Jak stosować zastępczy HTML z wiosennym <form:input> tagu na stronie jsp

Question

Używam tego wiersza kodu na stronie jsp:

<tr> 
<td> <form:label path="formDescription.daySchedule"> 
<spring:message code="label.input.daySchedule"/> </form:label> 
</td> 
<td> <form:input path="formDescription.daySchedule" placeholder="<spring:message code="label.input.dayScheduleExample"/>" /> 
</td> 
<td><form:errors path="formDescription.daySchedule"/> 
</td> 
</tr> 

chcę używać HTML placeholder tag do renderowania przykład w polu tekstowym, ale problem, który Chcę renderować go w różnych językach. Ale to daje mi błąd, gdy próbuję renderowania strony:

Aug 04, 2013 6:54:11 PM org.apache.catalina.core.StandardWrapperValve invoke 
SEVERE: Servlet.service() for servlet [appServlet] in context with path [/web] threw exception [/WEB-INF/views/input.jsp(103,258) equal symbol expected] with root cause 
org.apache.jasper.JasperException: /WEB-INF/views/input.jsp(103,258) equal symbol expected 
    at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:41) 
    at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407) 
    at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:88) 
    at org.apache.jasper.compiler.Parser.parseAttribute(Parser.java:217) 
    at org.apache.jasper.compiler.Parser.parseAttributes(Parser.java:162) 
    at org.apache.jasper.compiler.Parser.parseAttributes(Parser.java:153) 
    at org.apache.jasper.compiler.Parser.parseCustomTag(Parser.java:1236) 
    at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1450) 
    at org.apache.jasper.compiler.Parser.parseBody(Parser.java:1662) 
    at org.apache.jasper.compiler.Parser.parseOptionalBody(Parser.java:1002) 
    at org.apache.jasper.compiler.Parser.parseCustomTag(Parser.java:1274) 
    at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1450) 
    at org.apache.jasper.compiler.Parser.parse(Parser.java:138) 
    at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:239) 
    at org.apache.jasper.compiler.ParserController.parse(ParserController.java:102) 
    at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:197) 
    at org.apache.jasper.compiler.Compiler.compile(Compiler.java:372) 
    at org.apache.jasper.compiler.Compiler.compile(Compiler.java:352) 
    at org.apache.jasper.compiler.Compiler.compile(Compiler.java:339) 
    at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:594) 
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:344) 
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391) 
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684) 
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471) 
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402) 
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329) 
    at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238) 
    at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:263) 
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1208) 
    at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:992) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936) 
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) 
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) 
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) 
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:183) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:125) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) 
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) 
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) 
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395) 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250) 
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188) 
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:166) 
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) 
    at java.lang.Thread.run(Thread.java:722) 

Answer 1

Myślę, że nie można użyć znacznika wewnątrz innego znacznika. Spróbuj z języka ekspresji JSP (EL):

<spring:message code="label.input.dayScheduleExample" var="dayScheduleExample"/> 

<tr> 
<td> <form:label path="formDescription.daySchedule"> 
<spring:message code="label.input.daySchedule"/> </form:label> 
</td> 
<td> <form:input path="formDescription.daySchedule" placeholder="${dayScheduleExample}" /> 
</td> 
<td><form:errors path="formDescription.daySchedule"/> 
</td> 
</tr> 

Answer 2

Chyba asp znaczników jest źle tutaj:

placeholder="<spring:message code="label.input.dayScheduleExample"/>" 

Wymień go:

placeholder='<spring:message code="label.input.dayScheduleExample"/>' 

Począwszy od Tagi formularza w Spring 3 obsługują dynamiczne atrybuty.

Answer 3

pracuje dla mnie, Dodałem zastępczy atrybutu z JavaScript/jQuery, jak poniżej:

$("#myID").attr('placeholder', '<spring:message code="myCode"/>');