Java Utililty Methods URL Connection

List of utility methods to do URL Connection

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Description

The list of methods to do URL Connection are organized into topic(s).

Method

StringdoGet(String url, String charset)
doGet 
URL reqUrl = null;
URLConnection conn = null;
BufferedReader in = null;
StringBuffer result = new StringBuffer();
try {
    reqUrl = new URL(url);
    conn = reqUrl.openConnection();
    conn.setConnectTimeout(10000);
...
InputStreamdoPost(final URL url, final Map parameters, final boolean encode)
do Post 
final URLConnection urlConn = url.openConnection();
urlConn.setDoInput(true);
urlConn.setDoOutput(true);
urlConn.setUseCaches(false);
urlConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); 
OutputStream os = null;
try {
    os = new DataOutputStream(urlConn.getOutputStream());
...
StringdoPost(String url, String params, String charset)
doPost 
URL reqUrl = null;
URLConnection conn = null;
OutputStreamWriter out = null;
BufferedWriter bw = null;
OutputStream os = null;
BufferedReader in = null;
StringBuffer result = new StringBuffer();
try {
...
List>findClasses(URL resource, String packageName, boolean annotated)
Recursive method used to find all classes in a given directory and subdirs. 
List<Class<?>> classes = new ArrayList<Class<?>>();
File directory = new File(resource.getFile());
if (directory.exists()) {
    findClassInDir(directory, packageName, classes, annotated);
} else {
    JarURLConnection conn = (JarURLConnection) resource.openConnection();
    JarFile jarFile = conn.getJarFile();
    Enumeration<JarEntry> e = jarFile.entries();
...
SetfindClasspathUrls(ClassLoader classLoader)
find Classpath Urls 
Set<URL> urls = new HashSet<URL>();
try {
    String[] classpathProperties = System.getProperty("java.class.path").split(File.pathSeparator);
    for (String classpathProperty : classpathProperties) {
        urls.add(new File(classpathProperty).toURI().toURL());
    urls.addAll(getExtURLs(getExtDirs()));
} catch (IOException e) {
...
voidfindResourceInJarPackage(URL url, String packageName, String packageDirName, boolean recursive, List resources)
find Resource In Jar Package 
JarFile jar = ((JarURLConnection) url.openConnection()).getJarFile();
Enumeration<JarEntry> entries = jar.entries();
while (entries.hasMoreElements()) {
    JarEntry entry = entries.nextElement();
    String name = entry.getName();
    if (name.charAt(0) == '/')
        name = name.substring(1);
    if (name.startsWith(packageDirName)) {
...
InputStreamgetAsStream(URL url)
get As Stream 
URLConnection conn = url.openConnection();
conn.setDoInput(true);
conn.setDoOutput(false);
return conn.getInputStream();
InputStreamgetBaseAuthInputStreamFromURL(String query, String basicAuthString)
get Base Auth Input Stream From URL 
URL url = new URL(query);
URLConnection uc = url.openConnection();
uc.setRequestProperty("Authorization", basicAuthString);
return uc.getInputStream();
StringgetBaseURL(URLConnection conn)
get the base URL from a connection 
String url = conn.getURL().toExternalForm();
return getBaseURL(url);
booleangetBooleanFromUrl(String url)
get Boolean From Url 
URL website = new URL(url);
URLConnection connection = website.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
StringBuilder response = new StringBuilder();
String inputLine;
while ((inputLine = in.readLine()) != null) {
    response.append(inputLine);
in.close();
if (response.toString().equals("true")) {
    return true;
} else {
    return false;