轻松把玩HttpClient之配置ssl,采用绕过证书验证实现https
Posted MokeyChan
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上篇文章说道httpclient不能直接访问https的资源,这次就来模拟一下环境,然后配置https测试一下。在前面的文章中,分享了一篇自己生成并在tomcat中配置ssl的文章《Tomcat配置SSL》,大家可以据此来在本地配置https。我已经配置好了,效果是这样滴:
可以看到已经信任该证书(显示浅绿色小锁),浏览器可以正常访问。现在我们用代码测试一下:
- public static void main(String[] args) throws ParseException, IOException, KeyManagementException, NoSuchAlgorithmException, HttpProcessException {
- String url = "https://sso.tgb.com:8443/cas/login";
- String body = send(url, null, "utf-8");
- System.out.println("交易响应结果:");
- System.out.println(body);
- System.out.println("-----------------------------------");
- }
发现抛出了异常,我知道的有两种方案(也许还有我不知道的方案),这里介绍第一种方案,也是用的比较多的方案——绕过证书验证。直接看代码吧:
- /**
- * 绕过验证
- *
- * @return
- * @throws NoSuchAlgorithmException
- * @throws KeyManagementException
- */
- public static SSLContext createIgnoreVerifySSL() throws NoSuchAlgorithmException, KeyManagementException {
- SSLContext sc = SSLContext.getInstance("SSLv3");
- // 实现一个X509TrustManager接口,用于绕过验证,不用修改里面的方法
- X509TrustManager trustManager = new X509TrustManager() {
- @Override
- public void checkClientTrusted(
- java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
- String paramString) throws CertificateException {
- }
- @Override
- public void checkServerTrusted(
- java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
- String paramString) throws CertificateException {
- }
- @Override
- public java.security.cert.X509Certificate[] getAcceptedIssuers() {
- return null;
- }
- };
- sc.init(null, new TrustManager[] { trustManager }, null);
- return sc;
- }
然后修改原来的send方法:
- /**
- * 模拟请求
- *
- * @param url 资源地址
- * @param map 参数列表
- * @param encoding 编码
- * @return
- * @throws NoSuchAlgorithmException
- * @throws KeyManagementException
- * @throws IOException
- * @throws ClientProtocolException
- */
- public static String send(String url, Map<String,String> map,String encoding) throws KeyManagementException, NoSuchAlgorithmException, ClientProtocolException, IOException {
- String body = "";
- //采用绕过验证的方式处理https请求
- SSLContext sslcontext = createIgnoreVerifySSL();
- // 设置协议http和https对应的处理socket链接工厂的对象
- Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
- .register("http", PlainConnectionSocketFactory.INSTANCE)
- .register("https", new SSLConnectionSocketFactory(sslcontext))
- .build();
- PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
- HttpClients.custom().setConnectionManager(connManager);
- //创建自定义的httpclient对象
- CloseableHttpClient client = HttpClients.custom().setConnectionManager(connManager).build();
- / CloseableHttpClient client = HttpClients.createDefault();
- //创建post方式请求对象
- HttpPost httpPost = new HttpPost(url);
- //装填参数
- List<NameValuePair> nvps = new ArrayList<NameValuePair>();
- if(map!=null){
- for (Entry<String, String> entry : map.entrySet()) {
- nvps.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
- }
- }
- //设置参数到请求对象中
- httpPost.setEntity(new UrlEncodedFormEntity(nvps, encoding));
- System.out.println("请求地址:"+url);
- System.out.println("请求参数:"+nvps.toString());
- //设置header信息
- //指定报文头【Content-type】、【User-Agent】
- httpPost.setHeader("Content-type", "application/x-www-form-urlencoded");
- httpPost.setHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
- //执行请求操作,并拿到结果(同步阻塞)
- CloseableHttpResponse response = client.execute(httpPost);
- //获取结果实体
- HttpEntity entity = response.getEntity();
- if (entity != null) {
- //按指定编码转换结果实体为String类型
- body = EntityUtils.toString(entity, encoding);
- }
- EntityUtils.consume(entity);
- //释放链接
- response.close();
- return body;
- }
现在再进行测试,发现果然通了。
下篇介绍另一种方案,应对自己生成的证书,敬请期待。
转自 http://blog.csdn.net/xiaoxian8023
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