feign.FeignException: status 400 reading XXX 问题

在微服务架构下,使用SpringBoot和内嵌Tomcat部署的应用遇到Feign GET请求参数超长导致的400错误。本文介绍如何调整Tomcat默认参数限制,解决Feign接口提供端的问题。

背景:项目使用的是微服务架构,采用springboot来开发,所有的服务都是基于内嵌tomcat来运行

问题:项目部署到线上环境之后,有一天突然报错:Feign status 400 reading XXXX content:

原因:get请求参数太长,内嵌tomcat对参数的默认限制是8K
解决:在Feign接口提供端的微服务中修改tomcat对参数的默认值,如下:

server.max-http-header-size=20480
Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: 数据库“Supcon”的事务日志已满,原因为“LOG_BACKUP”。 at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(SQLServerException.java:262) javax.ws.rs.NotFoundException: HTTP 404 Not Found at javax.ws.rs.WebApplicationException.<init>(WebApplicationException.java:162) at javax.ws.rs.ClientErrorException.<init>(ClientErrorException.java:94) at javax.ws.rs.NotFoundException.<init>(NotFoundException.java:58) [2025-05-12 05:20:00,241][ERROR][scheduling-1][com.supcon.supfusion.auth.service.task.AuthOnlionLoginTask][authentication-integration][unknown] - online user check e=org.springframework.jdbc.UncategorizedSQLException: ### Error updating database. Cause: com.microsoft.sqlserver.jdbc.SQLServerException: 数据库“Supcon”的事务日志已满,原因为“LOG_BACKUP”。 ### Cause: com.microsoft.sqlserver.jdbc.SQLServerException: 数据库“Supcon”的事务日志已满,原因为“LOG_BACKUP”。 ; uncategorized SQLException; SQL state [S0002]; error code [9002]; 数据库“Supcon”的事务日志已满,原因为“LOG_BACKUP”。; nested exception is com.microsoft.sqlserver.jdbc.SQLServerException: 数据库“Supcon”的事务日志已满,原因为“LOG_BACKUP”。 at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:89) at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:88) Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: 数据库“Supcon”的事务日志已满,原因为“LOG_BACKUP”。 at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(SQLServerException.java:262) feign.FeignException: status 400 reading TokenClient#refreshToken(String,Map) at feign.FeignException.errorStatus(FeignException.java:78) at com.supcon.supfusion.framework.cloud.rpc.feign.FeignExceptionErrorDecoder.decode(FeignExceptionErrorDecoder.java:34) feign.FeignException: status 400 reading TokenClient#refreshToken(String,Map) at feign.FeignException.errorStatus(FeignException.java:78) at com.supcon.supfusion.framework.cloud.rpc.feign.FeignExceptionErrorDecoder.decode(FeignExceptionErrorDecoder.java:34) feign.FeignException: status 400 reading TokenClient#refreshToken(String,Map) at feign.FeignException.errorStatus(FeignException.java:78) at com.supcon.supfusion.framework.cloud.rpc.feign.FeignExceptionErrorDecoder.decode(FeignExceptionErrorDecoder.java:34) feign.FeignException: status 400 reading TokenClient#refreshToken(String,Map) at feign.FeignException.errorStatus(FeignException.java:78) at com.supcon.supfusion.framework.cloud.rpc.feign.FeignExceptionErrorDecoder.decode(FeignExceptionErrorDecoder.java:34) feign.FeignException: status 400 reading TokenClient#refreshToken(String,Map) at feign.FeignException.errorStatus(FeignException.java:78) at com.supcon.supfusion.framework.cloud.rpc.feign.FeignExceptionErrorDecoder.decode(FeignExceptionErrorDecoder.java:34) feign.FeignException: status 400 reading TokenClient#refreshToken(String,Map) at feign.FeignException.errorStatus(FeignException.java:78) at com.supcon.supfusion.framework.cloud.rpc.feign.FeignExceptionErrorDecoder.decode(FeignExceptionErrorDecoder.java:34) feign.FeignException: status 400 reading TokenClient#refreshToken(String,Map) at