依赖jsoup-1.8.2.jar
               <dependency>
      <groupId>org.jsoup</groupId>
      <artifactId>jsoup</artifactId>
      <version>1.8.2</version>
    </dependency> </div>

 

[Java]代码    

import org.apache.commons.lang3.StringUtils;  import org.apache.http.HttpStatus;  import org.jsoup.Connection;  import org.jsoup.Jsoup;  import org.jsoup.Connection.Response;    import javax.net.ssl.*;  import java.io.File;  import java.io.FileInputStream;  import java.io.FileNotFoundException;  import java.io.IOException;  import java.security.SecureRandom;  import java.security.cert.CertificateException;  import java.security.cert.X509Certificate;  import java.util.HashMap;  import java.util.Map;    /**   * Created by Jane on 2015/9/10.   */  public class JsoupHttpRequest {        public static void main(String[] args) throws Exception {          String url = "http://localhost:8080/fileUpload";          File file = new File("/opt/fileUpload/index.jpg");          String fileRquestParam = "file";          Map<String, String> dataMap = new HashMap<String, String>();          dataMap.put("userName", "admin");          dataMap.put("md5", "12cd76nskju98zud7fda0f6c9wa54");          Response response = doPostFileRequest(url, dataMap, file, fileRquestParam);          System.out.println(response.statusMessage());      }        /**       * @param url              请求的Url       * @param paramMap         参数       * @param file             文件       * @param fileRequestParam form表单对应的文件name属性名       * @return       * @throws Exception       */      public static Response doPostFileRequest(String url, Map<String, String> paramMap, File file, String fileRequestParam) throws Exception {          if (StringUtils.isBlank(url)) {              throw new Exception("The request URL is blank.");          }          // Https请求          if (StringUtils.startsWith(url, "https")) {              trustEveryone();          }          Connection connection = Jsoup.connect(url);          connection.method(Connection.Method.POST);          connection.timeout(12000);          connection.header("Content-Type", "multipart/form-data");          connection.ignoreHttpErrors(true);          connection.ignoreContentType(true);          if (paramMap != null && !paramMap.isEmpty()) {              connection.data(paramMap);          }          try {              FileInputStream fis = new FileInputStream(file);              connection.data(fileRequestParam, file.getName(), fis);          } catch (FileNotFoundException e) {              e.printStackTrace();          }          try {              Response response = connection.execute();              if (response.statusCode() != HttpStatus.SC_OK) {                  throw new Exception("http请求响应码:" + response.statusCode() + "");              }              return response;          } catch (IOException e) {              e.printStackTrace();          }          return null;      }        /**       * 解决Https请求,返回404错误       */      private static void trustEveryone() {          try {              HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {                    public boolean verify(String hostname, SSLSession session) {                      return true;                  }              });              SSLContext context = SSLContext.getInstance("TLS");              context.init(null, new X509TrustManager[]{new X509TrustManager() {                    public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {                  }                    public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {                  }                    public X509Certificate[] getAcceptedIssuers() {                      return new X509Certificate[0];                  }              }}, new SecureRandom());              HttpsURLConnection.setDefaultSSLSocketFactory(context.getSocketFactory());          } catch (Exception e) {              e.printStackTrace();          }      }  }