package cn.mb.cloud.auth.security.util; import org.apache.commons.lang.StringUtils; import org.apache.http.HttpEntity; import org.apache.http.NameValuePair; import org.apache.http.client.config.RequestConfig; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpPost; import org.apache.http.conn.ssl.SSLConnectionSocketFactory; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClientBuilder; import org.apache.http.impl.client.HttpClients; import org.apache.http.message.BasicNameValuePair; import org.apache.http.ssl.SSLContextBuilder; import org.apache.http.util.EntityUtils; import javax.net.ssl.SSLContext; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import java.net.URL; import java.net.URLConnection; import java.util.ArrayList; import java.util.List; import java.util.Map; import java.util.Set; /* * 利用HttpClient进行post请求的工具类 */ public class HttpClientUtil { private static final String DEFAULT_CHARSET = "UTF-8"; private static String reqCharset = DEFAULT_CHARSET; private static String resCharset = DEFAULT_CHARSET; private static CloseableHttpClient httpClient; /** * 信任SSL证书 */ static { try { SSLContext sslContext = SSLContextBuilder.create().useProtocol(SSLConnectionSocketFactory.SSL).loadTrustMaterial((x, y) -> true).build(); RequestConfig config = RequestConfig.custom().setConnectTimeout(30000).setSocketTimeout(30000).build(); httpClient = HttpClientBuilder.create().setDefaultRequestConfig(config).setSSLContext(sslContext).setSSLHostnameVerifier((x, y) -> true).build(); } catch (Exception e) { e.printStackTrace(); } } /** * 向指定URL发送GET方法的请求 * * @param url * 发送请求的URL * @param param * 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。 * @return URL 所代表远程资源的响应结果 */ public static String sendGet(String url, String param) { String result = ""; BufferedReader in = null; try { String urlNameString = url + "?" + param; 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> 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())); 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(); } } return result; } /** * 向指定 URL 发送POST方法的请求 * * @param url * 发送请求的 URL * @param param * 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。 * @return 所代表远程资源的响应结果 */ public static String sendPost(String url, String param) { PrintWriter out = null; BufferedReader in = null; String result = ""; try { URL realUrl = new URL(url); // 打开和URL之间的连接 URLConnection conn = realUrl.openConnection(); // 设置通用的请求属性 conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); // 发送POST请求必须设置如下两行 conn.setDoOutput(true); conn.setDoInput(true); // 获取URLConnection对象对应的输出流 out = new PrintWriter(conn.getOutputStream()); // 发送请求参数 out.print(param); // flush输出流的缓冲 out.flush(); // 定义BufferedReader输入流来读取URL的响应 in = new BufferedReader( new InputStreamReader(conn.getInputStream())); String line; while ((line = in.readLine()) != null) { result += line; } } catch (Exception e) { System.out.println("发送 POST 请求出现异常！"+e); e.printStackTrace(); } //使用finally块来关闭输出流、输入流 finally{ try{ if(out!=null){ out.close(); } if(in!=null){ in.close(); } } catch(IOException ex){ ex.printStackTrace(); } } return result; } public static String doPost(String url, Map params, Map headers) throws Exception { String result = ""; // 创建Httpclient对象 CloseableHttpClient httpclient = HttpClients.createDefault(); // 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 parameters = new ArrayList(); Set keys = params.keySet(); for (String key : keys) { parameters.add(new BasicNameValuePair(key, params.get(key))); } // 构造一个form表单式的实体 UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(parameters, reqCharset); // 将请求实体设置到httpPost对象中 httpPost.setEntity(formEntity); httpPost.addHeader("Content-Type", "application/json"); // 伪装浏览器请求 // httpPost.setHeader( // "User-Agent", // "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36"); //封装header if(headers != null){ Set headerKeys = headers.keySet(); for(String headerkey : headerKeys){ httpPost.addHeader(headerkey,headers.get(headerkey)); } } 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) { // 获取服务端响应的数据 result = EntityUtils.toString(response.getEntity(), resCharset); System.out.println(result); } } finally { if (response != null) { response.close(); } httpclient.close(); } return result; } /** * POST body 传JSON * @param url * @param body * @return * @throws Exception */ public static String sendHttpPost(String url, String body) throws Exception { CloseableHttpClient httpClient = HttpClients.createDefault(); HttpPost httpPost = new HttpPost(url); httpPost.setEntity(new StringEntity(body,"UTF-8")); httpPost.addHeader("Content-Type", "application/json"); CloseableHttpResponse response = httpClient.execute(httpPost); HttpEntity entity = response.getEntity(); String responseContent = EntityUtils.toString(entity, "UTF-8"); response.close(); httpClient.close(); return responseContent; } /** * post请求 发送json格式的报文 StringEntity * @param url * @param jsonString * @return */ public static String doHttpsPost(String url, String jsonString) { if (StringUtils.isBlank(url)) { return null; } try { HttpPost httpPost = new HttpPost(url); StringEntity stringEntity = new StringEntity(jsonString, "utf-8"); stringEntity.setContentType("application/json"); httpPost.setEntity(stringEntity); CloseableHttpResponse response = httpClient.execute(httpPost); int statusCode = response.getStatusLine().getStatusCode(); if (statusCode != 200) { httpPost.abort(); throw new RuntimeException("HttpClient is error status code :" + statusCode); } HttpEntity entity = response.getEntity(); String result = null; if (entity != null) { result = EntityUtils.toString(entity, "utf-8"); } EntityUtils.consume(entity); response.close(); return result; } catch (Exception e) { e.printStackTrace(); } return null; } }