运行Spring应用程序时出现以下错误：
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'roleController' defined in file [/home/john/Documents/Projects/lottery-api/target/classes/io/sunbits/lotteryapi/resources/RoleController.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'roleService' defined in file [/home/john/Documents/Projects/lottery-api/target/classes/io/sunbits/lotteryapi/services/RoleService.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'roleRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract io.sunbits.lotteryapi.entities.User io.sunbits.lotteryapi.data.repository.ExtendedCrudRepository.findOne(java.lang.Long)! No property findOne found for type Role!
应用程序非常大，所以我会复制粘贴你与RoleController.class相关的代码，也许你可以帮助我:)。
RoleController：
@CrossOrigin
@RestController
@RequestMapping(value = "/roles",
consumes = MediaType.APPLICATION_JSON_VALUE,
produces = MediaType.APPLICATION_JSON_VALUE
public class RoleController {
private RoleService service;
@Autowired
public RoleController(RoleService service) {
this.service = service;
}
@RequestMapping(value = "", method = RequestMethod.GET, consumes = MediaType.ALL_VALUE)
@ResponseStatus(value = HttpStatus.CREATED)
public ResponseEntity<?> search(
@RequestParam(required = false) String name,
@RequestParam(required = false) String description,
@RequestParam(required = false) Boolean active,
@RequestParam(value = "_page", defaultValue = "0", required = false) Integer page,
@RequestParam(value = "_size", defaultValue = "25", required = false) Integer size,
@RequestParam(value = "_sort", defaultValue = "-name", required = false) String sort) {
Pageable pageable = new PageRequest(page, size,
SortUtils.processSort(
sort,
new String[]{"name","description","active"}
));
Specification specification = RoleSpecification.genericSearchSpecification(name,description,active);
Page<Role> roles = this.service.findAll(specification,pageable);
PageInfo pageInfo = new PageInfo(roles);
return ResponseEntity.ok(new RestResponse<>(roles.getContent(),pageInfo));
}
@RequestMapping(value = {"", "/"}, method = RequestMethod.POST)
@ResponseStatus(value = HttpStatus.CREATED)
//@PreAuthorize("#oauth2.hasRole('create_item')")
public ResponseEntity<?> create(@Valid @RequestBody Role role, BindingResult result, HttpServletRequest request) {
if (result.hasErrors()) {
return new ResponseEntity<>(result.getFieldErrors(), HttpStatus.BAD_REQUEST);
}
return new ResponseEntity<>(this.service.create(role), HttpStatus.CREATED);
}
@RequestMapping(value = "/{id}", method = RequestMethod.GET, consumes = MediaType.ALL_VALUE)
@ResponseStatus(value = HttpStatus.OK)
public ResponseEntity<?> find(@PathVariable Long id) {
Role role = service.findOne(id);
ApiPreconditions.assertNotNullOrEmpty(role, "Role not exists: " + id);
return ResponseEntity.ok(role);
}
@RequestMapping(value = "/{id}", method = RequestMethod.PUT)
@ResponseStatus(value = HttpStatus.OK)
public ResponseEntity<?> update(@PathVariable Long id, @RequestBody Role role) {
Role oldRole = service.findOne(id);
ApiPreconditions.assertNotNullOrEmpty(oldRole, "Role not exists: " + id);
// Update user id
oldRole.setDescription(role.getDescription());
oldRole.setName(role.getName());
oldRole.setActive(role.getActive());
oldRole.setPermissions(role.getPermissions());
return ResponseEntity.ok(service.update(oldRole));
}
@RequestMapping(value = "/{id}", method = RequestMethod.DELETE, consumes = MediaType.ALL_VALUE)
@ResponseStatus(value = HttpStatus.OK)
public ResponseEntity<?> delete(@PathVariable Long id) {
Role oldRole = service.findOne(id);
ApiPreconditions.assertNotNullOrEmpty(oldRole, "Role not exists: " + id);
// Delete the user
service.delete(oldRole);
return ResponseEntity.ok(oldRole);
}
}
RoleRepository
@Repository
public interface RoleRepository extends ExtendedCrudRepository<Role, Long> {
Set<Role> findByUsersAndActive(User user, Boolean active);
Role findByName(String name);
}
RoleService：
@Service
public class RoleService {
private RoleRepository repository;
private PermissionService permissionService;
@Autowired
public RoleService(RoleRepository repository, PermissionService permissionService) {
this.repository = repository;
this.permissionService = permissionService;
}
public Set<Role> findActiveRolesForUser(User user) {
Set<Role> roles = repository.findByUsersAndActive(user, true);
if (roles != null && roles.size() > 0) {
Set<Permission> permissions;
for (Role role : roles) {
permissions = permissionService.findActivePermissionForRole(role);
role.setPermissions(permissions != null ? permissions : new HashSet<>());
}
}
return roles;
}
public Role findOne(Long id) {
return repository.getOne(id);
}
public Page<Role> findAll(Specification specification, Pageable pageable) {
