java - JSP "cannot be resolved to a type", "unable to compile"

Question

我做了一个 Tomcat 项目，但我遇到了问题；我不能使用自己的类(class)。 这是一个例子:

MyContext/test.jsp

<%@page language="java" import="myPackage.*" %>
<%=new MyClass()%>

MyContext/WEB-INF/MyPackage/MyClass.java

package myPackage;
import java.util.*;

public class MyClass{
    public String toString(){
        return "this is the string from my class!";
    }
}

目录树:

MyContext
|---test.jsp
`---WEB-INF
    `---classes
        `---myPackage
            |---MyClass.class
            `---MyClass.java

访问 MyContext/test.jsp 时出现错误:

org.apache.jasper.JasperException: Unable to compile class for JSP: 

An error occurred at line: 2 in the jsp file: /test.jsp
MyClass cannot be resolved to a type
1: <%@page language="java" import="myPackage.*" %>
2: <%=new MyClass()%>


Stacktrace:
    org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:103)
    org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:366)
    org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:468)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:378)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:353)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:340)
    org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:657)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:727)

我的环境是 Ubuntu 服务器 14.04， Java 版本 1.7.0_55， Tomcat 7。

请帮帮我。

Answer 1

更改MyClass.java

将 package myPackage 更改为 MyPackage