主要就是org.springframework.security.authentication.LockedException: 用戶帳號已被鎖定這個異常，完整異常如下：

[2020-05-09 16:07:00 下午]:DEBUG org.springframework.security.authentication.dao.AbstractUserDetailsAuthenticationProvider$DefaultPreAuthenticationChecks.check(AbstractUserDetailsAuthenticationProvider.java:353)User account is locked[2020-05-09 16:07:00 下午]:DEBUG org.springframework.web.servlet.FrameworkServlet.logResult(FrameworkServlet.java:1101)Failed to complete request: org.springframework.security.authentication.LockedException: 用戶帳號已被鎖定[2020-05-09 16:07:00 下午]:DEBUG org.springframework.security.web.access.ExceptionTranslationFilter.handleSpringSecurityException(ExceptionTranslationFilter.java:170)Authentication exception occurred; redirecting to authentication entry pointorg.springframework.security.authentication.LockedException: 用戶帳號已被鎖定at org.springframework.security.authentication.dao.AbstractUserDetailsAuthenticationProvider$DefaultPreAuthenticationChecks.check(AbstractUserDetailsAuthenticationProvider.java:355)at org.springframework.security.authentication.dao.AbstractUserDetailsAuthenticationProvider.authenticate(AbstractUserDetailsAuthenticationProvider.java:165)at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:175)at cn.edu.njust.mango.security.SecurityUtils.login(SecurityUtils.java:82)at cn.edu.njust.mango.controller.SysLoginController.login(SysLoginController.java:104)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:498)at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793)at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:123)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320)at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126)at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90)at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118)at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137)at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158)at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)at cn.edu.njust.mango.security.JwtAuthenticationFilter.doFilterInternal(JwtAuthenticationFilter.java:27)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116)at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:92)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92)at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215)at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178)at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358)at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1594)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Thread.java:748)

測試結果直接403

   明明用戶名和密碼正確，而且沒有設置狀態鎖定，怎么被鎖定了呢？這是由于我們在重寫UserDetails接口時，有個默認實現的方法public boolean isAccountNonLocked()，默認返回的是false，翻譯成人話就是：是否不上鎖，否，即上鎖。異常代碼如下：

package cn.edu.njust.mango.security;import com.fasterxml.jackson.annotation.JsonIgnore;import lombok.Data;import org.springframework.security.core.GrantedAuthority;import org.springframework.security.core.userdetails.UserDetails;import java.util.Collection;/** * @author Chen * @version 1.0 * @date 2020/5/8 7:42 * @description: */@Datapublic class JwtUserDetails implements UserDetails { private String username; private String password; private String salt; private Collection<? extends GrantedAuthority> authorities; public JwtUserDetails(String username, String password, String salt, Collection<? extends GrantedAuthority> authorities) { this.username = username; this.password = password; this.salt = salt; this.authorities = authorities; } @Override public boolean isAccountNonExpired() { return false; } @Override public boolean isAccountNonLocked() { return false; } @Override public boolean isCredentialsNonExpired() { return false; } @Override public boolean isEnabled() { return false; }}

知道原因就很好解決了。直接將返回值變成true就行了。修改后的代碼如下：

package cn.edu.njust.mango.security;import com.fasterxml.jackson.annotation.JsonIgnore;import lombok.Data;import org.springframework.security.core.GrantedAuthority;import org.springframework.security.core.userdetails.UserDetails;import java.util.Collection;/** * @author Chen * @version 1.0 * @date 2020/5/8 7:42 * @description: */@Datapublic class JwtUserDetails implements UserDetails { private String username; private String password; private String salt; private Collection<? extends GrantedAuthority> authorities; public JwtUserDetails(String username, String password, String salt, Collection<? extends GrantedAuthority> authorities) { this.username = username; this.password = password; this.salt = salt; this.authorities = authorities; }// 在實體類向前臺返回數據時用來忽略不想傳遞給前臺的屬性或接口。 @JsonIgnore @Override public boolean isAccountNonExpired() { return true; } @JsonIgnore @Override public boolean isAccountNonLocked() { return true; } @JsonIgnore @Override public boolean isCredentialsNonExpired() { return true; } @JsonIgnore @Override public boolean isEnabled() { return true; }}

重啟服務器再次訪問。

返回200，訪問成功！

  書上的代碼直接運行絕大部分是對的，但是總有一些軟件的更新使得作者無能為力。之前的API是對的，但是之后就廢棄了或修改了是常有的事。所以我們需要跟蹤源代碼。這只是一個小小的問題，如果沒有前輩的無私奉獻，很難想象我們自己一天能學到多少內容。

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