Struts2 input

最新推荐文章于 2018-12-15 07:16:08 发布

l_feilong

最新推荐文章于 2018-12-15 07:16:08 发布

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文章标签： struts2.0 语言 class

本文链接：https://blog.youkuaiyun.com/l_feilong/article/details/50835915

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经常用在输入参数类别不对，还有就是在校验的时候会用到

java类

package cn.hb.si;

import cn.hb.po.User;

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

public class LoginAction extends ActionSupport implements ModelDriven<User> {

	private User user = new User();

	public String login() {
		// 方法一
//		if (null == user.getUserName() || "".equals(user.getUserName())) {
//			this.addFieldError("userName", "用户名不能为空");
//			return INPUT;
//		}
		System.out.println(user.getUserName());

		System.out.println(user.getBookList().get(0).getUserName());
		System.out.println(user.getBookList().get(1).getUserName());
		return SUCCESS;
	}

	@Override
	public User getModel() {
		// TODO Auto-generated method stub
		return user;
	}

	// 方法二
	@Override
	public void validate() {
		if (null == user.getUserName() || "".equals(user.getUserName())) {
			this.addFieldError("userName", "用户名不能为空");
		}
	}

}

package cn.hb.po;

import java.util.List;

public class User {

	private String userName;
	private String passWord;
	// private List<String>bookList;
	private List<User> bookList;
	private int age;

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public List<User> getBookList() {
		return bookList;
	}

	public void setBookList(List<User> bookList) {
		this.bookList = bookList;
	}

	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;
	}
}

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
	String path = request.getContextPath();
	String basePath = request.getScheme() + "://"
			+ request.getServerName() + ":" + request.getServerPort()
			+ path + "/";
%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP 'login.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>
	<form action="LoginAction.action" method="post">
		用户名：<input type="text" name="userName"><br><s:fielderror name="userName"></s:fielderror>
		密码： <input  type="password" name="passWord"><br>
		<!-- 书籍：<input type="text" name="bookList[0]"><br> 
		书籍：<input type="text" name="bookList[1]"><br>  -->
		书籍：<input type="text" name="bookList[0].userName"><br> 
		书籍：<input type="text" name="bookList[1].userName"><br> 
		年龄：<input type="text" name="age"><br> 
		 <input type="submit" value="提交">
	</form>
</body>
</html>

struts.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd" >
<struts>
	
	<!-- 引入其他的配置文件 可以添加多个，也可以添加包名-->
	<include file="hello.xml"></include>
	<!-- 配置编码方式 -->
	<constant name="struts.i18n.encoding" value="UTF-8"></constant>

</struts>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">

  <filter>
    <filter-name>struts</filter-name>
    <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
  	<!--  配置后缀
  		<init-param>
  	 	<param-name>struts.action.extension</param-name>
  	 	<param-value>do</param-value>
  	 </init-param>
  	 -->
  </filter>
  <filter-mapping>
    <filter-name>struts</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

hello.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd" >
<struts>

	<package name="default" namespace="/" extends="struts-default">
		<default-action-ref name="index"></default-action-ref>
		<action name="index" >
			<result>/error.jsp</result>
		</action>
		
		<action name="*_*_*" method="{2}" class="cn.hb.{3}.{1}Action">
			 <result>/result.jsp</result>
			<result name="add">/{2}.jsp</result>
			<result name="update">/{2}.jsp</result>
		</action>
		
		<action name="LoginAction" method="login" class="cn.hb.si.LoginAction">
			 <result>/success.jsp</result>
			 <result name="input">/login.jsp</result>
		</action>
	</package>
</struts>

访问地址：http://localhost:8080/Struts2_1zixue/LoginAction.action

访问成功截图：