在Jhipster中添加新服务时出现代码错误500

我正在开发一个Jhipster应用程序，我试图添加一项新服务。这种服务应该返回对象“请求”（即有一个属性ID（龙），内容（字符串）的列表。在Jhipster中添加新服务时出现代码错误500

我想通过内容一起搜索请求一个@PathVariable。我使用Spring框架。

这是RequestResource.java方法。

@GetMapping(value = "/requests/{content}") 
    @Timed 
    public ResponseEntity<List<Request>> searchForRequest(@PathVariable String content) { 
     log.debug("REST request to get Request : {}", content); 
     List<Request> requestsFounded = searchService.searchRequests(content); 
     return ResponseUtil.wrapOrNotFound(Optional.ofNullable(requestsFounded)); 
    }

这是SearchService.java方法。

private RequestRepository requestRepository; 

    @Transactional(readOnly = true) 
    public List<Request> searchRequests(String content){ 
     log.debug("REST requests to search for requests based on content given input"); 
     List<Request> result = requestRepository.findAllByContent(content); 
     return result; 
    }

终于这是RequestRepository.java

@SuppressWarnings("unused") 
public interface RequestRepository extends JpaRepository<Request,Long> { 

    List<Request> findAllByContent(String content); 

}

我在做什么错？

编辑：

java.lang.IllegalStateException: Ambiguous handler methods mapped for HTTP path 'http://localhost:8080/api/requests/ciao': {public org.springframework.http.ResponseEntity it.mobimentum.businessrequest.web.rest.RequestResource.searchForRequest(java.lang.String), public org.springframework.http.ResponseEntity it.mobimentum.businessrequest.web.rest.RequestResource.getRequest(java.lang.Long)} 
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.lookupHandlerMethod(AbstractHandlerMethodMapping.java:367) 
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:314) 
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:61) 
at org.springframework.web.servlet.handler.AbstractHandlerMapping.getHandler(AbstractHandlerMapping.java:352) 
at org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1160) 
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:940) 
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901) 
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) 
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) 
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) 
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) 
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129) 
at com.codahale.metrics.servlet.AbstractInstrumentedFilter.doFilter(AbstractInstrumentedFilter.java:111) 
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) 
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) 
at org.springframework.boot.web.filter.ApplicationContextHeaderFilter.doFilterInternal(ApplicationContextHeaderFilter.java:55) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) 
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:101) 
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) 
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) 
at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:110) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) 
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:317) 
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127) 
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) 
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) 
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) 
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) 
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) 
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) 
at it.mobimentum.businessrequest.security.jwt.JWTFilter.doFilter(JWTFilter.java:36) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) 
at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:96) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) 
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) 
at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) 
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) 
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) 
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214) 
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177) 
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) 
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) 
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) 
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) 
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) 
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) 
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) 
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) 
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) 
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) 
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) 
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) 
at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84) 
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62) 
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) 
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131) 
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57) 
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46) 
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64) 
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60) 
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77) 
at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43) 
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 
at io.undertow.servlet.handlers.SessionRestoringHandler.handleRequest(SessionRestoringHandler.java:119) 
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292) 
at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81) 
at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138) 
at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135) 
at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48) 
at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43) 
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272) 
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81) 
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104) 
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:211) 
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:809) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
at java.lang.Thread.run(Thread.java:745) 

2017-06-21 12:05:05.376 WARN 8096 --- [ XNIO-2 task-1] .m.m.a.ExceptionHandlerExceptionResolver : Resolved exception caused by Handler execution: java.lang.IllegalStateException: Ambiguous handler methods mapped for HTTP path 'http://localhost:8080/api/requests/ciao': {public org.springframework.http.ResponseEntity it.mobimentum.businessrequest.web.rest.RequestResource.searchForRequest(java.lang.String), public org.springframework.http.ResponseEntity it.mobimentum.businessrequest.web.rest.RequestResource.getRequest(java.lang.Long)}

