java原生API发送https请求

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一、原生API依赖引用

注意不要引用错误，否则会引发诡异错误。

import javax.net.ssl.HttpsURLConnection;import javax.net.ssl.SSLContext;import javax.net.ssl.SSLSocketFactory;import javax.net.ssl.TrustManager;import sun.net.www.protocol.https.Handler;

二、自定义TrainX509TrustManager

import java.security.cert.CertificateException;import java.security.cert.X509Certificate;import javax.net.ssl.X509TrustManager;public class TrainX509TrustManager 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;      }  }

三、示例代码

public String readURLByHttpsGet(String url, String charset) throws Exception {        //发送https前的准备工作        TrustManager[] tm = { new TrainX509TrustManager() };            SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");            sslContext.init(null, tm, new java.security.SecureRandom());               SSLSocketFactory ssf = sslContext.getSocketFactory();            String content = "";        // 尝试连10次        boolean suc = false ;        for (int i = 0; i < 10; i++) {            try {//              URL net = new URL(url);//此法会抛异常                URL net = new URL(null,url,new Handler());//重要，必须要传入new Handler()，否则会抛异常                InputStream in = null;                HttpsURLConnection conn = (HttpsURLConnection) net.openConnection();//重要                conn.setSSLSocketFactory(ssf);//重要                conn.setConnectTimeout(60000);                conn.setReadTimeout(60000);                in = conn.getInputStream();                BufferedReader br = new BufferedReader(new InputStreamReader(in, charset));                StringBuffer sb = new StringBuffer();                int ch;                while ((ch = br.read()) != -1) {                    sb.append((char) ch);                }                in.close();                content = sb.toString();                suc = true;                break;            } catch (Exception e) {                e.printStackTrace();                if (i == 9) {                    break;                }                continue;            }        }        if(!suc){            throw new Exception("读取 失败:"+url) ;        }        return content;    }

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