如何在JSP中的两个变量之间插入空格？ [英] How to insert a space between two variables in JSP?

问题描述

 < c：forEach var = entryitems =$ {set}> 
< input type =checkboxname =thingvalue =$ {entry.key} $ {entry.value}> 
< / c：forEach> 
  

然而，键和值之间的空间 $ {entry.key提交表单时，} $ {entry.value} 会丢失。我已经尝试在 之前使用 \ ，在这种情况下， \ 和 在提交时仍然存在。

Java EL似乎不保留孤立的空间，是吗？如果是这样，是否有一个有效的解决方法？

编辑：这是如此愚蠢的我，非常感谢克苏鲁。但是我还是不明白添加 \ 后的行为。为什么会导致空间显示？

解决方案

您可以使用以下内容插入空格：& nbsp;

字符实体引用

编辑：似乎是空间处理方式中的一个错误EL语法分析器，所以你应该使用html实体，比如& nbsp; 或其他概述 此处 。

I have one line of html in a form on a JSP page like this:

<c:forEach var="entry" items="${set}">
    <input type="checkbox" name="thing" value="${entry.key} ${entry.value}">
</c:forEach>

However, the space between the key and the value ${entry.key} ${entry.value} is lost when the form is submitted. I've tried using a \ before the , in that case both the \ and the are still there when submitting.

It seems that Java EL does not preserve isolated spaces, is that right? If so, is there a valid workaround?

EDIT: This is so silly of me, many thanks to Cthulhu. But I still don't understand the behavior after adding a \. Why would that cause the space to show?

解决方案

You can insert white-spaces using:  

Character Entity References

Edit: Seems to be a bug in the way spaces are handled by the EL parser, so you should use either html entities like   or the other ways outlined here.

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