java 如何在新行中打印 JSTL 迭代值
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How to Print JSTL iteration values in a new line
提问by String
I have a String like below:
我有一个像下面这样的字符串：
String emps="date1,date2,date3,date4";
String emps="date1,date2,date3,date4";
My requirement is to print like below on a jsp page using JSTL tags:
我的要求是使用 JSTL 标签在 jsp 页面上打印如下：
OutPut Should be:
date1
日期1
date2
日期2
date3
日期3
date4
日期 4
I have used the below code in my jsp:
我在我的jsp中使用了以下代码：
<c:set var="string2" value="${fn:split(emps,',')}" />
<c:forEach items="${string2}" var="emps1">
<td><c:out value="${emps1}"/></td>
</c:forEach>
But my code is removing "," this and printing like below in a single line:
但是我的代码正在删除“，”这个并在一行中打印如下：
date1 date2 date3 date4
Could any one give me a solution that ,how to print the date values line by line in a jsp using jstl tags?
谁能给我一个解决方案，如何使用jstl标签在jsp中逐行打印日期值？
thanks
谢谢
Update:
更新：
<c:when test="${requestScope.size!=0}">
<table border="1">
<tr>
<th>Employee Code</th>
<th>EmployeeName</th>
<th>EmployeeDepartment</th>
<th>AbsentDate</th>
<th>TotalNOOfAbsentDates</th>
</tr>
<c:forEach items="${requestScope.set1}" var="emps">
<tr>
<td><c:out value="${emps[0]}" /></td>
<td><c:out value="${emps[1]}" /></td>
<td><c:out value="${emps[2]}" /></td>
<td><c:out value="${emps[4]}" /></td>
<c:set var="string2" value="${fn:split(emps[3],',')}" />
<c:forEach items="${string2}" var="emps1">
<td>
<p><c:out value="${emps1}"/></p>
</td>
</c:forEach>
</tr>
</c:forEach>
Note:I want to print
注意：我要打印
this(Iteration) 数据逐行使用<td><td>标签？回答by Kevin Bowersox
I would split the Stringinto a Listoutside of your .jsp, then place this Listinto the request. Depending on your surrounding markup you can use a number of ways to put the items on a new line such as <br/>, <div>or <p>.
我会将其拆分String为List.jsp的外部，然后将其List放入请求中。根据您周围的标记，您可以使用多种方法将项目放在新行上，例如<br/>,<div>或<p>。
Java
爪哇
String emps="date1,date2,date3,date4";
List<String> empList = new ArrayList<String>(Arrays.asList(emps.split(",")));
request.setAttribute("empList", empList);
JSTL
JSTL
<c:forEach items="${empList}" var="emp">
<div><c:out value="${emp}"/></div>
</c:forEach>
回答by bsiamionau
Your requirements looks little strange, but if you want to output it with table...
你的要求看起来有点奇怪，但是如果你想用表格输出它......
<table>
<c:set var="string2" value="${fn:split(emps,',')}" />
<c:forEach items="${string2}" var="emps1">
<tr>
<td><c:out value="${emps1}"/></td>
</tr>
</c:forEach>
</table>
I hope I got your question correctly
我希望我正确回答了你的问题
upd:
更新：
Try to run next code:
尝试运行下一个代码：
<table>
<c:set var="sourceString" value="${fn:split('q,w,e,r,t,y',',')}" />
<c:forEach items="${sourceString}" var="element">
<tr>
<td><c:out value="${element}"/></td>
</tr>
</c:forEach>
</table>
It works fine for me (it outputs each letter in new row) and I sure that it would work for you. Check out your html code and try to run this code to be sure, that it works.
它对我来说很好用（它在新行中输出每个字母），我相信它对你有用。检查您的 html 代码并尝试运行此代码以确保它有效。
upd2:
更新2：
Finally your code would look like this:
最后你的代码看起来像这样：
<table border="1">
<tr>
<th>Employee Code</th>
<th>EmployeeName</th>
<th>EmployeeDepartment</th>
<th>AbsentDate</th>
<th>TotalNOOfAbsentDates</th>
</tr>
<c:forEach items="${requestScope.set1}" var="emps">
<tr>
<c:set var="string2" value="${fn:split(emps[3],',')}" />
<c:forEach items="${string2}" var="emps1">
<td><c:out value="${emps[0]}" /></td>
<td><c:out value="${emps[1]}" /></td>
<td><c:out value="${emps[2]}" /></td>
<td><c:out value="${emps1}"/></td>
<td><c:out value="${emps[4]}" /></td>
</c:forEach>
</tr>
</c:forEach>
</table>
Your mistake was to mix <tr>tags wits <td>. This code would generate row for each absent date, is it actually what you want?
你的错误是混合<tr>标签机智<td>。此代码将为每个缺席日期生成行，它实际上是您想要的吗？
upd3:If you want to output all this dates in only cell (it looks little ugly), use it:
upd3：如果您只想在单元格中输出所有这些日期（看起来有点难看），请使用它：
<table border="1">
<tr>
<th>Employee Code</th>
<th>EmployeeName</th>
<th>EmployeeDepartment</th>
<th>AbsentDate</th>
<th>TotalNOOfAbsentDates</th>
</tr>
<c:forEach items="${requestScope.set1}" var="emps">
<tr>
<td><c:out value="${emps[0]}" /></td>
<td><c:out value="${emps[1]}" /></td>
<td><c:out value="${emps[2]}" /></td>
<td>
<c:set var="string2" value="${fn:split(emps[3],',')}" />
<c:forEach items="${string2}" var="emps1">
<p>
<c:out value="${emps1}"/>
</p>
</c:forEach>
</td>
<td><c:out value="${emps[4]}" /></td>
</tr>
</c:forEach>
</table>
回答by Horizon
Just like, Kevin Bowersox pointed out, I would use either a <div>or <p>or <br />tag inside the <TD>
就像 Kevin Bowersox 指出的那样，我会在里面使用<div>or<p>或<br />标签<TD>
