无法在 postgres

编程问答 2022-05-26

问题描述

我正在尝试使用 spring 数据 jdbc 在 postgres 中保存数据。我能够更新、获取和删除实体，但我无法保存它。从互联网上获取了一个示例项目，我尝试遵循 jdbc 的 spring 数据示例，使用 JdbcAggregateTemplate 并且模型类的代码是这样的。我搜索过 jdbc 更新任何实体而不是直接插入，但我如何使用任何随机生成器插入。以及我如何像在 jpa 中那样使用随机生成器。


import java.util.Date;

import org.springframework.data.annotation.Id;
import org.springframework.data.relational.core.mapping.Column;

import com.javabydeveloper.util.UserType;

import lombok.AllArgsConstructor;
import lombok.Data;


@Data // lomok
@AllArgsConstructor
public class User {

    //private static final long serialVersionUID = -2343243243242432341L;
    
    @Id
    private Long id;
    private String userName;
    private String password;
    private String email;
    private Date createdTime;
    private Date updatedTime;
    @Column("dob") // to map db column if property not same as column name
    private Date dateofBirth;
    private UserType userType; // Enum Type
}

仓库接口

@Repository
public interface UserRepository extends CrudRepository<User,Long>,WithInsert<User> {
}

控制器类

    @ResponseStatus(HttpStatus.CREATED)
    public void createuser(@Valid @RequestBody User user) {

        System.out.println(user); // Just to inspect values for demo
        userRepository.save(user);
    }

withInsert 接口实现

public class WithInsertImpl<T> implements WithInsert<T> {

    
    private final JdbcAggregateTemplate template;

    public WithInsertImpl(JdbcAggregateTemplate template) {
        this.template = template;
    }
    
    @Override
    public T insert(T t) {
        // Todo Auto-generated method stub
        return template.insert(t);
    }

}

错误

2021-02-11 13:35:57.729 ERROR 28664 --- [nio-8181-exec-1] o.a.c.c.C.[.[.[.[dispatcherServlet]      : Servlet.service() for servlet [dispatcherServlet] in context with path [/usermanager] threw exception [Request processing Failed; nested exception is org.springframework.data.relational.core.conversion.DbActionExecutionException: Failed to execute DbAction.UpdateRoot(entity=User(id=1,userName=shelly,password=1234,email=soal@abc.com,createdTime=Thu Feb 11 05:53:25 IST 2021,updatedTime=Thu Feb 11 05:53:25 IST 2021,dateofBirth=null,userType=STUDENT))] with root cause