return getRepository().findAll(specification, pageable);
}
public RoleRepository getRepository() {
return repository;
}
public Role create(Role role) {
return repository.save(role);
}
public Role update(Role oldRole) {
this.repository.save(oldRole);
return oldRole;
}
public void delete(Role oldRole) {
}
}
如果你能帮我找到问题，我将不胜感激:)。如果您需要更多详细信息，请告诉我们。
编辑：我还会添加ExtendedCrudRepository
@NoRepositoryBean
public interface ExtendedCrudRepository<T, ID extends Serializable> extends JpaRepository<T, ID>,
JpaSpecificationExecutor<T> {
User findOne(Long id);
void deleteById(User oldUser);
}
编辑2：我将在错误开始后添加Stacktrace：
2018-03-28 16:25:18.252 INFO 9330 --- [ main] o.h.t.schema.internal.SchemaCreatorImpl : HHH000476: Executing import script 'org.hibernate.tool.schema.internal.exec.ScriptSourceInputNonExistentImpl@77d0dbba'
2018-03-28 16:25:18.255 INFO 9330 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2018-03-28 16:25:19.182 WARN 9330 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'roleController' defined in file [/home/john/Documents/Projects/lottery-api/target/classes/io/sunbits/lotteryapi/resources/RoleController.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'roleService' defined in file [/home/john/Documents/Projects/lottery-api/target/classes/io/sunbits/lotteryapi/services/RoleService.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'roleRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.lang.Object io.sunbits.lotteryapi.data.repository.ExtendedCrudRepository.findOne(java.io.Serializable)! No property findOne found for type Role!
2018-03-28 16:25:19.183 INFO 9330 --- [ main] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2018-03-28 16:25:19.184 INFO 9330 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated...
2018-03-28 16:25:19.205 INFO 9330 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
2018-03-28 16:25:19.206 INFO 9330 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2018-03-28 16:25:19.230 INFO 9330 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-03-28 16:25:19.235 ERROR 9330 --- [ main] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'roleController' defined in file [/home/john/Documents/Projects/lottery-api/target/classes/io/sunbits/lotteryapi/resources/RoleController.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'roleService' defined in file [/home/john/Documents/Projects/lottery-api/target/classes/io/sunbits/lotteryapi/services/RoleService.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'roleRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.lang.Object io.sunbits.lotteryapi.data.repository.ExtendedCrudRepository.findOne(java.io.Serializable)! No property findOne found for type Role!
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:729) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:192) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1270) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1127) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:760) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868) ~[spring-context-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:388) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1246) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1234) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
at io.sunbits.lotteryapi.LotteryapiApplication.main(LotteryapiApplication.java:12) [classes/:na]
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'roleService' defined in file [/home/john/Documents/Projects/lottery-api/target/classes/io/sunbits/lotteryapi/services/RoleService.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'roleRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.lang.Object io.sunbits.lotteryapi.data.repository.ExtendedCrudRepository.findOne(java.io.Serializable)! No property findOne found for type Role!
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:729) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:192) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1270) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1127) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:251) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1065) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:815) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:721) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
... 19 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'roleRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Failed to create query for method public abstract java.lang.Object io.sunbits.lotteryapi.data.repository.ExtendedCrudRepository.findOne(java.io.Serializable)! No property findOne found for type Role!