feign.FeignException.errorStatus(FeignException.java:78) at com.supcon.supfusion.framework.cloud.rpc.feign.FeignExceptionErrorDecoder.decode(FeignExceptionErrorDecoder.java:34) feign.FeignException: status 400 reading TokenClient#refreshToken(String,Map) at feign.FeignException.errorStatus(FeignException.java:78) at com.supcon.supfusion.framework.cloud.rpc.feign.FeignExceptionErrorDecoder.decode(FeignExceptionErrorDecoder.java:34) feign.FeignException: status 400 reading TokenClient#refreshToken(String,Map) at feign.FeignException.errorStatus(FeignException.java:78) at com.supcon.supfusion.framework.cloud.rpc.feign.FeignExceptionErrorDecoder.decode(FeignExceptionErrorDecoder.java:34) feign.FeignException: status 400 reading TokenClient#refreshToken(String,Map) at feign.FeignException.errorStatus(FeignException.java:78) at com.supcon.supfusion.framework.cloud.rpc.feign.FeignExceptionErrorDecoder.decode(FeignExceptionErrorDecoder.java:34) feign.FeignException: status 400 reading TokenClient#refreshToken(String,Map) at feign.FeignException.errorStatus(FeignException.java:78) at com.supcon.supfusion.framework.cloud.rpc.feign.FeignExceptionErrorDecoder.decode(FeignExceptionErrorDecoder.java:34) feign.FeignException: status 400 reading TokenClient#refreshToken(String,Map) at feign.FeignException.errorStatus(FeignException.java:78) at com.supcon.supfusion.framework.cloud.rpc.feign.FeignExceptionErrorDecoder.decode(FeignExceptionErrorDecoder.java:34)
05-13
com.supcon.supfusion.framework.cloud.common.exception.BizException: [100000007]APP安装器服务异常,请联系系统管理员 at com.supcon.supfusion.framework.cloud.rpc.feign.FeignExceptionErrorDecoder.decode(FeignExceptionErrorDecoder.java:75) at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:149) at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:78) at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:103) at com.sun.proxy.$Proxy299.clearInstallingTaskByApp(Unknown Source) at com.supcon.orchid.entityconf.services.imps.AppTaskServiceImpl.createTask(AppTaskServiceImpl.java:297) at com.supcon.orchid.entityconf.services.imps.AppTaskServiceImpl.install(AppTaskServiceImpl.java:163) at com.supcon.orchid.entityconf.services.imps.AppTaskServiceImpl.reInstall(AppTaskServiceImpl.java:120) at com.supcon.orchid.entityconf.services.imps.AppTaskServiceImpl.reInstallStart(AppTaskServiceImpl.java:140) at com.supcon.orchid.entityconf.services.imps.AppTaskServiceImpl.task(AppTaskServiceImpl.java:82) at com.supcon.orchid.entityconf.services.impl.ModuleAppInstallTaskService.doAppInstall(ModuleAppInstallTaskService.java:77) at com.supcon.orchid.entityconf.services.impl.ModuleAppInstallTaskService.access$200(ModuleAppInstallTaskService.java:36) at com.supcon.orchid.entityconf.services.impl.ModuleAppInstallTaskService$InstallTask.call(ModuleAppInstallTaskService.java:130) at com.supcon.orchid.entityconf.services.impl.ModuleAppInstallTaskService$InstallTask.call(ModuleAppInstallTaskService.java:113) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: feign.FeignException: status 500 reading AppInstallerService#clearInstallingTaskByApp(String) at feign.FeignException.errorStatus(FeignException.java:78) at feign.codec.ErrorDecoder$Default.decode(ErrorDecoder.java:93) at com.supcon.supfusion.framework.cloud.rpc.feign.FeignExceptionErrorDecoder.decode(FeignExceptionErrorDecoder.java:34) ... 19 common frames omitted
07-05
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