在 servlet 中:
List<myItem> yourObjectToReturn = search.parserContent();
request.setAttribute("yourObjectToReturn",yourObjectToReturn);
数组 yourObjectToReturn 包含 3 个变量(id、txtfile、sentence),您可以从中看到 myItem 类
public class myItem{
String sentence;
int id;
String txtfile;
// public myItem(){
// }
public int getId(){
return id;
}
public void setId(int id){
this.id = id;
}
public String getTxtfile(){
return txtfile;
}
public void setTxtfile(String txtfile){
this.txtfile = txtfile;
}
public String getSentence(){
return sentence;
}
public void setSentence(String sentence){
this.sentence = sentence;
}
}
如何在JSP中分别显示id、txtfile、sentence?如何将数组列表从 servlet 传递到 JSP 。
JSP:如何编辑我的 JSP。我的 JSP 出现错误:
type safety: unchecked cast from objectto arraylist
<%@ page import="java.io.*" %>
<%@ page import="java.net.*" %>
<%@ page import="java.util.*" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<% List<myItem> myList = (ArrayList<myItem>) request.getAttribute("yourObjectToReturn"); %>
The search Result SENTENCE IS: <%=myList %> --%>
</body>
</html>
最佳答案
不要在 jsp 页面中使用 scriptlet。 通过以下方式包含 JSTL 标准标记库:
<%@ taglib uri='http://java.sun.com/jsp/jstl/core' prefix='c'%>
然后在您的 JSP 中使用迭代标记:
<c:forEach items="${requestScope.yourObjectToReturn}" var="current">
<c:if test="${current.sentence== 'secret' }">
<h1>seeeeeeeeeecret revealed</h1>
</c:if>
</c:forEach>
地点:
${requestScope.yourObjectToReturn} is your collection object.
并且(在每次迭代期间):
${current} is your actual element.
如需进一步引用,请查看http://docs.oracle.com/javaee/5/tutorial/doc/bnahq.html
为了避免奇怪的错误:不要忘记导入 myItem
类(实际上应该是 MyItem
,你...)
编辑:在深入研究 JSTL 之前,我建议您阅读 this other question 。特别关注所选答案,它提供了很好的见解。
关于java - 如何将数组列表从servlet传递到JSP?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40080576/