Java tutorial
/* * Copyright (c) 2005-2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. * * WSO2 Inc. licenses this file to you under the Apache License, * Version 2.0 (the "License"); you may not use this file except * in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package org.wso2.carbon.appmgt.sample.deployer.http; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPut; import org.wso2.carbon.appmgt.impl.utils.AppManagerUtil; import javax.net.ssl.HostnameVerifier; import javax.net.ssl.HttpsURLConnection; import javax.net.ssl.SSLSession; import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; /** * This class is use as a http client */ public class HttpHandler { static { HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() { public boolean verify(String hostname, SSLSession session) { if (hostname.equals("localhost")) return true; return false; } }); } /** * This method is use get a html file for given url * * @param url Web page url * @return response * @throws java.io.IOException Throws this when failed to retrieve web page */ public static String getHtml(String url) throws IOException { HttpClient httpClient = AppManagerUtil.getHttpClient(url); HttpGet httpget = new HttpGet(url); HttpResponse response = httpClient.execute(httpget); HttpEntity entity = response.getEntity(); InputStream content = entity.getContent(); BufferedReader in = new BufferedReader(new InputStreamReader(content)); StringBuffer responseBuffer = new StringBuffer(); String line; while ((line = in.readLine()) != null) { responseBuffer.append(line); } if (in != null) { in.close(); } return responseBuffer.toString(); } /** * This method is used to do a https post request * * @param url request url * @param payload Content of the post request * @param sessionId sessionId for authentication * @param contentType content type of the post request * @return response * @throws java.io.IOException - Throws this when failed to fulfill a https post request */ public String doPostHttps(String url, String payload, String sessionId, String contentType) throws IOException { URL obj = new URL(url); HttpsURLConnection con = (HttpsURLConnection) obj.openConnection(); //add reuqest header con.setRequestMethod("POST"); if (!sessionId.equals("")) { con.setRequestProperty("Cookie", "JSESSIONID=" + sessionId); } if (!contentType.equals("")) { con.setRequestProperty("Content-Type", contentType); } con.setRequestProperty("Accept-Language", "en-US,en;q=0.5"); con.setDoOutput(true); DataOutputStream wr = new DataOutputStream(con.getOutputStream()); wr.writeBytes(payload); wr.flush(); wr.close(); int responseCode = con.getResponseCode(); if (responseCode == 200) { BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream())); String inputLine; StringBuffer response = new StringBuffer(); while ((inputLine = in.readLine()) != null) { response.append(inputLine); } in.close(); if (sessionId.equals("")) { String session_id = response.substring((response.lastIndexOf(":") + 3), (response.lastIndexOf("}") - 2)); return session_id; } else if (sessionId.equals("header")) { return con.getHeaderField("Set-Cookie"); } return response.toString(); } return null; } /** * This method is used to do a http post request * * @param url request url * @param payload Content of the post request * @param sessionId sessionId for authentication * @param contentType content type of the post request * @return response * @throws java.io.IOException - Throws this when failed to fulfill a http post request */ public String doPostHttp(String url, String payload, String sessionId, String contentType) throws IOException { URL obj = new URL(url); HttpURLConnection con = (HttpURLConnection) obj.openConnection(); //add reuqest header con.setRequestMethod("POST"); //con.setRequestProperty("User-Agent", USER_AGENT); if (!sessionId.equals("") && !sessionId.equals("none")) { con.setRequestProperty("Cookie", "JSESSIONID=" + sessionId); } con.setRequestProperty("Content-Type", contentType); con.setDoOutput(true); DataOutputStream wr = new DataOutputStream(con.getOutputStream()); wr.writeBytes(payload); wr.flush(); wr.close(); int responseCode = con.getResponseCode(); if (responseCode == 200) { BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream())); String inputLine; StringBuffer response = new StringBuffer(); while ((inputLine = in.readLine()) != null) { response.append(inputLine); } in.close(); if (sessionId.equals("")) { String session_id = response.substring((response.lastIndexOf(":") + 3), (response.lastIndexOf("}") - 2)); return session_id; } else if (sessionId.equals("appmSamlSsoTokenId")) { return con.getHeaderField("Set-Cookie").split(";")[0].split("=")[1]; } else if (sessionId.equals("header")) { return con.getHeaderField("Set-Cookie").split("=")[1].split(";")[0]; } else { return response.toString(); } } return null; } /** * This method is used to do a http put request * * @param url request url * @param sessionId sessionId for authentication * @return response * @throws java.io.IOException - Throws this when failed to fulfill a http put request */ public String doPut(String url, String sessionId) throws IOException { HttpClient httpClient = AppManagerUtil.getHttpClient(url); StringBuilder result = new StringBuilder(); HttpPut putRequest = new HttpPut(url); putRequest.addHeader("Content-Type", "application/x-www-form-urlencoded"); putRequest.addHeader("Accept-Language", "en-US,en;q=0.5"); putRequest.addHeader("Cookie", "JSESSIONID=" + sessionId); putRequest.addHeader("Accept-Encoding", "gzip, deflate"); HttpResponse response = httpClient.execute(putRequest); if (response.getStatusLine().getStatusCode() != 200) { throw new RuntimeException("Failed : HTTP error code : " + response.getStatusLine().getStatusCode()); } BufferedReader br = new BufferedReader(new InputStreamReader((response.getEntity().getContent()))); String output; while ((output = br.readLine()) != null) { result.append(output); } if (br != null) { br.close(); } return result.toString(); } /** * This method is used to do a http get request * * @param url request url * @param trackingCode tracking code of the web application * @param appmSamlSsoTokenId appmSamlSsoTokenId id of the web application * @param refer web page url * @return response * @throws java.io.IOException Throws this when failed to fulfill a http get request */ public String doGet(String url, String trackingCode, String appmSamlSsoTokenId, String refer) throws IOException { URL obj = new URL(url); HttpURLConnection con = (HttpURLConnection) obj.openConnection(); con.setRequestMethod("GET"); //add request header if (trackingCode.equals("")) { con.setRequestProperty("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8"); con.setRequestProperty("Accept-Encoding", "gzip, deflate, sdch"); con.setRequestProperty("Accept-Language", "en-US,en;q=0.8"); con.setRequestProperty("Cookie", "JSESSIONID=" + appmSamlSsoTokenId); } else { con.setRequestProperty("Cookie", "appmSamlSsoTokenId=" + appmSamlSsoTokenId); con.setRequestProperty("trackingCode", trackingCode); con.setRequestProperty("Referer", refer); } BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream())); String inputLine; StringBuffer response = new StringBuffer(); while ((inputLine = in.readLine()) != null) { response.append(inputLine); } in.close(); return response.toString(); } }