linwe
2024-09-03 764d883b5ea3bdc06abbec548b6df0511e567978
src/main/java/org/springblade/common/utils/HttpClientUtils.java
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package org.springblade.common.utils;
import com.alibaba.fastjson.JSON;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.*;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.ssl.SSLContextBuilder;
import org.apache.http.util.EntityUtils;
import sun.misc.BASE64Encoder;
import javax.net.ssl.SSLContext;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.*;
public class HttpClientUtils {
   /**
    * 执行有参GET请求
    *
    * @param url
    * @param params
    * @return
    */
   public static String doGet(String url, Map<String, String> params) {
//获取httpclient客户端
      CloseableHttpClient httpclient = HttpClients.createDefault();
      String resultString = "";
      CloseableHttpResponse response = null;
      try {
         URIBuilder builder = new URIBuilder(url);
         if (null != params) {
            for (String key : params.keySet()) {
               builder.setParameter(key, params.get(key));
            }
         }
         HttpGet get = new HttpGet(builder.build());
         response = httpclient.execute(get);
         System.out.println(response.getStatusLine());
         if (200 == response.getStatusLine().getStatusCode()) {
            HttpEntity entity = response.getEntity();
            resultString = EntityUtils.toString(entity, "utf-8");
         }
      } catch (Exception e) {
         e.printStackTrace();
      } finally {
         if (null != response) {
            try {
               response.close();
            } catch (IOException e) {
               e.printStackTrace();
            }
         }
         if (null != httpclient) {
            try {
               httpclient.close();
            } catch (IOException e) {
               e.printStackTrace();
            }
         }
      }
      return resultString;
   }
   /**
    * 执行有参GET请求,带请求头
    *
    * @param url       请求url
    * @param params    参数
    * @param key       请求头Key
    * @param secretKey 秘钥
    * @return
    */
   public static String doGetHeader(String url, String key, String secretKey, Map<String, String> params) {
//获取httpclient客户端
      CloseableHttpClient httpclient = HttpClients.createDefault();
      String resultString = "";
      CloseableHttpResponse response = null;
      try {
         URIBuilder builder = new URIBuilder(url);
         if (null != params) {
            for (String keys : params.keySet()) {
               builder.addParameter(keys, params.get(keys));
//builder.setParameter(keys, params.get(keys));
            }
         }
         HttpGet httpGet = new HttpGet(builder.build());
//设置请求头
         httpGet.addHeader(key, secretKey);
// 传输的类型
         httpGet.addHeader("Content-Type", "application/x-www-form-urlencoded");
//执行Http请求调用
         response = httpclient.execute(httpGet);
//判断是否请求成功返回
         if (200 == response.getStatusLine().getStatusCode()) {
            HttpEntity entity = response.getEntity();
            resultString = EntityUtils.toString(entity, "utf-8");
         }
      } catch (Exception e) {
         e.printStackTrace();
      } finally {
         if (null != response) {
            try {
               response.close();
            } catch (IOException e) {
               e.printStackTrace();
            }
         }
         if (null != httpclient) {
            try {
               httpclient.close();
            } catch (IOException e) {
               e.printStackTrace();
            }
         }
      }
      return resultString;
   }
   /**
    * 执行有参GET请求,带请求头,接收图片流
    *
    * @param url       请求url
    * @param params    参数
    * @param key       请求头Key
    * @param secretKey 秘钥
    * @return
    */
   public static String doGetHeaderPictureBase64(String url, String key, String secretKey, Map<String, String> params) {
//获取httpclient客户端
      CloseableHttpClient httpclient = HttpClients.createDefault();
      String resultString = "";
      CloseableHttpResponse response = null;
      try {
         URIBuilder builder = new URIBuilder(url);
         if (null != params) {
            for (String keys : params.keySet()) {
               builder.addParameter(keys, params.get(keys));
            }
         }
         HttpGet httpGet = new HttpGet(builder.build());
//设置请求头
         httpGet.addHeader(key, secretKey);
// 传输的类型
         httpGet.addHeader("Content-Type", "application/x-www-form-urlencoded");
//执行Http请求调用
         response = httpclient.execute(httpGet);
// 将返回的图片或者文件转化成字节数组的形式
         byte[] data = EntityUtils.toByteArray(response.getEntity());
         BASE64Encoder encoder = new BASE64Encoder();
//String imageBase64 = "data:image/png;base64," + encoder.encodeBuffer(data).trim();
         return encoder.encodeBuffer(data).trim().replaceAll("\n", "").replaceAll("\r", "").replaceAll(" ", "");//删除 \r\n
      } catch (Exception e) {
         e.printStackTrace();
      } finally {
         if (null != response) {
            try {
               response.close();
            } catch (IOException e) {
               e.printStackTrace();
            }
         }
         if (null != httpclient) {
            try {
               httpclient.close();
            } catch (IOException e) {
               e.printStackTrace();
            }
         }
      }
