最近在看struts2， 今天看了檢驗部分。記錄一下。
1 loginValidate.jsp
<%@ page language="java"
contentType="text/html; charset=EUC-KR"
pageEncoding="EUC-KR"
import="java.util.*" %>
<%@ taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR">
<title>데이타 검증</title>
</head>
<body>
<s:actionerror />
<s:actionmessage />
<s:form action="LoginValidateAction.action" theme="simple">
입력내용:<s:textfield name="msg" />
<s:fielderror>
<s:param>msg.hello</s:param>
</s:fielderror>
<br />
<s:submit value="login" />
</s:form>
</body>
</html>
2 LoginValidateAction.java 在struts2demo包裏面
package struts2demo;
import com.opensymphony.xwork2.ActionSupport;
public class LoginValidateAction extends ActionSupport {
private String msg;
public String execute() {
System.out.println(SUCCESS);
return SUCCESS;
}
public void validate() {
if(!msg.equalsIgnoreCase("hello")){
System.out.println(INPUT);
this.addFieldError("msg.hello", "must be hello!");
this.addActionError("error!");
}else{
this.addActionMessage("success");
}
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
}
3 struts.xml 在 src下
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="struts2demo" extends="struts-default">
<action name="LoginValidateAction" class="struts2demo.LoginValidateAction">
<result name="success">/loginValidate.jsp</result>
<result name="input">/loginValidate.jsp</result>
</action>
</package>
</struts>
4 web.xml在WEB-INF下
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd">
<session-config>
<session-timeout>30</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- struts2 filter -->
<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.FilterDispatcher
</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
5 當然最基本還要導入包
下面附圖
6 運行loginValidate.jsp
可以了 就是這麼簡單。
大家一起加油！！