java.lang.IllegalStateException: Ambiguous handler methods mapped for HTTP path

异常信息
服务器500错误

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalStateException: Ambiguous handler methods mapped for HTTP path 'http://localhost:8080/SSM/emps/1': {public java.lang.String com.joker.ssm.controller.EmpController.getAllEmp(java.util.Map,java.lang.Integer,javax.servlet.http.HttpServletRequest), public java.lang.String com.joker.ssm.controller.EmpController.toUpdate(java.lang.String,java.util.Map)}
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:943)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:822)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:807)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
Root Cause

java.lang.IllegalStateException: Ambiguous handler methods mapped for HTTP path 'http://localhost:8080/SSM/emps/1': {public java.lang.String com.joker.ssm.controller.EmpController.getAllEmp(java.util.Map,java.lang.Integer,javax.servlet.http.HttpServletRequest), public java.lang.String com.joker.ssm.controller.EmpController.toUpdate(java.lang.String,java.util.Map)}
	org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.lookupHandlerMethod(AbstractHandlerMethodMapping.java:276)
	org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:225)
	org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:56)
	org.springframework.web.servlet.handler.AbstractHandlerMapping.getHandler(AbstractHandlerMapping.java:300)
	org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1101)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:916)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:931)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:822)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:807)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)

分析：
	业务场景：ssm整合项目
	解决：
		由于controller层@RequestMapping中的value的url值重复造成