HttpClient进行https请求

偏执的太偏执、 2022-05-14 08:12 339阅读 0赞

并不是所有的https请求都需要按照下面的代码进行设置，如果遇到下面的问题，则需要这么做。  
`javax.net.ssl.SSLException: hostname in certificate didn't match:`

## 采用绕过验证的方式处理https请求 ##

需要指定信任所有证书，并指定不校验域名。

### DefaultHttpClient ###

代码：

public static DefaultHttpClient getHttpClient(String url, Proxy proxy)
                throws Exception {
        SSLSocketFactory sf = new SSLSocketFactory(new TrustStrategy() {
            // 信任所有
            @Override
            public boolean isTrusted(java.security.cert.X509Certificate[] x509Certificates, String s) throws java.security.cert.CertificateException {
                return true;
            }
        });
        sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
        // 连接池设置
        SchemeRegistry schemeRegistry = new SchemeRegistry();
        schemeRegistry.register(new Scheme("http", 80, PlainSocketFactory.getSocketFactory()));
        schemeRegistry.register(new Scheme("https", 443, sf));
        PoolingClientConnectionManager cm = new PoolingClientConnectionManager(schemeRegistry);
        cm.setMaxTotal(200); // 连接池里的最大连接数
        cm.setDefaultMaxPerRoute(20); // 每个路由的默认最大连接数
        // 其它设置
        DefaultHttpClient httpClient = new DefaultHttpClient(cm);
        CookieStore cookieStore = httpClient.getCookieStore();
        // 添加语言cookie
        BasicClientCookie2 langCookie = new BasicClientCookie2("LangKey", "cs");
        langCookie.setVersion(0);
        langCookie.setDomain(Utility.getPurceHost(url));
        langCookie.setPath("/");
        cookieStore.addCookie(langCookie);
        HttpRequestRetryHandler myRetryHandler = new HttpRequestRetryHandler() {
            public boolean retryRequest(IOException exception,
                                        int executionCount, HttpContext context) {
                if (executionCount >= 3) {
                    // 如果超过最大重试次数，那么就不要继续了
                    return false;
                }
                if (exception instanceof NoHttpResponseException) {
                    // 如果服务器丢掉了连接，那么就重试
                    return true;
                }
                if (exception instanceof SSLHandshakeException) {
                    // 不要重试SSL握手异常
                    return false;
                }
                HttpRequest request = (HttpRequest) context
                        .getAttribute(ExecutionContext.HTTP_REQUEST);
                boolean idempotent = !(request instanceof HttpEntityEnclosingRequest);
                if (idempotent) {
                    // 如果请求被认为是幂等的，那么就重试
                    return true;
                }
                return false;
            }
        };
        httpClient.setHttpRequestRetryHandler(myRetryHandler);
        // 设置读取超时时间
        httpClient.getParams().setIntParameter("http.socket.timeout",
                SnatchConstant.TIMEOUT);
        // 设置连接超时超时
        httpClient.getParams()
                .setIntParameter(HttpConnectionParams.CONNECTION_TIMEOUT,
                        SnatchConstant.TIMEOUT);
        // 添加代理
        if (null != proxy) {
            if (proxy.getUsed() == 1) {
                String ip = proxy.getIp();// 代理ip
                int port = proxy.getPort();// 代理端口
                String proxyUserName = proxy.getUsername();// 代理账号用户名
                String proxyPassword = proxy.getPassword();// 代理账号密码
                if (!(Utility.isNull(ip) || port <= 0)) {
                    // 访问的目标站点，端口和协议
                    httpClient.getCredentialsProvider().setCredentials(
                            new AuthScope(ip, port),
                            new UsernamePasswordCredentials(proxyUserName,
                                    proxyPassword));
                    // 代理的设置
                    HttpHost proxyHost = new HttpHost(ip, port);
                    httpClient.getParams().setParameter(
                            ConnRoutePNames.DEFAULT_PROXY, proxyHost);
                }
            }
        }
        return httpClient;
    }

