改造LoginAction，使用注解方式
类上使用的注解
action 方法使用的注解
将要访问的action打上Action注解，value是访问的action的路径名，result是返回结果集，返回的字符串可以跳转到相应的路径
@Action(value="login",results={@Result(name="success",location="/login_success.html"),
@Result(name="fail",location="/login_fail.html")})
这时候可以把xml里的配置删除
LoginAction：
package sdibt.fly.action; import javax.servlet.ServletContext; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; import org.apache.struts2.ServletActionContext; import org.apache.struts2.convention.annotation.Action; import org.apache.struts2.convention.annotation.Namespace; import org.apache.struts2.convention.annotation.ParentPackage; import org.apache.struts2.convention.annotation.Result; @Namespace("/login") @ParentPackage("struts-default") public class LoginAction { private String username;//请求的账号 private String password;//请求的密码 @Action(value="login",results={@Result(name="success",location="/login_success.html"), @Result(name="fail",location="/login_fail.html")}) public String login(){ //这里应该调用service的验证登录功能，为了方便演示,在这里就固定验证了 //如果账号是admin，密码是ok，就登录成功，否则登录失败 if(this.username.equals("admin")&&this.password.equals("ok")){ return "success"; }else{ return "fail"; } } @Action(value="register",results={@Result(name="reg",location="reg_success")}) public String register(){ //获取request HttpServletRequest request = ServletActionContext.getRequest(); //获取session HttpSession session = request.getSession(); //获取application ServletContext application = request.getServletContext(); request.setAttribute("username", "小明"); session.setAttribute("username", "小李"); application.setAttribute("username", "小赵"); return "reg"; } 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; } }拦截器注解配置
使用上一章使用的拦截器，拦截器的本身不用改变，不过还要再xml文件里配置一下
<?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="custom" extends="struts-default"> <!-- 定义拦截器 --> <interceptors> <interceptor name="myinter" class="sdibt.fly.interceptor.MyInterceptor"></interceptor> <!-- 定义拦截器栈 --> <interceptor-stack name="myStack"> <!-- 先经过一些默认的拦截器，在经过自己定义的拦截器 --> <interceptor-ref name="defaultStack"></interceptor-ref> <interceptor-ref name="myinter"></interceptor-ref> </interceptor-stack> </interceptors> </package> </struts>
配置action类，要继承定义拦截器的包custom
package sdibt.fly.action; import java.util.Map; import org.apache.struts2.convention.annotation.Action; import org.apache.struts2.convention.annotation.InterceptorRef; import org.apache.struts2.convention.annotation.InterceptorRefs; import org.apache.struts2.convention.annotation.Namespace; import org.apache.struts2.convention.annotation.ParentPackage; import org.apache.struts2.convention.annotation.Result; import com.opensymphony.xwork2.ActionContext; @Namespace("/comment") //使用拦截器 @InterceptorRefs(@InterceptorRef("myStack")) @ParentPackage("custom") public class CommentAction { private String commentText; @Action(value="comment",results={@Result(name="success",location="/comment_success.jsp")}) public String comment(){ //将接受到的文字带到另一个界面 ActionContext ctx = ActionContext.getContext(); Map map = (Map) ctx.get("request"); map.put("commentText", this.commentText); return "success"; } public String getCommentText() { return commentText; } public void setCommentText(String commentText) { this.commentText = commentText; } } 文章来源: Struts2 框架总结(四) :注解方式开发