Caused by: com.opensymphony.xwork2.config.ConfigurationException: Action class [cn.com.action.Produc

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com.opensymphony.xwork2.config.ConfigurationException: Unable to load configuration.

Caused by: com.opensymphony.xwork2.config.ConfigurationException: Action class [cn.com.action.Product] does not have a public no-arg constructor

Caused by: java.lang.NoSuchMethodException: cn.com.action.Product.<init>()

我是struts2的初学者,刚学就出现这个错误!

原因:

类里面缺少无参的构造函数!

如果一个类里面没有任何构造函数,默认是无参的;

如果一个类里面有一个有参数的构造函数,默认的无参构造函数就会被覆盖掉

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转载自blog.csdn.net/qq_37591637/article/details/84893819
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