我正在向服务器发送帖子请求。请求成功后，响应会将pdf数据发送到客户端以供下载。我正在尝试使用响应生成pdf文件并将其保存到Android设备。我已经成功创建了请求，空的pdf文件，我甚至收到了成功的回复。虽然，当我调用.getInputStream（）时，它返回一个“ -1 ”。结果，while循环退出时出现错误 java.lang.ArrayIndexOutOfBoundsException：length = 4096; regionStart = 0; regionLength = -1 。
我理解为什么我收到此错误，但我不知道如何获得数据响应。
Options +FollowSymLinks
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
<Files .*>
Order Deny,Allow
Deny From All
</Files>
# Allow asset folders through
RewriteRule ^(fuel/modules/(.+)?/assets/(.+)) - [L]
# Protect application and system files from being viewed
RewriteRule ^(fuel/install/.+|fuel/crons/.+|fuel/data_backup/.+|fuel/codeigniter/.+|fuel/modules/.+|fuel/application/.+) - [F,L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .* index.php/$0 [L]
# Prevents access to dot files (.git, .htaccess) - security.
RewriteCond %{SCRIPT_FILENAME} -d
RewriteCond %{SCRIPT_FILENAME} -f
RewriteRule "(^|/)\." - [F]
</IfModule>
Options -Indexes
我收到了正确的回复标题。我在下面列出了它们......
protected Boolean doInBackground(String... params) {
Log.d("LOGOUT", "CREATING REQUEST");
boolean successful = false;
HttpURLConnection connection = null;
URL downloadURL = null;
InputStream inputStream = null;
PrintWriter out= null;
FileOutputStream fileOutputStream = null;
File file = null;
int totalsize;
try {
downloadURL = new URL("http://exampleurl.com");
connection = (HttpURLConnection) downloadURL.openConnection();
connection.setDoOutput(true);
String data = "param=" + URLEncoder.encode(params[0], "UTF-8") + "&submit=" + URLEncoder.encode("Submit", "UTF-8");
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestProperty("Content-Length", "" + data.length());
String sdCard = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).getAbsolutePath();
file = new File(sdCard + File.separator + "test.pdf");
fileOutputStream = new FileOutputStream(file);
out = new PrintWriter(connection.getOutputStream());
out.write(data);
out.close();
inputStream = connection.getInputStream();
int read;
byte[] buffer = new byte[1024];
while ((read = inputStream.read(buffer)) != -1) ; {
Log.d("LOGOUT", "BUFFER: " + read);
// **The LOGOUT message reads "BUFFER: -1" within Logcat**
fileOutputStream.write(buffer, 0, read);
}
successful = true;
} catch (MalformedURLException e) {
Log.d("LOGOUT", "ERROR: " + e);
} catch (UnsupportedEncodingException e) {
Log.d("LOGOUT", "ERROR: " + e);
} catch (FileNotFoundException e) {
Log.d("LOGOUT", "ERROR: " + e);
} catch (IOException e) {
Log.d("LOGOUT", "ERROR: " + e);
} finally {
if (inputStream != null) {
try {
Log.d("LOGOUT", "CLOSING INPUTSTREAM");
inputStream.close();
} catch (IOException e) {
Log.d("LOGOUT", "ERROR: " + e);
}
if (fileOutputStream != null) {
try {
fileOutputStream.close();
Log.d("LOGOUT", "CLOSING FILEOUTPUTSTREAM");
} catch (IOException e) {
Log.d("LOGOUT", "ERROR: " + e);
}
}
}
if (connection != null) {
Log.d("LOGOUT", "CLOSING CONNECTION");
connection.disconnect();
}
}
return successful;
}
我知道我发送/接收成功请求/回复的事实，但我无法下载pdf数据。最后，我无法控制服务器。我正在与第三方应用程序进行交互。
完成任务我做错了什么？如果不是这样，有没有人知道我可以在哪里解决问题？任何指导都表示赞赏。