摘要：Struts2提供了安全的服务器验证方法，使用action中的validate方法即可
下面将展现简单的输入验证怎么写
1，表单index.jsp代码如下：
1 <%@ page language="java" import="java.util.*" pageEncoding="GBK" contentType="text/html; charset=GBK"%> 2 <%@ taglib uri="/struts-tags" prefix="s"%> 3 <% 4 String path = request.getContextPath(); 5 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 6 %> 7 8 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 9 <html> 10 <head> 11 <base href="<%=basePath%>"> 12 13 <title>My JSP ‘index.jsp‘ starting page</title> 14 <meta http-equiv="pragma" content="no-cache"> 15 <meta http-equiv="cache-control" content="no-cache"> 16 <meta http-equiv="expires" content="0"> 17 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> 18 <meta http-equiv="description" content="This is my page"> 19 <!-- 20 <link rel="stylesheet" type="text/css" href="styles.css"> 21 --> 22 </head> 23 24 <body> 25 <h1> 学生信息 </h1> 26 <s:form action="st" method="post"> 27 <s:textfield name="name" label="姓名"></s:textfield> 28 <s:textfield name="age" label="年龄"></s:textfield> 29 <s:textfield name="mark" label="分数"></s:textfield> 30 <s:textfield name="enrolltime" label="入学时间"></s:textfield> 31 <tr> 32 <td align="center" colspan="2"> 33 <input type="submit" value="提交"/> 34 <input type="reset" value="重置"/> 35 </td> 36 </tr> 37 </s:form> 38 39 </body> 40 </html>
2，编写Student类来接受表单参数，代码如下：
1 package pojo;
2
3 import java.util.Date;
4
5 public class Student {
6 private String name;
7 private int age;
8 private double mark;
9 private Date enrolltime;
10 public String getName() {
11 return name;
12 }
13 public void setName(String name) {
14 this.name = name;
15 }
16 public int getAge() {
17 return age;
18 }
19 public void setAge(int age) {
20 this.age = age;
21 }
22 public double getMark() {
23 return mark;
24 }
25 public void setMark(double mark) {
26 this.mark = mark;
27 }
28 public Date getEnrolltime() {
29 return enrolltime;
30 }
31 public void setEnrolltime(Date enrolltime) {
32 this.enrolltime = enrolltime;
33 }
34
35
36
37 }
3，Action代码如下：
1 package action;
2
3 import pojo.Student;
4
5 import com.opensymphony.xwork2.ActionSupport;
6 import com.opensymphony.xwork2.ModelDriven;
7
8 public class StuAction extends ActionSupport implements ModelDriven<Student>{
9 private Student student=new Student();
10 @Override
11 public Student getModel() {
12 // TODO Auto-generated method stub
13 return student;
14 }
15 @Override
16 public String execute() throws Exception {
17 System.out.println(student.getName());
18 System.out.println(student.getAge());
19 System.out.println(student.getMark());
20 System.out.println(student.getEnrolltime());
21 return SUCCESS;
22
23
24 }
25
26
27
28 }
4，struts.xml配置如下：
1 <?xml version="1.0" encoding="GBK" ?> 2 <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"> 3 <struts> 4 <package name="actions" extends="struts-default"> 5 <action name="st" class="action.StuAction"> 6 <result name="input">/index.jsp</result> 7 <result>/Success.jsp</result> 8 </action> 9 10 </package> 11 12 13 </struts>
注：name="input"是在Action模型装换异常或validate方法验证发生异常时自动转换页面，此处为index.jsp
5，Action正确执行后的Success.jsp代码如下：
1 <%@ page language="java" import="java.util.*" pageEncoding="GBK" contentType="text/html; charset=GBK"%> 2 <%@ taglib uri="/struts-tags" prefix="s"%> 3 <% 4 String path = request.getContextPath(); 5 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 6 %> 7 8 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 9 <html> 10 <head> 11 <base href="<%=basePath%>"> 12 13 <title>My JSP ‘Success.jsp‘ starting page</title> 14 15 <meta http-equiv="pragma" content="no-cache"> 16 <meta http-equiv="cache-control" content="no-cache"> 17 <meta http-equiv="expires" content="0"> 18 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> 19 <meta http-equiv="description" content="This is my page"> 20 <!-- 21 <link rel="stylesheet" type="text/css" href="styles.css"> 22 --> 23 24 </head> 25 26 <body> 27 <h1>消息显示</h1> 28 <s:property value="name"/><br/> 29 <s:property value="age"/><br/> 30 <s:property value="mark"/><br/> 31 <s:property value="enrolltime"/><br/> 32 </body> 33 </html>
时间： 2024-10-07 02:34:21