jsp頁面報Page directive must not have multiple occurrences of pageencoding

HTTP Status 500 - /jsp/pm/chronologicalBook.jsp (line: 18, column: 1) Page directive must not have multiple occurrences of pageencoding

type Exception report

message /jsp/pm/chronologicalBook.jsp (line: 18, column: 1) Page directive must not have multiple occurrences of pageencoding

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

exception

org.apache.jasper.JasperException: /jsp/pm/chronologicalBook.jsp (line: 18, column: 1) Page directive must not have multiple occurrences of pageencoding
	org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:41)
	org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:291)
	org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:114)
	org.apache.jasper.compiler.Validator$DirectiveVisitor.visit(Validator.java:196)
	org.apache.jasper.compiler.Node$PageDirective.accept(Node.java:580)
	org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2392)
	org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2444)
	org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2450)
	org.apache.jasper.compiler.Node$Root.accept(Node.java:471)
	org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2392)
	org.apache.jasper.compiler.Validator.validateDirectives(Validator.java:1813)
	org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:198)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:372)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:349)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:333)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:600)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:368)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.apache.struts2.result.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:167)
	org.apache.struts2.result.StrutsResultSupport.execute(StrutsResultSupport.java:208)
	com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:366)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:270)
	com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:133)
	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
	com.qianxunkuaiji.filter.LoginInterceptor.intercept(LoginInterceptor.java:58)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
	org.apache.struts2.factory.StrutsActionProxy.execute(StrutsActionProxy.java:54)
	org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:556)
	org.apache.struts2.dispatcher.ExecuteOperations.executeAction(ExecuteOperations.java:81)
	org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:113)

note The full stack trace of the root cause is available in the Apache Tomcat/8.5.11 logs.

答：是不是頁面有兩個pageEncoding定義重複