尝试发布到休息端点时出错。春季启动/JPA答案

【问题标题】：Error when trying to post to rest endpoint. Spring Boot/JPA尝试发布到休息端点时出错。春季启动/JPA
【发布时间】：2019-04-22 11:03:34
【问题描述】：

我在尝试将数据发布到其余端点时遇到问题。这是他的相关代码。

来自 C-URL

curl -d '{"description":"description", "image":[80,5,78], "name":"Peter"}' -H 'Content-Type: application/json' http://localhost:8080/abouts

- 这是我在 C-URL 响应中得到的错误

{"timestamp":"2018-11-20T07:45:18.961+0000","status":500,"error":"Internal Server Error","message":"could not prepare statement; SQL [insert into about (id, description, image, name) values (null, ?, ?, ?)]; nested exception is org.hibernate.exception.SQLGrammarException: could not prepare statement","path":"/abouts"}

--schema.sql

create sequence hibernate_sequence start with 1 increment by 1
create table about (id bigint not null, description varchar(255), image binary(255), name varchar(255), primary key (id))
create table article (id bigint not null, description varchar(255), image binary(255), name varchar(255), primary key (id))
create table menu_item (id bigint not null, description varchar(255), image binary(255), name varchar(255), primary key (id))

--实体类

@Data
public class About {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private Long id;
@NotEmpty
private String name;
@NotEmpty
private String description;
private byte[] image;
}

--RestController

package coffee.controller;

import coffee.*;
import coffee.data.AboutRepository;

import java.util.Optional;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.EmptyResultDataAccessException;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;



@RestController
@RequestMapping(path="abouts",
                produces="application/json",
                consumes="application/json")
@CrossOrigin(origins="*")
public class AboutController {

    private AboutRepository aboutRepo;

    public AboutController(AboutRepository aboutRepo) {
        this.aboutRepo = aboutRepo;
    }

    @GetMapping
    public Iterable<About> getAbouts() {
        return aboutRepo.findAll();
    }

    @GetMapping("/{aboutId}")
    public ResponseEntity<About> aboutById(@PathVariable("aboutId") Long id) {
        Optional<About> optAbout = aboutRepo.findById(id);
        if (optAbout.isPresent()){
            return new ResponseEntity<>(optAbout.get(), HttpStatus.OK);
        }
        return new ResponseEntity<>(null, HttpStatus.NOT_FOUND);
    }

    @PostMapping
    @ResponseStatus(HttpStatus.CREATED)
    public About postAbout(@RequestBody About about) {
        return aboutRepo.save(about);
    }

    @PutMapping("/{aboutId}")
    public About putAbout(@RequestBody About about) {
        return aboutRepo.save(about);
    }

    @DeleteMapping("/{aboutId")
    @ResponseStatus(code = HttpStatus.NO_CONTENT)
    public void deleteEvent (@PathVariable("aboutId") Long aboutId) {
        try {
            aboutRepo.deleteById(aboutId);
        }catch (EmptyResultDataAccessException e) {
        }
    }
}

--AboutRepo 只使用 Spring 生成的存储库

package coffee.data;

import org.springframework.data.repository.CrudRepository;

import coffee.*;

