title: SpringBoot gets an error “There is already controller bean method”, when two get or two post methods gets added in controller
body: <pre><code>org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'requestMappingHandlerMapping' defined in org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration: Invocation of init method failed; nested exception is java.lang.IllegalStateException: Ambiguous mapping. Cannot map 'employeeController' method 
  public java.util.List&lt;com.test301.Test301.entity.Employee&gt; com.test301.Test301.controller.EmployeeController.getLIstOfEmployees()
  to {[],methods=[GET]}: There is already 'employeeController' bean method
  public com.test301.Test301.entity.Employee com.test301.Test301.controller.EmployeeController.getEmployeeById(java.lang.Integer) mapped.
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) ~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) ~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
      at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
      at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]
      at com.test301.Test301.App.main(App.java:20) [classes/:na]
  Caused by: java.lang.IllegalStateException: Ambiguous mapping. Cannot map 'employeeController' method 
  public java.util.List&lt;com.test301.Test301.entity.Employee&gt; com.test301.Test301.controller.EmployeeController.getLIstOfEmployees()
  to {[],methods=[GET]}: There is already 'employeeController' bean method
  public com.test301.Test301.entity.Employee com.test301.Test301.controller.EmployeeController.getEmployeeById(java.lang.Integer) mapped.
      at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.assertUniqueMethodMapping(AbstractHandlerMethodMapping.java:576) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.register(AbstractHandlerMethodMapping.java:540) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.registerHandlerMethod(AbstractHandlerMethodMapping.java:264) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.detectHandlerMethods(AbstractHandlerMethodMapping.java:250) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.initHandlerMethods(AbstractHandlerMethodMapping.java:214) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.afterPropertiesSet(AbstractHandlerMethodMapping.java:184) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.afterPropertiesSet(RequestMappingHandlerMapping.java:127) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
      ... 16 common frames omitted
  </code></pre>
  
  <p>Contoroller class    </p>
  
  <pre><code>/**
   * 
   */
  package com.test301.Test301.controller;
  
  
  
  import java.util.List;
  
  import javax.websocket.server.PathParam;
  
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Controller;
  import org.springframework.web.bind.annotation.RequestBody;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.RequestMethod;
  import org.springframework.web.bind.annotation.ResponseBody;
  
  import com.test301.Test301.entity.Employee;
  import com.test301.Test301.service.IEmployeeService;
  
  @Controller
  public class EmployeeController {
  
      @Autowired
      private IEmployeeService empService;
  
      @RequestMapping("/")
      public String getIndexPage() {
          return "index";
      }
  
      @ResponseBody
      @RequestMapping(name="/addEmployee", method = RequestMethod.POST)
      public String addEmployee(@RequestBody Employee emp) {
          return empService.addEmployee(emp);
      }
  
      @ResponseBody
      @RequestMapping(name="/getEmpList", method = RequestMethod.GET)
      public List&lt;Employee&gt; getLIstOfEmployees(){
          return empService.getListOfEmployees();
      }
  
      @ResponseBody
      @RequestMapping(name="/deleteEmployee/{id}", method = RequestMethod.DELETE)
      public String deleteEmployee(@PathParam("id") Integer empId) {
          return empService.deleteEmployee(empId);
  
      }
  
      @ResponseBody
      @RequestMapping(name="/getEmpById/{id}", method = RequestMethod.GET)
      public Employee getEmployeeById(@PathParam("id") Integer empId) {
          return empService.getEmployeeById(empId);
      }
  
      @ResponseBody
      @RequestMapping(name="/checkValidEmp", method = RequestMethod.POST)
      public String checkValidEmployee(@RequestBody Employee emp) {
          return empService.checkValidEmployee(emp);
      }
  
  }
  </code></pre>
  
  <p>Here i am getting an bean there is already 'employeeContoroller' bean method exist. When I have added one get &amp; one post method it worked properly but when i have added one extra get method i am getting above error even if both the url are different.same for post method also, with one post method it worked properly but with two post method it showed error.</p>