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2、JSP代码:
//设置对象Stu stu = new Stu();stu.setName("wgr");stu.setAge(30);request.setAttribute("student", stu);
HttpSession session = request.getSession();session.setAttribute("sex", "man");//设置List<String>List<String> list = new ArrayList<String>();list.add("One");list.add("Two");list.add("Three");session.setAttribute("list", list);//设置List<Object>// List<Stu> stuList = new ArrayList<Stu>();// stuList.add(new Stu("aa", 11));// stuList.add(new Stu("bb", 12));// request.setAttribute("stuList", stuList);//设置Set<Object>Set<Stu> stuList = new HashSet<Stu>();stuList.add(new Stu("aa", 11));stuList.add(new Stu("bb", 12));request.setAttribute("stuList", stuList);//设置Map<Object, Object>;Map<String, Stu> map = new HashMap<String, Stu>();map.put("one", new Stu("aa", 11));map.put("two", new Stu("bb", 12));request.setAttribute("mapStu", map);request.getRequestDispatcher("user.jsp").forward(request,response);}
<body><!-- pageScope requestScope sessionScope applicationScope -->//获取单个属性${requestScope.uid} ----<br /> //EL表达式取值。
//获取对象中设置的${requestScope.student.name} ----- <br /> //EL表达式取值。${sessionScope.sex } ----- <br />//遍历List与Set方式都一样。<c:forEach var="li" items="${list}">${li} <br /></c:forEach>//遍历List或Set集合中对象<c:if test="${stuList != null }"> //判断空<c:forEach var="stu" items="${stuList}">${stu.name} ------ ${stu.age} <br /></c:forEach></c:if>//遍历Map集合中的对象<c:if test="${mapStu != null }"> //判断空<c:forEach var="stu" items="${mapStu}">${stu.key} ------ ${stu.value.name} <br /></c:forEach></c:if></body>
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原文地址：http://blog.csdn.net/sndtb/article/details/45309827
