struts2 注解实现零配置实例
程序员文章站
2022-04-06 22:54:34
...
1新建一个web项目，添加struts2相关的包，在web.xml中配置struts2
2. AnnotationAction.java
3 login.jsp
4. 登陆即可跳转到index.jsp
<!-- struts2的Filter 分发器 -->
<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
</filter-class>
<!--零配置需在filter中指定Action包的位置 -->
<init-param>
<param-name>actionPackages</param-name>
<!--零配置Action包的位置 -->
<param-value>com.test.action.AnnotationAction</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>*.action</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>
2. AnnotationAction.java
package com.test.action;
import com.opensymphony.xwork2.ActionSupport;
import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Results;
import org.apache.struts2.convention.annotation.Result;
import org.apache.struts2.dispatcher.ServletRedirectResult;
//命名空间
@Namespace(value="/test")
//结果集
@Results({
//AnnotationAction传出参数"success"时，页面会跳转到index.jsp
@Result(name="success",location="/index.jsp"),
@Result(name="login",location="/login.jsp")
})
//@注解action为annotationAction，在jsp页面可以使用；若无此注解，
//jsp页面中可用action="annotation!add.action",即将Action去掉，首字母小写
@Action(value="annotationAction")
public class AnnotationAction extends ActionSupport{
public String add(){
return "success";
}
public String login(){
return "login";
}
}
3 login.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ 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=UTF-8">
<title>用户登录</title>
</head>
<body>
<s:form name="form_login" action="annotationAction!add.action" method="post" namespace="/test">
<table>
<tr>
<td>用户名：</td>
<td><s:textfield name="userName" /></td>
</tr>
<tr>
<td>密 码：</td>
<td><s:password name="userPassword"/></td>
</tr>
<tr>
<td> </td>
<td>
<s:submit value="登陆"/>
<s:reset value="取消"/>
</td>
</tr>
</table>
</s:form>
</body>
</html>
4. 登陆即可跳转到index.jsp