Mina的ssl加密

package com.example.mina.ssl;

import java.io.File;
import java.security.KeyStore;

import javax.net.ssl.SSLContext;

import org.apache.mina.filter.ssl.KeyStoreFactory;
import org.apache.mina.filter.ssl.SslContextFactory;

public class SSLContextGenerator {

    /**
     * 这个方法，通过keystore和truststore文件返回一个SSLContext对象
     * 
     * @return
     */
    public SSLContext getSslContext() {
        SSLContext sslContext = null;
        try {
            /*
             * 提供keystore的存放目录，读取keystore的文件内容
             */
            File keyStoreFile = new File("G:/ssl/keystore.jks");

            /*
             * 提供truststore的存放目录，读取truststore的文件内容
             */
            File trustStoreFile = new File(
                    "G:/ssl/truststore.jks");

            if (keyStoreFile.exists() && trustStoreFile.exists()) {
                final KeyStoreFactory keyStoreFactory = new KeyStoreFactory();
                System.out.println("Url is: " + keyStoreFile.getAbsolutePath());
                keyStoreFactory.setDataFile(keyStoreFile);

                /*
                 * 这个是当初我们使用keytool创建keystore和truststore文件的密码,也是上次让你们一定要记住密码的原因了
                 */
                keyStoreFactory.setPassword("123456");

                final KeyStoreFactory trustStoreFactory = new KeyStoreFactory();
                trustStoreFactory.setDataFile(trustStoreFile);
                trustStoreFactory.setPassword("123456");

                final SslContextFactory sslContextFactory = new SslContextFactory();
                final KeyStore keyStore = keyStoreFactory.newInstance();
                sslContextFactory.setKeyManagerFactoryKeyStore(keyStore);

                final KeyStore trustStore = trustStoreFactory.newInstance();
                sslContextFactory.setTrustManagerFactoryKeyStore(trustStore);
                sslContextFactory
                        .setKeyManagerFactoryKeyStorePassword("123456");
                sslContext = sslContextFactory.newInstance();
                System.out.println("SSL provider is: "
                        + sslContext.getProvider());
            } else {
                System.out
                        .println("Keystore or Truststore file does not exist");
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return sslContext;
    }
}

        /*
         * 获取过滤器链,用于添加过滤器
         */
        DefaultIoFilterChainBuilder chain = connector.getFilterChain();

        /*
         * 2.为连接添加过滤器，SSL、日志、编码过滤器
         */
        // SSLContextGenerator是我们自己写的一个SSL上下文产生器,稍后会讲到
        SslFilter sslFilter = new SslFilter(
                new SSLContextGenerator().getSslContext());
        // 设置为客户端模式
        sslFilter.setUseClientMode(true);
        // a.ssl过滤器，这个一定要第一个添加，否则数据不会进行加密
        chain.addFirst("sslFilter", sslFilter);

        // b.添加日志过滤器
        chain.addLast("logger", new LoggingFilter());

        // c.添加字符的编码过滤器
        chain.addLast("codec", new ProtocolCodecFilter(new TextLineCodecFactory(Charset.forName("UTF-8"))));

        /*