public static final int writeStreamToFile(InputStream in, File file, long maxSize)
throws IOException {
int countByte = 0;
if (file.getParentFile() != null && !file.getParentFile().exists()) {
file.getParentFile().mkdirs();
}
if (!file.exists()) {
file.createNewFile();
}
OutputStream out = null;
try {
out = new FileOutputStream(file);
countByte = writeStreamToStream(in, out, maxSize);
if (countByte < 0) {
ResourceHelper.closeResource(out);
file.delete();
return -1;
}
} finally {
ResourceHelper.closeResource(out);
}
return countByte;
}
public static final File writeFileItemToFolder(
FileItem fileItem, File folder, boolean overwrite, boolean rename) throws IOException {
if (!folder.isDirectory()) {
return null;
}
File file =
new File(
URLHelper.mergePath(
folder.getAbsolutePath(),
StringHelper.createFileName(StringHelper.getFileNameFromPath(fileItem.getName()))));
if (!file.exists()) {
file.createNewFile();
} else {
if (!overwrite && !rename) {
throw new FileExistsException("File already exists.");
}
if (rename) {
file = ResourceHelper.getFreeFileName(file);
}
}
InputStream in = null;
try {
in = fileItem.getInputStream();
writeStreamToFile(in, file);
return file;
} catch (IOException e) {
ResourceHelper.closeResource(in);
file.delete();
throw e;
} finally {
ResourceHelper.closeResource(in);
}
}
public static final void appendStringToFile(File file, String line) throws IOException {
Writer in = new FileWriter(file, true);
BufferedWriter writer = new BufferedWriter(in);
writer.write(line);
writer.newLine();
closeResource(writer);
}
public static Serializable loadBeanFromXML(File file) throws FileNotFoundException {
InputStream in = new FileInputStream(file);
try {
return loadBeanFromXML(in);
} finally {
closeResource(in);
}
}
public static final int writeFileToStream(File fileIn, OutputStream out) throws IOException {
InputStream in = null;
try {
in = new FileInputStream(fileIn);
return writeStreamToStream(in, out);
} finally {
ResourceHelper.closeResource(in);
}
}
public static Properties loadProperties(File file) throws IOException {
Properties properties = new Properties();
InputStream in = new FileInputStream(file);
try {
properties.load(in);
} finally {
ResourceHelper.closeResource(in);
}
return properties;
}
public static String downloadResourceAsString(URL workURL) throws IOException {
InputStream in = workURL.openStream();
ByteArrayOutputStream out = new ByteArrayOutputStream();
try {
byte[] buffer = new byte[8192];
int len, b = in.read();
while (b >= 0) {
out.write(b);
len = in.read(buffer);
out.write(buffer, 0, len);
b = in.read();
}
return new String(out.toByteArray());
} finally {
ResourceHelper.closeResource(in);
ResourceHelper.closeResource(out);
}
}
public static final void storeCollectionToFile(File file, List<String> lines) throws IOException {
if (!file.exists()) {
file.getParentFile().mkdirs();
file.createNewFile();
}
Writer in = new FileWriter(file);
BufferedWriter writer = new BufferedWriter(in);
for (String line : lines) {
writer.write(line);
writer.newLine();
}
closeResource(writer);
}
public static String storeBean(Serializable bean, File file) throws FileNotFoundException {
OutputStream out = new FileOutputStream(file);
XMLEncoder encoder = null;
try {
encoder = new XMLEncoder(out, ContentContext.CHARACTER_ENCODING, true, 0);
encoder.writeObject(bean);
encoder.flush();
} finally {
closeResource(out);
if (encoder != null) {
encoder.close();
}
}
return null;
}
public static final List<String> loadCollectionFromFile(File file) throws IOException {
if (!file.exists()) {
return Collections.EMPTY_LIST;
}
List<String> outLines = new LinkedList<String>();
Reader in = new FileReader(file);
BufferedReader reader = new BufferedReader(in);
String line = reader.readLine();
while (line != null) {
outLines.add(line);
line = reader.readLine();
}
closeResource(reader);
return outLines;
}
public static final String loadStringFromStream(InputStream in, Charset encoding)
throws IOException {
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
PrintStream out = new PrintStream(outStream);
BufferedReader reader = new BufferedReader(new InputStreamReader(in, encoding));
try {
String line = reader.readLine();
while (line != null) {
out.println(line);
line = reader.readLine();
}
} finally {
ResourceHelper.closeResource(reader);
}
out.close();
return new String(outStream.toByteArray());
}
public static final String loadStringFromFile(File file) throws IOException {
InputStream in = new FileInputStream(file);
String content = loadStringFromStream(in, ContentContext.CHARSET_DEFAULT);
closeResource(in);
return content;
}
public static String excutePost(
String targetURL,
String urlParameters,
String contentType,
String lang,
String user,
String pwd) {
URL url;
HttpURLConnection connection = null;
BufferedReader rd = null;
PrintWriter writer = null;
if (urlParameters == null) {
urlParameters = "";
}
Map<String, String> params = URLHelper.getParams(urlParameters);
StringBuffer encodedParam = new StringBuffer();
String sep = "";
for (Map.Entry<String, String> param : params.entrySet()) {
encodedParam.append(sep);
encodedParam.append(param.getKey());
encodedParam.append("=");
encodedParam.append(URLEncoder.encode(param.getValue()));
sep = "&";
}
if (urlParameters == null) {
urlParameters = "";
}
try {
// Create connection
url = new URL(targetURL);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("Content-Type", contentType);
connection.setRequestProperty("Content-Language", lang);
connection.setDoOutput(true);
// user authentification
if (user != null && pwd != null) {
connection.setRequestProperty(
"Authorization", "Basic " + Base64.encodeBase64((user + ':' + pwd).getBytes()));
}
// Send request
writer = new PrintWriter(connection.getOutputStream());
writer.write(encodedParam.toString());
writer.flush();
// Get Response
InputStream is = connection.getInputStream();
String line;
rd = new BufferedReader(new InputStreamReader(is));
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
PrintStream out = new PrintStream(outStream);
while ((line = rd.readLine()) != null) {
out.println(line);
}
out.close();
return new String(outStream.toByteArray());
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
closeResource(rd, writer);
if (connection != null) {
connection.disconnect();
}
}
}