Pro favor me ajudem,
Não consigo chamar um bean no JSP. Vou dizer os passos que estou fazendo. Desde o zero
Crio um Context no server.xml para minha aplicação.
<Context docBase="teste" path="/teste" reloadable="true" crossContext="true" debug="0">
</Context>
Dentro de webapps agora crio uma pasta chamda teste.
Dentro de teste crio uma pasta chamda WEB-INF.
dentro de WEB-INF, existe a pasta classes e o arquivo web.xml
Crio um arquivo java.
public class User{
public String getNome(){
return("Jefferson martins");
}
}
Salvo este arquivo dentro de WEB-INF/classes/.
Agora criei um arquivo index.jsp
<jsp:useBean id="user" class="User" scope="page"/>
<%= user.getNome() %>
Salvo na pasta teste.
Em seguida modifco o arquivo web.xml que fica assim
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<servlet>
<servlet-name>user</servlet-name>
<servlet-class>User</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>user</servlet-name>
<url-pattern>/User</url-pattern>
</servlet-mapping>
</web-app>
Mas quando vou ver a pagina aparece esta mensagem
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
An error occurred at line: 0 in the jsp file: /zzz.jsp
Generated servlet error:
[javac] Compiling 1 source file
/jakarta/work/Standalone/localhost/teste/zzz_jsp.java:41: cannot resolve symbol
symbol : class User
location: class org.apache.jsp.zzz_jsp
User user = null;
^
An error occurred at line: 0 in the jsp file: /zzz.jsp
Generated servlet error:
/jakarta/work/Standalone/localhost/teste/zzz_jsp.java:43: cannot resolve symbol
symbol : class User
location: class org.apache.jsp.zzz_jsp
user = (User) pageContext.getAttribute("user", PageContext.PAGE_SCOPE);
^
An error occurred at line: 0 in the jsp file: /zzz.jsp
Generated servlet error:
/jakarta/work/Standalone/localhost/teste/zzz_jsp.java:46: cannot resolve symbol
symbol : class User
location: class org.apache.jsp.zzz_jsp
user = (User) java.beans.Beans.instantiate(this.getClass().getClassLoader(), "User");
^
3 errors
at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:130)
at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:293)
at org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:340)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:352)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:474)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:184)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:432)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:386)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:534)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:530)
at java.lang.Thread.run(Thread.java:536)
Pro favor alguém pode me ajudar, estou a muito tempo apanhando para isso.
Vlw