第三方登录，首先需要设计扩展性的表结构。参照如下：本文主要写第三方登录的代码。
浅谈数据库用户设计：http://www.cnblogs.com/jiqing9006/p/5937733.html
可绑定可扩展的账号系统：http://blog.cocosdever.com/2016/03/08/The-design-principle-and-implementation-of-extensible-account-system-1/
第三方登录流程是：先获取code---->然后获取access_token----->根据token获取用户信息。
前台页面实现步骤：点击微博登录按钮---->打开一个子窗口，进行授权------>授权完成，跳转到首页或上次浏览的页面。
1、写第三方登录的按钮，点击按钮时，打开一个子窗口。
redirect_uri是你在微博上设置的回调地址。
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script type="text/javascript" src="http://statics.2cto.com/js/jquery.min.js"></script>
</head>
<script type="text/javascript">
var qqAuthWin,weiboAuthWin;
/**
* 关闭QQ子窗口
*/
function closeQQWin(){
var result = $("#qq").val();
if(result != ""){
console.log(result);
qqAuthWin.close();
}else{
console.log("值为空");
}
}
/**
* QQ登录
* http://localhost:9090/logback/qq.jsp QQ互联上设置的回调地址
*/
function loginQQ(){
qqAuthWin = window.open("https://graph.qq.com/oauth2.0/authorize?response_type=code&client_id=CLIENT_ID&state=register&redirect_uri=http://localhost:9090/logback/qq.jsp",
'QQ授权登录','width=770,height=600,menubar=0,scrollbars=1,'+
'resizable=1,status=1,titlebar=0,toolbar=0,location=1');
}
/**
* 关闭微博子窗口
*/
function closeWeiboWin(){
var result = $("#weibo").val();
if(result != ""){
console.log(result);
weiboAuthWin.close();
}else{
console.log("值为空");
}
}
/**
* 微博登录
* http://localhost:9090/logback/weibo.jsp这个就是在微博上设置的回调地址
*/
function loginWeibo(){
weiboAuthWin = window.open("https://api.weibo.com/oauth2/authorize?client_id=CLIENT_ID&response_type=code&state=register&redirect_uri=http://localhost:9090/logback/weibo.jsp",
'微博授权登录','width=770,height=600,menubar=0,scrollbars=1,'+
'resizable=1,status=1,titlebar=0,toolbar=0,location=1');
}
</script>
<body>
<input type="hidden" id="qq" value="">
<a href="#" onClick="loginQQ()">QQ登录</a>
<br><br>
<hr>
<br>
<input type="hidden" id="weibo" value="">
<a href="#" onClick="loginWeibo()">微博登录</a>
</body>
</html>
2、回调地址页（qq.jsp、weibo.jsp）
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
String code = request.getParameter("code");//获取QQ返回的code
String state = request.getParameter("state");
%>
<!DOCTYPE HTML>
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'weibo.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script type="text/javascript" src="http://statics.2cto.com/js/jquery.min.js"></script>
<script>
$(function(){
var code = "<%=code%>";
var state = "<%=state%>";
$.ajax({
url:"http://localhost:8080/cms_manage/api/qqLogin",
type:"post",
data:{code:code,state:state},
dataType:"json",
success:function(result){
result = JSON.stringify(result);
console.log(result);
//把返回的数据传给父窗口的隐藏域中
window.opener.document.getElementById("qq").value = result;
//授权完成后，关闭子窗口
window.opener.closeQQWin();
}
});
});
</script>
</head>
<body>
登录成功。
</body>
</html>
qq.jsp和weibo,jsp是一样的。。。
3、java代码
/**
* 微博第三方登录
* @author techbuddy
*
*/
@Controller
public class WeiboLoginController {
private Logger logger = Logger.getLogger(WeiboLoginController.class);
private final static String CLIENT_ID = "";
private final static String CLIENT_SERCRET = "";
private final static String GET_TOKEN_URL = "https://api.weibo.com/oauth2/access_token";
private final static String REDIRECT_URI = "http://localhost:9090/logback/weibo.jsp";
private final static String GET_USER_INFO = "https://api.weibo.com/2/users/show.json";
