servlet 给 jsp 传数组 jsp里怎么接收？

Question

servlet传个数组给jsp 该怎么写？

String [] a 里面有3个值

jsp页面获取这数组里面值的话该怎么写？

jsp里 getAttribute的话 该怎么附值？

Answer 1

1.servlet:
request.setAttribute("objectname",objectvalue);
getServletContext().getRequestDispatcher(a.jsp).forward(request, response);

a.jsp
object=(objectname)request.getAttribute("objectname");
2.servlet:
request.setAttribute("objectname",object);
getServletContext().getRequestDispatcher(a.jsp).forward(request, response);

a.jsp:
aaa =(objectype)request.getAttribute("objectname");

Answer 2

getAttributet取值的时候强制类型转换成String[]类型的,前面再定义一个String[]的变量接收就行了
String[] str = (String[])request.getAttribute("abc");本回答被提问者和网友采纳

Answer 3

jstl:
<c:forEach items="${arrayName}" value="element">
<c:out value="${element}"/>
</c:forEach>

古老jsp内嵌java代码：

<%
String[] list= (String[])request.getAttribute("arrayName");

if(list!=null){
for(int i=0;i<list.length;i++)
request.setAttribute("index",i);
%>

<text value="${arrayName[index]}"/>

<%

}

%>