public static String post(String urlStr, String strInfo){ ???URL localURL; ???OutputStream outputStream = null; ???OutputStreamWriter outputStreamWriter = null; ???InputStream inputStream = null; ???InputStreamReader inputStreamReader = null; ???BufferedReader reader = null; ???StringBuffer resultBuffer = new StringBuffer(); ???String tempLine = null; ???try { ???????localURL = new URL(urlStr); ???????URLConnection connection; ???????connection = localURL.openConnection(); ???????HttpURLConnection httpURLConnection = (HttpURLConnection)connection; ???????httpURLConnection.setDoOutput(true); ???????httpURLConnection.setRequestMethod("POST"); ???????httpURLConnection.setRequestProperty("Accept-Charset", DEFAULT_ENCODING); ???????httpURLConnection.setRequestProperty("Content-Type", "text/xml"); ???????outputStreamWriter = new OutputStreamWriter(httpURLConnection.getOutputStream(),"utf-8"); ???????outputStreamWriter.write(strInfo); ???????outputStreamWriter.flush(); ???????outputStreamWriter.close(); ???????//接收响应流 ???????inputStream = httpURLConnection.getInputStream(); ???????inputStreamReader = new InputStreamReader(inputStream); ???????reader = new BufferedReader(inputStreamReader); ???????while ((tempLine = reader.readLine()) != null) { ???????????resultBuffer.append(tempLine); ???????} ???} catch (IOException e) { ???????e.printStackTrace(); ???} catch (Exception e) { ???????e.printStackTrace(); ???} finally { ???????try { ???????????if (outputStreamWriter != null) { ???????????????outputStreamWriter.close(); ???????????} ???????????if (outputStream != null) { ???????????????outputStream.close(); ???????????} ???????????if (reader != null) { ???????????????reader.close(); ???????????} ???????????if (inputStreamReader != null) { ???????????????inputStreamReader.close(); ???????????} ???????????if (inputStream != null) { ???????????????inputStream.close(); ???????????} ???????} catch (IOException e) { ???????????e.printStackTrace(); ???????} } ?????return resultBuffer.toString();}
public static String post(String urlStr, String strInfo) { ???String reStr=""; ???try { ???????????????URL url = new URL(urlStr); ???????????????URLConnection con = ?url.openConnection(); ???????????????con.setDoOutput(true); ???????????????con.setRequestProperty("Pragma:", "no-cache"); ???????????????con.setRequestProperty("Cache-Control", "no-cache"); ???????????????con.setRequestProperty("Content-Type", "text/xml"); ???????????????OutputStreamWriter out = new OutputStreamWriter(con.getOutputStream()); ???????????????out.write(new String(strInfo.getBytes("ISO-8859-1"),"UTF-8")); ???????????????out.flush(); ???????????????out.close(); ???????????????BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream(), "utf-8")); ???????????????String line = ""; ???????????????for (line = br.readLine(); line != null; line = br.readLine()) { ???????????????????reStr += line; ???????????????} ???} catch (MalformedURLException e) { ????????e.printStackTrace(); ???} catch (IOException e) { ???????e.printStackTrace(); ???} ???return reStr;} ???public static String post(String urlStr, String data){ ???String result = null; ???//创建默认的httpclient实例 ????CloseableHttpClient client = HttpClients.createDefault(); ???//CloseableHttpClient client = new DefaultHttpClient(); ???StringEntity entity = new StringEntity(data, "UTF-8"); ???HttpPost post = new HttpPost(urlStr); ???post.setEntity(entity); ???try{ ???????CloseableHttpResponse ?response = client.execute(post); ???????result = EntityUtils.toString(response.getEntity()); ???????System.out.println(result.toString()); ???????response.close(); ???} catch (ClientProtocolException e1) { ???????e1.printStackTrace(); ???} catch (IOException e1) { ???????e1.printStackTrace(); ???} catch (Exception e) { ???????e.printStackTrace(); ???} ???return result.toString();}
???public static String post(String urlStr, String data)throws ClientProtocolException, IOException{ ???????????String result = null; ???????//创建默认的httpclient实例 ????????CloseableHttpClient client = HttpClients.createDefault(); ???????StringEntity entity = new StringEntity(data, "UTF-8"); ???????HttpPost post = new HttpPost(urlStr); ???????post.setEntity(entity); ???????CloseableHttpResponse response = client.execute(post); ???????try{ ???????????result = EntityUtils.toString(response.getEntity()); ???????????System.out.println(result.toString()); ???????} catch (Exception e) { ???????????e.printStackTrace(); ???????} ???????finally { ???????????response.close(); ???????} ???????return result.toString(); ????}get