EDIT 2这是RequestResource.java：

package it.mobimentum.businessrequest.web.rest; 

import com.codahale.metrics.annotation.Timed; 
import it.mobimentum.businessrequest.domain.Request; 

import it.mobimentum.businessrequest.repository.RequestRepository; 
import it.mobimentum.businessrequest.web.rest.util.HeaderUtil; 
import io.github.jhipster.web.util.ResponseUtil; 
import it.mobimentum.businessrequest.security.AuthoritiesConstants; 
import it.mobimentum.businessrequest.service.SearchService; 
import org.slf4j.Logger; 
import org.slf4j.LoggerFactory; 
import org.springframework.http.ResponseEntity; 
import org.springframework.web.bind.annotation.*; 

import java.net.URI; 
import java.net.URISyntaxException; 

import java.util.List; 
import java.util.Optional; 
import javax.inject.Inject; 
import org.springframework.security.access.annotation.Secured; 

/** 
* REST controller for managing Request. 
*/ 
@RestController 
@RequestMapping("/api") 
public class RequestResource { 

    private final Logger log = LoggerFactory.getLogger(RequestResource.class); 

    private static final String ENTITY_NAME = "request"; 

    private final RequestRepository requestRepository; 

    @Inject 
    private SearchService searchService; 

    public RequestResource(RequestRepository requestRepository) { 
     this.requestRepository = requestRepository; 
    } 

    /** 
    * POST /requests : Create a new request. 
    * 
    * @param request the request to create 
    * @return the ResponseEntity with status 201 (Created) and with body the new request, or with status 400 (Bad Request) if the request has already an ID 
    * @throws URISyntaxException if the Location URI syntax is incorrect 
    */ 
    @PostMapping("/requests") 
    @Timed 
    @Secured({AuthoritiesConstants.PRESIDENT, AuthoritiesConstants.ADMIN, AuthoritiesConstants.USER, AuthoritiesConstants.VICE_PRESIDENT}) 
    public ResponseEntity<Request> createRequest(@RequestBody Request request) throws URISyntaxException { 
     /** 
     * Imposto la data di creazione al momento attuale, specifico, in cui 
     * essa viene gestita. 
     */ 
     /*CustomUser customUser = new CustomUser(); 
     customUser.setUsername(SecurityUtils.getCurrentUserLogin()); 
     request.setCreationDate(LocalDate.now()); 
     request.setVisible(true); 
     request.setAuthor(customUser);*/ 
     log.debug("REST request to save Request : {}", request); 
     if (request.getId() != null) { 
      return ResponseEntity.badRequest().headers(HeaderUtil.createFailureAlert(ENTITY_NAME, "idexists", "A new request cannot already have an ID")).body(null); 
     } 
     Request result = requestRepository.save(request); 
     return ResponseEntity.created(new URI("/api/requests/" + result.getId())) 
      .headers(HeaderUtil.createEntityCreationAlert(ENTITY_NAME, result.getId().toString())) 
      .body(result); 
    } 

    /** 
    * PUT /requests : Updates an existing request. 
    * 
    * @param request the request to update 
    * @return the ResponseEntity with status 200 (OK) and with body the updated request, 
    * or with status 400 (Bad Request) if the request is not valid, 
    * or with status 500 (Internal Server Error) if the request couldn't be updated 
    * @throws URISyntaxException if the Location URI syntax is incorrect 
    */ 
    @PutMapping("/requests") 
    @Timed 
    @Secured({AuthoritiesConstants.PRESIDENT, AuthoritiesConstants.ADMIN, AuthoritiesConstants.VICE_PRESIDENT}) 
    public ResponseEntity<Request> updateRequest(@RequestBody Request request) throws URISyntaxException { 
     log.debug("REST request to update Request : {}", request); 
     if (request.getId() == null) { 
      return createRequest(request); 
     } 
     Request result = requestRepository.save(request); 
     return ResponseEntity.ok() 
      .headers(HeaderUtil.createEntityUpdateAlert(ENTITY_NAME, request.getId().toString())) 
      .body(result); 
    } 

