JSP：如何將對象數組從JSP傳遞到JSP

如何將對象數組（Mcq [] mcq）從servlet傳遞到JSP？如何在jsp中使用taglib從對象數組中提取數據？JSP：如何將對象數組從JSP傳遞到JSP

CLASS：

public class Mcq { 
private String question; 
private String choice_1; 
private String choice_2; 

/* GETTERS AND SETTERS */ 
}

CONTROLLER：

String question, choice_1, choice_2; 
Mcq[] mcq = new Mcq[100]; 

for(int i=0; i<mcqCount; i++){ 
    question = request.getParameter("mcq-question-"+i); 
    choice_1 = request.getParameter("mcq-choice-"+i); 
    choice_2 = request.getParameter("mcq-choice-"+i); 
    mcq[i].setQuestion(question); 
    mcq[i].setChoice_1(choice_1); 
    mcq[i].setChoice_2(choice_2); 
} 

request.getSession().setAttribute("mcq", mcq);  
RequestDispatcher dispatcher; 
dispatcher = request.getRequestDispatcher("testpage.jsp"); 
dispatcher.forward(request, response);

HTML（testpage.jsp）：

<body> 
    <h1>   
     Question: ${mcq.getQeustion()} 
     Choice-1: ${mcq.getChoice_1()} 
     Choice-2: ${mcq.getChoice_2()} 
    </h1> 
</body>

來源

2014-12-06 fhaider

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>  
    <body> 
     <h1> 
      <c:forEach var="mcq" items="${mcq}"> 
       Question: ${mcq.question} 
       Choice-1: ${mcq.choice_1} 
       Choice-2: ${mcq.choice_2} 
      </c:forEach> 
     </h1> 
    </body>

的EL 「$ {MCQ}」表達應能夠抓住Mcq已經因爲你讓他們成爲一個會議屬性。

來源

2014-12-06 19:31:09 int21h

JSP：如何將對象數組從JSP傳遞到JSP

回答

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