private final static String GET_TOKEN_INFO_URL = "https://api.weibo.com/oauth2/get_token_info";
private final static String STATE = "register";
@RequestMapping(value="/api/weiboLogin",method=RequestMethod.POST)
@ResponseBody
public CMS_Result weiboLogin(HttpServletRequest request,HttpServletResponse response){
CMS_Result result = null;
String error_code = request.getParameter("error_code");
if(StringUtils.isNotBlank(error_code)){
result = CMS_Result.bulid("5001", "微博授权失败");
}else{
try{
//获取code
String code = request.getParameter("code");
logger.info("code：" + code);
//获取state
String state = request.getParameter("state");
logger.info("state:"+state);
String access_token = "";
String expires_in = "";
String uid = "";
if(STATE.equals(state)){
//获取token
JSONObject token = getAccessToken(code);
access_token = token.getString("access_token");
uid = token.getString("uid");
expires_in = String.valueOf(token.getInt("expires_in"));
logger.info("token:"+token);
}else{
result = CMS_Result.bulid("5001", "微博授权失败");
}
//查询该用户信息
OauthUser oauthUser = oauthUserService.findWeiboByIdentifier(uid);
Master master = null;
if(oauthUser != null){
master = masterInfoDao.findById(oauthUser.getMaster_id());
}else{
//获取用户信息
JSONObject userInfo = getUserInfo(access_token, uid);
logger.info("用户信息"+userInfo);
String nickname = userInfo.getString("screen_name");
String profile_image_url = userInfo.getString("profile_image_url");
String gender = "f".equals(userInfo.getString("gender"))?"1":"0";
//向第三方登录表中添加数据
OauthUser user = new OauthUser();
user.setId(UUID.randomUUID().toString());
String master_id = UUID.randomUUID().toString();
user.setMaster_id(master_id);
user.setIdentity_type("weibo");
user.setIdentifier(uid);
user.setCredential(access_token);
user.setExpires_in(expires_in);
user.setStatus("0");
oauthUserService.insert(user);
//向用户表中添加默认数据
Master masterUser = new Master();
masterUser.setId(master_id);
masterUser.setNickname(nickname);
masterUser.setHead_portrait(profile_image_url);
masterUser.setSex(gender);
//由于第三方登录没有用户名密码，而且该字段在数据库中不为空，在此设置默认用户名密码
masterUser.setUser_name("wbu"+access_token.substring(0, 9));
masterUser.setPassword("wbp"+access_token.substring(0, 9));
masterInfoService.insertDefault(masterUser);
master = masterUser;
}
result = CMS_Result.ok();
}catch (Exception e) {
e.printStackTrace();
result = CMS_Result.bulid("5001", "登录失败");
}
}
return result;
}
/**
* 获取AccessToken
*/
private JSONObject getAccessToken(String code) {
StringBuilder sb = new StringBuilder();
sb.append("grant_type=authorization_code");
sb.append("&client_id=" + CLIENT_ID);
sb.append("&client_secret=" + CLIENT_SERCRET);
sb.append("&redirect_uri=" + REDIRECT_URI);
sb.append("&code=" + code);
String result = HttpsUtil.post(GET_TOKEN_URL,sb.toString());
/**
* 返回数据
* {
* "access_token": "ACCESS_TOKEN",
* "expires_in": 1234,
* "remind_in":"798114",
* "uid":"12341234"
* }
*/
JSONObject json = new JSONObject(result);
return json;
}
/**
* 获取用户信息
* @param access_token
* @param uid 查询的用户ID
* @return
*/
private JSONObject getUserInfo(String access_token,String uid){
StringBuilder sb = new StringBuilder();
sb.append("?access_token=" + access_token);
sb.append("&uid=" + uid);
String result = HttpsUtil.get(GET_USER_INFO+sb.toString());
//返回参数：查看http://open.weibo.com/wiki/2/users/show
JSONObject json = new JSONObject(result);
return json;
}