每当我尝试使用& nsbp,我都使用
spring,js和其他技术来实现对于空白,它给我以下错误：
导致：org.apache.jasper.JasperException：/WEB-INF/views/entrada/list.jspx(94,67)实体“nbsp”被引用,但未声明.
at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)
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.JspDocumentParser.parse(JspDocumentParser.java:216)
at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:239)
at org.apache.jasper.compiler.ParserController.parseDirectives(ParserController.java:120)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:165)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:332)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:312)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:299)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:589)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488)
at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968)
at org.apache.jasper.runtime.PageContextImpl.doInclude(PageContextImpl.java:650)
at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:644)
at org.apache.tiles.jsp.context.JspTilesRequestContext.include(JspTilesRequestContext.java:103)
... 106 more
我的代码：
</td>
<td>
<c:forEach items="${entrada.tags}" var="tag">
<spring:url value="/find/ByTags?tags=${tag.id}" var="buscarTag"/>
<a href="${buscarTag}">${tag}</a>
</c:forEach>
</td>
<td><input type="hidden" class="horasIn" value="${entrada.horas}"/>
${fn:substring(entrada.horas,10)}
<c:set var="totalHoras" value="${totalHoras+ entrada.horas }"></c:set>bs
解决方法
尝试将其称为不间断空间的实体号, 
&安培;#160;是一个数字字符引用,可以跨越HTML和XML. &安培; NBSP;是在HTML中定义的character entity reference,而不是XML.您可以将字符引用视为字符的数字表示形式的别名,而在这种情况下(XML),则不会定义别名.
“160”是不间断空间的Unicode代码点的编号.您也可以将数字字符引用写为  (同样的事情,但在十六进制)
