请教一下，是不是BEANS首先要在JAVA环境下运行，把生成的字节码文件粘到WEBAPPS/WEB-INF/CLASSES下，然后再IE的地址栏里头打上http://localhost:8080/文件名.JSP就行啦
如果是这样的话,那我的怎么就不行呢?
学到这里就卡住拉,比较急请各位大侠帮忙

大姐！！！！bean在web中不可以直接使用，你只能在JSP中或servlet中调用，如果你写的是servlet，你的在web.xml中配置！OK明白了吗？如果不明白，在留言!

我是在JSP中调用的，上面的JAVABEAN运行步骤有问题吗，它的ID是这样设置的[jsp：useBean class = "yourBeanName（也就是你的class文件）" id = "thebean" scope = "session"

我相知道出错的信息是什么？还有一样，javaBean在放入classes后，应用服务器必须重新起动！
我的QQ是15934543，还是不明白加我！加入时请说明“我是java爱好者“，那我才加知道你是谁！

写好的bin得进行配置的!!!!!!!!!!!
具体使用得引用正确

不是直接用的

HTTP Status 500 -

---

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

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

No Java compiler was found to compile the generated source for the JSP. 
This can usually be solved by copying manually $JAVA_HOME/lib/tools.jar from the JDK 
to the common/lib directory of the Tomcat server, followed by a Tomcat restart. 
If using an alternate Java compiler, please check its installation and access path.

	org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:128)
	org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:351)
	org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:413)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:453)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:437)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:555)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:291)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:856)

note The full stack trace of the root cause is available in the Tomcat logs.

---

Apache Tomcat/5.0.12