jdk+Tomcat调用beans的问题！急啊！

Question

c:\Tomcat\webapps\examples\WEB-INF\classes\jsp\beans\test
放到这里试试。

Answer 1

异常:
A Servlet Exception Has Occurred
org.apache.jasper.JasperException: Unable to compile class for JSPNote: sun.tools.javac.Main has been deprecated.
..\work\localhost\examples\_0002fjsp_0002fbean_0002ejspbean_jsp_0.java:57: Class test.helloWorld not found.
                test.helloWorld helloBean = null;
                    ^
..\work\localhost\examples\_0002fjsp_0002fbean_0002ejspbean_jsp_0.java:60: Class test.helloWorld not found.
                    helloBean= (test.helloWorld)
                                    ^
..\work\localhost\examples\_0002fjsp_0002fbean_0002ejspbean_jsp_0.java:65: Class test.helloWorld not found.
                            helloBean = (test.helloWorld) java.beans.Beans.instantiate(this.getClass().getClassLoader(), "test.helloWorld");
                                             ^
3 errors, 1 warning at org.apache.jasper.compiler.Compiler.compile(Compiler.java:294)
at org.apache.jasper.servlet.JspServlet.doLoadJSP(JspServlet.java:478)
at org.apache.jasper.servlet.JasperLoader12.loadJSP(JasperLoader12.java:146)
at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:449)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:159)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:171)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:328)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:407)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:251)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:977)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:196)
at org.apache.catalina.valves.ValveBase.invokeNext(ValveBase.java:242)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:464)
at org.apache.catalina.valves.ValveBase.invokeNext(ValveBase.java:242)
at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:242)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:975)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2041)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.valves.ValveBase.invokeNext(ValveBase.java:242)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:414)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:975)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:159)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:977)
at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:818)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:897)
at java.lang.Thread.run(Thread.java:536)

Answer 2

看来还是你的类没有被tomcat发现，我一般把class文件放在
c:\Tomcat\webapps\root\WEB-INF\classes\jsp\test\HelloWorld.class目录下
那么在jsp中：
<jsp:useBean id=handle class="test.HelloWorld." />
<%=handle.getHi()%>你试试。记得是在root下

Answer 3

不行啊，我把classpath改为：c:\Tomcat\webapps\root\WEB-INF\classes\jsp\
在c:\Tomcat\webapps\root\WEB-INF\classes\jsp\test\下做helloWorld.java和编译了helloWorld.class文件的
但还是出现同样的问题啊？？？？？？？？？？？？？？？？？？？？？
我头都搞大了，真烦的

Answer 4

你的classpath=c:\Tomcat\webapps\root\WEB-INF\classes要这么写。
如果你的HelloWorld.class放在
classpath=c:\Tomcat\webapps\root\WEB-INF\classes\jsp\test\HelloWorld.class的话，HelloWorld.java中一定要加入package jsp.test;这句。
jsp中要做相应的改动
<jsp:useBean id=handle class="jsp.test.HelloWorld." />
<%=handle.getHi()%>