httpclient 封装 http（get put post delete）请求

@SuppressWarnings("deprecation")public class HttpClientUtil { ???private static Logger logger = LoggerFactory.getLogger(HttpClientUtil.class); ???private static final String ContentEncoding = "UTF-8"; ???private static final int SocketTimeout = 5000; ????/** ????httpClient的get请求方式 ????* @return ????* @throws Exception ????*/ ???public static String doGet(String url) ??{ ???????logger.info("get请求{}",url); ?????/* ??????* 使用 GetMethod 来访问一个 URL 对应的网页,实现步骤: ??????* 1:生成一个 HttpClinet 对象并设置相应的参数。 ??????* 2:生成一个 GetMethod 对象并设置响应的参数。 ??????* 3:用 HttpClinet 生成的对象来执行 GetMethod 生成的Get方法。 ??????* 4:处理响应状态码。 ??????* 5:若响应正常，处理 HTTP 响应内容。 ??????* 6:释放连接。 ??????*/ ?????/* 1 生成 HttpClinet 对象并设置参数 */ ???????HttpClient httpClient = new HttpClient(); ???????// 设置 Http 连接超时为5秒 ???????httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(SocketTimeout); ?????/* 2 生成 GetMethod 对象并设置参数 */ ???????GetMethod getMethod = new GetMethod(url); ???????// 设置 get 请求超时为 5 秒 ???????getMethod.getParams().setParameter(HttpMethodParams.SO_TIMEOUT, SocketTimeout); ???????// 设置请求重试处理，用的是默认的重试处理：请求三次 ???????getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler()); ???????String response = ""; ?????/* 3 执行 HTTP GET 请求 */ ???????try { ???????????int statusCode = httpClient.executeMethod(getMethod); ???????????logger.info("get请求{}",statusCode); ????????/* 4 判断访问的状态码 */ ???????????if (statusCode != HttpStatus.SC_OK&&statusCode != HttpStatus.SC_CREATED&&statusCode != HttpStatus.SC_NO_CONTENT) { ???????????????logger.error("请求出错: "+ getMethod.getStatusLine()); ???????????????return response; ???????????} ???????????// 读取 HTTP 响应内容，这里简单打印网页内容 ???????????byte[] responseBody = getMethod.getResponseBody();// 读取为字节数组 ???????????response = new String(responseBody, ContentEncoding); ???????????logger.info("----------response:" + response); ???????????// 读取为 InputStream，在网页内容数据量大时候推荐使用 ???????????// InputStream response = getMethod.getResponseBodyAsStream(); ???????} catch (HttpException e) { ???????????// 发生致命的异常，可能是协议不对或者返回的内容有问题 ???????????logger.error("请检查输入的URL!"); ???????????e.printStackTrace(); ???????} catch (IOException e) { ???????????// 发生网络异常 ???????????logger.error("发生网络异常!"); ???????????e.printStackTrace(); ???????} finally { ????????/* 6 .释放连接 */ ???????????getMethod.releaseConnection(); ???????} ???????return response; ???} ????/** ????* HttpClient PUT请求 ????* @author huang ????* @date 2013-4-10 ????* @return ????*/ ???public static String doPut(String uri,String jsonObj){ ???????logger.info("put请求{},{}",uri,jsonObj); ????????String resStr = ""; ???????HttpClient htpClient = new HttpClient(); ???????PutMethod putMethod = new PutMethod(uri); ???????putMethod.addRequestHeader( "Content-Type","application/json" ); ???????putMethod.getParams().setParameter( HttpMethodParams.HTTP_CONTENT_CHARSET, ContentEncoding ); ???????putMethod.setRequestBody( jsonObj ); ???????try{ ???????????int statusCode = htpClient.executeMethod( putMethod ); ???????????logger.info("put请求{}",statusCode); ???????????if (statusCode != HttpStatus.SC_OK&&statusCode != HttpStatus.SC_CREATED&&statusCode != HttpStatus.SC_NO_CONTENT) { ???????????????logger.error("Method failed: "+putMethod.getStatusLine() ); ???????????????return resStr; ???????????} ???????????byte[] responseBody = putMethod.getResponseBody(); ???????????resStr = new String(responseBody,ContentEncoding); ???????????logger.info("response:" + resStr); ???????}catch(Exception e){ ???????????logger.error(" failed: " + e.getMessage()); ???????????e.printStackTrace(); ???????}finally{ ???????????putMethod.releaseConnection(); ???????} ???????return resStr; ???} ????/** ????* post请求 ????* @param url ????* @param jsonObj ????* @return ????*/ ???@SuppressWarnings({ "resource" }) ???public static String doPost(String url,String jsonObj){ ???????logger.info("post请求{},{}",url,jsonObj); ????????DefaultHttpClient client = new DefaultHttpClient(); ???????HttpPost post = new HttpPost(url); ???????post.setHeader("Content-Type", "application/json; charset=UTF-8"); ???????String response = ""; ???????try { ???????????StringEntity stringEntity = new StringEntity( jsonObj,"UTF-8"); ???????????stringEntity.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json")); ???????????post.setEntity(stringEntity); ???????????HttpResponse res = client.execute(post); ???????????int statusCode=res.getStatusLine().getStatusCode(); ???????????logger.info("post请求",statusCode); ???????????if (statusCode != HttpStatus.SC_OK&&statusCode != HttpStatus.SC_CREATED&&statusCode != HttpStatus.SC_NO_CONTENT) { ???????????????logger.error("Method failed: "+res.getStatusLine() ); ???????????????return response; ???????????} ???????????response = EntityUtils.toString(res.getEntity());// 返回json格式： ???????????logger.info("----------response:" + response); ???????} catch (Exception e) { ???????????logger.error(" failed: " + e.getMessage()); ???????????e.printStackTrace(); ???????} ???????return response; ???} ????public static String doDelete(String uri) ?{ ???????logger.info("delete请求",uri); ????????String data= ""; ???????HttpClient httpClient= new HttpClient(); ???????httpClient.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET, ContentEncoding); ???????DeleteMethod method = null; ???????try{ ???????????method= new DeleteMethod(); ???????????method.setURI(new URI(uri,false)); ???????????method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler()); ???????????method.getParams().setParameter(HttpMethodParams.SO_TIMEOUT, SocketTimeout); ???????????int statusCode = httpClient.executeMethod(method); ???????????logger.info("delete请求",statusCode); ???????????if (statusCode != HttpStatus.SC_OK&&statusCode != HttpStatus.SC_CREATED&&statusCode != HttpStatus.SC_NO_CONTENT) { ???????????????logger.error("Method failed: " + method.getStatusLine()); ???????????????return data; ???????????} ???????????data= new String(method.getResponseBody(),ContentEncoding); ???????????logger.info("response:" + data); ???????}catch(HttpException e){ ???????????e.printStackTrace(); ???????????logger.error("Please check your provided http address!"); ???????}catch(IOException e){ ???????????e.printStackTrace(); ???????????logger.error(e.getMessage()); ???????}catch(Exception e){ ???????????e.printStackTrace(); ???????????logger.error(e.getMessage()); ???????}finally{ ???????????if(method!=null) ???????????????method.releaseConnection(); ???????} ???????return data; ???} ?????public static void main(String args[]) { ???}}