我有以下格式的HTML標籤:Struts 2的文本字段標籤與屬性和沒有價值
<input type="text" name="username" id="username" placeholder="Enter your username" required>
我想它由Struts標籤呈現轉換(以便驗證錯誤,頁面重新加載)由用戶輸入的值:
<s:textfield name="username" id="username" placeholder="Enter your username" required />
不幸的是,支柱拋出以下異常:
org.apache.jasper.JasperException: /index.jsp(58,110) PWC6212: equal symbol expected
at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:49)
at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:344)
at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:101)
at org.apache.jasper.compiler.Parser.parseAttribute(Parser.java:220)
at org.apache.jasper.compiler.Parser.parseAttributes(Parser.java:170)
at org.apache.jasper.compiler.Parser.parseCustomTag(Parser.java:1394)
at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1636)
at org.apache.jasper.compiler.Parser.parse(Parser.java:152)
at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:210)
at org.apache.jasper.compiler.ParserController.parse(ParserController.java:111)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:157)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:370)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:595)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:344)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:457)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:351)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:917)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:398)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:185)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:88)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:217)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:185)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:369)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:100)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
我在猜測Struts不喜歡「必需」沒有價值。我如何編輯我的Struts標籤來追加沒有值的「必需」文本?我們有一個現有的JavaScript庫,它依賴於「required」而不是「required =」「」或別的東西。
你爲什麼不只是使用'input' – Jaiwo99