在jsp頁面使用el表示式獲取javaBean屬性值
阿新 • • 發佈:2019-02-03
JavaBean類
package entity;
public class Student {
private boolean flag;//是否接受協議
public Student(){}
public boolean getFlag() {
return flag;
}
public void setFlag(boolean flag) {
this.flag = flag;
}
}
Servlet類
public class StudentServlet extends HttpServlet { private static final long serialVersionUID = 1L; protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doPost(request,response); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Student student = new Student(); student.setFlag(false); request.setAttribute("student", student); request.getRequestDispatcher("student.jsp").forward(request, response); } }
jsp頁面
使用EL表示式獲取JAVABEAN的屬性值
${student.flag}
使用:
是否接受協議:<br/>
<c:if test="${student.flag eq false }">
<c:out value="不接受協議" ></c:out>
</c:if>
<c:if test="${student.flag eq true }">
<c:out value="接受協議" ></c:out>
</c:if>
如果student類中有List型別的屬性list,在Jsp頁面中遍歷
<c:if test="${not empty student.list}">
<c:forEach var="obj" items="${student.list}">
${obj}<br/>
</c:forEach>
</c:if>
如果student類中有Map型別的屬性map,在Jsp頁面中遍歷
<c:if test="${not empty student.map}"> <c:forEach var="obj" items="${student.map}"> ${obj.key}<br/> </c:forEach> </c:if>