      return resultString;
   }
   /**
    * 执行无参GET请求
    *
    * @param url
    * @return
    */
   public static String doGet(String url) {
      return doGet(url, null);
   }
   /**
    * 执行有参POST请求
    *
    * @param url
    * @param params
    * @return
    */
   public static String doPost(String url, Map<String, String> params) {
/**
 * 在4.0及以上httpclient版本中,post需要指定重定向的策略,如果不指定则按默认的重定向策略。
 *
 * 获取httpclient客户端
 */
      CloseableHttpClient httpclient = HttpClientBuilder.create().setRedirectStrategy(new LaxRedirectStrategy()).build();
      String resultString = "";
      CloseableHttpResponse response = null;
      try {
         HttpPost post = new HttpPost(url);
         List<NameValuePair> paramaters = new ArrayList<>();
         if (null != params) {
            for (String key : params.keySet()) {
               paramaters.add(new BasicNameValuePair(key, params.get(key)));
            }
// 构造一个form表单式的实体
            UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(paramaters);
// 将请求实体设置到httpPost对象中
            post.setEntity(formEntity);
         }
/**
 * HTTP/1.1 403 Forbidden
 *   原因:
 *      有些网站,设置了反爬虫机制
 *   解决的办法:
 *      设置请求头,伪装浏览器
 */
         post.addHeader("user-agent", "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36");
         response = httpclient.execute(post);
         System.out.println(response.getStatusLine());
         if (200 == response.getStatusLine().getStatusCode()) {
            HttpEntity entity = response.getEntity();
            resultString = EntityUtils.toString(entity, "utf-8");
         }
      } catch (Exception e) {
         e.printStackTrace();
      } finally {
         if (null != response) {
            try {
               response.close();
            } catch (IOException e) {
               e.printStackTrace();
            }
         }
         if (null != httpclient) {
            try {
               httpclient.close();
            } catch (IOException e) {
               e.printStackTrace();
            }
         }
      }
      return resultString;
   }
   public static String doPost(String url) {
      return doPost(url, null);
   }
   public static void main(String[] args) {
      Map<String, String> params = new HashMap<>();
      params.put("scope", "project");
      params.put("q", "数据库");
//
//    System.out.println(doGet("http://www.baidu.com/s",params));
      /**
       * 有一部分网站,禁止爬虫技术访问网站。
       *
       * 解决方案:
       *    伪装浏览器
       *    post.addHeader("user-agent", "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36");
       */
      System.out.println(doPost("http://www.oschina.net/search", params));
   }
   /**
    * post 请求 header 带 秘钥
    *
    * @param url
    * @param appKey
    * @param appKeyValue
    * @param map
    * @return
    */
   public static String httpPost(String url, String appKey, String appKeyValue, Map<String, String> map) {
// 返回body
      String body = null;
// 获取连接客户端工具
      CloseableHttpClient httpClient = HttpClients.createDefault();
      CloseableHttpResponse httpResponse = null;
// 2、创建一个HttpPost请求
      HttpPost post = new HttpPost(url);
// 5、设置header信息
      /**header中通用属性*/
//        post.setHeader("Accept", "*/*");
//        post.setHeader("Accept-Encoding", "gzip, deflate");
//        post.setHeader("Cache-Control", "no-cache");
//        post.setHeader("Connection", "keep-alive");
      post.setHeader("Content-Type", "application/json;charset=UTF-8");
/**业务参数*/
      post.setHeader(appKey, appKeyValue);
// 设置参数
      if (map != null) {
         try {
            StringEntity entity1 = new StringEntity(JSON.toJSONString(map), "UTF-8");
            entity1.setContentEncoding("UTF-8");
            entity1.setContentType("json/form-data");
            post.setEntity(entity1);
// 7、执行post请求操作,并拿到结果
            httpResponse = httpClient.execute(post);
// 获取结果实体
            HttpEntity entity = httpResponse.getEntity();
            if (entity != null) {
// 按指定编码转换结果实体为String类型
               body = EntityUtils.toString(entity, "UTF-8");
            }
            try {
               httpResponse.close();
               httpClient.close();
            } catch (IOException e) {
               e.printStackTrace();
            }
         } catch (Exception e) {
            e.printStackTrace();
         }
      }
      return body;
   }
   public static SSLContext createIgnoreVerifySSL() throws KeyManagementException, NoSuchAlgorithmException, KeyStoreException {
      SSLContext sc = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
         public boolean isTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {
            return true;
         }
      }).build();
      return sc;
   }
   //适用于post请求并传送form-data数据(同样适用于post的Raw类型的application-json格式)
   public static String postParams(String url, String appKey, Map<String, String> map) {
      SSLContext sslcontext = null;
      try {
         sslcontext = createIgnoreVerifySSL();
      } catch (KeyManagementException e) {
         e.printStackTrace();
      } catch (NoSuchAlgorithmException e) {
         e.printStackTrace();
      } catch (KeyStoreException e) {
         e.printStackTrace();
      }
// 设置协议http和https对应的处理socket链接工厂的对象
      Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
         .register("http", PlainConnectionSocketFactory.INSTANCE)
         .register("https", new SSLConnectionSocketFactory(sslcontext))
