我用的是Eclipse + Tomcat.我建立的是Tomcat项目.在WEB-INF/src下建立了包ufrog之后建立Circle.java.实际文件夹WEB-INF/classes/ufrog下已经编译好了Circle.class.<!-- Circle.java -->
package ufrog;public class Circle {
private int radii; public int getRadii() {
return radii;
}
public void setRadii(int r) {
radii=r;
}
}<!-- index.jsp -->
<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import="ufrog.Circle;" %><jsp:useBean id="cir" class="Circle" scope="page"></jsp:useBean>
<jsp:setProperty property="5" name="radii" /><%
out.println("半径是 "+ cir.getRadii());
%>index.jsp是放在项目的根目录下现在启动Tomcat之后出现问题
org.apache.jasper.JasperException: /index.jsp(4,0) The value for the useBean class attribute Circle is invalid.
又或是
org.apache.jasper.JasperException: Unable to load class for JSP我是刚开始接触jsp的开放.不知道Eclipse里面是不是也要进行甚么配置.望XD指教
package ufrog;public class Circle {
private int radii; public int getRadii() {
return radii;
}
public void setRadii(int r) {
radii=r;
}
}<!-- index.jsp -->
<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import="ufrog.Circle;" %><jsp:useBean id="cir" class="Circle" scope="page"></jsp:useBean>
<jsp:setProperty property="5" name="radii" /><%
out.println("半径是 "+ cir.getRadii());
%>index.jsp是放在项目的根目录下现在启动Tomcat之后出现问题
org.apache.jasper.JasperException: /index.jsp(4,0) The value for the useBean class attribute Circle is invalid.
又或是
org.apache.jasper.JasperException: Unable to load class for JSP我是刚开始接触jsp的开放.不知道Eclipse里面是不是也要进行甚么配置.望XD指教
如果还不行,再将<%@ page import="ufrog.Circle;" %>删除试试
class为全路径
<jsp:setProperty name="cir" property="radii" value="5" />
<%
cir.setRadii(7);
out.println(cir.getRadii);
%>
又报错了