如何解决原因:java.lang.IllegalStateException:找到了模糊的映射无法映射“ appController” Bean方法
这是您收到的错误消息:
找到模糊的映射。无法将“ appController” bean方法公共java.lang.String映射为it.besmart.controller.AppController.newClient(org.springframework.ui.ModelMap)映射到{[// new],方法= [POST],params = [], headers = [],consumes = [],produces = [],custom = []}:已经有’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)映射。
它告诉您要映射多个方法来处理POST
URL /new
。如果网络浏览器POST
向URL 发出请求,那么/new
您应该使用哪种方法处理该请求?
这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";
}
我怀疑其中第一个是不正确的。您可能想要使用RequestMethod.GET
代替RequestMethod.POST
。
解决方法
早上好,我正在处理一个模棱两可的映射,我无法解码…我正在使用Spring mvc 4.0.6和hibernate
4.3.6在tomcat中发动战争时遇到此错误:
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],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
我不明白为什么我会收到此错误。AppController很直
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,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";
}
}
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);
}
在我看来,这一切都是很直接的……对于这种应用程序,我还是一个新手。
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