表单校验---struts2

一写validate方伐

　　　　1 让你的Action继承ActionSupport类，

　　　　　　重写validate方法，（或validateXxxx）

　　　　　　判断，写入错误信息

　　　　　　jsp中用标签显示，struts。xml中配置转向的页面

package he.action;

import java.util.Map;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class Login extends ActionSupport{
    String name;
    String pwd;
    
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }
    
    

    @Override
    public void validate() {
        // TODO Auto-generated method stub
        super.validate();
        if("".equals(name)||name==null){
            this.addFieldError("name", "name can not be null");
        }
        if("".equals(pwd)||pwd==null){
            this.addFieldError("pwd", "pwd can not be null");
        }
    }

    public String execute(){
        System.out.print(name+"  \n"+pwd);
        if("scott".equals(name)&&"1234".equals(pwd)){
            Map<String, Object> session = ActionContext.getContext().getSession();
            session.put("user", name);
            return "success";
        }
        this.addActionError("name do not match pwd");
        return "fail";
    }

}

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN"
    "http://struts.apache.org/dtds/struts-2.1.7.dtd">

<struts>
    <package name="struts2-demo1" extends="struts-default">
        <action name="login" class="he.action.Login">
            <result name='success' type='dispatcher'>/ok.jsp</result>
            <result name='fail' type='dispatcher'>/index.jsp</result>
            <result name="input">/index.jsp</result>
        </action>
    </package>
</struts>

Struts.xml

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@taglib uri="/struts-tags"  prefix="s" %>
<!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>
  <s:actionerror/>
    <s:form action="login" >
    <s:textfield  name="name" label="name" labelposition="left"></s:textfield>
    <s:fielderror fieldName="name"></s:fielderror><br>
    <s:textfield  name="pwd" label="pwd" labelposition="left"></s:textfield>
    <s:fielderror fieldName="pwd"></s:fielderror><br>
    <s:submit  value="OK"></s:submit>
    </s:form>
  </body>
</html>

index.jsp

posted on 2015-12-28 20:25 编世界阅读(203) 评论(0) 编辑收藏举报