public interface AboutRepository extends CrudRepository<About, Long> {

}

在 C-URL 中执行 post 时 STS 控制台出错

 org.h2.jdbc.JdbcSQLException: Sequence "HIBERNATE_SEQUENCE" not found; SQL statement:
call next value for hibernate_sequence [90036-197]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:357) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.message.DbException.get(DbException.java:179) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.message.DbException.get(DbException.java:155) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.readSequence(Parser.java:5970) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.readTerm(Parser.java:3131) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.readFactor(Parser.java:2587) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.readSum(Parser.java:2574) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.readConcat(Parser.java:2544) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.readCondition(Parser.java:2370) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.readAnd(Parser.java:2342) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.readExpression(Parser.java:2334) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.parseCall(Parser.java:4854) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.parsePrepared(Parser.java:382) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.parse(Parser.java:335) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.parse(Parser.java:307) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.prepareCommand(Parser.java:278) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.engine.Session.prepareLocal(Session.java:611) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.engine.Session.prepareCommand(Session.java:549) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1247) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.jdbc.JdbcPreparedStatement.<init>(JdbcPreparedStatement.java:76) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.jdbc.JdbcConnection.prepareStatement(JdbcConnection.java:304) ~[h2-1.4.197.jar:1.4.197]
    at com.zaxxer.hikari.pool.ProxyConnection.prepareStatement(ProxyConnection.java:318) ~[HikariCP-2.7.9.jar:na]
    at com.zaxxer.hikari.pool.HikariProxyConnection.prepareStatement(HikariProxyConnection.java) ~[HikariCP-2.7.9.jar:na]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$1.doPrepare(StatementPreparerImpl.java:86) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:171) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareStatement(StatementPreparerImpl.java:72) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.id.enhanced.SequenceStructure$1.getNextValue(SequenceStructure.java:93) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.id.enhanced.NoopOptimizer.generate(NoopOptimizer.java:40) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.id.enhanced.SequenceStyleGenerator.generate(SequenceStyleGenerator.java:452) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:105) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId(JpaPersistEventListener.java:67) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:189) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:132) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:58) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:783) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:768) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
    at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:350) ~[spring-orm-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at com.sun.proxy.$Proxy104.persist(Unknown Source) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
    at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:305) ~[spring-orm-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at com.sun.proxy.$Proxy104.persist(Unknown Source) ~[na:na]
    at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:490) ~[spring-data-jpa-2.0.11.RELEASE.jar:2.0.11.RELEASE]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
    at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:377) ~[spring-data-commons-2.0.11.RELEASE.jar:2.0.11.RELEASE]
    at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:200) ~[spring-data-commons-2.0.11.RELEASE.jar:2.0.11.RELEASE]
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:641) ~[spring-data-commons-2.0.11.RELEASE.jar:2.0.11.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:605) ~[spring-data-commons-2.0.11.RELEASE.jar:2.0.11.RELEASE]
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:590) ~[spring-data-commons-2.0.11.RELEASE.jar:2.0.11.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:59) ~[spring-data-commons-2.0.11.RELEASE.jar:2.0.11.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294) ~[spring-tx-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98) ~[spring-tx-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139) ~[spring-tx-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:135) ~[spring-data-jpa-2.0.11.RELEASE.jar:2.0.11.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) ~[spring-aop-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61) ~[spring-data-commons-2.0.11.RELEASE.jar:2.0.11.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212) ~[spring-aop-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at com.sun.proxy.$Proxy106.save(Unknown Source) ~[na:na]
    at coffee.controller.AboutController.postAbout(AboutController.java:46) ~[classes/:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:209) ~[spring-web-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136) ~[spring-web-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) ~[spring-webmvc-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:891) ~[spring-webmvc-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797) ~[spring-webmvc-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:991) ~[spring-webmvc-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925) ~[spring-webmvc-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:974) ~[spring-webmvc-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:877) ~[spring-webmvc-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:661) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851) ~[spring-webmvc-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat-embed-websocket-8.5.34.jar:8.5.34]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.springframework.boot.actuate.web.trace.servlet.HttpTraceFilter.doFilterInternal(HttpTraceFilter.java:90) ~[spring-boot-actuator-2.0.6.RELEASE.jar:2.0.6.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109) ~[spring-web-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) ~[spring-web-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:155) ~[spring-boot-actuator-2.0.6.RELEASE.jar:2.0.6.RELEASE]
    at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:123) ~[spring-boot-actuator-2.0.6.RELEASE.jar:2.0.6.RELEASE]
    at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:108) ~[spring-boot-actuator-2.0.6.RELEASE.jar:2.0.6.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) ~[spring-web-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:800) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na]
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-8.5.34.jar:8.5.34]
    at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]

当我更改 @GeneratedValue(strategy=GenerationType.IDENTITY) 时，它仍然在 C-URL 和 STS 控制台中显示一条错误消息，但显示的是不同的错误消息。卷曲

{"timestamp":"2018-11-20T08:01:15.230+0000","status":500,"error":"Internal Server Error","message":"could not prepare statement; SQL [insert into about (id, description, image, name) values (null, ?, ?, ?)]; nested exception is org.hibernate.exception.SQLGrammarException: could not prepare statement","path":"/abouts"}

