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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;

}

}

}

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private static RestTemplate restTemplate = new RestTemplate();

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

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@Configuration

public class ConfigBean {

@Bean

public RestTemplate getRestTemplate() {

return new RestTemplate(new HttpsClientRequestFactory());

}

}

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目录 %JAVA_HOME%\jre\lib\security里的local_policy.jar,US_export_policy.jar

JDK7 http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html

JDK8 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.jar

local_policy.jar

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// pub1:/home/myron % vi .cshrc

setenv JAVA_HOME /home/myron/jdk1.8.0_211

// pub1:/home/myron % source .cshrc

// pub1:/home/myron % java -version

java version "1.8.0_211"