问题
Hi I am new to Spring Boot. I try to connect to Oracle and list related records. My code worked in a stub environment, that is without connecting to a db. When I tried to connect to the db from Spring, I got the error as given in EDIT 2:
HomeController
package blog.controllers;
import blog.models.Post;
import blog.services.PostService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import java.util.List;
import java.util.stream.Collectors;
@Controller
public class HomeController {
@Autowired
private PostService postService;
@RequestMapping("/")
public String index(Model model){
List<Post> latest5Posts = postService.findLatest5();
model.addAttribute("latest5posts", latest5Posts);
List<Post> latest3Posts = latest5Posts.stream()
.limit(3).collect(Collectors.toList());
model.addAttribute("latest3posts", latest3Posts);
return "index";
}
}
Posts Entity class
package blog.models;
import javax.persistence.*;
import java.util.Date;
@Entity
@Table(name = "POSTS")
public class Post {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Column(nullable = false, length = 300)
private String title;
@Lob @Column(nullable = false)
private String body;
@ManyToOne(optional = false, fetch = FetchType.LAZY)
private User author;
@Column(nullable = false)
private Date creation_date = new Date();
public Long getId() {return id;}
public void setId(Long id) {this.id = id;}
public String getTitle() {return title;}
public void setTitle(String title) {this.title = title;}
public String getBody() {return body;}
public void setBody(String body) {this.body = body;}
public User getAuthor() {return author;}
public void setAuthor(User author) {this.author = author;}
public Date getCreation_date() {return date;}
public void setCreation_date(Date creation_date) {this.creation_date = creation_date;}
public Post() { }
public Post(Long id, String title, String body, User author) {
this.id=id; this.title=title; this.body=body; this.author=author;
}
@Override
public String toString() {
return "Post{" + "id=" + id + ", title='" + title + '\'' +
", body='" + body + '\'' +
", author='" + author + '\'' +
", date=" + Creationdate +
'}';
}
}
Users Entity class
package blog.models;
import javax.persistence.*;
import java.util.HashSet;
import java.util.Set;
@Entity
@Table(name = "users")
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Column(nullable = false, length = 30, unique = true)
private String username;
@Column(length = 60)
private String passwordHash;
@Column(length = 100)
private String fullName;
@OneToMany(mappedBy = "author")
private Set<Post> posts = new HashSet<>();
public Long getId() {return id;}
public void setId(Long id) {this.id = id;}
public String getUsername() {return username;}
public void setUsername(String username) {this.username = username;}
public String getPasswordHash() {return passwordHash;}
public void setPasswordHash(String passwordHash) {this.passwordHash = passwordHash;}
public String getFullName() {return fullName;}
public void setFullName(String fullName) {this.fullName = fullName;}
public Set<Post> getPosts() {return posts;}
public void setPosts(Set<Post> posts) {this.posts = posts;}
public User() { }
public User(Long id, String username, String fullName) {
this.id = id; this.username = username; this.fullName = fullName;
}
@Override
public String toString() {
return "User{" + "id=" + id + ", username='" + username + '\'' +
", passwordHash='" + passwordHash + '\'' +
", fullName='" + fullName + '\'' + '}';
}
}
Repository
package blog.repositories;
import blog.models.Post;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import org.springframework.stereotype.Repository;
import org.springframework.data.domain.Pageable;
import java.util.List;
@Repository
public interface PostRepository extends JpaRepository<Post, Long> {
@Query("SELECT p FROM Post p LEFT JOIN FETCH p.author ORDER BY p.creation_date DESC")
List<Post> findLatest5Posts(Pageable pageable);
}
Service
package blog.services;
import blog.models.Post;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public interface PostService {
List<Post> findAll();
List<Post> findLatest5();
Post findById(Long id);
Post create(Post post);
Post edit(Post post);
void deleteById(Long id);
}
Service Implementation
package blog.services;
import blog.models.Post;
import blog.repositories.PostRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Primary;
import org.springframework.data.domain.PageRequest;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
@Primary
public class PostServiceJpaImpl implements PostService {
@Autowired
private PostRepository postRepository;
@Override
public List<Post> findAll() {
return this.postRepository.findAll();
}
@Override
public List<Post> findLatest5() {
return this.postRepository.findLatest5Posts(new PageRequest(0, 5));
}
@Override
public Post findById(Long id) {
return this.postRepository.findOne(id);
}
@Override
public Post create(Post post) {
return this.postRepository.save(post);
}
@Override
public Post edit(Post post) {
return this.postRepository.save(post);
}
@Override
public void deleteById(Long id) {
this.postRepository.delete(id);
}
}
As for my tables in the db:
create table users (
id number,
username varchar2(30),
passwordHash varchar2(60),
fullName varchar2(100),
constraint users_pk primary key (id));
create table posts (
id number,
author_id number,
title varchar2(300),
body clob,
creation_date timestamp,
primary key (id));
p.s. I have also tried the following by changing the repository:
@Query(value = "SELECT * FROM POSTS aa LEFT JOIN USERS bb ON aa.AUTHOR_ID=bb.ID", nativeQuery = true)
This time I had the following error:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
at ...
