Question

严重: Servlet.service() for servlet [spring] in context with path [] threw exception

严重: Servlet.service() for servlet [spring] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 1 errors
Field error in object 'oneCardSolutionUser' on field 'unit_id': rejected value []; codes [typeMismatch.oneCardSolutionUser.unit_id,typeMismatch.unit_id,typeMismatch.int,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [oneCardSolutionUser.unit_id,unit_id]; arguments []; default message [unit_id]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'int' for property 'unit_id'; nested exception is java.lang.NumberFormatException: For input string: ""]] with root cause
org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 1 errors
Field error in object 'oneCardSolutionUser' on field 'unit_id': rejected value []; codes [typeMismatch.oneCardSolutionUser.unit_id,typeMismatch.unit_id,typeMismatch.int,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [oneCardSolutionUser.unit_id,unit_id]; arguments []; default message [unit_id]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'int' for property 'unit_id'; nested exception is java.lang.NumberFormatException
在同一个jsp页面，登录个人用户，首页不报错，链接也报错。求大神指导

Answer 1

Failed to convert property value of type 'java.lang.String' to required type 'int' for property 'unit_id'; nested exception is java.lang.NumberFormatException

定义是int，传递了 String的值

Answer 2

Failed to convert property value of type 'java.lang.String' to required type 'int' for property 'unit_id

这句说了错误的原因，unit_id 需要个int类型的，结果给了个字符串。