httpclient工具类

import org.apache.log4j.Logger;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLSession;
import java.io.*;
import java.net.*;
import java.util.Map;

/**
 * 描述:HTTPS接口调用工具 <br>
 * 日期:2017-4-26 <br>
 */
public class HttpClient {
	
	private static final Logger log = Logger.getLogger(HttpClient.class);
	
	private URL url;
	private int connectionTimeout;
	private int readTimeOut;
	private String result;

	public String getResult() {
		return this.result;
	}

	public void setResult(String result) {
		this.result = result;
	}

	public HttpClient(String url, int connectionTimeout, int readTimeOut) {
		try {
			this.url = new URL(url);
			this.connectionTimeout = connectionTimeout;
			this.readTimeOut = readTimeOut;
		} catch (MalformedURLException e) {
			e.printStackTrace();
		}
	}

	/**
	 * 功能:调用接口<br>
	 * 作者:zhq<br>
	 * 日期:2017-4-26<br>
	 * @param data
	 * @param encoding
	 * @return
	 * 修改：<br>
	 */
	public int send(Map<String, String> data, String encoding) throws Exception {
		try {
			HttpURLConnection httpURLConnection = createConnection(encoding);
			if (null == httpURLConnection) {
				throw new Exception("创建联接失败");
			}
			requestServer(httpURLConnection, getRequestParamString(data, encoding), encoding);
			this.result = response(httpURLConnection, encoding);
			return httpURLConnection.getResponseCode();
		} catch (Exception e) {
			throw e;
		}
	}

	private void requestServer(URLConnection connection, String message, String encoder) throws Exception {
		PrintStream out = null;
		try {
			connection.connect();
			out = new PrintStream(connection.getOutputStream(), false, encoder);
			out.print(message);
			out.flush();

			if (null != out)
				out.close();
		} catch (Exception e) {
			throw e;
		} finally {
			if (null != out)
				out.close();
		}
	}

	private String response(HttpURLConnection connection, String encoding) throws URISyntaxException, IOException, Exception {
		InputStream in = null;
		StringBuilder sb = new StringBuilder(1024);
		BufferedReader br = null;
		String temp = null;
		try {
			if (200 == connection.getResponseCode()) {
				in = connection.getInputStream();
				br = new BufferedReader(new InputStreamReader(in, encoding));
				while (null != (temp = br.readLine())) {
					sb.append(temp);
				}
			} else {
				try {
					in = connection.getErrorStream();
					br = new BufferedReader(new InputStreamReader(in, encoding));
					while (null != (temp = br.readLine())) {
						sb.append(temp);
					}
				} catch(Exception e){
					log.error("处理报错信息异常", e);
				}
			}
			String str1 = sb.toString();
			return str1;
		} catch (Exception e) {
			throw e;
		} finally {
			if (null != br) {
				br.close();
			}
			if (null != in) {
				in.close();
			}
			if (null != connection)
				connection.disconnect();
		}
	}

	private HttpURLConnection createConnection(String encoding) throws ProtocolException {
		HttpURLConnection httpURLConnection = null;
		try {
			httpURLConnection = (HttpURLConnection) this.url.openConnection();
		} catch (IOException e) {
			e.printStackTrace();
			return null;
		}
		httpURLConnection.setConnectTimeout(this.connectionTimeout);// 连接超时时间
		httpURLConnection.setReadTimeout(this.readTimeOut);// 读取结果超时时间
		httpURLConnection.setDoInput(true); // 可读
		httpURLConnection.setDoOutput(true); // 可写
		httpURLConnection.setUseCaches(false);;// 取消缓存
		httpURLConnection.setRequestProperty("Content-type", "application/x-www-form-urlencoded;charset=" + encoding);

		httpURLConnection.setRequestMethod("POST");
//		if ("https".equalsIgnoreCase(url.getProtocol())) {
//			HttpsURLConnection husn = (HttpsURLConnection) httpURLConnection;
//			//是否验证https证书，测试环境请设置false，生产环境建议优先尝试true，不行再false
////			if(!SDKConfig.getConfig().isIfValidateRemoteCert()){
//				husn.setSSLSocketFactory(new BaseHttpSSLSocketFactory());
//				husn.setHostnameVerifier(new BaseHttpSSLSocketFactory.TrustAnyHostnameVerifier());//解决由于服务器证书问题导致HTTPS无法访问的情况
////			}
//			return husn;
//		}
		if ("https".equalsIgnoreCase(this.url.getProtocol())) {
			HttpsURLConnection husn = (HttpsURLConnection) httpURLConnection;
			husn.setSSLSocketFactory(new com.unionpay.mpi.BaseHttpSSLSocketFactory());
			husn.setHostnameVerifier(new com.unionpay.mpi.BaseHttpSSLSocketFactory.TrustAnyHostnameVerifier(){
				@Override
				public boolean verify(String hostname, SSLSession session) {
					return false;
				}
			});
			return husn;
		}
//		httpURLConnection.setRequestProperty("Content-type", new StringBuilder().append("application/json;charset=").append(encoding).toString());
//		if ("https".equalsIgnoreCase(this.url.getProtocol())) {
//			HttpsURLConnection husn = (HttpsURLConnection) httpURLConnection;
//			husn.setSSLSocketFactory(new BaseHttpSSLSocketFactory());
//			husn.setHostnameVerifier(new BaseHttpSSLSocketFactory.TrustAnyHostnameVerifier());
//			return husn;
//		}
//		httpURLConnection.setRequestProperty("Content-type",
//				"application/x-www-form-urlencoded;charset=" + encoding);
//		httpURLConnection.setRequestMethod("GET");

		return httpURLConnection;
	}

	
	private String getRequestParamString(Map<String, String> requestParam, String coder)
	  {
	    if ((null == coder) || ("".equals(coder))) {
	      coder = "UTF-8";
	    }
	    StringBuffer sf = new StringBuffer("");
	    String reqstr = "";
	    if ((null != requestParam) && (0 != requestParam.size())) {
	      for (Map.Entry en : requestParam.entrySet()) {
	        try {
	          sf.append(new StringBuilder().append((String)en.getKey()).append("=").append((null == en.getValue()) || ("".equals(en.getValue())) ? "" : URLEncoder.encode((String)en.getValue(), coder)).append("&").toString());
	        }
	        catch (Exception e)
	        {
	          e.printStackTrace();
	          return "";
	        }
	      }
	      reqstr = sf.substring(0, sf.length() - 1);
	    }
	    return reqstr;
	  }
}