JDK版本不同引发的https请求证书问题

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问题解决

问题描述

首先,服务器上跑着一个接口工程,环境是jdk8,为https请求(证书认证,但这里绕过了证书);客户端通过https调用接口,环境是jdk7,请求时报如下错:

javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure

问题分析

这个问题出现的原因是因为开发时,我客户端用的jdk8测试,没有出现问题,然后客户那是jdk7,所以出现了这个问题,这是由于客户端与服务器所使用的SSL/TLS版本不一致。服务器使用的TLS版本高,而客户端支持的TLS版本低。Java 8默认支持TLSv1.2版本

解决过程

这里有两种解决办法

  1. 客户端升级为jdk8(让客户改不怎么现实,这种方法先pass)
  2. 构造证书new SSLConnectionSocketFactory对象时加上两个属性

*这里说下第二种解决方法,下面 SSLConnectionSocketFactory 上的注释 *
get请求

/**
 * get请求
 * @param url
 * @param timeout 超时时间(毫秒)
 * @param user
 * @param code
 * @return
 */
public static String doGet(String url, int timeout, String user, String code) {
	try {
		CloseableHttpClient client = null;

		/* 相信自己的CA和所有自签名的证书 */
		SSLContext sslcontext = SSLContexts.custom().loadTrustMaterial(new TrustSelfSignedStrategy()).build();

		/* 不做证书校验 */
		sslcontext.init(null, new TrustManager[] { truseAllManager }, null);

		/* 添加两个属性 new String[]{"TLSv1.2"} 和 null */
		SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslcontext,new String[]{"TLSv1.2"}, null, new HostnameVerifier() {
			@Override
			public boolean verify(String hostname, SSLSession session) {
				return true;
			}
		});
		
		client = HttpClients.custom().setSSLSocketFactory(sslsf).build();

		//发送get请求
		HttpGet request = new HttpGet(url);
		request.setHeader("Content-Type", "application/json;charset=UTF-8");
		RequestConfig requestConfig = RequestConfig.custom()
				.setConnectTimeout(timeout)
				.setSocketTimeout(timeout).build();
		request.setConfig(requestConfig);
		HttpResponse response = client.execute(request);

		/**读取服务器返回过来的json字符串数据**/
		String strResult = EntityUtils.toString(response.getEntity());
		return strResult;
	}catch (Exception e) {
		e.printStackTrace();
	}
	return null;
}

post请求

/**
 * post请求(用于请求json格式的参数)
 * @param url 请求路径
 * @param params 请求参数
 * @param user 用户
 * @param code 秘钥
 * @return
 * @throws Exception
 */
public static String doPost(String url, String params, String user, String code) throws Exception {

	CloseableHttpClient httpclient = null;

	/* 相信自己的CA和所有自签名的证书 */
	SSLContext sslcontext = SSLContexts.custom().loadTrustMaterial(new TrustSelfSignedStrategy()).build();

	/* 不做证书校验 */
	sslcontext.init(null, new TrustManager[] { truseAllManager }, null);
	
	/* 添加两个属性 new String[]{"TLSv1.2"} 和 null */
	SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslcontext,new String[]{"TLSv1.2"}, null, new HostnameVerifier() {
		@Override
		public boolean verify(String hostname, SSLSession session) {
			return true;
		}
	});

	httpclient = HttpClients.custom().setSSLSocketFactory(sslsf).build();
	HttpPost httpPost = new HttpPost(url);// 创建httpPost
	httpPost.setHeader("Content-Type", "application/json;charset=UTF-8");
	String charSet = "UTF-8";
	StringEntity entity = new StringEntity(params, charSet);
	httpPost.setEntity(entity);
	CloseableHttpResponse response = null;
	try {

		response = httpclient.execute(httpPost);
			HttpEntity responseEntity = response.getEntity();
			String jsonString = EntityUtils.toString(responseEntity);
			return jsonString;
	}
	finally {
		if (response != null) {
			try {
				response.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		try {
			httpclient.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}

如果这里不能解决您的问题请参考如下链接

链接1链接2

posted @ 2018-10-25 12:11  charmsongo  阅读(855)  评论(0编辑  收藏  举报