Caused by: org.hibernate.tool.schema.spi.SchemaManagementException: Unable to execute schema management to JDBC target [alter table posts add constraint FK6xvn0811tkyo3nfjk2xvqx6ns foreign key (author_id) references users]
at org.hibernate.tool.schema.internal.TargetDatabaseImpl.accept(TargetDatabaseImpl.java:59) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.applySqlString(SchemaMigratorImpl.java:431) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.applySqlStrings(SchemaMigratorImpl.java:420) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.applyForeignKeys(SchemaMigratorImpl.java:386) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.doMigrationToTargets(SchemaMigratorImpl.java:214) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.doMigration(SchemaMigratorImpl.java:60) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:134) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:101) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:470) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:444) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:879) ~[hibernate-entitymanager-5.0.9.Final.jar:5.0.9.Final]
... 27 common frames omitted
Caused by: java.sql.SQLSyntaxErrorException: ORA-02268: referenced table does not have a primary key
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:439) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:395) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:802) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:436) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:186) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:521) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:194) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.T4CStatement.executeForRows(T4CStatement.java:1000) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1307) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.OracleStatement.executeUpdateInternal(OracleStatement.java:1814) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.OracleStatement.executeUpdate(OracleStatement.java:1779) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.OracleStatementWrapper.executeUpdate(OracleStatementWrapper.java:277) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at org.hibernate.tool.schema.internal.TargetDatabaseImpl.accept(TargetDatabaseImpl.java:56) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
... 37 common frames omitted
What am I missing?
Thanks in advance!
EDIT:
POM.XML
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>softuni</groupId>
<artifactId>mvc-blog</artifactId>
<version>1.0-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.0.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
<exclusions>
<exclusion>
<artifactId>jackson-databind</artifactId>
<groupId>com.fasterxml.jackson.core</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>2.10.0</version>
</dependency>
<dependency>
<groupId>cosine-lsh</groupId>
<artifactId>cosinelsh</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version>11.2.0.4</version>
</dependency>
</dependencies>
<properties>
<java.version>1.8</java.version>
<spark.version>1.4.1</spark.version>
<!--<scala.version>2.10.0</scala.version>-->
</properties>
</project>
application.properties
#Turn off Thymeleaf cache
spring.thymeleaf.cache = false
spring.datasource.driver-class-name = oracle.jdbc.driver.OracleDriver
spring.datasource.url = jdbc:oracle:thin:@...
