Bean property 'username' is not readable or has an invalid getter method
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Invalid property 'username' of bean class [com.bbk.entity.User]: Bean property 'username' is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter?
首先，jsp中字段名称java bena的属性一样。
其次，不是看java bean中字段的值是不是一样，要看getter和setter是否一致。
最后，由于涉及到添加 spring.tld spring-form.tld的问题，所以有可能有spring版本的问题。
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