使用Httpclient实现SSL双向认证

转载自：http://www.blogjava.net/itvincent/articles/330988.html 

1、生成服务器端证书 
Java代码 
keytool -genkey -keyalg RSA -dname "cn=localhost,ou=sango,o=none,l=china,st=beijing,c=cn" -alias server -keypass password -keystore server.jks -storepass password -validity 3650

keytool -genkey -keyalg RSA -dname "cn=localhost,ou=sango,o=none,l=china,st=beijing,c=cn" -alias server -keypass password -keystore server.jks -storepass password -validity 3650
2、生成客户端证书 
Java代码 
keytool -genkey -keyalg RSA -dname "cn=sango,ou=sango,o=none,l=china,st=beijing,c=cn" -alias custom -storetype PKCS12 -keypass password -keystore custom.p12 -storepass password -validity 3650

keytool -genkey -keyalg RSA -dname "cn=sango,ou=sango,o=none,l=china,st=beijing,c=cn" -alias custom -storetype PKCS12 -keypass password -keystore custom.p12 -storepass password -validity 3650
客户端的CN可以是任意值。 
3、由于是双向SSL认证，服务器必须要信任客户端证书，因此，必须把客户端证书添加为服务器的信任认证。由于不能直接将PKCS12格式的证书库导入，我们必须先把客户端证书导出为一个单独的CER文件，使用如下命令，先把客户端证书导出为一个单独的cer文件： 
Java代码 
keytool -export -alias custom -file custom.cer -keystore custom.p12 -storepass password -storetype PKCS12 -rfc

keytool -export -alias custom -file custom.cer -keystore custom.p12 -storepass password -storetype PKCS12 -rfc
然后，添加客户端证书到服务器中（将已签名数字证书导入密钥库） 
Java代码 
keytool -import -v -alias custom -file custom.cer -keystore server.jks -storepass password

keytool -import -v -alias custom -file custom.cer -keystore server.jks -storepass password
4、查看证书内容 
Java代码 
keytool -list -v -keystore server.jks -storepass password

keytool -list -v -keystore server.jks -storepass password
5、配置tomcat service.xml文件 
Xml代码 



clientAuth="true"表示双向认证 
6、导入客户端证书到浏览器 
双向认证需要强制验证客户端证书。双击“custom.p12”即可将证书导入至IE

7、java代码实现

DefaultHttpClient httpclient = new DefaultHttpClient();

KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType()); 
FileInputStream instream = new FileInputStream(new File("D:/server.jks"));
try {
trustStore.load(instream, "password".toCharArray());
} finally {
instream.close();
}

SSLSocketFactory socketFactory = new SSLSocketFactory(trustStore,"password",trustStore);
Scheme sch = new Scheme("https", socketFactory, 443);
httpclient.getConnectionManager().getSchemeRegistry().register(sch);

HttpGet httpget = new HttpGet("https://localhost:8443/");

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());
}
if (entity != null) {
entity.consumeContent();
}
httpclient.getConnectionManager().shutdown();