jsf.rar_DEMO_jsf mex

package bean; import java.util.Map; import javax.faces.application.Application; import javax.faces.context.FacesContext; import javax.faces.el.ValueBinding; public class LoginDao { @SuppressWarnings("unchecked") public String login(){ FacesContext ctx=FacesContext.getCurrentInstance(); Application app = ctx.getApplication(); ValueBinding vb = app.createValueBinding("#{loginbean}"); LoginBean lb=(LoginBean)vb.getValue(ctx); System.out.println(lb.getUserName()); System.out.println(lb.getPassword()); Map map = ctx.getExternalContext().getRequestMap(); if(lb.getUserName().equals("123") && lb.getPassword().equals("123")){ map.put("tip", "登陆成功"); }else{ map.put("tip", "登陆失败"); } return "tip"; } }