实际开发过程中，server端是不须要多加代码处理的，由于ssl验证过程是由server（tomcat、nginx等）完毕的。
这段代码也是參考了网上的：
新建一个web项目，项目结构和须要引入的jar例如以下：
web.xml配置：
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
<display-name>Secure Sockets Layer</display-name>
<servlet>
<servlet-name>SSLServlet</servlet-name>
<servlet-class>com.sengle.cloud.servlet.SSLServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>SSLServlet</servlet-name>
<url-pattern>/sslServlet</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- SSL配置 -->
<security-constraint>
<web-resource-collection>
<web-resource-name>SSL</web-resource-name>
<url-pattern>/*</url-pattern>
</web-resource-collection>
<user-data-constraint>
<description>SSL required</description>
<transport-guarantee>CONFIDENTIAL</transport-guarantee>
</user-data-constraint>
</security-constraint>
</web-app>server端，写了个servlet（注意配置到web.xml中）。代码例如以下：
import java.io.IOException;
import java.io.PrintWriter;
import java.security.cert.X509Certificate;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class SSLServlet extends HttpServlet {
private static final long serialVersionUID = 1601507150278487538L;
private static final String ATTR_CER = "javax.servlet.request.X509Certificate";
private static final String CONTENT_TYPE = "text/plain;charset=UTF-8";
private static final String DEFAULT_ENCODING = "UTF-8";
private static final String SCHEME_HTTPS = "https";
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType(CONTENT_TYPE);
response.setCharacterEncoding(DEFAULT_ENCODING);
PrintWriter out = response.getWriter();
X509Certificate[] certs = (X509Certificate[]) request.getAttribute(ATTR_CER);
if (certs != null) {
int count = certs.length;
out.println("共检測到[" + count + "]个client证书");
for (int i = 0; i < count; i++) {
out.println("client证书 [" + (++i) + "]： ");
out.println("校验结果：" + verifyCertificate(certs[--i]));
out.println("证书具体：
" + certs[i].toString());
}
} else {
if (SCHEME_HTTPS.equalsIgnoreCase(request.getScheme())) {
out.println("这是一个HTTPS请求。可是没有可用的client证书");
request.setAttribute("user", "username");
out.println(request.getAttribute("user"));
} else {
out.println("这不是一个HTTPS请求，因此无法获得client证书列表 ");
}
}
out.close();
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
/**
* <p>
* 校验证书是否过期
* </p>
*
* @param certificate
* @return
*/
private boolean verifyCertificate(X509Certificate certificate) {
boolean valid = true;
try {
certificate.checkValidity();
} catch (Exception e) {
e.printStackTrace();
valid = false;
}
return valid;
}
/**
* Copyright (C) 2011-2014 sgcc Inc.
* All right reserved.
* modify info:
*/
package com.sengle.cloud.client;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.security.KeyStore;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
public class HttpsClient {
private static final String KEY_STORE_TYPE_TRUST = "jks"; //假设证书为bks格式，那么要改为bks，同一时候以下的KEY_STORE_TYPE_CLIENT也要改为bks
// private static final String KEY_STORE_TYPE_CLIENT = "PKCS12"; //假设KEY_STORE_TYPE_TRUST为jks，则KEY_STORE_TYPE_CLIENT为PKCS12
private static final String KEY_STORE_TYPE_CLIENT = "PKCS12"; //假设KEY_STORE_TYPE_TRUST为bks，则此处也应该为bks。
private static final String SCHEME_HTTPS = "https";
private static final int HTTPS_PORT = 8443; //此处为tomcat中的配置。默觉得8443
private static final String HTTPS_URL = "https://10.100.100.24:8443/SSL/sslServlet";
private static final String basePath = "D:/SSL/";
private static final String KEY_STORE_CLIENT_PATH = basePath + "/client-24.p12"; //假设为bks，那么此处应该为bks格式的证书
private static final String KEY_STORE_TRUST_PATH = basePath + "/client-24.truststore"; //假设为bks，那么此处应该为bks格式的证书
private static final String KEY_STORE_PASSWORD = "123456"; //password
private static final String KEY_STORE_TRUST_PASSWORD = "123456"; // password
public static void main(String[] args) throws Exception {
ssl();
}
private static void ssl() throws Exception {
HttpClient httpClient = new DefaultHttpClient();
try {
KeyStore keyStore = KeyStore.getInstance(KEY_STORE_TYPE_CLIENT);
KeyStore trustStore = KeyStore.getInstance(KEY_STORE_TYPE_TRUST);
InputStream ksIn = new FileInputStream(KEY_STORE_CLIENT_PATH);
InputStream tsIn = new FileInputStream(new File(KEY_STORE_TRUST_PATH));
try {
keyStore.load(ksIn, KEY_STORE_PASSWORD.toCharArray());
trustStore.load(tsIn, KEY_STORE_TRUST_PASSWORD.toCharArray());
} finally {
try { ksIn.close(); } catch (Exception ignore) {}
try { tsIn.close(); } catch (Exception ignore) {}
}
//双向验证载入keystore和truststore两个证书
SSLSocketFactory socketFactory = new SSLSocketFactory(keyStore, KEY_STORE_PASSWORD, trustStore);
/*
* 单向验证，仅仅载入truststore
SSLSocketFactory socketFactory = new SSLSocketFactory(trustStore);
*/
Scheme sch = new Scheme(SCHEME_HTTPS, HTTPS_PORT, socketFactory);
httpClient.getConnectionManager().getSchemeRegistry().register(sch);
HttpGet httpget = new HttpGet(HTTPS_URL);
System.out.println("executing request" + httpget.getRequestLine());
HttpResponse response = httpClient.execute(httpget);
HttpEntity entity = response.getEntity();
System.out.println("----------------------------------------");
System.out.println(response.getStatusLine());
if (entity != null) {
System.out.println("Response content length: " + entity.getContentLength());
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(entity.getContent()));
String text;
while ((text = bufferedReader.readLine()) != null) {
System.out.println(text);
}
bufferedReader.close();
}
EntityUtils.consume(entity);
} finally {
httpClient.getConnectionManager().shutdown();
}
}
}