There is no Action mapped for action name mylogin! Regist error cause, mappedmylogin

There is no Action mapped for action name mylogin! Regist error cause, mappedmylogin

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As we all know, you can use DMI (Dynamic Method Invocation, Dynamic Method call) to perform an Action that corresponds to multiple form actions. When trying to log on to and register two form actions tonight, "There is no Action mapped for action name mylogin! The regist error is checked many times. The struts. xml and JSP files are not correct. src can also be compiled, but the above error is always displayed when you click Register.

After more than half an hour of hard work, I finally found the cause. I didn't open the dynamic method call in the configuration item, because Struts2 does not allow the dynamic method call by default. If you find the cause, there are two solutions:

The first is to add the upper and lower sentences in struts. xml:

<Constant name = "struts. enable. DynamicMethodInvocation" value = "true"/>

The second is to create a properties file under src, and add struts. enable. DynamicMethodInvocation = true.

I personally recommend the first method, because the second method is actually reserved to ensure backward compatibility, but the new configuration method is to use xml files for configuration.

There is no Action mapped for namespace/and action name login. It's not done in a day. Please help,

You have configured the web. xml in the options ah, not to add a Struts2-Spring-plugin-2.1.8.1.jar this plug-in can be ah ·~~~ Configure the web. xml file.
 
Form submission and Action in Struts2 framework

The form action should be set to "UserLogin. action ", the interceptor is intercepted according to the Action name, therefore, the package name cannot be added here, you should write in struts. the name of the Action class configured in xml. action.

The error message indicates that the Action class cannot be found.
There is no Action mapped for namespace/and action name XXXXX.-[unknown location]

In the configuration file, you need to configure this Action class. First, take a name for it, which is generally called "UserLogin. action, and then specify a specific class for it, that is, tell Struts that your Action is handled by that class. For example:
<! -- Log on to action -->
<Action name = "Login" class = "struts2.LoginAction">
<Result name = "input"> index. jsp </result>
<Result name = "success"> success. jsp </result>
</Action>
This configuration means that the Action name is Login, which is handled by the LoginAction class under the struts2 package.

It is recommended that you go to the Struts 2 practice book to explain it clearly and easily.