Java tutorial
/** * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF 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 zz.pseas.ghost.utils; /** * @date 2016914 ?9:26:00 * @version * @since JDK 1.8 */ import java.io.IOException; import java.net.SocketTimeoutException; import java.net.UnknownHostException; import java.util.Map; import org.apache.commons.httpclient.Cookie; import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler; import org.apache.commons.httpclient.Header; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.HttpException; import org.apache.commons.httpclient.HttpStatus; import org.apache.commons.httpclient.NameValuePair; import org.apache.commons.httpclient.cookie.CookiePolicy; import org.apache.commons.httpclient.methods.GetMethod; import org.apache.commons.httpclient.methods.PostMethod; import org.apache.commons.httpclient.params.HttpClientParams; import org.apache.commons.httpclient.params.HttpMethodParams; import org.apache.log4j.Logger; /** * Http * * @author GS */ public class HttpClinetUtil { private static Logger LOG = Logger.getLogger(HttpClinetUtil.class); private static final HttpClient hc; static { hc = new HttpClient(); hc.getParams().setCookiePolicy(CookiePolicy.BROWSER_COMPATIBILITY); HttpClientParams httparams = new HttpClientParams(); hc.setParams(httparams); hc.getParams().setParameter(HttpMethodParams.USER_AGENT, "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.57 Safari/537.36");// ? } /** * @author GS * @param url * @param para * get?? * @return * @throws IOException */ public static String get(String url, Map<String, String> para) throws IOException { String responseBody = null; GetMethod getMethod = new GetMethod(url); getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler()); // ???? NameValuePair[] data = new NameValuePair[para.size()]; int index = 0; for (String s : para.keySet()) { data[index++] = new NameValuePair(s, para.get(s)); // ?? } getMethod.setQueryString(data); // ? try { int statusCode = hc.executeMethod(getMethod); if (statusCode != HttpStatus.SC_OK) { LOG.error("Method failed: " + getMethod.getStatusLine()); } responseBody = getMethod.getResponseBodyAsString(); } catch (SocketTimeoutException e) { e.printStackTrace(); LOG.error("??" + e.getMessage()); } catch (UnknownHostException e) { e.printStackTrace(); LOG.error("?,UnknownHostException,?" + e.getMessage()); } catch (HttpException e) { // ? e.printStackTrace(); LOG.error("?" + e.getMessage()); } catch (IOException e) { // ? e.printStackTrace(); LOG.error("?" + e.getMessage()); } finally { getMethod.releaseConnection(); // } return responseBody; } /** * @author GS * @param url * @return * @throws IOException */ public static String get(String url) throws IOException { String responseBody = null; GetMethod getMethod = new GetMethod(url); getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler()); // ???? try { int statusCode = hc.executeMethod(getMethod); if (statusCode != HttpStatus.SC_OK) { LOG.error("Method failed: " + getMethod.getStatusLine()); } responseBody = getMethod.getResponseBodyAsString(); } catch (SocketTimeoutException e) { e.printStackTrace(); LOG.error("??" + e.getMessage()); } catch (UnknownHostException e) { e.printStackTrace(); LOG.error("??" + e.getMessage()); } catch (HttpException e) { // ? e.printStackTrace(); LOG.error("?" + e.getMessage()); } catch (IOException e) { // ? e.printStackTrace(); LOG.error("?" + e.getMessage()); } finally { getMethod.releaseConnection(); // } return responseBody; } /** * @author GS * @param url * @param para * Post?? * @return * @throws IOException */ public static String post(String url, Map<String, String> para) throws IOException { String responseBody = null; PostMethod postMethod = new PostMethod(url); NameValuePair[] data = new NameValuePair[para.size()]; int index = 0; for (String s : para.keySet()) { data[index++] = new NameValuePair(s, para.get(s)); } postMethod.setRequestBody(data); // ? try { int statusCode = hc.executeMethod(postMethod); if (statusCode != HttpStatus.SC_OK) { LOG.error("Method failed: " + postMethod.getStatusLine()); } responseBody = postMethod.getResponseBodyAsString(); } catch (UnknownHostException e) { e.printStackTrace(); LOG.error("??" + e.getMessage()); } catch (HttpException e) { e.printStackTrace(); LOG.error(e.getMessage()); } catch (IOException e) { e.printStackTrace(); LOG.error(e.getMessage()); } finally { postMethod.releaseConnection(); // } return responseBody; } /** * @author GS * @param url * @param para * @param cookie * @return * @throws IOException */ public static String get(String url, Map<String, String> para, String cookie) throws IOException { String responseBody = null; GetMethod getMethod = new GetMethod(url); getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler()); // ???? NameValuePair[] data = new NameValuePair[para.size()]; int index = 0; for (String s : para.keySet()) { data[index++] = new