Java Utililty Methods HTTP Response

List of utility methods to do HTTP Response

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HTTP Response

Description

The list of methods to do HTTP Response are organized into topic(s).

Method

long getResourceLastModified(URLConnection connection)
get Resource Last Modified

long modified;
if (connection instanceof JarURLConnection) {
 URL jarFileUrl = ((JarURLConnection) connection).getJarFileURL();
 URLConnection jarFileConnection = jarFileUrl.openConnection();
 try {
 modified = jarFileConnection.getLastModified();
 } finally {
 try {
...

long getResourceModifiedTime(URL url)
Retrieves the last modified time of a provided URL.

long lastModified = 0L;
try {
 if (url.getProtocol().equals(JAR_PROTOCOL)) {
 JarURLConnection jarConn = (JarURLConnection) url.openConnection();
 url = jarConn.getJarFileURL();
 if (url.getProtocol().equals(FILE_PROTOCOL)) {
 File file;
...

void getResponse(HttpURLConnection httpConn, StringBuilder responseContent, StringBuilder responseCode, HashMap headers)
Get the response content and headers as string

String s = getResponseContent(httpConn);
responseContent.setLength(0);
responseContent.append(s);
s = getResponseHeaders(httpConn, headers);
responseCode.setLength(0);
responseCode.append(s);
return;

String getResponse(URL request)
get Response

URLConnection yc = request.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(yc.getInputStream()));
StringBuilder sb = new StringBuilder();
String inputLine;
while ((inputLine = in.readLine()) != null) {
 sb.append(inputLine);
in.close();
...

String getResponse(URL url)
Returns the content of the response body for the given url

StringBuffer response = new StringBuffer();
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod(GET);
try (BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
 String sCurrentLine;
 while ((sCurrentLine = br.readLine()) != null) {
 response.append(sCurrentLine);
return response.toString();

String getResponseAsString(HttpURLConnection conn)
get Response As String

String charset = getResponseCharset(conn.getContentType());
InputStream es = conn.getErrorStream();
if (es == null) {
 return getStreamAsString(conn.getInputStream(), charset);
} else {
 String msg = getStreamAsString(es, charset);
 if (isEmpty(msg)) {
 throw new IOException(conn.getResponseCode() + ":" + conn.getResponseMessage());
...

String getResponseBody(HttpURLConnection conn)
get Response Body

BufferedReader br = null;
StringBuilder body = null;
String line = "";
try {
 br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
 body = new StringBuilder();
 while ((line = br.readLine()) != null)
 body.append(line);
...

String getResponseContent(HttpURLConnection connection)
get Response Content

InputStream is = connection.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
String line;
StringBuffer response = new StringBuffer();
try {
 while ((line = reader.readLine()) != null) {
 response.append(line);
 response.append('\n');
...

String getResponseContent(HttpURLConnection httpConn)
Get the response (or error response) as a string

try {
 if (httpConn.getInputStream() == null) {
 return null;
 } else {
 StringBuilder sb = new StringBuilder();
 BufferedReader in = new BufferedReader(new InputStreamReader(httpConn.getInputStream()));
 String str;
 while ((str = in.readLine()) != null) {
...

String getResponseContent(String url)
get Response Content

StringBuffer responseString = new StringBuffer();
URLConnection connection = new URL(url).openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String aux;
while ((aux = in.readLine()) != null) {
 responseString.append(aux);
in.close();
...