndType(Uri.fromFile(新文件(SD卡,安卓/数据/ com.sush19.app /温度/ temp.apk)),应用程序/ vnd.android.package存档);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); //如果没有这个标志的android返回意图的错误!
            context.startActivity(意向);


        }赶上(例外五){
            Log.e(UpdateAPP+ e.getMessage()Update错误!);
        }
        返回null;
    }
}
 

在按钮单击我打电话如下

  InstallAPK downloadAndInstall =新InstallAPK();
downloadAndInstall.setContext(getApplicationContext());
downloadAndInstall.execute(HTTP://xxx/mygames/myapks/demo.apk);
 

我试着用文本文件为好,对于我刚上传demo.txt文件的http://xxx/mygames/myapks/demo.txt 我获得同样的异常,但是当我浏览这个demo.txt文件的URL在浏览器中打开。我需要做的,从Web服务器下载的.apk文件。

我还包含所有必需的权限

 <使用-权限的Andr​​oid:名称=android.permission.WRITE_EXTERNAL_STORAG​​E/>
<使用-权限的Andr​​oid:名称=android.permission.READ_EXTERNAL_STORAG​​E/>
<使用-权限的Andr​​oid:名称=android.permission.INTERNET对/>
<使用-权限的Andr​​oid:名称=android.permission.ACCESS_NETWORK_STATE/>
 

我收到上述例外的:

 的InputStream是= c.getInputStream();
 

解决方案

这是不是你的code故障。这是服务器故障。只是尝试从浏览器中点击URL地址。

I want to download .apk file from my web server, but I'm getting
java.io.FileNotFoundException: http://xxx/mygames/myapks/demo.apk all the time.

But the file is present in this URLBelow is my code, What I'm doing.

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Environment;
import android.util.Log;

public class InstallAPK extends AsyncTask<String,Void,Void> {

    private Context context;
    public void setContext(Context contextf){
        context = contextf;
    }

    @Override
    protected Void doInBackground(String... arg0) {
        try {
            URL url = new URL(arg0[0]);
            HttpURLConnection c = (HttpURLConnection) url.openConnection();
            c.setRequestMethod("GET");
            c.setDoOutput(true);
            c.connect();

            File sdcard = Environment.getExternalStorageDirectory();
            File myDir = new File(sdcard,"Android/data/com.sush19.app/temp");
            myDir.mkdirs();
            File outputFile = new File(myDir, "temp.apk");
            if(outputFile.exists()){
                outputFile.delete();
            }
            FileOutputStream fos = new FileOutputStream(outputFile);

            InputStream is = c.getInputStream();

            byte[] buffer = new byte[1024];
            int len1 = 0;
            while ((len1 = is.read(buffer)) != -1) {
                fos.write(buffer, 0, len1);
            }
            fos.flush();
            fos.close();
            is.close();

            Intent intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(Uri.fromFile(new File(sdcard,"Android/data/com.sush19.app/temp/temp.apk")), "application/vnd.android.package-archive");
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); // without this flag android returned a intent error!
            context.startActivity(intent);


        } catch (Exception e) {
            Log.e("UpdateAPP", "Update error! " + e.getMessage());
        }
        return null;
    }
}

On button Click I'm calling as follow

InstallAPK downloadAndInstall = new InstallAPK();
downloadAndInstall.setContext(getApplicationContext());
downloadAndInstall.execute("http://xxx/mygames/myapks/demo.apk");

I tried with text file as well, for that I just uploaded demo.txt file to http://xxx/mygames/myapks/demo.txt I'm getting same Exception, but when I browse this demo.txt file URL it opens in the Browser. What I need to do to download .apk file from the Web server.

I've also Included all the required permissions

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

I'm getting the above Exception at:

InputStream is = c.getInputStream();
解决方案

It is not your code fault.It is server fault. just try to hit URL address from Browser.

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09-03 11:54