public class HttpClient { //get请求方法 public String sendGet(String url, String data) { Date date = new Date(); long time1 = new Date().getTime(); String result = ""; BufferedReader in = null; try { String urlNameString = url + "?" + data; URL realUrl = new URL(urlNameString); // 打开和URL之间的连接 URLConnection connection = realUrl.openConnection(); // 设置通用的请求属性 connection.setRequestProperty("accept", "*/*"); connection.setRequestProperty("connection", "Keep-Alive"); connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); // 建立实际的连接 connection.connect(); // 获取所有响应头字段 Map<String, List<String>> map = connection.getHeaderFields(); // 遍历所有的响应头字段 for (String key : map.keySet()) { System.out.println(key + "--->" + map.get(key)); } // 定义 BufferedReader输入流来读取URL的响应 in = new BufferedReader(new InputStreamReader(connection.getInputStream(),"UTF-8"));//防止乱码 String line; while ((line = in.readLine()) != null) { result += line; } } catch (Exception e) { System.out.println("发送GET请求出现异常!" + e); e.printStackTrace(); } // 使用finally块来关闭输入流 finally { try { if (in != null) { in.close(); } } catch (Exception e2) { e2.printStackTrace(); } } long time2 = new Date().getTime(); long time3 = time2-time1; return result+" 耗时:"+String.valueOf(time3)+"ms"; } //post请求方法 public String sendPost(String url, String param[]) { //参数准备,具体需要参数自己魔改-------------------------------- String data = ""; for (int i = 0; i < param.length; i++) { if(i==0){ data=data+param[i];//把数组转为字符串 }else{ data=data+","+param[i]; } } String send = "{'data':{"+data+"}}"; System.out.println("请求参数:"+send); //参数准备,具体需要参数自己魔改-------------------------------- Date date = new Date(); long time1 = new Date().getTime(); String result = null; try { CloseableHttpClient httpclient = null; CloseableHttpResponse httpresponse = null; try { httpclient = HttpClients.createDefault();//创建默认的httpClient实例 HttpPost httppost = new HttpPost(url);//创建httppost StringEntity stringentity = new StringEntity(send,ContentType.create("text/json", "UTF-8"));//防止乱码指定编码格式 httppost.setEntity(stringentity);//设置请求参数 httpresponse = httpclient.execute(httppost);//发送请求 result = EntityUtils.toString(httpresponse.getEntity());//获取返回值,逻辑值转换为字符串返回数据,遍历返回值 } finally { if (httpclient != null) { httpclient.close();//启用过则关闭 } if (httpresponse != null) { httpresponse.close();//启用过则关闭 } } } catch (Exception e) { e.printStackTrace(); } long time2 = new Date().getTime(); long time3 = time2-time1; return result+"-"+"耗时:"+String.valueOf(time3)+"ms"; } }