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：

ERROR [localhost-startStop-2]: Context initialization failed
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 
public java.lang.String it.besmart.controller.AppController.newClient(org.springframework.ui.ModelMap)
to {[//new],methods=[POST],params=[],headers=[],consumes=[],produces=[],custom=[]}: There is already 'appController' bean method
public java.lang.String it.besmart.controller.AppController.saveClient(it.besmart.models.Client,org.springframework.validation.BindingResult,org.springframework.ui.ModelMap) mapped.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1553)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4727)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5167)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
    at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:945)
    at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1768)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.IllegalStateException: Ambiguous mapping found. Cannot map 'appController' bean method 
public java.lang.String it.besmart.controller.AppController.newClient(org.springframework.ui.ModelMap)
to {[//new],methods=[POST],params=[],headers=[],consumes=[],produces=[],custom=[]}: There is already 'appController' bean method
public java.lang.String it.besmart.controller.AppController.saveClient(it.besmart.models.Client,org.springframework.validation.BindingResult,org.springframework.ui.ModelMap) mapped.
    at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.registerHandlerMethod(AbstractHandlerMethodMapping.java:192)
    at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.detectHandlerMethods(AbstractHandlerMethodMapping.java:164)
    at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.initHandlerMethods(AbstractHandlerMethodMapping.java:124)
    at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.afterPropertiesSet(AbstractHandlerMethodMapping.java:103)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.afterPropertiesSet(RequestMappingHandlerMapping.java:126)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1612)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1549)
    ... 25 more

字符串
我不明白为什么我得到这个错误。AppController是相当直

package it.besmart.controller;
import it.besmart.models.Client;
import it.besmart.service.ClientService;
import java.util.List;
import java.util.Locale;
import javax.validation.Valid;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.MessageSource;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
@RequestMapping("/")
public class AppController {

    @Autowired
    ClientService clientService;

    @Autowired
    MessageSource messageSource;

    @RequestMapping(value = { "/", "/list" }, method = RequestMethod.GET)
    public String listClients(ModelMap model){
        List<Client> clients = clientService.findAllClients();
        model.addAttribute("clients", clients);
        return "allclients";
    }

    @RequestMapping(value = {"/new"}, method = RequestMethod.POST)
    public String newClient(ModelMap model){
        Client client = new Client();
        model.addAttribute("client", client);
        model.addAttribute("edit", false);
        return "registration";

    }

    @RequestMapping(value = {"/new"}, method = RequestMethod.POST)
    public String saveClient(@Valid Client client, BindingResult result, ModelMap model){
        if(result.hasErrors()){
            return "registration";
        }

        clientService.saveClient(client);
        model.addAttribute("success", "Client" + client.getNomeClient() + "registrato correttamente");

        return "success";

    }

    @RequestMapping(value = { "/edit-{name}-client"}, method = RequestMethod.POST)
    public String updateClient(@Valid Client client, BindingResult result, ModelMap model, @PathVariable String name ){
        if(result.hasErrors()){
            return "registration";
        }

        if(!clientService.isClientNameUnique(client.getIdClient(), client.getNomeClient())){
            FieldError idErr = new FieldError("client", "name", messageSource.getMessage("non.unique.nome_client", new String[]{client.getNomeClient()}, Locale.getDefault()));
            result.addError(idErr);
            return "registration";
        }
        clientService.saveClient(client);
        model.addAttribute("success", "Client" + client.getNomeClient() + "aggiornato correttamente");

        return "success";

    }

    @RequestMapping(value = { "/delete-{id}-client" }, method = RequestMethod.GET)
        public String deleteClient(@PathVariable int id){
        clientService.deleteClientById(id);
        return "redirect:/list";
    }

    }

型
ClientService.java

package it.besmart.service;

import it.besmart.models.Client;

import java.util.List;

public interface ClientService {

    Client findById(int id);

    void saveClient(Client client);

    void updateClient(Client client);

    void deleteClientById(int id);

    List <Client> findAllClients();

    Client findClientByName(String name);

    boolean isClientNameUnique(Integer id, String name);

}

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

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：

@RequestMapping(value = {"/new"}, method = RequestMethod.POST)
    public String newClient(ModelMap model){
        Client client = new Client();
        model.addAttribute("client", client);
        model.addAttribute("edit", false);
        return "registration";

    }

    @RequestMapping(value = {"/new"}, method = RequestMethod.POST)
    public String saveClient(@Valid Client client, BindingResult result, ModelMap model){
        if(result.hasErrors()){
            return "registration";
        }

        clientService.saveClient(client);
        model.addAttribute("success", "Client" + client.getNomeClient() + "registrato correttamente");

        return "success";

    }

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。

9条答案

按热度按时间

mdfafbf11#

赞(0）回复(0）举报 12个月前

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。

@PostMapping(name = "/greetings/sayHi")
public Object sayHi() {

  return "Hello";
}

字符串
更换钥匙name

@PostMapping(value = "/greetings/sayHi")
public Object sayHi() {
    
  return "Hello";
}

型

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。

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。

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。

wa7juj8i6#

将params添加到下面的代码中，就可以开始了。

@RequestMapping(value = {"/new"}, method = RequestMethod.POST, params = "filter")
public String saveClient(@PathVariable("filter") final String filter,@Valid Client client, BindingResult result, ModelMap model){
    if(result.hasErrors()){
        return "registration";
    }

    clientService.saveClient(client);
    model.addAttribute("success", "Client" + client.getNomeClient() + "registrato correttamente");

    return "success";

}

字符串

记住提供参数到您的网址例如https://localhost/url?filter=filterBy或http://localhost/url/filter根据您的网址配置相应地改变控制器的方法

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）。

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

字符串
将其公开应该可以解决这个问题。

3mpgtkmj8#

@RequestMapping(value = {"/new"}, method = RequestMethod.POST)
public String newClient(ModelMap model)

@RequestMapping(value = {"/new"}, method = RequestMethod.POST)
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。

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：

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

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我的解决方案是添加ID：

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

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

9条答案

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