JavaBean类
package entity;
public class Student {
private boolean flag;//是否接受协议
public Student(){}
public boolean getFlag() {
return flag;
}
public void setFlag(boolean flag) {
this.flag = flag;
}
}
Servlet类
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页面
使用EL表达式获取JAVABEAN的属性值
${student.flag}
使用:
是否接受协议:<br/>
<c:if test="${student.flag eq false }">
<c:out value="不接受协议" ></c:out>
</c:if>
<c:if test="${student.flag eq true }">
<c:out value="接受协议" ></c:out>
</c:if>
如果student类中有List类型的属性list,在Jsp页面中遍历
<c:if test="${not empty student.list}">
<c:forEach var="obj" items="${student.list}">
${obj}<br/>
</c:forEach>
</c:if>
如果student类中有Map类型的属性map,在Jsp页面中遍历
<c:if test="${not empty student.map}">
<c:forEach var="obj" items="${student.map}">
${obj.key}<br/>
</c:forEach>
</c:if>