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跨服务器登录验证(单点登录SSO)的过程和Java实现 收藏
如果我们的网站需要和另一个域名做统一认证，也就是在我们网站登录，但真正的功能却在另一个网站来提供。许多都以 passport 的方式。
整个认证可以分三步完成
第一步：本地验证
这个很简单，输入本地的用户名和密码，然后服务器认证通过，并返回正确的Cookie;
第二步：做远程认证，并返回远程连接
通过本地Cookie,确认用户合法性，然后服务器端调用远程的登录程序，返回一个远程认证号的URL,这个URL里面包含了一个唯一的认证码，使用Location的方式
第三步：远程登录
客户端使用前一步的URL,访问远程的服务器，服务器确认认证码的正确性，再返回正确的远程Cookie.
至此，本地认证，通过一个URL,实现了远程认证。
以下是示范代码，是Verycd的武林英雄的认证过程，其登录服务是verycd提供的，而真实服务时9wee提供的
package org.javaren.hero;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.Socket;
import java.net.URLEncoder;
import java.util.Scanner;
/*** 跨服务器登录验证(单点登录SSO)的过程和Java实现* * @author JAVA世纪网(java2000.net, laozizhu.com)*/
public class Login {
public static String getCookie() {???
System.out.print("输入用户名:");???
Scanner in = new Scanner(System.in);???
String username = in.next();???
System.out.print("输入密码:");???
String password = in.next();???
try {?????
// 本地认证?????
String cookie = postLogin(username, password);?????
if (cookie == null) {???????
return null;?????
}?????
// 服务器远程认证?????
String url = getLogin2(cookie);?????
if (url == null) {???????
return null;?????
}?????
// 远程访问认证?????
String cookie2 = getLogin3(url.substring("http://s4.verycd.9wee.com".length()));?????
// System.out.println(cookie2);?????
return cookie2;???
} catch (Exception ex)
{????? ex.printStackTrace();?????
return null;??? }}
private static String postLogin(String username, String password) throws Exception {???
Socket socket = new Socket("secure.verycd.com", 80);???
try {?????
StringBuilder sb = new StringBuilder();?????
sb.append("POST /signin?f=out HTTP/1.1\r\n");?????
sb.append("Host: secure.verycd.com\r\n");?????
sb.append("User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3\r\n");?????
sb.append("Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n");?????
sb.append("Accept-Language: zh-cn,zh;q=0.5\r\n");?????
sb.append("Accept-Encoding: gzip,deflate\r\n");?????
sb.append("Accept-Charset: GB2312,utf-8;q=0.7,*;q=0.7\r\n");????? sb.append("Referer: http://secure.verycd.com/3rdServices/50hero\r\n");?????
sb.append("Content-Type: application/x-www-form-urlencoded\r\n");?????
String data = "ru=http%3A%2F%2Fsecure.verycd.com%2F3rdServices%2F50hero&login_submit=%E7%99%BB%E5%BD%95&username="????????? + URLEncoder.encode(username, "UTF-8") + "&password=" + URLEncoder.encode(password, "UTF-8");?????
sb.append("Content-Length: " + data.getBytes("UTF-8").length + "\r\n");?????
sb.append("\r\n");?????
sb.append(data);?????
OutputStream os = socket.getOutputStream();?????
os.write(sb.toString().getBytes("UTF-8"));?????
os.flush();?????
InputStream is = socket.getInputStream();?????
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
// 读取结果?????
String line;?????
StringBuilder cookieSb = new StringBuilder();?????
int index;?????
while ((line = reader.readLine()) != null) {???????
if (line.startsWith("Set-Cookie:")) {?????????
if (!line.contains("=deleted;")) {???????????
index = line.indexOf(";");???????????
if (index > 12) {?????????????
cookieSb.append(line.substring(12, index + 1));??????????? }????????? }???????
} else if (line.startsWith("location:")) {?????????
if (line.contains("error_code")) {???????????
return null;????????? }??????? }????? }?????
is.close();?????
reader.close();?????
return cookieSb.toString();???
} finally {?????
socket.close();??? }}
private static String getLogin2(String cookie) throws Exception {??? Socket socket = new Socket("secure.verycd.com", 80);???
try {?????
StringBuilder sb = new StringBuilder();?????
sb.append("GET /signin?ak=50hero&ru=http%3A%2F%2Fs4.verycd.9wee.com%2Fpassport.php HTTP/1.1\r\n");?????
sb.append("Host: secure.verycd.com\r\n");?????
sb.append("User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3\r\n");?????
sb.append("Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n");?????
sb.append("Accept-Language: zh-cn,zh;q=0.5\r\n");?????
sb.append("Accept-Encoding: gzip,deflate\r\n");?????
sb.append("Accept-Charset: GB2312,utf-8;q=0.7,*;q=0.7\r\n");????? sb.append("Referer: http://secure.verycd.com/3rdServices/50hero\r\n");?????
sb.append("Cookie: " + cookie + "\r\n");?????
sb.append("\r\n");?????
OutputStream os = socket.getOutputStream();?????
os.write(sb.toString().getBytes("UTF-8"));?????
os.flush();?????
InputStream is = socket.getInputStream();?????
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
// 读取结果?????
String line;?????
while ((line = reader.readLine()) != null) {???????
if (line.startsWith("location:")) {
????????? return line.substring(10);???????
}?????
}?????
is.close();?????
reader.close();?????
return null;???
} finally {?????
socket.close();???
}}
private static String getLogin3(String url) throws Exception {??? Socket socket = new Socket("s4.verycd.9wee.com", 80);???
try {?????
StringBuilder sb = new StringBuilder();?????
sb.append("GET " + url + " HTTP/1.1\r\n");?????
sb.append("Host: s4.verycd.9wee.com\r\n");?????
sb.append("User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3\r\n");?????
sb.append("Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n");?????
sb.append("Accept-Language: zh-cn,zh;q=0.5\r\n");?????
sb.append("Accept-Encoding: gzip,deflate\r\n");?????
sb.append("Accept-Charset: GB2312,utf-8;q=0.7,*;q=0.7\r\n");????? sb.append("Referer: http://secure.verycd.com/3rdServices/50hero\r\n");?????
sb.append("\r\n\r\n");?????
OutputStream os = socket.getOutputStream();?????
os.write(sb.toString().getBytes("UTF-8"));?????
os.flush();?????
InputStream is = socket.getInputStream();?????
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
// 读取结果?????
String line;?????
StringBuilder cookieSb = new StringBuilder();?????
int index;?????
while ((line = reader.readLine()) != null) {
??????? if (line.length() == 0) {
????????? break;???????
}???????
if (line.startsWith("Set-Cookie:")) {
????????? index = line.indexOf(";");?????????
if (index > 12) {???????????
cookieSb.append(line.substring(12, index + 1));????????? }??????? }????? }?????
is.close();?????
reader.close();?????
return cookieSb.toString();???
} finally {?????
socket.close();???
}}}