在分布式环境中，如何支持PC、APP（ios、android）等多端的会话共享，这也是所有公司都需要的解决方案，用传统的session方式来解决，我想已经out了，我们是否可以找一个通用的方案，比如用传统cas来实现多系统之间的sso单点登录或使用oauth的第三方登录方案? 今天给大家简单讲解一下使用spring拦截器Interceptor机制、jwt认证方式、redis分布式缓存实现sso单点登录
}
publicvoid setUid(String uid) {
this.uid = uid;
}
public String getToken() {
return token;
}
publicvoid setToken(String token) {
this.token = token;
}
publiclong getRefTime() {
return refTime;
}
publicvoid setRefTime(long refTime) {
this.refTime = refTime;
}
}
public class RedisLogin implements Serializable{
/**
*
*/
private static final long serialVersionUID = 8116817810829835862L;
/**
* 用户id
*/
private String uid;
/**
* jwt生成的token信息
*/
private String token;
/**
* 登录或刷新应用的时间
*/
private long refTime;
public RedisLogin(){
}
public RedisLogin(String uid, String token, long refTime){
this.uid = uid;
this.token = token;
this.refTime = refTime;
}
public String getUid() {
return uid;
}
public void setUid(String uid) {
this.uid = uid;
}
public String getToken() {
return token;
}
public void setToken(String token) {
this.token = token;
}
public long getRefTime() {
return refTime;
}
public void setRefTime(long refTime) {
this.refTime = refTime;
}
}
6. 编写LoginInterceptor.java拦截器
Java代码
publicclass LoginInterceptorimplements HandlerInterceptor{
publicboolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception {
PrintWriter writer =null;
HandlerMethod method =null;
try {
method = (HandlerMethod) handler;
}catch (Exception e) {
writer = response.getWriter();
ResponseVO responseVO = ResponseCode.buildEnumResponseVO(ResponseCode.REQUEST_URL_NOT_SERVICE,false);
responseMessage(response, writer, responseVO);
returnfalse;
}
IsLogin isLogin = method.getMethodAnnotation(IsLogin.class);
if(null == isLogin){
returntrue;
}
response.setCharacterEncoding("utf-8");
String token = request.getHeader("token");
String uid = request.getHeader("uid");
//token不存在
if(StringUtils.isEmpty(token)) {
writer = response.getWriter();
ResponseVO responseVO = LoginResponseCode.buildEnumResponseVO(LoginResponseCode.LOGIN_TOKEN_NOT_NULL,false);
responseMessage(response, writer, responseVO);
returnfalse;
}
if(StringUtils.isEmpty(uid)){
writer = response.getWriter();
ResponseVO responseVO = LoginResponseCode.buildEnumResponseVO(LoginResponseCode.USERID_NOT_NULL,false);
responseMessage(response, writer, responseVO);
returnfalse;
}
Login login = JWT.unsign(token, Login.class);
//解密token后的loginId与用户传来的loginId判断是否一致
if(null == login || !StringUtils.equals(login.getUid(), uid)){
writer = response.getWriter();
ResponseVO responseVO = LoginResponseCode.buildEnumResponseVO(LoginResponseCode.USERID_NOT_UNAUTHORIZED,false);
responseMessage(response, writer, responseVO);
returnfalse;
}
//验证登录时间
RedisLogin redisLogin = (RedisLogin)JedisUtils.getObject(uid);
if(null == redisLogin){
writer = response.getWriter();
ResponseVO responseVO = LoginResponseCode.buildEnumResponseVO(LoginResponseCode.RESPONSE_CODE_UNLOGIN_ERROR,false);
responseMessage(response, writer, responseVO);
returnfalse;
}
if(!StringUtils.equals(token, redisLogin.getToken())){
writer = response.getWriter();
ResponseVO responseVO = LoginResponseCode.buildEnumResponseVO(LoginResponseCode.USERID_NOT_UNAUTHORIZED,false);
responseMessage(response, writer, responseVO);
returnfalse;
}
//系统时间>有效期（说明已经超过有效期）
if (System.currentTimeMillis() > redisLogin.getRefTime()) {
writer = response.getWriter();
ResponseVO responseVO = LoginResponseCode.buildEnumResponseVO(LoginResponseCode.LOGIN_TIME_EXP,false);
responseMessage(response, writer, responseVO);
returnfalse;
}
//重新刷新有效期
redisLogin =new RedisLogin(uid, token, System.currentTimeMillis() + 60L* 1000L* 30L);
JedisUtils.setObject(uid , redisLogin,360000000);
returntrue;
}
publicvoid postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
ModelAndView modelAndView)throws Exception {
}
publicvoid afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
throws Exception {
}
privatevoid responseMessage(HttpServletResponse response, PrintWriter out, ResponseVO responseVO) {
response.setContentType("application/json; charset=utf-8");
JSONObject result =new JSONObject();
result.put("result", responseVO);
out.print(result);
out.flush();
out.close();
}
}
[java]view plaincopyprint?