STS 控制台

org.h2.jdbc.JdbcSQLException: Table "ABOUT" not found; SQL statement:
insert into about (id, description, image, name) values (null, ?, ?, ?) [42102-197]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:357) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.message.DbException.get(DbException.java:179) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.message.DbException.get(DbException.java:155) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.readTableOrView(Parser.java:5920) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.readTableOrView(Parser.java:5897) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.parseInsert(Parser.java:1220) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.parsePrepared(Parser.java:431) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.parse(Parser.java:335) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.parse(Parser.java:307) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.command.Parser.prepareCommand(Parser.java:278) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.engine.Session.prepareLocal(Session.java:611) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.engine.Session.prepareCommand(Session.java:549) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1247) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.jdbc.JdbcPreparedStatement.<init>(JdbcPreparedStatement.java:76) ~[h2-1.4.197.jar:1.4.197]
    at org.h2.jdbc.JdbcConnection.prepareStatement(JdbcConnection.java:1166) ~[h2-1.4.197.jar:1.4.197]
    at com.zaxxer.hikari.pool.ProxyConnection.prepareStatement(ProxyConnection.java:325) ~[HikariCP-2.7.9.jar:na]
    at com.zaxxer.hikari.pool.HikariProxyConnection.prepareStatement(HikariProxyConnection.java) ~[HikariCP-2.7.9.jar:na]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$2.doPrepare(StatementPreparerImpl.java:105) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:171) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareStatement(StatementPreparerImpl.java:107) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.dialect.identity.GetGeneratedKeysDelegate.prepare(GetGeneratedKeysDelegate.java:51) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:39) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2933) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3524) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:81) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:637) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:282) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:263) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:317) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:318) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:275) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:182) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:113) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId(JpaPersistEventListener.java:67) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]

【问题讨论】：

分享您的完整错误堆栈跟踪。
我的程序启动正常，没有错误，但堆栈跟踪错误
你能附上 aboutRepo.save 方法吗？我认为 JSON 是正确的。它是在插入对象失败的地方。即使在调用 aboutRepo.save 之前，带有错误 JSON 的 rest 调用也会失败。
添加，repo只是使用spring数据生成的repository
好的，谢谢。在调试中，您是否看到在 postAbout 方法中正确创建了 About 对象？

标签： json spring rest spring-boot jpa

【解决方案1】：

尝试从 About 类的数据成员中删除 final 关键字，然后生成 Getter 和 Setter。像这样的：

关于.java

package com.example;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.validation.constraints.NotEmpty;

@Entity
public class About {
    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Long id;
    @NotEmpty
    private String name;
    @NotEmpty
    private String description;
    private byte[] image;

    public Long getId() {
        return id;
    }
    public void setId(Long id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getDescription() {
        return description;
    }
    public void setDescription(String description) {
        this.description = description;
    }
    public byte[] getImage() {
        return image;
    }
    public void setImage(byte[] image) {
        this.image = image;
    }

}

AboutRepository.java

package com.example;

import org.springframework.data.repository.CrudRepository;

public interface AboutRepository extends CrudRepository<About, Long>{

}

查看完整代码请参考：https://github.com/kunalpurimkbk/stackoverflow_53385609/

【讨论】：

我认为我的问题不清楚，抱歉。我试图使用 c-url 使用 JSON 将数据发布到其余端点。但是，我不确定我的 JSON 语法应该如何查找我的实体
我尝试在编辑前发送您在问题中提到的 JSON。它工作得很好。我也不认为 JSON 有任何问题。
在 c-url 中发送 post 方法时更改了实体类并收到上面更新的新错误
c-url响应还是和上面一样，新的错误在sts控制台
@Peter 我正在使用 Postman 发送有效载荷 {"description":"description", "image":[80,5,78], "name":"Peter"}，它工作正常。甚至@GeneratedValue(strategy=GenerationType.AUTO) 也为我工作。

【解决方案2】：

正如 Kunal 所说，您需要从 About 类成员中删除 final 关键字并添加 getter 和 setter。

仍然缺少的是为 id 添加适当的序列生成器。默认情况下，需要 hibernate_sequence 表来保存 id 的序列。为了使事情正常工作，您需要添加：

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;

【讨论】：