初学Struts2零配置例子

最新推荐文章于 2017-11-17 01:01:00 发布

原创最新推荐文章于 2017-11-17 01:01:00 发布 · 2.7k 阅读

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#struts

本文介绍如何使用Struts2框架通过零配置方式实现基本的登录功能。具体步骤包括创建Web项目并引入Struts2依赖，定义LoginAction类处理登录逻辑，并设置成功和输入错误时跳转的页面。

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步骤：

1、创建Web Project，将struts2-convention-plugin-2.xx.jar导入WEB-INF/lib
2、创建Action对象

LoginAction.java(所属包名必须为action,否则会报错找不到映射):

package com.action;

import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Result;
import org.apache.struts2.convention.annotation.Results;

import com.opensymphony.xwork2.ActionSupport;

@Results({ @Result(name = "success", location = "success.jsp"), @Result(name = "input", location = "index.jsp") })

public class LoginAction extends ActionSupport {
	private static final long serialVersionUID = 1L;
	private String username;
	private String password;

	@Action("login")<span style="white-space:pre">	</span>//相当于<span style="font-family: Arial, Helvetica, sans-serif;">@Action(value="login"),即该Action名为login.action</span>

	public String execute() {
		return SUCCESS;
	}

	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;
	}
}

相应的页面:
index.jsp:

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s" %>
<html>
  <head>
    <title>零配置登录页</title>
  </head>
  <body>
  		<s:form action="login.action" method="post">
  		<s:textfield label="用户名" name="username"></s:textfield>
  		<s:password label="密码" name = "password"></s:password>
  		<s:submit></s:submit>
  		</s:form>
  </body>
</html>

success.jsp:

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s" %>
<html>
  <head>
    <title>零配置成功登陆页</title>
  </head>
  <body>
  <s:property value="username"/>,welcome.<br>
  Login Success!
  </body>
</html>

struts2.xml如下:

<?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>
	<constant name="struts.convention.result.path" value="/"></constant>
</struts>