https Java SSL Exception protocol_version

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 在java代码中，使用HttpClient爬取https页面时，遇到了这个bug：javax.net.ssl.SSLException: Received fatal alert: protocol_version 
 先奉上初始的代码：
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 <pre class="blockcode"> 1 /**
 2 *
 3 */
 4 package com.tcl.mibc.weathercrawler;
 5
 6 import org.apache.http.HttpEntity;
 7 import org.apache.http.HttpException;
 8 import org.apache.http.HttpResponse;
 9 import org.apache.http.client.HttpClient;
10 import org.apache.http.client.methods.HttpGet;
11 import org.apache.http.client.methods.HttpRequestBase;
12 import org.apache.http.impl.client.HttpClients;
13 import org.apache.http.protocol.BasicHttpContext;
14 import org.apache.http.protocol.HttpContext;
15 import org.apache.http.util.EntityUtils;
16
17 /**
18 * @author yanzhou
19 *
20 */
21 public class PageOld {
22
23 /**
24 * @param args
25 */
26 public static void main(String[] args) {
27 System.setProperty("javax.net.debug", "all");
28 String url = "https://www.timeanddate.com/weather/";
29 HttpClient client = HttpClients.createDefault();
30 HttpRequestBase http = new HttpGet(url);
31 HttpContext context = new BasicHttpContext();
32 try {
33 HttpResponse response = client.execute(http, context);
34 int statusCode = response.getStatusLine().getStatusCode();
35
36 switch (statusCode) {
37 case 200:
38 case 400:// 业务异常
39 break;
40 default