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Struts2之输入验证

2015-12-01 22:17 429 查看

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：

<%@ page language="java" import="java.util.*" pageEncoding="GBK" contentType="text/html; charset=GBK"%>
 <%@ taglib uri="/struts-tags" prefix="s"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>

<body>
<h1> 学生信息 </h1>
<s:form action="st" method="post">
<s:textfield name="name" label="姓名"></s:textfield>
<s:textfield name="age" label="年龄"></s:textfield>
<s:textfield name="mark" label="分数"></s:textfield>
<s:textfield name="enrolltime" label="入学时间"></s:textfield>
<tr>
<td align="center" colspan="2">
<input type="submit" value="提交"/>
<input type="reset" value="重置"/>
</td>
</tr>
</s:form>

</body>
</html>

2，编写Student类来接受表单参数，代码如下：

package pojo;

import java.util.Date;

public class Student {
private String name;
private int age;
private double mark;
private Date enrolltime;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public double getMark() {
return mark;
}
public void setMark(double mark) {
this.mark = mark;
}
public Date getEnrolltime() {
return enrolltime;
}
public void setEnrolltime(Date enrolltime) {
this.enrolltime = enrolltime;
}

}

3，Action代码如下：

package action;

import pojo.Student;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

public class StuAction extends ActionSupport implements ModelDriven<Student>{
private Student student=new Student();
@Override
public Student getModel() {
// TODO Auto-generated method stub
return student;
}
@Override
public String execute() throws Exception {
System.out.println(student.getName());
System.out.println(student.getAge());
System.out.println(student.getMark());
System.out.println(student.getEnrolltime());
return SUCCESS;

}

}

4，struts.xml配置如下：

<?xml version="1.0" encoding="GBK" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<package name="actions" extends="struts-default">
<action name="st" class="action.StuAction">
<result name="input">/index.jsp</result>
<result>/Success.jsp</result>
</action>

</package>

</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：

<%@ page language="java" import="java.util.*" pageEncoding="GBK" contentType="text/html; charset=GBK"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP 'Success.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->

</head>

<body>
<h1>消息显示</h1>
<s:property value="name"/><br/>
<s:property value="age"/><br/>
<s:property value="mark"/><br/>
<s:property value="enrolltime"/><br/>
</body>
</html>

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