spring Caused by：java.lang.IllegalStateException：找不到AmbiguityMap,无法Map“appController”bean方法

eoigrqb6  于 2024-01-05  发布在  Spring
关注(0)|答案(9)|浏览(210)

大家早上好，我正在处理一个我无法解码的AmbiguityMap.我正在使用Spring mvc 4.0.6和Hibernate 4.3.6，在tomcat中启动war时出现此错误：

  1. ERROR [localhost-startStop-2]: Context initialization failed
  2. org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'requestMappingHandlerMapping' defined in class org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration: Invocation of init method failed; nested exception is java.lang.IllegalStateException: Ambiguous mapping found. Cannot map 'appController' bean method 
  3. public java.lang.String it.besmart.controller.AppController.newClient(org.springframework.ui.ModelMap)
  4. to {[//new],methods=[POST],params=[],headers=[],consumes=[],produces=[],custom=[]}: There is already 'appController' bean method
  5. public java.lang.String it.besmart.controller.AppController.saveClient(it.besmart.models.Client,org.springframework.validation.BindingResult,org.springframework.ui.ModelMap) mapped.
  6.     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1553)
  7.     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
  8.     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
  9.     at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
  10.     at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
  11.     at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
  12.     at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
  13.     at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703)
  14.     at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
  15.     at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
  16.     at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
  17.     at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
  18.     at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
  19.     at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4727)
  20.     at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5167)
  21.     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
  22.     at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)
  23.     at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)
  24.     at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
  25.     at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:945)
  26.     at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1768)
  27.     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
  28.     at java.util.concurrent.FutureTask.run(FutureTask.java:266)
  29.     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
  30.     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
  31.     at java.lang.Thread.run(Thread.java:744)
  32. Caused by: java.lang.IllegalStateException: Ambiguous mapping found. Cannot map 'appController' bean method 
  33. public java.lang.String it.besmart.controller.AppController.newClient(org.springframework.ui.ModelMap)
  34. to {[//new],methods=[POST],params=[],headers=[],consumes=[],produces=[],custom=[]}: There is already 'appController' bean method
  35. public java.lang.String it.besmart.controller.AppController.saveClient(it.besmart.models.Client,org.springframework.validation.BindingResult,org.springframework.ui.ModelMap) mapped.
  36.     at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.registerHandlerMethod(AbstractHandlerMethodMapping.java:192)
  37.     at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.detectHandlerMethods(AbstractHandlerMethodMapping.java:164)
  38.     at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.initHandlerMethods(AbstractHandlerMethodMapping.java:124)
  39.     at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.afterPropertiesSet(AbstractHandlerMethodMapping.java:103)
  40.     at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.afterPropertiesSet(RequestMappingHandlerMapping.java:126)
  41.     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1612)
  42.     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1549)
  43.     ... 25 more

字符串
我不明白为什么我得到这个错误。AppController是相当直

  1. package it.besmart.controller;
  2. import it.besmart.models.Client;
  3. import it.besmart.service.ClientService;
  4. import java.util.List;
  5. import java.util.Locale;
  6. import javax.validation.Valid;
  7. import org.springframework.beans.factory.annotation.Autowired;
  8. import org.springframework.context.MessageSource;
  9. import org.springframework.stereotype.Controller;
  10. import org.springframework.ui.ModelMap;
  11. import org.springframework.validation.BindingResult;
  12. import org.springframework.validation.FieldError;
  13. import org.springframework.web.bind.annotation.PathVariable;
  14. import org.springframework.web.bind.annotation.RequestMapping;
  15. import org.springframework.web.bind.annotation.RequestMethod;
  17. @Controller
  18. @RequestMapping("/")
  19. public class AppController {
  21.     @Autowired
  22.     ClientService clientService;
  24.     @Autowired
  25.     MessageSource messageSource;
  27.     @RequestMapping(value = { "/", "/list" }, method = RequestMethod.GET)
  28.     public String listClients(ModelMap model){
  29.         List<Client> clients = clientService.findAllClients();
  30.         model.addAttribute("clients", clients);
  31.         return "allclients";
  32.     }
  34.     @RequestMapping(value = {"/new"}, method = RequestMethod.POST)
  35.     public String newClient(ModelMap model){
  36.         Client client = new Client();
  37.         model.addAttribute("client", client);
  38.         model.addAttribute("edit", false);
  39.         return "registration";
  41.     }
  43.     @RequestMapping(value = {"/new"}, method = RequestMethod.POST)
  44.     public String saveClient(@Valid Client client, BindingResult result, ModelMap model){
  45.         if(result.hasErrors()){
  46.             return "registration";
  47.         }
  49.         clientService.saveClient(client);
  50.         model.addAttribute("success", "Client" + client.getNomeClient() + "registrato correttamente");
  52.         return "success";
  54.     }
  56.     @RequestMapping(value = { "/edit-{name}-client"}, method = RequestMethod.POST)
  57.     public String updateClient(@Valid Client client, BindingResult result, ModelMap model, @PathVariable String name ){
  58.         if(result.hasErrors()){
  59.             return "registration";
  60.         }
  62.         if(!clientService.isClientNameUnique(client.getIdClient(), client.getNomeClient())){
  63.             FieldError idErr = new FieldError("client", "name", messageSource.getMessage("non.unique.nome_client", new String[]{client.getNomeClient()}, Locale.getDefault()));
  64.             result.addError(idErr);
  65.             return "registration";
  66.         }
  67.         clientService.saveClient(client);
  68.         model.addAttribute("success", "Client" + client.getNomeClient() + "aggiornato correttamente");
  70.         return "success";
  72.     }
  74.     @RequestMapping(value = { "/delete-{id}-client" }, method = RequestMethod.GET)
  75.         public String deleteClient(@PathVariable int id){
  76.         clientService.deleteClientById(id);
  77.         return "redirect:/list";
  78.     }
  80.     }

