感谢大家给我的回复.现在能运行了;谢谢!!(主要是classpath没设置)感谢., 不过我现在又有一个问题:我怎么做都没用,希望大虾们能帮我一下.谢谢!!!! 问题就是:我写的代码和书上一样.使用javaBean的时候出现下面异常: org.apache.jasper.JasperException: /bean/example01.jsp(6,0) The value for the useBean class attribute Circle is invalid. 做Jdbc-Odbc的时候出现下面异常; org.apache.jasper.JasperException org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) root cause java.lang.NullPointerException org.apache.jsp.SQL.example01_jsp._jspService(example01_jsp.java:73) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
2如果1可以,写一个简单的JSP的页面,看看是否能够执行成功!如果能够能够就没有问题。如果有问题,检查一下环境变量,尤其Java_home和classpath这2个变量
其次,要确保你自己编写的页面放在适当的文件下面.比如可以放在Root下面进行测试.
不过我现在又有一个问题:我怎么做都没用,希望大虾们能帮我一下.谢谢!!!!
问题就是:我写的代码和书上一样.使用javaBean的时候出现下面异常:
org.apache.jasper.JasperException: /bean/example01.jsp(6,0) The value for the useBean class attribute Circle is invalid.
做Jdbc-Odbc的时候出现下面异常;
org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause java.lang.NullPointerException
org.apache.jsp.SQL.example01_jsp._jspService(example01_jsp.java:73)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)