Spring MVC 中 怎样从一个Controller 方法跳转到另一个方法，注意是跳转，不是调用

        /**
	 * 添加职称
	 * @param teacherTitle
	 * @return
	 */
	@RequestMapping(value="/addTitle",method={RequestMethod.POST,RequestMethod.GET})
	public String addTitle(TeacherTitle teacherTitle,Model model){
		try {
			titleService.add(teacherTitle);
			System.out.println("1111");
			return REDIRECT + "listTitles";
		} catch (Exception e) {
			e.printStackTrace();
			return "error";
		}
	}
	
	/**
	 * 列出所有职称
	 * @param model
	 * @return
	 */
	@RequestMapping(value="/listTitles")
	public String listTitles(Model model){
		try {
			List titles = titleService.findAll(TeacherTitle.class);
			if (titles!=null){
				model.addAttribute("titles", titles);
				return PARENTPATH + "title";
			}
			return "error";
				
		} catch (Exception e) {
			e.printStackTrace();
			return "error";
		}
	}