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  • Struts2实现空表单信息的提示

    须要的jar包文件:



    index.jsp源代码:

    <%@ page language="java" contentType="text/html; charset=GBK"%>
    <%@taglib prefix="s" uri="/struts-tags"%>
    <html>
    <head>
    <title>请输入您的注冊信息</title>
    </head>
    <body>
    <H1>请输入您的注冊信息</H1> 
    <s:form action="regist">
    	<s:textfield label="username"  name="userName"/>
    	<s:password label="密码" name="password"/>
    	<s:password label="请再输入一次" name="rePassword"/>
    	<s:submit value="注冊"></s:submit>
    </s:form> 
    </body>
    </html> 
      

    welcome.jsp源代码:

    <%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
    <%
    String path = request.getContextPath();
    String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
    %>
    <html>
      <head>
        <base href="<%=basePath%>">
        <title>My JSP 'welcome.jsp' starting page</title>
      </head>
      <body>
               恭喜您,注冊成功。 
      </body>
    </html>

    web.xml源代码:

    <?xml version="1.0" encoding="UTF-8"?>
    <web-app version="2.5" 
    	xmlns="http://java.sun.com/xml/ns/javaee" 
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
      <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
      </welcome-file-list>
      <filter>
      	<filter-name>struts2</filter-name>
      	<filter-class>
      		org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
      	</filter-class>
      </filter>
      <filter-mapping>
      	<filter-name>struts2</filter-name>
      	<url-pattern>/*</url-pattern>
      </filter-mapping></web-app>
    

    struts.xml源代码:

    <?

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

    > <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"> <struts> <package name="lee" extends="struts-default"> <action name="regist" class="tom.jiafei.ZhuceAction"> <result name="success">/welcome.jsp</result> <result name="input">/index.jsp</result> </action> </package> </struts>


    ZhuceAction.java源代码:

    package tom.jiafei;
    import com.opensymphony.xwork2.ActionSupport;
    
    @SuppressWarnings("serial")
    public class ZhuceAction extends ActionSupport
    {
    	private String userName;
    	private String password;
    	private String rePassword;
    	
    	public String getUserName() {
    		return userName;
    	}
    
    	public void setUserName(String userName) {
    		this.userName = userName;
    	}
    
    	public String getPassword() {
    		return password;
    	}
    
    	public void setPassword(String password) {
    		this.password = password;
    	}
    
    	public String getRePassword() {
    		return rePassword;
    	}
    
    	public void setRePassword(String rePassword) {
    		this.rePassword = rePassword;
    	}
    
    	public String execute() throws Exception {
    	return SUCCESS;
    	}
    	
    	}

    ZhuceAction-validation.xml源代码:

    <?xml version="1.0" encoding="GBK"?

    > <!DOCTYPE validators PUBLIC "-//OpenSymphony Group//XWork Validator 1.0.2//EN" "http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd"> <validators> <field name="userName"> <field-validator type="requiredstring"> <param name="trim">true</param> <message>username不能为空</message> </field-validator> </field> <field name="password"> <field-validator type="requiredstring"> <param name="trim">true</param> <message>password不能为空</message> </field-validator> </field> <field name="rePassword"> <field-validator type="requiredstring"> <param name="trim">true</param> <message>确认password不能为空</message> </field-validator> <field-validator type="fieldexpression"> <param name="expression"><![CDATA[(password==rePassword)]]></param> <message>两次输入password不一致</message> </field-validator> </field> </validators>


    当提交的是空表单时执行的结果为:



    当两次提交的password不一致时。执行的结果为:




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  • 原文地址:https://www.cnblogs.com/llguanli/p/8561986.html
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