谢谢tripofdream,但是我这里报错,说Enumeration未找到?大家知道这是为什么吗,我只安装了jdk1.3.1,和tomcat,是不是少了什么东西?Error: 500 Location: /cctv/test.jsp Internal Servlet Error:org.apache.jasper.JasperException: Unable to compile class for JSPC:\jakarta_tomcat\work\localhost_8080%2Fcctv\_0002ftest_0002ejsptest_jsp_36.java:61: Class Enumeration not found. Enumeration test=request.getParameterNames(); ^ 1 error at org.apache.jasper.compiler.Compiler.compile(Compiler.java:282) at org.apache.jasper.servlet.JspServlet.doLoadJSP(JspServlet.java:612) at org.apache.jasper.servlet.JasperLoader12.loadJSP(JasperLoader12.java:146) at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:542) at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:258) at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:268) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405) at org.apache.tomcat.core.Handler.service(Handler.java:287) at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372) at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797) at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743) at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:213) at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416) at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501) at java.lang.Thread.run(Thread.java:484)
String name;
Enumeration test=request.getParameterNames();
while(test.hasMoreElements()){
name=(String)test.nextElement();
out.println(name+"="+request.getParameter(name));
out.println("<br>");
}
Enumeration类的hasMoreElements()和nextElement()方法
Location: /cctv/test.jsp
Internal Servlet Error:org.apache.jasper.JasperException: Unable to compile class for JSPC:\jakarta_tomcat\work\localhost_8080%2Fcctv\_0002ftest_0002ejsptest_jsp_36.java:61: Class Enumeration not found.
Enumeration test=request.getParameterNames();
^
1 error at org.apache.jasper.compiler.Compiler.compile(Compiler.java:282)
at org.apache.jasper.servlet.JspServlet.doLoadJSP(JspServlet.java:612)
at org.apache.jasper.servlet.JasperLoader12.loadJSP(JasperLoader12.java:146)
at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:542)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:258)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:268)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
at org.apache.tomcat.core.Handler.service(Handler.java:287)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:213)
at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
at java.lang.Thread.run(Thread.java:484)
......
java.util.Enumeration test=request.getParameterNames();