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1710) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:583) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:251) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1065) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:815) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:721) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
... 33 common frames omitted
Caused by: java.lang.IllegalArgumentException: Failed to create query for method public abstract java.lang.Object io.sunbits.lotteryapi.data.repository.ExtendedCrudRepository.findOne(java.io.Serializable)! No property findOne found for type Role!
at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:82) ~[spring-data-jpa-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:103) ~[spring-data-jpa-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:208) ~[spring-data-jpa-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:79) ~[spring-data-jpa-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lookupQuery(RepositoryFactorySupport.java:553) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$mapMethodsToQuery$1(RepositoryFactorySupport.java:546) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[na:1.8.0_151]
at java.util.Iterator.forEachRemaining(Iterator.java:116) ~[na:1.8.0_151]
at java.util.Collections$UnmodifiableCollection$1.forEachRemaining(Collections.java:1049) ~[na:1.8.0_151]
at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) ~[na:1.8.0_151]
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[na:1.8.0_151]
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[na:1.8.0_151]
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) ~[na:1.8.0_151]
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:1.8.0_151]
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) ~[na:1.8.0_151]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.mapMethodsToQuery(RepositoryFactorySupport.java:548) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$new$0(RepositoryFactorySupport.java:538) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at java.util.Optional.map(Optional.java:215) ~[na:1.8.0_151]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.<init>(RepositoryFactorySupport.java:538) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:317) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$3(RepositoryFactoryBeanSupport.java:287) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.util.Lazy.getNullable(Lazy.java:141) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.util.Lazy.get(Lazy.java:63) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:290) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:102) ~[spring-data-jpa-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1769) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1706) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
... 44 common frames omitted
Caused by: org.springframework.data.mapping.PropertyReferenceException: No property findOne found for type Role!
at org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:90) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:350) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:330) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.mapping.PropertyPath.lambda$from$0(PropertyPath.java:283) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at java.util.concurrent.ConcurrentMap.computeIfAbsent(ConcurrentMap.java:324) ~[na:1.8.0_151]
at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:265) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:248) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.repository.query.parser.Part.<init>(Part.java:81) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.repository.query.parser.PartTree$OrPart.lambda$new$0(PartTree.java:250) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[na:1.8.0_151]
at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[na:1.8.0_151]
at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948) ~[na:1.8.0_151]
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[na:1.8.0_151]
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[na:1.8.0_151]
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) ~[na:1.8.0_151]
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:1.8.0_151]
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) ~[na:1.8.0_151]
at org.springframework.data.repository.query.parser.PartTree$OrPart.<init>(PartTree.java:251) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.repository.query.parser.PartTree$Predicate.lambda$new$0(PartTree.java:380) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[na:1.8.0_151]
at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[na:1.8.0_151]
at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948) ~[na:1.8.0_151]
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[na:1.8.0_151]
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[na:1.8.0_151]
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) ~[na:1.8.0_151]
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:1.8.0_151]
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) ~[na:1.8.0_151]
at org.springframework.data.repository.query.parser.PartTree$Predicate.<init>(PartTree.java:381) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.repository.query.parser.PartTree.<init>(PartTree.java:93) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:76) ~[spring-data-jpa-2.0.5.RELEASE.jar:2.0.5.RELEASE]
... 70 common frames omitted
Disconnected from the target VM, address: '127.0.0.1:40479', transport: 'socket'
Process finished with exit code 1
答案 0 :(得分：0)
问题在于您的ExtendCrudRepository。您尝试为User返回findOne(Long id)，它应该返回类型T，因为ExtendedCrudRepository是通用接口。
当Spring Data尝试为findOne()创建RoleRepository的查询时，它期望返回Role，但您已经将User编码为返回类型
@NoRepositoryBean
public interface ExtendedCrudRepository<T, ID extends Serializable> extends
JpaRepository<T, ID>, JpaSpecificationExecutor<T> {
// You were returning a User here when it should return T
// Also it should take type ID
T findById(ID id);
// You were accepting a User here as a Id parameter when should
// be type ID since it is generic.
void deleteById(ID id);
}
Spring Data更改了CrudRepository
interface CrudRepository<T, ID> {
<S extends T> … save(S entity);
// Previously save(Iterable)
<S extends T> … saveAll(Iterable<S> entities);
// Previously findOne(ID)
… findById(ID id);
// Previously exists(…)
… existsById(ID id);
… findAll();
… findAllByIds(Iterable<ID> ids);
… count();
// Previously delete(ID)
… deleteById(ID id);
… delete(T entity);
// Previously delete(Iterable)
… deleteAll(Iterable<? extends T> entities);
… deleteAll();
}