HttpClient工具类
jopen
12年前
package com.cucpay.tradeportal.util; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.URL; import java.security.cert.CertificateException; import java.security.cert.X509Certificate; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import javax.net.ssl.SSLContext; import javax.net.ssl.TrustManager; import javax.net.ssl.X509TrustManager; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.NameValuePair; import org.apache.http.ParseException; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.client.utils.URLEncodedUtils; import org.apache.http.conn.scheme.Scheme; import org.apache.http.conn.ssl.SSLSocketFactory; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.message.BasicNameValuePair; import org.apache.http.protocol.HTTP; import org.apache.http.util.EntityUtils; /** * 封装了一些采用HttpClient发送HTTP请求的方法 * @see 本工具所采用的是最新的HttpComponents-Client-4.2.1 * @see 关于本工具类中的一些解释说明,可参考下方列出的我的三篇文章 * @see http://blog.csdn.net/jadyer/article/details/7615830 * @see http://blog.csdn.net/jadyer/article/details/7615880 * @see http://blog.csdn.net/jadyer/article/details/7802139 * @create Feb 1, 2012 3:02:27 PM * @update Oct 8, 2012 3:48:55 PM * @author 玄玉<http://blog.csdn/net/jadyer> * @version v1.3 * @history v1.0-->新建<code>sendGetRequest(String,String)</code>和<code>sendPostRequest(String,Map<String,String>,String,String)</code>方法 * @history v1.1-->新增<code>sendPostSSLRequest(String,Map<String,String>,String,String)</code>方法,用于发送HTTPS的POST请求 * @history v1.2-->新增<code>sendPostRequest(String,String,boolean,String,String)</code>方法,用于发送HTTP协议报文体为任意字符串的POST请求 * @history v1.3-->新增<code>java.net.HttpURLConnection</code>实现的<code>sendPostRequestByJava()</code>方法 */ public class HttpClientUtil { private HttpClientUtil(){} /** * 发送HTTP_GET请求 * @see 该方法会自动关闭连接,释放资源 * @param requestURL 请求地址(含参数) * @param decodeCharset 解码字符集,解析响应数据时用之,其为null时默认采用UTF-8解码 * @return 远程主机响应正文 */ public static String sendGetRequest(String reqURL, String decodeCharset){ long responseLength = 0; //响应长度 String responseContent = null; //响应内容 HttpClient httpClient = new DefaultHttpClient(); //创建默认的httpClient实例 HttpGet httpGet = new HttpGet(reqURL); //创建org.apache.http.client.methods.HttpGet try{ HttpResponse response = httpClient.execute(httpGet); //执行GET请求 HttpEntity entity = response.getEntity(); //获取响应实体 if(null != entity){ responseLength = entity.getContentLength(); responseContent = EntityUtils.toString(entity, decodeCharset==null ? "UTF-8" : decodeCharset); EntityUtils.consume(entity); //Consume response content } System.out.println("请求地址: " + httpGet.getURI()); System.out.println("响应状态: " + response.getStatusLine()); System.out.println("响应长度: " + responseLength); System.out.println("响应内容: " + responseContent); }catch(ClientProtocolException e){ LogUtil.getLogger().error("该异常通常是协议错误导致,比如构造HttpGet对象时传入的协议不对(将'http'写成'htp')或者服务器端返回的内容不符合HTTP协议要求等,堆栈信息如下", e); }catch(ParseException e){ LogUtil.getLogger().error(e.getMessage(), e); }catch(IOException e){ LogUtil.getLogger().error("该异常通常是网络原因引起的,如HTTP服务器未启动等,堆栈信息如下", e); }finally{ httpClient.getConnectionManager().shutdown(); //关闭连接,释放资源 } return responseContent; } /** * 发送HTTP_POST请求 * @see 该方法为<code>sendPostRequest(String,String,boolean,String,String)</code>的简化方法 * @see 该方法在对请求数据的编码和响应数据的解码时,所采用的字符集均为UTF-8 * @see 当<code>isEncoder=true</code>时,其会自动对<code>sendData</code>中的[中文][|][ ]等特殊字符进行<code>URLEncoder.encode(string,"UTF-8")</code> * @param isEncoder 用于指明请求数据是否需要UTF-8编码,true为需要 */ public static String sendPostRequest(String reqURL, String sendData, boolean isEncoder){ return sendPostRequest(reqURL, sendData, isEncoder, null, null); } /** * 发送HTTP_POST请求 * @see 该方法会自动关闭连接,释放资源 * @see 当<code>isEncoder=true</code>时,其会自动对<code>sendData</code>中的[中文][|][ ]等特殊字符进行<code>URLEncoder.encode(string,encodeCharset)</code> * @param reqURL 请求地址 * @param sendData 请求参数,若有多个参数则应拼接成param11=value11¶m22=value22¶m33=value33的形式后,传入该参数中 * @param isEncoder 