控制器无法扩展课程

Question

I'm getting a nullPointerException with the constructor below... I've also included the parent class.

SEVERE: Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'contentController' defined in file [C:\Users\bkuhl\JavaProjects\cmt\cmt\target\cmt\WEB-INF\classes\com\site\cmt\web\ContentController.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.fettergroup.cmt.web.ContentController]: Constructor threw exception; nested exception is java.lang.NullPointerException

And the class (constructor was left out so that it would use the parent constructor)

public class ContentController extends com.site.cmt.library.Controller {
     ...
}

and the parent class

public class Controller {
    private SortedMap<Integer, String> cssFiles;
    private SortedMap<Integer, String> jsFiles;

    public Controller () {
        this.addCss("global.css");
        this.addJs("global.js");
    }
    ....

Answer 1

您是否尝试过省略addCss和addJs以确保问题不在实现方法之内？