diff --git a/NavigateController b/NavigateController
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--- /dev/null
+++ b/NavigateController
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+package com.controller.before;
+
+import javax.servlet.http.HttpSession;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import com.po.Buser;
+import com.service.before.NavigateService;
+@Controller
+public class NavigateController extends BaseBeforeController{
+	@Autowired
+	private NavigateService navigateService;
+	/**
+	 * 转到写信页面
+	 */
+	@RequestMapping("/toWrite")
+	public String toWrite(Model model) {
+		return navigateService.toWrite(model);
+	}
+	/***
+	 * 安全退出，不需访问数据库，这里不需要service层和dao层
+	 */
+	@RequestMapping("/exit")
+	public String exit(HttpSession session, Model model) {
+		session.invalidate();
+		model.addAttribute("buser", new Buser());
+		return "before/login";
+	}
+	/***
+	 * 去修改密码页面，不需访问数据库，这里不需要service层和dao层
+	 */
+	@RequestMapping("/toUpdate")
+	public String toUpdate(HttpSession session, Model model) {
+		model.addAttribute("buser", (Buser)session.getAttribute("emailuser"));
+		return "before/update";
+	}
+}
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