Java JSTL-遍历随机整数数组-不显示在网页中

我试图使用JSP/JSTL遍历随机生成的整数的myList数组。 我的代码snipet生成并存储整数，它位于我的servlet中

另一方面，遍历字符串数组列表see code可以很好地工作，但是当我尝试使用基于相同逻辑的数组时，我的网页上没有显示任何无序的随机整数列表

谢谢你帮助我

我的Servlet

package be.intec.servlets;

    import java.io.IOException;
    import java.math.BigDecimal;
    import java.util.ArrayList;
    import java.util.Arrays;
    import java.util.LinkedHashMap;
    import java.util.List;
    import java.util.Map;

    import javax.servlet.RequestDispatcher;
    import javax.servlet.ServletException;
    import javax.servlet.annotation.WebServlet;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;

    import be.intecbrussel.entities.Auto;

    @WebServlet("/JSTLServlet")
    public class JSTLServlet extends HttpServlet {

        private static final long serialVersionUID = 1L;

        private static final String VIEW = "WEB-INF/JSP/JSTL.jsp";

        protected void doGet(HttpServletRequest request,
                HttpServletResponse response) throws ServletException, IOException {

            RequestDispatcher dispatcher = request.getRequestDispatcher(VIEW);

            //=======below is the code using Array=====================================
            int[] myList = new int[42];
            for (int i = 0; i < myList.length; i++) {
                myList[i] = (int) (Math.random() * 100);
            }
            request.setAttribute("mylist", myList);

            //=======below is the code using ArrayList=====================================


            List<String> names = Arrays.asList("John", "Georges", "Kevin");

            request.setAttribute("names", names);

            dispatcher.forward(request, response);      
        }

    }

浏览器中的输出为：

遍历我的数组： //这里应该显示我的随机数

遍历我的arrayList： //工作得很好

约翰

乔治

凯文

---

您已经在Servlet中使用mylist作为名称，并且希望使用${mylist}获取列表。名称区分大小写

如下所示，分别更改您的：

<c:forEach var="arrayVar" items="${mylist}">
<li>${arrayVar}</li>
</c:forEach>

---

谢谢，我注意到了这一点，尽管我知道jsp/jstl中的大小写敏感性，但我并不认为在这个特定的案例中需要它。感谢我愚蠢的mystake。这确实是另一种选择，但我将保留myList的正字法，以尊重命名约定。谢谢你的帮助

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>ServletsAndJSPExampleProject</display-name>
  <welcome-file-list>
    <welcome-file>IndexServlet</welcome-file>
  </welcome-file-list>

</web-app>

package be.intec.servlets;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/IndexServlet")
public class IndexServlet extends HttpServlet {

    private static final long serialVersionUID = 1L;

    private static final String VIEW = "/WEB-INF/JSP/index.jsp";

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        RequestDispatcher dispatcher = request.getRequestDispatcher(VIEW);

        dispatcher.forward(request, response);

    }


}

<c:forEach var="arrayVar" items="${mylist}">
<li>${arrayVar}</li>
</c:forEach>