public class HttpclientUtils {
@Autowired(required = false)private CloseableHttpClient httpClient;@Autowired(required = false)private RequestConfig config;/** * 没有带参数GET请求 * ?* @param url 请求地址 * @return 返回状态码为200 返回页面内容 否则,返回null * @throws Exception */public String doget(String url) throws Exception { ???// 创建http GET请求 ???HttpGet httpGet = new HttpGet(url); ???// 设置请求参数 ???httpGet.setConfig(config); ???CloseableHttpResponse response = null; ???try { ???????// 执行请求 ???????response = httpClient.execute(httpGet); ???????// 判断返回状态是否为200 ???????if (response.getStatusLine().getStatusCode() == 200) { ???????????String content = EntityUtils.toString(response.getEntity(), "UTF-8"); ???????????return content; ???????} ???} finally { ???????if (response != null) { ???????????response.close(); ???????} ???????// httpClient.close(); ???} ???return null;}/** * 带有参数GET请求 * ?* @param url 请求地址 * @param params 请求参数 * @return 返回状态码为200 返回页面内容 否则,返回null * @throws Exception */public String doget(String url, Map<String, Object> params) throws Exception { ???// 定义请求的参数 ???URIBuilder uriBuilder = new URIBuilder(url); ???if (!params.isEmpty()) { ???????for (Map.Entry<String, Object> entry : params.entrySet()) { ???????????uriBuilder.setParameter(entry.getKey(), entry.getValue().toString()); ???????} ???} ???URI uri = uriBuilder.build(); ???// 创建http GET请求 ???HttpGet httpGet = new HttpGet(uri); ???// 设置请求参数 ???httpGet.setConfig(config); ???CloseableHttpResponse response = null; ???try { ???????// 执行请求 ???????response = httpClient.execute(httpGet); ???????// 判断返回状态是否为200 ???????if (response.getStatusLine().getStatusCode() == 200) { ???????????return EntityUtils.toString(response.getEntity(), "UTF-8"); ???????} ???} finally { ???????if (response != null) { ???????????response.close(); ???????} ???????// httpclient.close(); ???} ???return null;}/** * 带有参数的POST * @param url 请求地址 * @param params 请求参数 * @return 返回状态码为200 HttpResut(200,内容) 否则,返回HttpResut(当前状态码,null) * @throws Exception */public HttpResut dopost(String url, Map<String, Object> params) throws Exception { ???// 创建http POST请求 ???HttpPost httpPost = new HttpPost(url); ???// 设置2个post参数，一个是scope、一个是q ???List<NameValuePair> parameters = new ArrayList<NameValuePair>(0); ???if (!params.isEmpty()) { ???????for (Map.Entry<String, Object> entry : params.entrySet()) { ???????????parameters.add(new BasicNameValuePair(entry.getKey(), entry.getValue().toString())); ???????} ???} ???// 构造一个form表单式的实体 ???UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(parameters, "UTF-8"); ???// 将请求实体设置到httpPost对象中 ???httpPost.setEntity(formEntity); ???// 设置请求参数 ???httpPost.setConfig(config); ???CloseableHttpResponse response = null; ???try { ???????// 执行请求 ???????response = httpClient.execute(httpPost); ???????// 判断返回状态是否为200 ???????if (response.getStatusLine().getStatusCode() == 200) { ???????????return new HttpResut(response.getStatusLine().getStatusCode(), EntityUtils.toString( ???????????????????response.getEntity(), "UTF-8")); ???????} ???} finally { ???????if (response != null) { ???????????response.close(); ???????} ???????// httpclient.close(); ???} ???return new HttpResut(response.getStatusLine().getStatusCode(), null);}/** * 没有带参数POST请求 * @throws Exception ?*/public HttpResut dopost(String url) throws Exception{ ???return this.dopost(url, new HashMap<String, Object>());}//doput dodelete dopostjson .../** * 指定POST请求 * ?* @param url * @param param 请求参数 * @return 状态码和请求的body * @throws IOException */public HttpResut doPostJson(String url, String json) throws IOException { ???// 创建http POST请求 ???HttpPost httpPost = new HttpPost(url); ???httpPost.setConfig(this.config); ???if (json != null) { ???????// 构造一个字符串的实体 ???????StringEntity stringEntity = new StringEntity(json, ContentType.APPLICATION_JSON); ???????// 将请求实体设置到httpPost对象中 ???????httpPost.setEntity(stringEntity); ???} ???CloseableHttpResponse response = null; ???try { ???????// 执行请求 ???????response = httpClient.execute(httpPost); ???????if (response.getEntity() != null) { ???????????return new HttpResut(response.getStatusLine().getStatusCode(), EntityUtils.toString( ???????????????????response.getEntity(), "UTF-8")); ???????} ???????return new HttpResut(response.getStatusLine().getStatusCode(), null); ???} finally { ???????if (response != null) { ???????????response.close(); ???????} ???}}/** * 执行PUT请求 * ?* @param url * @param param 请求参数 * @return 状态码和请求的body * @throws IOException */public HttpResut doPut(String url, Map<String, Object> param) throws IOException { ???// 创建http POST请求 ???HttpPut httpPut = new HttpPut(url); ???httpPut.setConfig(config); ???if (param != null) { ???????// 设置post参数 ???????List<NameValuePair> parameters = new ArrayList<NameValuePair>(0); ???????for (Map.Entry<String, Object> entry : param.entrySet()) { ???????????parameters.add(new BasicNameValuePair(entry.getKey(), entry.getValue().toString())); ???????} ???????// 构造一个form表单式的实体,并且指定参数的编码为UTF-8 ???????UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(parameters, "UTF-8"); ???????// 将请求实体设置到httpPost对象中 ???????httpPut.setEntity(formEntity); ???} ???CloseableHttpResponse response = null; ???try { ???????// 执行请求 ???????response = httpClient.execute(httpPut); ???????if (response.getEntity() != null) { ???????????return new HttpResut(response.getStatusLine().getStatusCode(), EntityUtils.toString( ???????????????????response.getEntity(), "UTF-8")); ???????} ???????return new HttpResut(response.getStatusLine().getStatusCode(), null); ???} finally { ???????if (response != null) { ???????????response.close(); ???????} ???}}/** * 执行PUT请求 * ?* @param url * @return 状态码和请求的body * @throws IOException */public HttpResut doPut(String url) throws IOException { ???return this.doPut(url, null);}/** * 执行DELETE请求,通过POST提交，_method指定真正的请求方法 * ?* @param url * @param param 请求参数 * @return 状态码和请求的body * @throws IOException */public HttpResut doDelete(String url, Map<String, Object> param) throws Exception { ???param.put("_method", "DELETE"); ???return this.dopost(url, param);}/** * 执行DELETE请求(真正的DELETE请求) * ?* @param url * @return 状态码和请求的body * @throws IOException */public HttpResut doDelete(String url) throws Exception { ???// 创建http DELETE请求 ???HttpDelete httpDelete = new HttpDelete(url); ???httpDelete.setConfig(this.config); ???CloseableHttpResponse response = null; ???try { ???????// 执行请求 ???????response = httpClient.execute(httpDelete); ???????if (response.getEntity() != null) { ???????????return new HttpResut(response.getStatusLine().getStatusCode(), EntityUtils.toString( ???????????????????response.getEntity(), "UTF-8")); ???????} ???????return new HttpResut(response.getStatusLine().getStatusCode(), null); ???} finally { ???????if (response != null) { ???????????response.close(); ???????} ???}}}