httpclient工具类

package ***;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.URL;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.*;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


public class HttpsClient {

    protected Logger logger = LoggerFactory.getLogger(this.getClass());

    public static HttpsClient getAsyncHttpClient() {
        return HttpClientHolder.client;
    }

    private static class HttpClientHolder {//懒加载
        private static HttpsClient client = new HttpsClient();
    }

    public String get(String requestUrl) {
        StringBuffer buffer = new StringBuffer();
        try {

            // 创建SSLContext对象，并使用我们指定的信任管理器初始化
            TrustManager[] tm = {new HttpsClient.MyX509TrustManager()};
            SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
            sslContext.init(null, tm, new java.security.SecureRandom());
            // 从上述SSLContext对象中得到SSLSocketFactory对象
            SSLSocketFactory ssf = sslContext.getSocketFactory();
            // 打开连接
            URL url = new URL(requestUrl);
            HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();
            httpUrlConn.setSSLSocketFactory(ssf);
            httpUrlConn.setDoOutput(true);
            httpUrlConn.setDoInput(true);
            httpUrlConn.setUseCaches(false);
            httpUrlConn.setReadTimeout(9000);
            httpUrlConn.setConnectTimeout(7000);
            // 设置请求方式（GET/POST）
            httpUrlConn.setRequestMethod("GET");
            httpUrlConn.connect();
            // 将返回的输入流转换成字符串
            InputStream inputStream = httpUrlConn.getInputStream();
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
            String str = null;
            while ((str = bufferedReader.readLine()) != null) {
                buffer.append(str);
            }
            bufferedReader.close();
            inputStreamReader.close();
            // 释放资源
            inputStream.close();
            inputStream = null;
            httpUrlConn.disconnect();
        } catch (ConnectException ce) {
            logger.error("server connection timed out.");
        } catch (Exception e) {
            logger.error("https request error:{}", e.getMessage());
        }
        return buffer.toString();
    }


    private static class MyX509TrustManager implements X509TrustManager {
        @Override
        public void checkClientTrusted(X509Certificate[] chain, String authType)
                throws CertificateException {
        }

        @Override
        public void checkServerTrusted(X509Certificate[] chain, String authType)
                throws CertificateException {
        }

        @Override
        public X509Certificate[] getAcceptedIssuers() {
            return null;
        }
    }

    /**
     * Https post 请求
     *
     * @return
     */
    public String doPost(String urls, String param) {
        StringBuffer buffer = new StringBuffer();
        try {

            // 创建SSLContext对象，并使用我们指定的信任管理器初始化
            TrustManager[] tm = {new HttpsClient.MyX509TrustManager()};
            SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
            sslContext.init(null, tm, new java.security.SecureRandom());
            // 从上述SSLContext对象中得到SSLSocketFactory对象
            SSLSocketFactory ssf = sslContext.getSocketFactory();
            // 打开连接
            URL url = new URL(urls);
            HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();
            httpUrlConn.setSSLSocketFactory(ssf);
            httpUrlConn.setDoOutput(true);
            httpUrlConn.setDoInput(true);
            httpUrlConn.setUseCaches(false);
            httpUrlConn.setReadTimeout(9000);
            httpUrlConn.setConnectTimeout(7000);
            // 设置请求方式（GET/POST）
            httpUrlConn.setRequestMethod("POST");
            httpUrlConn.connect();

            if (null != param) {
                OutputStream outputStream = httpUrlConn.getOutputStream();
                outputStream.write(param.getBytes("utf-8"));
                outputStream.close();
            }
            // 将返回的输入流转换成字符串
            InputStream inputStream = httpUrlConn.getInputStream();
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
            String str = null;
            while ((str = bufferedReader.readLine()) != null) {
                buffer.append(str);
            }
            bufferedReader.close();
            inputStreamReader.close();
            // 释放资源
            inputStream.close();
            inputStream = null;
            httpUrlConn.disconnect();
        } catch (ConnectException ce) {
            logger.error("server connection timed out.");
        } catch (Exception e) {
            logger.error("https request error:{}", e.getMessage());
        }
        return buffer.toString();
    }
}