型
ClientService.java

  1. package it.besmart.service;
  3. import it.besmart.models.Client;
  5. import java.util.List;
  7. public interface ClientService {
  9.     Client findById(int id);
  11.     void saveClient(Client client);
  13.     void updateClient(Client client);
  15.     void deleteClientById(int id);
  17.     List <Client> findAllClients();
  19.     Client findClientByName(String name);
  21.     boolean isClientNameUnique(Integer id, String name);
  23. }

型
它看起来对我来说就像它是相当直的一切...我是相当新的这种应用程序..谢谢

spring

9条答案

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mdfafbf1

mdfafbf11#

这是您收到的错误消息：
找到了AmbiguityMap。无法Map“appController”bean方法public java.lang.String it.besmart.controller.AppController.newClient（org.springframework.ui.ModelMap）到{[//new]，methods=[POST]，params=[]，headers=[]，consumes=[]，produces=[]，custom=[]}：已经存在“appController”bean方法public java.lang.String it.besmart.controller.AppController.saveClient（it.besmart.models.Client，org.springframework.validation.BindingResult，org.springframework.ui.ModelMap）Map。
它告诉你你Map了多个方法来处理POST到URL /new。如果Web浏览器向URL /new发出POST请求，你的哪个方法应该处理它？
以下是两种令人反感的方法：

  1. @RequestMapping(value = {"/new"}, method = RequestMethod.POST)
  2.     public String newClient(ModelMap model){
  3.         Client client = new Client();
  4.         model.addAttribute("client", client);
  5.         model.addAttribute("edit", false);
  6.         return "registration";
  8.     }
  10.     @RequestMapping(value = {"/new"}, method = RequestMethod.POST)
  11.     public String saveClient(@Valid Client client, BindingResult result, ModelMap model){
  12.         if(result.hasErrors()){
  13.             return "registration";
  14.         }
  16.         clientService.saveClient(client);
  17.         model.addAttribute("success", "Client" + client.getNomeClient() + "registrato correttamente");
  19.         return "success";
  21.     }

字符串
我怀疑第一个是不正确的;您可能希望使用RequestMethod.GET而不是RequestMethod.POST。

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赞(0）分享  回复(0）举报  2024-01-05
qcbq4gxm

qcbq4gxm2#

我遇到了这个问题，并通过在PostMapping中将name替换为value来解决它。

  1. @PostMapping(name = "/greetings/sayHi")
  2. public Object sayHi() {
  4.   return "Hello";
  5. }

字符串
更换钥匙name

  1. @PostMapping(value = "/greetings/sayHi")
  2. public Object sayHi() {
  3.     
  4.   return "Hello";
  5. }

型

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efzxgjgh

efzxgjgh3#

在我的例子中，我找不到错误中的一个方法。服务器没有被更新。尝试清理并重建。如果使用intellij，请删除[project dir]/target文件夹。

赞(0）分享  回复(0）举报  2024-01-05
l5tcr1uw

l5tcr1uw4#

当Tomcat的Tomcat 8.0\work\Catalina\localhost\没有被正确清除时也有同样的错误。不得不手动删除，重新启动Tomcat，然后应用程序运行没有错误。

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6ojccjat

6ojccjat5#

在我的例子中，一个上层类已经定义了Map请求。这就是为什么它给我错误。

赞(0）分享  回复(0）举报  2024-01-05
wa7juj8i

wa7juj8i6#

将params添加到下面的代码中，就可以开始了。

  1. @RequestMapping(value = {"/new"}, method = RequestMethod.POST, params = "filter")
  2. public String saveClient(@PathVariable("filter") final String filter,@Valid Client client, BindingResult result, ModelMap model){
  3.     if(result.hasErrors()){
  4.         return "registration";
  5.     }
  7.     clientService.saveClient(client);
  8.     model.addAttribute("success", "Client" + client.getNomeClient() + "registrato correttamente");
  10.     return "success";
  12. }

字符串

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pes8fvy9

pes8fvy97#

这与这里报道的问题无关，但由于这是谷歌关于这个问题的最热门搜索，我还想提到另一个原因，这个问题发生的原因是当你将你的控制器方法标记为私有时（它发生在我身上，因为我使用IDE自动完成方法）。

  1. @RequestMapping(value="/products",  method=RequestMethod.POST)
  2. private List<Product> getProducts() {
  3.     return productService.getProducts();
  4. }

字符串
将其公开应该可以解决这个问题。

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3mpgtkmj

3mpgtkmj8#

  1. @RequestMapping(value = {"/new"}, method = RequestMethod.POST)
  2. public String newClient(ModelMap model)
  4. @RequestMapping(value = {"/new"}, method = RequestMethod.POST)
  5. public String saveClient(@Valid Client client, BindingResult result, ModelMap)

字符串
尝试概括这部分。可能值相同会导致请求Map的歧义。

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hk8txs48

hk8txs489#

  • 备注：此解决方案适用于错误信息，但不适用于问题本身。*

在我的例子中，bean定义缺少id，这会导致重复的示例化：

  1. <bean class="it.besmart.controller.AppController"/>

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我的解决方案是添加ID：

  1. <bean id="appController" class="it.besmart.controller.AppController"/>

型

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