缺setter异常

时间：2016-09-07 10:32:34 阅读：132 评论：0 收藏：0 [点我收藏+]

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严重: StandardWrapper.Throwable
org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘urlMapping‘ defined in ServletContext resource [/WEB-INF/web-config.xml]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userAction‘ defined in ServletContext resource [/WEB-INF/web-config.xml]: Cannot resolve reference to bean ‘userService‘ while setting bean property ‘userService‘; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userService‘ defined in ServletContext resource [/WEB-INF/service-config.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property ‘userDao‘ of bean class [com.sxt.service.UserService]: Bean property ‘userDao‘ is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userAction‘ defined in ServletContext resource [/WEB-INF/web-config.xml]: Cannot resolve reference to bean ‘userService‘ while setting bean property ‘userService‘; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userService‘ defined in ServletContext resource [/WEB-INF/service-config.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property ‘userDao‘ of bean class [com.sxt.service.UserService]: Bean property ‘userDao‘ is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userService‘ defined in ServletContext resource [/WEB-INF/service-config.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property ‘userDao‘ of bean class [com.sxt.service.UserService]: Bean property ‘userDao‘ is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?

Caused by: org.springframework.beans.NotWritablePropertyException: Invalid property ‘userDao‘ of bean class [com.sxt.service.UserService]: Bean property ‘userDao‘ is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?

2016-9-6 16:42:53 org.apache.catalina.core.StandardContext loadOnStartup
严重: Servlet /spmvc01 threw load() exception
org.springframework.beans.NotWritablePropertyException: Invalid property ‘userDao‘ of bean class [com.sxt.service.UserService]: Bean property ‘userDao‘ is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?

解决办法：

看错误，从最底层看，最后一个cause by，因为如果最底层出错，上面的也会出错，因为代码是从最底层往上注入的，下面的错了，上面的也就错了，所以先看最底层的。

看到最底层，发现，UserService类中有无效的setter方法，查看UserService，发现里面的set方法确实有问题，忘记写参数了。

一般，get和set方法的生成，最好自动生成，因为自己写的话，容易出错。自动生成的办法：在代码空白处右击-Source-Generate Getters and Setters，然后选择需要生成的方法即可。

缺setter异常

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原文地址：http://www.cnblogs.com/cyy-13/p/5848254.html

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