    /** 
    * GET /requests : get all the requests. 
    * 
    * @return the ResponseEntity with status 200 (OK) and the list of requests in body 
    */ 
    @GetMapping("/requests") 
    @Timed 
    @Secured({AuthoritiesConstants.PRESIDENT, AuthoritiesConstants.ADMIN, AuthoritiesConstants.USER, AuthoritiesConstants.VICE_PRESIDENT}) 
    public List<Request> getAllRequests() { 
     log.debug("REST request to get all Requests"); 
     return requestRepository.findAll(); 
    } 

    /** 
    * GET /requests/:id : get the "id" request. 
    * 
    * @param content the content of the request to retrieve 
    * @return the ResponseEntity with status 200 (OK) and with body the request, or with status 404 (Not Found) 
    */ 

    @GetMapping("/search/{content}") 
    @Timed 
    public ResponseEntity<List<Request>> searchForRequest(@PathVariable String content) { 
     log.debug("REST request to get Request : {}", content); 
     List<Request> requestsFounded = searchService.searchRequests(content); 
     return ResponseUtil.wrapOrNotFound(Optional.ofNullable(requestsFounded)); 
    } 

    /** 
    * GET /requests/:id : get the "id" request. 
    * 
    * @param id the id of the request to retrieve 
    * @return the ResponseEntity with status 200 (OK) and with body the request, or with status 404 (Not Found) 
    */ 
    @GetMapping("/requests/{id}") 
    @Timed 
    public ResponseEntity<Request> getRequest(@PathVariable Long id) { 
     log.debug("REST request to get Request : {}", id); 
     Request request = requestRepository.findOne(id); 
     return ResponseUtil.wrapOrNotFound(Optional.ofNullable(request)); 
    } 

    /** 
    * DELETE /requests/:id : delete the "id" request. 
    * 
    * @param id the id of the request to delete 
    * @return the ResponseEntity with status 200 (OK) 
    */ 
    @DeleteMapping("/requests/{id}") 
    @Timed 
    @Secured({AuthoritiesConstants.PRESIDENT, AuthoritiesConstants.ADMIN, AuthoritiesConstants.VICE_PRESIDENT}) 
    public ResponseEntity<Void> deleteRequest(@PathVariable Long id) { 
     log.debug("REST request to delete Request : {}", id); 
     requestRepository.delete(id); 
     return ResponseEntity.ok().headers(HeaderUtil.createEntityDeletionAlert(ENTITY_NAME, id.toString())).build(); 
    } 

}

来源

2017-06-21 Manuel Gozzi

您可以添加服务器端异常日志。 –

补充，非常感谢！ –

你做你的注释类以下内容： '@RestController @RequestMapping（“/ API”）' –

2017-06-21 12:05:05.376 WARN 8096 --- [ XNIO-2 task-1] .m.m.a.ExceptionHandlerExceptionResolver : Resolved exception caused by Handler execution: java.lang.IllegalStateException: Ambiguous handler methods mapped for HTTP path 'http://localhost:8080/api/requests/ciao': {public org.springframework.http.ResponseEntity it.mobimentum.businessrequest.web.rest.RequestResource.searchForRequest(java.lang.String), public org.springframework.http.ResponseEntity it.mobimentum.businessrequest.web.rest.RequestResource.getRequest(java.lang.Long)}

此日志意味着你有另一种方法GET映射到URI： /requests/{something}和春天无法检测到您尝试呼叫的方法。

您可以将两种方法之一的注释@GetMapping的值更改为与其他方法不同，然后它将起作用。

来源

2017-06-21 11:15:07

这帮助我解决了第一个错误。现在它给出一个空指针异常。我在描述中添加了RequestResource.java。非常感谢你的帮助，我正在解决这个问题......我只需要解决这个问题。 –

是'searchService' null？你能评论这个例外吗？如果是这样，为什么不使用'@ Autowired'而不是'@Inject' –

我试着用@Autowired，但是又一次出现同样的错误...代码说这个null来自'List result = requestRepository.findAllByContent（content） ;'SearchService.java内部。 –

在Jhipster中添加新服务时出现代码错误500

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