org.springframework.dao.IncorrectUpdateSemanticsDataAccessException: Failed to update entity [User(id=1,userType=STUDENT)]. Id [1] not found in database.
    at org.springframework.data.jdbc.core.JdbcAggregateChangeExecutionContext.updateWithoutVersion(JdbcAggregateChangeExecutionContext.java:369) ~[spring-data-jdbc-2.0.0.RELEASE.jar:2.0.0.RELEASE]
    at org.springframework.data.jdbc.core.JdbcAggregateChangeExecutionContext.executeUpdateRoot(JdbcAggregateChangeExecutionContext.java:114) ~[spring-data-jdbc-2.0.0.RELEASE.jar:2.0.0.RELEASE]
    at org.springframework.data.jdbc.core.AggregateChangeExecutor.execute(AggregateChangeExecutor.java:70) ~[spring-data-jdbc-2.0.0.RELEASE.jar:2.0.0.RELEASE]
    at org.springframework.data.jdbc.core.AggregateChangeExecutor.lambda$execute$0(AggregateChangeExecutor.java:50) ~[spring-data-jdbc-2.0.0.RELEASE.jar:2.0.0.RELEASE]
    at java.util.ArrayList.forEach(UnkNown Source) ~[na:1.8.0_271]
    at org.springframework.data.relational.core.conversion.DefaultAggregateChange.forEachAction(DefaultAggregateChange.java:116) ~[spring-data-relational-2.0.0.RELEASE.jar:2.0.0.RELEASE]
    at org.springframework.data.jdbc.core.AggregateChangeExecutor.execute(AggregateChangeExecutor.java:50) ~[spring-data-jdbc-2.0.0.RELEASE.jar:2.0.0.RELEASE]
    at org.springframework.data.jdbc.core.JdbcAggregateTemplate.store(JdbcAggregateTemplate.java:339) ~[spring-data-jdbc-2.0.0.RELEASE.jar:2.0.0.RELEASE]
    at org.springframework.data.jdbc.core.JdbcAggregateTemplate.save(JdbcAggregateTemplate.java:149) ~[spring-data-jdbc-2.0.0.RELEASE.jar:2.0.0.RELEASE]
    at org.springframework.data.jdbc.repository.support.SimpleJdbcRepository.save(SimpleJdbcRepository.java:55) ~[spring-data-jdbc-2.0.0.RELEASE.jar:2.0.0.RELEASE]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_271]
    at sun.reflect.NativeMethodAccessorImpl.invoke(UnkNown Source) ~[na:1.8.0_271]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(UnkNown Source) ~[na:1.8.0_271]
    at java.lang.reflect.Method.invoke(UnkNown Source) ~[na:1.8.0_271]
    at org.springframework.data.repository.core.support.ImplementationInvocationMetadata.invoke(ImplementationInvocationMetadata.java:72) ~[spring-data-commons-2.3.0.RELEASE.jar:2.3.0.RELEASE]
    at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:382) ~[spring-data-commons-2.3.0.RELEASE.jar:2.3.0.RELEASE]
    at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:205) ~[spring-data-commons-2.3.0.RELEASE.jar:2.3.0.RELEASE]
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:549) ~[spring-data-commons-2.3.0.RELEASE.jar:2.3.0.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.doInvoke(QueryExecutorMethodInterceptor.java:155) ~[spring-data-commons-2.3.0.RELEASE.jar:2.3.0.RELEASE]
    at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.invoke(QueryExecutorMethodInterceptor.java:130) ~[spring-data-commons-2.3.0.RELEASE.jar:2.3.0.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:366) ~[spring-tx-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:118) ~[spring-tx-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139) ~[spring-tx-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:95) ~[spring-aop-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212) ~[spring-aop-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at com.sun.proxy.$Proxy78.save(UnkNown Source) ~[na:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_271]
    at sun.reflect.NativeMethodAccessorImpl.invoke(UnkNown Source) ~[na:1.8.0_271]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(UnkNown Source) ~[na:1.8.0_271]
    at java.lang.reflect.Method.invoke(UnkNown Source) ~[na:1.8.0_271]
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344) ~[spring-aop-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198) ~[spring-aop-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139) ~[spring-tx-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212) ~[spring-aop-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at com.sun.proxy.$Proxy78.save(UnkNown Source) ~[na:na]
    at com.javabydeveloper.controller.UserController.createuser(UserController.java:82) ~[classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_271]
    at sun.reflect.NativeMethodAccessorImpl.invoke(UnkNown Source) ~[na:1.8.0_271]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(UnkNown Source) ~[na:1.8.0_271]
    at java.lang.reflect.Method.invoke(UnkNown Source) ~[na:1.8.0_271]
    at org.springframework.web.method.support.invocableHandlerMethod.doInvoke(invocableHandlerMethod.java:190) ~[spring-web-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.web.method.support.invocableHandlerMethod.invokeForRequest(invocableHandlerMethod.java:138) ~[spring-web-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.ServletinvocableHandlerMethod.invokeAndHandle(ServletinvocableHandlerMethod.java:105) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.web.servlet.dispatcherServlet.dodispatch(dispatcherServlet.java:1040) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.web.servlet.dispatcherServlet.doService(dispatcherServlet.java:943) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) ~[tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) ~[tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.35.jar:9.0.35]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) [tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) [tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) [tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590) [tomcat-embed-core-9.0.35.jar:9.0.35]
    at org.apache.tomcat.util.net.socketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.35.jar:9.0.35]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(UnkNown Source) [na:1.8.0_271]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(UnkNown Source) [na:1.8.0_271]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.35.jar:9.0.35]
    at java.lang.Thread.run(UnkNown Source) [na:1.8.0_271]

spring-data-source 的属性

#postgresql
spring.datasource.url=jdbc:postgresql://localhost:5432/Sample
spring.datasource.username=postgres
spring.datasource.password=sonal
spring.datasource.platform=postgresql
spring.datasource.driver-class-name=org.postgresql.Driver
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.PostgresqlDialect
spring.datasource.initialization-mode=always
spring.datasource.initialize=true
spring.datasource.continue-on-error=true
spring.jpa.hibernate.ddl-auto=none
spring.jpa.hibernate.show-sql=true

解决方法

Spring 有一个策略来决定实体何时是新的并且需要插入，或者实体是“旧的”并且需要更新。还有更多策略，第一个是决定对象的 @Id 属性中的值。 在您的对象中，id 显然填充了值 1，因此会触发更新（而不是插入）。 您应该修改您的 id 定义，并添加如下内容：

@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE,generator = 'USER_SEQ')
@SequenceGenerator(name = 'USER_SEQ',sequenceName = 'USER_SEQ',allocationSize = 1)
private Long id;

或者其他一些在后台处理 Id 值的策略。当然，不要在源代码中使用 setter 显式设置 id。

postgresqlspring-bootspring-data-jdbc