         .build();
      PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
//创建自定义的httpclient对象
      CloseableHttpClient client = HttpClients.custom().setConnectionManager(connManager).build();
      HttpPost post = new HttpPost(url);
      post.setHeader("appKey", appKey);
      CloseableHttpResponse res = null;
      try {
         List<NameValuePair> nvps = new ArrayList<NameValuePair>();
         Set<String> keySet = map.keySet();
         for (String key : keySet) {
            nvps.add(new BasicNameValuePair(key, map.get(key)));
         }
         post.setEntity(new UrlEncodedFormEntity(nvps, "utf-8"));
         res = client.execute(post);
         HttpEntity entity = res.getEntity();
         return EntityUtils.toString(entity, "utf-8");
      } catch (Exception e) {
         e.printStackTrace();
      } finally {
         try {
            res.close();
            client.close();
         } catch (IOException e) {
            e.printStackTrace();
         }
      }
      return "";
   }
   //适用于post请求并传送form-data数据(同样适用于post的Raw类型的application-json格式)
   public static String postParams(String url, Map<String, Object> map) {
      SSLContext sslcontext = null;
      try {
         sslcontext = createIgnoreVerifySSL();
      } catch (KeyManagementException e) {
         e.printStackTrace();
      } catch (NoSuchAlgorithmException e) {
         e.printStackTrace();
      } catch (KeyStoreException e) {
         e.printStackTrace();
      }
// 设置协议http和https对应的处理socket链接工厂的对象
      Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
         .register("http", PlainConnectionSocketFactory.INSTANCE)
         .register("https", new SSLConnectionSocketFactory(sslcontext))
         .build();
      PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
//创建自定义的httpclient对象
      CloseableHttpClient client = HttpClients.custom().setConnectionManager(connManager).build();
      HttpPost post = new HttpPost(url);
//      post.setHeader(appKey, appKeyValue);
      CloseableHttpResponse res = null;
      try {
         List<NameValuePair> nvps = new ArrayList<NameValuePair>();
         Set<String> keySet = map.keySet();
         for (String key : keySet) {
            nvps.add(new BasicNameValuePair(key, map.get(key).toString()));
         }
         post.setEntity(new UrlEncodedFormEntity(nvps, "utf-8"));
         res = client.execute(post);
         HttpEntity entity = res.getEntity();
         return EntityUtils.toString(entity, "utf-8");
      } catch (Exception e) {
         e.printStackTrace();
      } finally {
         try {
            res.close();
            client.close();
         } catch (IOException e) {
            e.printStackTrace();
         }
      }
      return "";
   }
   /**
    * 向指定 URL 发送POST方法的请求
    *
    * @param url    发送请求的 URL
    * @param params 请求的参数集合
    * @return 远程资源的响应结果
    */
   @SuppressWarnings("unused")
   public static String sendPost(String url, Map<String, String> params) {
      OutputStreamWriter out = null;
      BufferedReader in = null;
      StringBuilder result = new StringBuilder();
      try {
         URL realUrl = new URL(url);
         HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
// 发送POST请求必须设置如下两行
         conn.setDoOutput(true);
         conn.setDoInput(true);
// POST方法
         conn.setRequestMethod("POST");
// 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)");
         conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
         conn.connect();
// 获取URLConnection对象对应的输出流
         out = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
// 发送请求参数
         if (params != null) {
            StringBuilder param = new StringBuilder();
            for (Map.Entry<String, String> entry : params.entrySet()) {
               if (param.length() > 0) {
                  param.append("&");
               }
               param.append(entry.getKey());
               param.append("=");
               param.append(entry.getValue());
// System.out.println(entry.getKey()+":"+entry.getValue());
            }
// System.out.println("param:"+param.toString());
            out.write(param.toString());
         }
// 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(), "UTF-8"));
         String line;
         while ((line = in.readLine()) != null) {
            result.append(line);
         }
      } catch (Exception 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.toString();
   }
   /**
    * json  body
    *
    * @param url
    * @param json
    * @return
    * @throws IOException
    */
   public static String httpPostWithjson(String url, String json) throws IOException {
      String result = "";
      HttpPost httpPost = new HttpPost(url);
      CloseableHttpClient httpClient = HttpClients.createDefault();
      try {
         BasicResponseHandler handler = new BasicResponseHandler();
         //解决中文乱码问题
         StringEntity entity = new StringEntity(json, "utf-8");
         entity.setContentEncoding("UTF-8");
         entity.setContentType("application/json");
         httpPost.setEntity(entity);
         result = httpClient.execute(httpPost, handler);
         return result;
      } catch (Exception e) {
         e.printStackTrace();
      } finally {
         try {
            httpClient.close();
         } catch (Exception e) {
            e.printStackTrace();
         }
      }
      return result;
   }
}