NameValuePair(s, para.get(s)); // ?? } getMethod.setQueryString(data); // ? if (!cookie.equals("")) { getMethod.setRequestHeader("cookie", cookie); } try { int statusCode = hc.executeMethod(getMethod); if (statusCode != HttpStatus.SC_OK) { LOG.error("Method failed: " + getMethod.getStatusLine()); } responseBody = getMethod.getResponseBodyAsString(); } catch (UnknownHostException e) { e.printStackTrace(); LOG.error("??" + e.getMessage()); } catch (HttpException e) { // ? e.printStackTrace(); LOG.error("?" + e.getMessage()); } catch (IOException e) { // ? e.printStackTrace(); LOG.error("?" + e.getMessage()); } finally { getMethod.releaseConnection(); // } return responseBody; } /** * @author GS * @param url * @param para * @param cookie * @return * @throws IOException */ public static String get(String url, String cookie) throws IOException { String responseBody = null; GetMethod getMethod = new GetMethod(url); getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler()); // ???? if (!cookie.equals("")) { getMethod.setRequestHeader("cookie", cookie); } try { int statusCode = hc.executeMethod(getMethod); if (statusCode != HttpStatus.SC_OK) { LOG.error("Method failed: " + getMethod.getStatusLine()); } responseBody = getMethod.getResponseBodyAsString(); } catch (UnknownHostException e) { e.printStackTrace(); LOG.error("??" + e.getMessage()); } catch (HttpException e) { // ? e.printStackTrace(); LOG.error("?" + e.getMessage()); } catch (IOException e) { // ? e.printStackTrace(); LOG.error("?" + e.getMessage()); } finally { getMethod.releaseConnection(); // } return responseBody; } /** * @author GS * @param url * @param headers * @return * @throws IOException */ public static String get(String url, Header[] headers) throws IOException { String responseBody = null; GetMethod getMethod = new GetMethod(url); getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler()); // ???? for (Header h : headers) { getMethod.addRequestHeader(h); } try { int statusCode = hc.executeMethod(getMethod); if (statusCode != HttpStatus.SC_OK) { LOG.error("Method failed: " + getMethod.getStatusLine()); } responseBody = getMethod.getResponseBodyAsString(); } catch (SocketTimeoutException e) { e.printStackTrace(); LOG.error("??" + e.getMessage()); } catch (UnknownHostException e) { e.printStackTrace(); LOG.error("??" + e.getMessage()); } catch (HttpException e) { // ? e.printStackTrace(); LOG.error("?" + e.getMessage()); } catch (IOException e) { // ? e.printStackTrace(); LOG.error("?" + e.getMessage()); } finally { getMethod.releaseConnection(); // } return responseBody; } /** * @author GS * @param url * @param para * @param cookie * @return * @throws IOException */ public static String post(String url, Map<String, String> para, String cookie) throws IOException { String responseBody = null; PostMethod postMethod = new PostMethod(url); NameValuePair[] data = new NameValuePair[para.size()]; int index = 0; for (String s : para.keySet()) { data[index++] = new NameValuePair(s, para.get(s)); } postMethod.setRequestBody(data); // ? if (!cookie.equals("")) { postMethod.setRequestHeader("cookie", cookie); } try { int statusCode = hc.executeMethod(postMethod); if (statusCode != HttpStatus.SC_OK) { LOG.error("Method failed: " + postMethod.getStatusLine()); } responseBody = postMethod.getResponseBodyAsString(); } catch (SocketTimeoutException e) { e.printStackTrace(); LOG.error("??" + e.getMessage()); } catch (UnknownHostException e) { e.printStackTrace(); LOG.error("??" + e.getMessage()); } catch (HttpException e) { e.printStackTrace(); LOG.error(e.getMessage()); } catch (IOException e) { e.printStackTrace(); LOG.error(e.getMessage()); } finally { postMethod.releaseConnection(); // } return responseBody; } public static String getCookie() { Cookie[] cookies = hc.getState().getCookies(); String tmpcookies = ""; for (Cookie c : cookies) { tmpcookies += c.toString() + ";"; } return tmpcookies; } public void clearCookies() { hc.getState().clearCookies(); } /** * HTTP?? * * @author GS * @param url * @param para * @param cookie * @return * @throws IOException */ public static int getStatusCode(String url, String cookie) throws IOException { GetMethod getMethod = new GetMethod(url); getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler()); // ???? if (!cookie.equals("")) { getMethod.setRequestHeader("cookie", cookie); } int statusCode = 0; try { statusCode = hc.executeMethod(getMethod); if (statusCode != HttpStatus.SC_OK) { LOG.error("Method failed: " + getMethod.getStatusLine()); } } catch (SocketTimeoutException e) { e.printStackTrace(); LOG.error("??" + e.getMessage()); } catch (UnknownHostException e) { e.printStackTrace(); LOG.error("??" + e.getMessage()); } catch (HttpException e) { // ? e.printStackTrace(); LOG.error("?" + e.getMessage()); } catch (IOException e) { // ? e.printStackTrace(); LOG.error("?" + e.getMessage()); } finally { getMethod.releaseConnection(); // } return statusCode; } }