The JSP specification requires that an attribute name is preceded by whitespace

全部的异常代码：

org.apache.jasper.JasperException: /list.jsp (line: 1, column: 85) The JSP specification requires that an attribute name is preceded by whitespace

at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:42)
	at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:443)
	at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:89)
	at org.apache.jasper.compiler.Parser.parseAttributes(Parser.java:164)
	at org.apache.jasper.compiler.Parser.parseAttributes(Parser.java:183)
	at org.apache.jasper.compiler.ParserController.getPageEncodingForJspSyntax(ParserController.java:479)
	at org.apache.jasper.compiler.ParserController.determineSyntaxAndEncoding(ParserController.java:420)
	at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:190)
	at org.apache.jasper.compiler.ParserController.parseDirectives(ParserController.java:119)
	at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:194)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:374)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:354)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:341)
	at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:662)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:364)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:747)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:485)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:410)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:337)
	at com.lv.comm.DispatcherServlet.doGet(DispatcherServlet.java:101)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at com.lv.filter.CharsetEncodeFilter.doFilter(CharsetEncodeFilter.java:42)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)

　　然后发现是：木有大空格隔开  有个空格就好了