### CloseableHttpClient ###

如果是CloseableHttpClient，可以使用下面的代码：

public static CloseableHttpClient createSSLClientDefault(String url, Proxy proxy){
        try {
            CookieStore cookieStore = new BasicCookieStore();
            // 添加语言cookie
            BasicClientCookie2 langCookie = new BasicClientCookie2("LangKey", "cs");
            langCookie.setVersion(0);
            langCookie.setDomain(Utility.getPurceHost(url));
            langCookie.setPath("/");
            cookieStore.addCookie(langCookie);
            RequestConfig config = null;
            if (config == null) {
                config = RequestConfig.custom().setConnectTimeout(SnatchConstant.TIMEOUT).setSocketTimeout(SnatchConstant.TIMEOUT).build();
            }
            SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
                //信任所有
                @Override
                public boolean isTrusted(java.security.cert.X509Certificate[] x509Certificates, String s) throws java.security.cert.CertificateException {
                    return true;
                }
            }).build();
            SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext);
            return HttpClients.custom().setSSLSocketFactory(sslsf).setDefaultCookieStore(cookieStore).setDefaultRequestConfig(config).setRetryHandler((new HttpRequestRetryHandler() {
                @Override
                public boolean retryRequest(IOException exception, int executionCount, HttpContext context) {
                    if (executionCount >= 3) {
                        // 如果超过最大重试次数，那么就不要继续了
                        return false;
                    }
                    if (exception instanceof NoHttpResponseException) {
                        // 如果服务器丢掉了连接，那么就重试
                        return true;
                    }
                    if (exception instanceof SSLHandshakeException) {
                        // 不要重试SSL握手异常
                        return false;
                    }
                    HttpRequest request = (HttpRequest) context.getAttribute(ExecutionContext.HTTP_REQUEST);
                    boolean idempotent = !(request instanceof HttpEntityEnclosingRequest);
                    if (idempotent) {
                        // 如果请求被认为是幂等的，那么就重试
                        return true;
                    }
                    return false;
                }
            })).build();
        } catch (KeyManagementException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (KeyStoreException e) {
            e.printStackTrace();
        }
        return  HttpClients.createDefault();
    }

参考：[轻松把玩HttpClient之配置ssl，采用绕过证书验证实现https][HttpClient_ssl_https]

## 加载证书来访问HTTPS网站 ##

### DefaultHttpClient ###

DefaultHttpClient hc = new DefaultHttpClient();
    //加载证书 
    java.security.KeyStore trustStore = java.security.KeyStore.getInstance(java.security.KeyStore.getDefaultType());  
    //"123456"为制作证书时的密码 
    trustStore.load(new FileInputStream(new File("你的证书位置")), "123456".toCharArray());  
    org.apache.http.conn.ssl.SSLSocketFactory socketFactory = new org.apache.http.conn.ssl.SSLSocketFactory(trustStore);  
    //不校验域名 
    socketFactory.setHostnameVerifier(org.apache.http.conn.ssl.SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);  
    //这个8446是和被访问端约定的端口，一般为443 
    org.apache.http.conn.scheme.Scheme sch = new org.apache.http.conn.scheme.Scheme("https", socketFactory, 8446);  
    hc.getConnectionManager().getSchemeRegistry().register(sch);

参考：[http://blog.csdn.net/wangshfa/article/details/9059089][http_blog.csdn.net_wangshfa_article_details_9059089]

### CloseableHttpClient ###

KeyStore trustStore  = KeyStore.getInstance(KeyStore.getDefaultType());  
    //加载证书文件 
    FileInputStream instream = new FileInputStream(new File("/home/victor/my.store"));  
    try {  
       trustStore.load(instream, "mypassword".toCharArray());  
    } finally {  
       instream.close();  
    }  
    SSLContext sslcontext = SSLContexts.custom().loadTrustMaterial(trustStore).build();  
    SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslcontext,  
           SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER);  
    CloseableHttpClient httpclient = HttpClients.custom()  
           .setSSLSocketFactory(sslsf)  
           .build();

参考：[http://blog.csdn.net/wanglha/article/details/51140846][http_blog.csdn.net_wanglha_article_details_51140846]

[HttpClient_ssl_https]: http://blog.csdn.net/klzyf100/article/details/78873222
[http_blog.csdn.net_wangshfa_article_details_9059089]: http://blog.csdn.net/wangshfa/article/details/9059089
[http_blog.csdn.net_wanglha_article_details_51140846]: http://blog.csdn.net/wanglha/article/details/51140846