struts---基本配置(以登录页面为例)

1、在web.xml文件定义核心 Filter来拦截用户请求：

<filter>
		<?xml version="1.0" encoding="GBK"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
	id="WebApp_ID" version="3.0">

	<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>
	<welcome-file-list>
		<welcome-file>index.jsp</welcome-file>
	</welcome-file-list>
</web-app>

2、写form表单提交页面：

<s:form action="login">
	<s:textfield name="username" key="user"/>
	<s:textfield name="password" key="pass"/>
	<s:submit key="login"/>
</s:form>

3、定义处理用户请求的Action类：

public class LoginAction extends ActionSupport {

	private String username;
	private String password;

	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 execute() throws Exception {

		if (getUsername().equals("") || this.getPassword().equals(""))
			return LOGIN;
		if (getUsername().equals("admin") && this.getPassword().equals("admin")) {

			return SUCCESS;
		} else {

			return ERROR;
		}

	}

}

4、配置Action、处理结果和物理视图资源之间的对应关系：

<?xml version="1.0" encoding="GBK"?>
<!DOCTYPE struts PUBLIC
	"-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN"
	"http://struts.apache.org/dtds/struts-2.1.7.dtd">
<!-- 指定Struts 2配置文件的根元素 -->
<struts>
	<constant name="struts.custom.i18n.resources" value="hulu"/>
	<package name="hulu" extends="struts-default">
		<action name="login" class="hulu.action.LoginAction">
			<!-- 定义三个逻辑视图和物理资源之间的映射 -->
			<result name="login">/login.jsp</result>
			<result name="error">/error.jsp</result>
			<result name="success">/welcome.jsp</result>
		</action>
	</package>
</struts>

5、不要忘了引入struts2的相关支持包：



以上步骤即可简单实现struts2的开发。