publicclass LoginInterceptorimplements HandlerInterceptor{
publicboolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception {
PrintWriter writer =null;
HandlerMethod method =null;
try {
method = (HandlerMethod) handler;
}catch (Exception e) {
writer = response.getWriter();
ResponseVO responseVO = ResponseCode.buildEnumResponseVO(ResponseCode.REQUEST_URL_NOT_SERVICE,false);
responseMessage(response, writer, responseVO);
returnfalse;
}
IsLogin isLogin = method.getMethodAnnotation(IsLogin.class);
if(null == isLogin){
returntrue;
}
response.setCharacterEncoding("utf-8");
String token = request.getHeader("token");
String uid = request.getHeader("uid");
//token不存在
if(StringUtils.isEmpty(token)) {
writer = response.getWriter();
ResponseVO responseVO = LoginResponseCode.buildEnumResponseVO(LoginResponseCode.LOGIN_TOKEN_NOT_NULL,false);
responseMessage(response, writer, responseVO);
returnfalse;
}
if(StringUtils.isEmpty(uid)){
writer = response.getWriter();
ResponseVO responseVO = LoginResponseCode.buildEnumResponseVO(LoginResponseCode.USERID_NOT_NULL,false);
responseMessage(response, writer, responseVO);
returnfalse;
}
Login login = JWT.unsign(token, Login.class);
//解密token后的loginId与用户传来的loginId判断是否一致
if(null == login || !StringUtils.equals(login.getUid(), uid)){
writer = response.getWriter();
ResponseVO responseVO = LoginResponseCode.buildEnumResponseVO(LoginResponseCode.USERID_NOT_UNAUTHORIZED,false);
responseMessage(response, writer, responseVO);
returnfalse;
}
//验证登录时间
RedisLogin redisLogin = (RedisLogin)JedisUtils.getObject(uid);
if(null == redisLogin){
writer = response.getWriter();
ResponseVO responseVO = LoginResponseCode.buildEnumResponseVO(LoginResponseCode.RESPONSE_CODE_UNLOGIN_ERROR,false);
responseMessage(response, writer, responseVO);
returnfalse;
}
if(!StringUtils.equals(token, redisLogin.getToken())){
writer = response.getWriter();
ResponseVO responseVO = LoginResponseCode.buildEnumResponseVO(LoginResponseCode.USERID_NOT_UNAUTHORIZED,false);
responseMessage(response, writer, responseVO);
returnfalse;
}
//系统时间>有效期（说明已经超过有效期）
if (System.currentTimeMillis() > redisLogin.getRefTime()) {
writer = response.getWriter();
ResponseVO responseVO = LoginResponseCode.buildEnumResponseVO(LoginResponseCode.LOGIN_TIME_EXP,false);
responseMessage(response, writer, responseVO);
returnfalse;
}
//重新刷新有效期
redisLogin =new RedisLogin(uid, token, System.currentTimeMillis() + 60L* 1000L* 30L);
JedisUtils.setObject(uid , redisLogin,360000000);
returntrue;
}
publicvoid postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
ModelAndView modelAndView)throws Exception {
}
publicvoid afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
throws Exception {
}
privatevoid responseMessage(HttpServletResponse response, PrintWriter out, ResponseVO responseVO) {
response.setContentType("application/json; charset=utf-8");
JSONObject result =new JSONObject();
result.put("result", responseVO);
out.print(result);
out.flush();
out.close();
}
}
public class LoginInterceptor implements HandlerInterceptor{
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception {
PrintWriter writer = null;
HandlerMethod method = null;
try {
method = (HandlerMethod) handler;
} catch (Exception e) {
writer = response.getWriter();
ResponseVO responseVO = ResponseCode.buildEnumResponseVO(ResponseCode.REQUEST_URL_NOT_SERVICE, false);
responseMessage(response, writer, responseVO);
return false;
}
IsLogin isLogin = method.getMethodAnnotation(IsLogin.class);
if(null == isLogin){
return true;
}
response.setCharacterEncoding("utf-8");
String token = request.getHeader("token");
String uid = request.getHeader("uid");
//token不存在
if(StringUtils.isEmpty(token)) {
writer = response.getWriter();
ResponseVO responseVO = LoginResponseCode.buildEnumResponseVO(LoginResponseCode.LOGIN_TOKEN_NOT_NULL, false);
responseMessage(response, writer, responseVO);
return false;
}
if(StringUtils.isEmpty(uid)){
writer = response.getWriter();
ResponseVO responseVO = LoginResponseCode.buildEnumResponseVO(LoginResponseCode.USERID_NOT_NULL, false);
responseMessage(response, writer, responseVO);
return false;
}
Login login = JWT.unsign(token, Login.class);
//解密token后的loginId与用户传来的loginId判断是否一致
if(null == login || !StringUtils.equals(login.getUid(), uid)){
writer = response.getWriter();
ResponseVO responseVO = LoginResponseCode.buildEnumResponseVO(LoginResponseCode.USERID_NOT_UNAUTHORIZED, false);
responseMessage(response, writer, responseVO);
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更多详细源码参考来源