请求数据是否需要encodeCharset编码,true为需要 * @param encodeCharset 编码字符集,编码请求数据时用之,其为null时默认采用UTF-8解码 * @param decodeCharset 解码字符集,解析响应数据时用之,其为null时默认采用UTF-8解码 * @return 远程主机响应正文 */ public static String sendPostRequest(String reqURL, String sendData, boolean isEncoder, String encodeCharset, String decodeCharset){ String responseContent = null; HttpClient httpClient = new DefaultHttpClient(); HttpPost httpPost = new HttpPost(reqURL); //httpPost.setHeader(HTTP.CONTENT_TYPE, "application/x-www-form-urlencoded; charset=UTF-8"); httpPost.setHeader(HTTP.CONTENT_TYPE, "application/x-www-form-urlencoded"); try{ if(isEncoder){ List<NameValuePair> formParams = new ArrayList<NameValuePair>(); for(String str : sendData.split("&")){ formParams.add(new BasicNameValuePair(str.substring(0,str.indexOf("=")), str.substring(str.indexOf("=")+1))); } httpPost.setEntity(new StringEntity(URLEncodedUtils.format(formParams, encodeCharset==null ? "UTF-8" : encodeCharset))); }else{ httpPost.setEntity(new StringEntity(sendData)); } HttpResponse response = httpClient.execute(httpPost); HttpEntity entity = response.getEntity(); if (null != entity) { responseContent = EntityUtils.toString(entity, decodeCharset==null ? "UTF-8" : decodeCharset); EntityUtils.consume(entity); } }catch(Exception e){ LogUtil.getLogger().error("与[" + reqURL + "]通信过程中发生异常,堆栈信息如下", e); }finally{ httpClient.getConnectionManager().shutdown(); } return responseContent; } /** * 发送HTTP_POST请求 * @see 该方法会自动关闭连接,释放资源 * @see 该方法会自动对<code>params</code>中的[中文][|][ ]等特殊字符进行<code>URLEncoder.encode(string,encodeCharset)</code> * @param reqURL 请求地址 * @param params 请求参数 * @param encodeCharset 编码字符集,编码请求数据时用之,其为null时默认采用UTF-8解码 * @param decodeCharset 解码字符集,解析响应数据时用之,其为null时默认采用UTF-8解码 * @return 远程主机响应正文 */ public static String sendPostRequest(String reqURL, Map<String, String> params, String encodeCharset, String decodeCharset){ String responseContent = null; HttpClient httpClient = new DefaultHttpClient(); HttpPost httpPost = new HttpPost(reqURL); List<NameValuePair> formParams = new ArrayList<NameValuePair>(); //创建参数队列 for(Map.Entry<String,String> entry : params.entrySet()){ formParams.add(new BasicNameValuePair(entry.getKey(), entry.getValue())); } try{ httpPost.setEntity(new UrlEncodedFormEntity(formParams, encodeCharset==null ? "UTF-8" : encodeCharset)); HttpResponse response = httpClient.execute(httpPost); HttpEntity entity = response.getEntity(); if (null != entity) { responseContent = EntityUtils.toString(entity, decodeCharset==null ? "UTF-8" : decodeCharset); EntityUtils.consume(entity); } }catch(Exception e){ LogUtil.getLogger().error("与[" + reqURL + "]通信过程中发生异常,堆栈信息如下", e); }finally{ httpClient.getConnectionManager().shutdown(); } return responseContent; } /** * 发送HTTPS_POST请求 * @see 该方法为<code>sendPostSSLRequest(String,Map<String,String>,String,String)</code>方法的简化方法 * @see 该方法在对请求数据的编码和响应数据的解码时,所采用的字符集均为UTF-8 * @see 该方法会自动对<code>params</code>中的[中文][|][ ]等特殊字符进行<code>URLEncoder.encode(string,"UTF-8")</code> */ public static String sendPostSSLRequest(String reqURL, Map<String, String> params){ return sendPostSSLRequest(reqURL, params, null, null); } /** * 发送HTTPS_POST请求 * @see 该方法会自动关闭连接,释放资源 * @see 该方法会自动对<code>params</code>中的[中文][|][ ]等特殊字符进行<code>URLEncoder.encode(string,encodeCharset)</code> * @param reqURL 请求地址 * @param params 请求参数 * @param encodeCharset 编码字符集,编码请求数据时用之,其为null时默认采用UTF-8解码 * @param decodeCharset 解码字符集,解析响应数据时用之,其为null时默认采用UTF-8解码 * @return 远程主机响应正文 */ public static String sendPostSSLRequest(String reqURL, Map<String, String> params, String encodeCharset, String decodeCharset){ String responseContent = ""; HttpClient httpClient = new DefaultHttpClient(); X509TrustManager xtm = new X509TrustManager(){ public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {} public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {} public X509Certificate[] getAcceptedIssuers() {return null;} }; try { SSLContext ctx = SSLContext.getInstance("TLS"); ctx.init(null, new TrustManager[]{xtm}, null); SSLSocketFactory socketFactory = new SSLSocketFactory(ctx); httpClient.getConnectionManager().getSchemeRegistry().register(new Scheme("https", 443, socketFactory)); HttpPost httpPost = new HttpPost(reqURL); List<NameValuePair> formParams = new ArrayList<NameValuePair>(); for(Map.Entry<String,String> entry : params.entrySet()){ formParams.add(new BasicNameValuePair(entry.getKey(), entry.getValue())); } httpPost.setEntity(new UrlEncodedFormEntity(formParams, encodeCharset==null ? "UTF-8" : encodeCharset)); HttpResponse response = httpClient.execute(httpPost); HttpEntity entity = response.getEntity(); if (null != entity) { responseContent = EntityUtils.toString(entity, decodeCharset==null ? "UTF-8" : decodeCharset); EntityUtils.consume(entity); } } catch (Exception e) { LogUtil.getLogger().error("与[" + reqURL + "]通信过程中发生异常,堆栈信息为", e); } finally { httpClient.getConnectionManager().shutdown(); } return responseContent; } /** * 发送HTTP_POST请求 * @see 若发送的<code>params</code>中含有中文,记得按照双方约定的字符集将中文<code>URLEncoder.encode(string,encodeCharset)</code> * @see 本方法默认的连接超时时间为30秒,默认的读取超时时间为30秒 * @param reqURL 请求地址 * @param params 发送到远程主机的正文数据,其数据类型为<code>java.util.Map<String, String></code> * @return 远程主机响应正文`HTTP状态码,如<code>"SUCCESS`200"</code><br>若通信过程中发生异常则返回"Failed`HTTP状态码",如<code>"Failed`500"</code> */ public static String sendPostRequestByJava(String reqURL, Map<String, String> params){ StringBuilder sendData = new StringBuilder(); for(Map.Entry<String, String> entry : params.entrySet()){ sendData.append(entry.getKey()).append("=").append(entry.getValue()).append("&"); } if(sendData.length() > 0){ sendData.setLength(sendData.length() - 1); //删除最后一个&符号 } return sendPostRequestByJava(reqURL, sendData.toString()); } /** * 发送HTTP_POST请求 * @see 若发送的<code>sendData</code>中含有中文,记得按照双方约定的字符集将中文<code>URLEncoder.encode(string,encodeCharset)</code> * @see 本方法默认的连接超时时间为30秒,默认的读取超时时间为30秒 * @param reqURL 请求地址 * @param sendData 发送到远程主机的正文数据 * @return 远程主机响应正文`HTTP状态码,如<code>"SUCCESS`200"</code><br>若通信过程中发生异常则返回"Failed`HTTP状态码",如<code>"Failed`500"</code> */ public static String sendPostRequestByJava(String reqURL, String sendData){ HttpURLConnection httpURLConnection = null; OutputStream out = null; //写 InputStream in = null; //读 int httpStatusCode = 0; //远程主机响应的HTTP状态码 try{ URL sendUrl = new URL(reqURL); httpURLConnection = (HttpURLConnection)sendUrl.openConnection(); httpURLConnection.setRequestMethod("POST"); httpURLConnection.setDoOutput(true); //指示应用程序要将数据写入URL连接,其值默认为false httpURLConnection.setUseCaches(false); httpURLConnection.setConnectTimeout(30000); //30秒连接超时 httpURLConnection.setReadTimeout(30000); //30秒读取超时 out = httpURLConnection.getOutputStream(); out.write(sendData.toString().getBytes()); //清空缓冲区,发送数据 out.flush(); //获取HTTP状态码 httpStatusCode = httpURLConnection.getResponseCode(); //该方法只能获取到[HTTP/1.0 200 OK]中的[OK] //若对方响应的正文放在了返回报文的最后一行,则该方法获取不到正文,而只能获取到[OK],稍显遗憾 //respData = httpURLConnection.getResponseMessage(); // //处理返回结果 // BufferedReader br = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream())); // String row = null; // String respData = ""; // if((row=br.readLine()) != null){ //readLine()方法在读到换行[\n]或回车[\r]时,即认为该行已终止 // respData = row; //HTTP协议POST方式的最后一行数据为正文数据 // } // br.close(); in = httpURLConnection.getInputStream(); byte[] byteDatas = new byte[in.available()]; in.read(byteDatas); return new String(byteDatas) + "`" + httpStatusCode; }catch(Exception e){ LogUtil.getLogger().error(e.getMessage()); return "Failed`" + httpStatusCode; }finally{ if(out != null){ try{ out.close(); }catch (Exception e){ LogUtil.getLogger().error("关闭输出流时发生异常,堆栈信息如下", e); } } if(in != null){ try{ in.close(); }catch(Exception e){ LogUtil.getLogger().error("关闭输入流时发生异常,堆栈信息如下", e); } } if(httpURLConnection != null){ httpURLConnection.disconnect(); httpURLConnection = null; } } } }来自:http://blog.csdn.net/jadyer/article/details/8087960