io.jsonwebtoken.SignatureException: JWT signature does not match locally computed signature. JWT val-Toy模板网

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jwt signature does not match locally computed signature. jwt validity cannot,java,spring,servlet,spring boot,intellij-idea

io.jsonwebtoken.SignatureException: JWT signature does not match locally computed signature. JWT validity cannot be asserted and should not be trusted.
   at io.jsonwebtoken.impl.DefaultJwtParser.parse(DefaultJwtParser.java:354)
   at io.jsonwebtoken.impl.DefaultJwtParser.parse(DefaultJwtParser.java:481)
   at io.jsonwebtoken.impl.DefaultJwtParser.parseClaimsJws(DefaultJwtParser.java:541)
   at com.example.mz.helpwork.util.JwtUtil.parseJWT(JwtUtil.java:107)
   at com.example.mz.helpwork.config.jwt.JwtAuthenticationTokenFilter.doFilterInternal(JwtAuthenticationTokenFilter.java:39)
   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.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:750)
11:27:19 ERROR Servlet.service() for servlet [dispatcherServlet] in context with path [/helpwork] threw exception
java.lang.RuntimeException: token非法

这个报错翻译成大白话就是io.jsonwebtoken.SignatureException：JWT签名与本地计算的签名不匹配。JWT的有效性无法断言，也不应受到信任。

我是在我的项目中引入springsecurity+jwt时出现的问题

当遇到这个问题的时候，首先是打断点，判断是哪里出现了问题，我的项目在我生成token的时候是没有任何问题的，就是到解析的时候，解析不出来，直接抛出异常。当然针对这个问题，有两种解决方案：更改jwt的工具类；改解析token的代码

当然，我选择的是前者

可以参考我的jwt工具类

    //    这个方法的作用是生成令牌字符串，根据userId生成，生成令牌三个素材：密钥 过期时间 userId
    public String createToken(int userId){
//        对日期做偏移，算一下5天后的日期。new Date()是当前日期 DateField.DAY_OF_YEAR是偏移单位
//        date是偏移之后的日期
        Date date=DateUtil.offset(new Date(), DateField.DAY_OF_YEAR,expire);
//       创建加密算法密钥的对象，调用Algorithm.HMAC256(secret)的静态工厂方法创建对象
        Algorithm algorithm=Algorithm.HMAC256(secret);
//        执行加密
        JWTCreator.Builder builder= JWT.create();
        String token=builder.withClaim("userId",userId).withExpiresAt(date).sign(algorithm);
        return token;
    }

    //    通过令牌解密出userId
    public int getUserId(String token){
//        解码的对象
        DecodedJWT jwt=JWT.decode(token);
//        通过属性名反向得到userid，asInt()是数据类型
        int userId=jwt.getClaim("userId").asInt();
        return userId;
    }

    //    验证令牌，没有返回值，失败抛异常
    public void verifierToken(String token){
//        创建算法对象
        Algorithm algorithm=Algorithm.HMAC256(secret);
//        用算法对象进行解密
        JWTVerifier verifier=JWT.require(algorithm).build();
//        调用验证方法，传入token
        verifier.verify(token);
    }

最终的结果就是解析成功的，如图

jwt signature does not match locally computed signature. jwt validity cannot,java,spring,servlet,spring boot,intellij-idea

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