In Eclipse, the code is correct, but there is a red fork __eclipse related use

The first is the possibility of:

The compiler does not respond, you can do the following

First step: Ctrl + a-----------Select all
Step two: Ctrl+x-----------Shearing
Step three: Ctrl + V-----------Paste
Fourth step: Ctrl+s-----------Preservation

A repeat of the code to cut and copy.

If the above operation is not valid.

That might be your IDE problem.
It is not considered to be the correct label or content.

The second type:

It's OK to set it in the MyEclipse. Windows--preferences--myeclipse--validation--struts2 validtor get rid of build effectiveness. -----at the time it was myeclipse, eclipse should be the same operation.