（小白）SSH框架如何把action的结果返回到jsp中请求方法的回调内，只想实现一个登陆提示功能。

<struts>

	<!-- constant 配置 -->

	<!-- 用于设置默认的本地编码 -->

	<constant name="struts.i18n.encoding" value="UTF-8" />

	<!-- 指定请求后缀为.action，指定多个请求后缀用逗号分隔 -->

	<constant name="struts.action.extension" value="action" />

	<!--设置浏览器是否缓存静态内容，建议：开发阶段关闭，运行时开启 -->

	<constant name="struts.serve.static.browserCache" value="false" />

	<!--当struts.xml配置文件修改后，系统是否重新加载该文件，开发阶段打开此功能 -->

	<constant name="struts.configuration.xml.reload" value="true" />

	<!-- 开发提示：出错时打印更详细的信息，开发阶段打开此功能 -->

	<constant name="struts.devMode" value="true" />



	<!-- Strut2交给spring管理 -->

	<!-- struts2框架就会把bean转发给spring来创建，装配，注入。但是bean创建完成之后，还是由struts容器来管理其生命周期 -->

	<constant name="struts.objectFactory" value="spring" />



	<package name="login" namespace="/" extends="struts-default">

		<action name="loginAction" class="com.mywork.web.LoginAction">

			<result name="index">/jsp/Main.jsp</result>

			<result name="login">/jsp/Login.jsp</result>

		</action>

	</package>

</struts>

public class LoginAction extends ActionSupport implements ModelDriven<SUser>,

		ServletRequestAware, ServletResponseAware {



	@Autowired

	ILoginService loginService;

	private HttpServletRequest request;

	private HttpServletResponse response;



	private SUser sUser;

	private String message;// 消息



	@Override

	public SUser getModel() {

		sUser = new SUser();

		return sUser;

	}



	@Override

	public void setServletResponse(HttpServletResponse arg0) {

		this.response = arg0;

	}



	@Override

	public void setServletRequest(HttpServletRequest arg0) {

		this.request = arg0;

	}



	// 登录

	@ResponseBody

	public void login() throws IOException {

		response.setContentType("text/html;charset=utf-8");

		String userNumber = sUser.getUserNumber();

		SUser user = loginService.findByUserIdAndPassword(userNumber);

		PrintWriter out = response.getWriter();

		if (user != null) {

			if (user.getPassword().equals(sUser.getPassword())) {

				HttpSession session = request.getSession();

				session.setAttribute("user", user);

				out.print("<script>window.location.href='http://localhost:8080/CommodityManagementSystem/jsp/Main.jsp'</script>");

				// return "index";

			} else {

				out.print("<script>alert('密码错误,请重新输入密码!')</script>");

				// message = "密码错误,请重新输入密码!";

			}

		} else {

			out.print("<script>alert('此账户不存在!')</script>");

			// message = "此账户不存在!";

		}

		out.flush();

		out.close();

		// return "login";

	}



	// get set

	public String getMessage() {

		return message;

	}



	public void setMessage(String message) {

		this.message = message;

	}

}

function login(f){

			/* $(f).Submit(function(d) {

				alert(d);

				alert("${message}");

				console.log("${user}");

			}); */

			$.post("loginAction!login.action",f.serialize(),function(data){

				alert(data);

			});

		}