public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr) { ?????JSONObject jsonObject = null; ?????StringBuffer buffer = new StringBuffer(); ?????try { ?????????URL url = new URL(requestUrl); ?????????HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection(); ?????????//httpUrlConn.setSSLSocketFactory(ssf); ?????????httpUrlConn.setDoOutput(true); ?????????httpUrlConn.setDoInput(true); ?????????httpUrlConn.setUseCaches(false); ?????????// 设置请求方式（GET/POST） ?????????httpUrlConn.setRequestMethod(requestMethod); ?????????if ("GET".equalsIgnoreCase(requestMethod)) ?????????????httpUrlConn.connect(); ?????????// 当有数据需要提交时 ?????????if (null != outputStr) { ?????????????OutputStream outputStream = httpUrlConn.getOutputStream(); ?????????????// 注意编码格式，防止中文乱码 ?????????????outputStream.write(outputStr.getBytes("UTF-8")); ?????????????outputStream.close(); ?????????} ?????????// 将返回的输入流转换成字符串 ?????????InputStream inputStream = httpUrlConn.getInputStream(); ?????????InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "UTF-8"); ?????????BufferedReader bufferedReader = new BufferedReader(inputStreamReader); ?????????String str = null; ?????????while ((str = bufferedReader.readLine()) != null) { ?????????????buffer.append(str); ?????????} ?????????bufferedReader.close(); ?????????inputStreamReader.close(); ?????????// 释放资源 ?????????inputStream.close(); ?????????inputStream = null; ?????????httpUrlConn.disconnect(); ?????????jsonObject = JSONObject.fromObject(buffer.toString()); ?????} catch (ConnectException ce) { ?????????log.error("Weixin server connection timed out."); ?????} catch (Exception e) { ?????????log.error("https request error:{}", e); ?????} ?????return jsonObject; ?} public static String get(String requestUrl) { ?????StringBuffer buffer = new StringBuffer(); ?????try { ?????????URL url = new URL(requestUrl); ?????????HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection(); ?????????httpUrlConn.setDoOutput(false); ?????????httpUrlConn.setDoInput(true); ?????????httpUrlConn.setUseCaches(false); ?????????httpUrlConn.setRequestMethod("GET"); ?????????httpUrlConn.connect(); ?????????// 将返回的输入流转换成字符串 ?????????InputStream inputStream = httpUrlConn.getInputStream(); ?????????//InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8"); ?????????InputStreamReader inputStreamReader = new InputStreamReader(inputStream); ?????????BufferedReader bufferedReader = new BufferedReader(inputStreamReader); ?????????String str = null; ?????????while ((str = bufferedReader.readLine()) != null) { ?????????????buffer.append(str); ?????????} ?????????bufferedReader.close(); ?????????inputStreamReader.close(); ?????????// 释放资源 ?????????inputStream.close(); ?????????inputStream = null; ?????????httpUrlConn.disconnect(); ?????} catch (Exception e) { ?????} ?????return buffer.toString(); ?} ? ????/** ???????????* @Title: getUrl ???????????* @Description: 发起httpGET请求 ???????????* @param url ????????* @return String ????????????*/ ???????public static String getUrl(String url){ ???????String result = null; ???????//创建默认的httpclient实例 ???????CloseableHttpClient client = HttpClients.createDefault(); ???????//根据地址获取请求 ???????HttpGet get = new HttpGet(url); ???????//通过请求对象获取响应对象 ???????try { ???????????CloseableHttpResponse response=client.execute(get); ???????????// 判断网络连接状态码是否正常(0--200都数正常) ???????????try{ ???????????if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { ???????????????System.out.println("gqjcHttpUtil getUrl()方法 网络连接状态码正常"); ???????????????//然而返回的实体内并没有，加这个会报空异常也是没办法 ???????????????//System.out.println("获取数据编码方式为："+response.getEntity().getContentEncoding().toString()); ???????????????//要设置编码格式否则中文名有乱码 ???????????????result= EntityUtils.toString(response.getEntity(), "utf-8"); ???????????????System.out.println("gqjcHttpUtil result:"+result); ???????????????return result; ???????????????} ????????????}finally { ???????????????response.close(); ???????????} ???????} http的post请求和get请求
原文地址：http://blog.51cto.com/liujin/2317382