java.io.FileNotFoundException：/storage/emulated/FileTest1.zip：open failed：EACCES（Permission denied）

Question

当我尝试从服务器下载zip文件时遇到问题。我使用intentservice下载文件但我得到了这个例外

java.io.FileNotFoundException: /storage/emulated/FileTest1.zip: open failed: EACCES (Permission denied)

我尝试将文件保存在内部存储上，而不是保存在SD卡上。 这是我的代码

@Override
protected void onHandleIntent(Intent intent) {
    String urlDir = intent.getExtras().getString(DOWNLOAD_SERVICE_URL);
    String fileName = intent.getExtras().getString(DOWNLOAD_SERVICE_FILE_NAME);
    String filePath = intent.getExtras().getString(DOWNLOAD_SERVICE_FILE_PATH);

    try{
        URL url = new URL(urlDir);
        URLConnection connection = url.openConnection();
        connection.connect();

        BufferedInputStream input = new BufferedInputStream(url.openStream());
        String tempName = filePath + fileName;
        FileOutputStream output = new FileOutputStream(tempName);

        byte data[] = new byte[1024];

        while (input.read(data) != -1) {
            output.write(data);
        }

        output.flush();
        output.close();
        input.close();

    } catch(Exception e){
        e.printStackTrace();
    }
}

我该如何解决？