<c:forEach items="${datalist}" var="member"> 如何传递参数
时间: 2023-08-21 19:07:05 浏览: 65
您可以使用<c:set>标签设置参数的值,然后在<c:forEach>标签中使用${}来引用参数。例如:
<c:set var="param1" value="value1"/>
<c:set var="param2" value="value2"/>
<c:forEach items="${datalist}" var="member">
<c:someTag param1="${param1}" param2="${param2}"/>
</c:forEach>
在这个例子中,<c:someTag>是您想要使用参数的标签,param1和param2是您想要传递的参数名称,${param1}和${param2}是对应的参数值。
相关问题
<c:forEach items="${datalist}" var="member"> jsp中这个标签如何传参
<c:forEach>标签中有许多属性可以用来传递参数,下面是一些常用的属性:
- items:指定要迭代的集合或数组
- var:指定迭代过程中每个元素的变量名
- varStatus:指定迭代过程中计数器的变量名
- begin:指定迭代的起始位置
- end:指定迭代的结束位置
- step:指定每次迭代的步长
下面是一个示例:
```
<c:forEach items="${datalist}" var="member">
<c:set var="param1" value="${member.param1}"/>
<c:set var="param2" value="${member.param2}"/>
<mytaglib:someTag param1="${param1}" param2="${param2}"/>
</c:forEach>
```
在这个例子中,<c:forEach>标签迭代名为datalist的集合,将每个元素赋值给变量member。然后,在每次迭代中,<c:set>标签设置参数的值,然后您可以在<mytaglib:someTag>标签中使用这些参数。
<c:forEach items="" var="">
This is a JSTL (JavaServer Pages Standard Tag Library) tag used in JSP (JavaServer Pages) to iterate over a collection of objects.
The "items" attribute specifies the collection of objects to be iterated over, and the "var" attribute specifies the variable name used to store each object in the collection during each iteration.
For example, if we have a list of names in a variable called "namesList", we can use the forEach tag to iterate over each name in the list and print it out:
<c:forEach items="${namesList}" var="name">
${name}
</c:forEach>
In the above example, ${namesList} is an expression that evaluates to the list of names we want to iterate over, and "name" is the variable name we're using to store each name during each iteration. The ${name} expression is used to print out the current name during each iteration.
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