如何使用RestTemplate访问https实现SSL请求操作

这篇文章主要介绍了如何使用RestTemplate访问https实现SSL请求操作，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。

1、添加HttpsClientRequestFactory工具类

import org.springframework.http.client.SimpleClientHttpRequestFactory;import javax.net.ssl.*;import java.io.IOException;import java.net.HttpURLConnection;import java.net.InetAddress;import java.net.Socket;import java.security.cert.X509Certificate; /** * TLS的三个作用： *    （1）身份认证 *            通过证书认证来确认对方的身份，防止中间人攻击 *    （2）数据私密性 *            使用对称性密钥加密传输的数据，由于密钥只有客户端/服务端有，其他人无法窥探。 *    （3）数据完整性 *            使用摘要算法对报文进行计算，收到消息后校验该值防止数据被篡改或丢失。 *      *     使用RestTemplate进行HTTPS请求访问： *    private static RestTemplate restTemplate = new RestTemplate(new HttpsClientRequestFactory()); *  */public class HttpsClientRequestFactory extends SimpleClientHttpRequestFactory {    @Override    protected void prepareConnection(HttpURLConnection connection, String httpMethod) {        try {            if (!(connection instanceof HttpsURLConnection)) {                throw new RuntimeException("An instance of HttpsURLConnection is expected");            }             HttpsURLConnection httpsConnection = (HttpsURLConnection) connection;             TrustManager[] trustAllCerts = new TrustManager[]{                    new X509TrustManager() {                        @Override                        public java.security.cert.X509Certificate[] getAcceptedIssuers() {                            return null;                        }                        @Override                        public void checkClientTrusted(X509Certificate[] certs, String authType) {                        }                        @Override                        public void checkServerTrusted(X509Certificate[] certs, String authType) {                        }                     }            };            SSLContext sslContext = SSLContext.getInstance("TLS");            sslContext.init(null, trustAllCerts, new java.security.SecureRandom());            httpsConnection.setSSLSocketFactory(new MyCustomSSLSocketFactory(sslContext.getSocketFactory()));             httpsConnection.setHostnameVerifier(new HostnameVerifier() {                @Override                public boolean verify(String s, SSLSession sslSession) {                    return true;                }            });             super.prepareConnection(httpsConnection, httpMethod);        } catch (Exception e) {            e.printStackTrace();        }    }    private static class MyCustomSSLSocketFactory extends SSLSocketFactory {         private final SSLSocketFactory delegate;         public MyCustomSSLSocketFactory(SSLSocketFactory delegate) {            this.delegate = delegate;        }         // 返回默认启用的密码套件。除非一个列表启用，对SSL连接的握手会使用这些密码套件。        // 这些默认的服务的最低质量要求保密保护和服务器身份验证        @Override        public String[] getDefaultCipherSuites() {            return delegate.getDefaultCipherSuites();        }         // 返回的密码套件可用于SSL连接启用的名字        @Override        public String[] getSupportedCipherSuites() {            return delegate.getSupportedCipherSuites();        }          @Override        public Socket createSocket(final Socket socket, final String host, final int port,                                   final boolean autoClose) throws IOException {            final Socket underlyingSocket = delegate.createSocket(socket, host, port, autoClose);            return overrideProtocol(underlyingSocket);        }          @Override        public Socket createSocket(final String host, final int port) throws IOException {            final Socket underlyingSocket = delegate.createSocket(host, port);            return overrideProtocol(underlyingSocket);        }         @Override        public Socket createSocket(final String host, final int port, final InetAddress localAddress,                                   final int localPort) throws                IOException {            final Socket underlyingSocket = delegate.createSocket(host, port, localAddress, localPort);            return overrideProtocol(underlyingSocket);        }         @Override        public Socket createSocket(final InetAddress host, final int port) throws IOException {            final Socket underlyingSocket = delegate.createSocket(host, port);            return overrideProtocol(underlyingSocket);        }         @Override        public Socket createSocket(final InetAddress host, final int port, final InetAddress localAddress,                                   final int localPort) throws                IOException {            final Socket underlyingSocket = delegate.createSocket(host, port, localAddress, localPort);            return overrideProtocol(underlyingSocket);        }         private Socket overrideProtocol(final Socket socket) {            if (!(socket instanceof SSLSocket)) {                throw new RuntimeException("An instance of SSLSocket is expected");            }            //((SSLSocket) socket).setEnabledProtocols(new String[]{"TLSv1.2"});            ((SSLSocket) socket).setEnabledProtocols(new String[]{"TLSv1", "TLSv1.1", "TLSv1.2"});            return socket;        }    }}

注意：服务端TLS版本要和客户端工具类中定义的一致。（TLSv1.2）

2、修改RestTemplate

在使用的时候，将

private static RestTemplate restTemplate = new RestTemplate();

改为：

private static RestTemplate restTemplate = new RestTemplate(new HttpsClientRequestFactory());

其他代码不变。

也可使用注入的方式：

@Configurationpublic class ConfigBean { @Bean public RestTemplate getRestTemplate() {  return new RestTemplate(new HttpsClientRequestFactory()); }}

3、访问https，抛出的异常

javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure解决方案

因为jdk中jce的安全机制导致报的错，需要去oracle官网下载对应的jce包替换jdk中的jce包。

方案一：替换jce包

目录 %JAVA_HOME%\jre\lib\security里的local_policy.jar,US_export_policy.jarJDK7 http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.htmlJDK8 http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html // pub1:/home/myron/jdk1.7.0_80 % cd $JAVA_HOME/jre/lib/security/  //jce所在jdk的路径US_export_policy.jarlocal_policy.jar

方案二：升级 JDK到1.8版本（推荐方式）

// pub1:/home/myron % vi .cshrcsetenv JAVA_HOME /home/myron/jdk1.8.0_211// pub1:/home/myron % source .cshrc// pub1:/home/myron % java -versionjava version "1.8.0_211"

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