spring.datasource.username = usrnm
spring.datasource.password = psswrd
# Configure Hibernate DDL mode: create / update
spring.jpa.properties.hibernate.hbm2ddl.auto = update
#hibernate config
spring.jpa.database-platform=org.hibernate.dialect.Oracle10gDialect
spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
spring.data.jpa.repositories.enabled=true
# Show or not log for each sql query
spring.jpa.show-sql = true
user repository
package blog.repositories;
import blog.models.User;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
@Repository
public interface UserRepository extends JpaRepository<User, Long> {
}
user service
package blog.services;
import blog.models.User;
import java.util.List;
public interface UserService {
List<User> findAll();
User findById(Long id);
User create(User user);
User edit(User user);
void deleteById(Long id);
}
user service implementation
package blog.services;
import blog.models.User;
import blog.repositories.UserRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Primary;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
@Primary
public class UserServiceJpaImpl implements UserService {
@Autowired
private UserRepository userRepository;
@Override
public List<User> findAll() {
return this.userRepository.findAll();
}
@Override
public User findById(Long id) {
return this.userRepository.findOne(id);
}
@Override
public User create(User user) {
return this.userRepository.save(user);
}
@Override
public User edit(User user) {
return this.userRepository.save(user);
}
@Override
public void deleteById(Long id) {
this.userRepository.delete(id);
}
}
@SpringBootApplication
package blog;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class BlogMvcApplication {
public static void main(String[] args) {
SpringApplication.run(BlogMvcApplication.class, args);
}
}
EDIT 2:
Error lines for JPA query (when native query is not used)
java.sql.SQLSyntaxErrorException: ORA-01747: invalid user.table.column, table.column, or column specification
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:439) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:395) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:802) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:436) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:186) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:521) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:205) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:861) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1145) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1267) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3449) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3493) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1491) ~[ojdbc6-11.2.0.4.jar:11.2.0.1.0]
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:70) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.loader.Loader.getResultSet(Loader.java:2117) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1900) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1876) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.loader.Loader.doQuery(Loader.java:919) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:336) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.loader.Loader.doList(Loader.java:2617) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.loader.Loader.doList(Loader.java:2600) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2429) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.loader.Loader.list(Loader.java:2424) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:501) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:371) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:216) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1326) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.internal.QueryImpl.list(QueryImpl.java:87) ~[hibernate-core-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.jpa.internal.QueryImpl.list(QueryImpl.java:606) ~[hibernate-entitymanager-5.0.9.Final.jar:5.0.9.Final]
at org.hibernate.jpa.internal.QueryImpl.getResultList(QueryImpl.java:483) ~[hibernate-entitymanager-5.0.9.Final.jar:5.0.9.Final]
at org.springframework.data.jpa.repository.query.JpaQueryExecution$CollectionExecution.doExecute(JpaQueryExecution.java:114) ~[spring-data-jpa-1.10.2.RELEASE.jar:na]
at org.springframework.data.jpa.repository.query.JpaQueryExecution.execute(JpaQueryExecution.java:78) ~[spring-data-jpa-1.10.2.RELEASE.jar:na]
at org.springframework.data.jpa.repository.query.AbstractJpaQuery.doExecute(AbstractJpaQuery.java:102) ~[spring-data-jpa-1.10.2.RELEASE.jar:na]
at org.springframework.data.jpa.repository.query.AbstractJpaQuery.execute(AbstractJpaQuery.java:92) ~[spring-data-jpa-1.10.2.RELEASE.jar:na]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:482) ~[spring-data-commons-1.12.2.RELEASE.jar:na]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:460) ~[spring-data-commons-1.12.2.RELEASE.jar:na]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:61) ~[spring-data-commons-1.12.2.RELEASE.jar:na]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) ~[spring-tx-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:280) ~[spring-tx-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) ~[spring-tx-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) ~[spring-tx-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:133) ~[spring-data-jpa-1.10.2.RELEASE.jar:na]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at com.sun.proxy.$Proxy87.findLatest5Posts(Unknown Source) ~[na:na]
at blog.services.PostServiceJpaImpl.findLatest5(PostServiceJpaImpl.java:23) ~[classes/:na]
at blog.controllers.HomeController.index(HomeController.java:26) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_31]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_31]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_31]
at java.lang.reflect.Method.invoke(Method.java:483) ~[na:1.8.0_31]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) ~[spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136) ~[spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:114) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) ~[tomcat-embed-core-8.5.4.jar:8.5.4]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) ~[tomcat-embed-core-8.5.4.jar:8.5.4]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230) ~[tomcat-embed-core-8.5.4.jar:8.5.4]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.4.jar:8.5.4]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat-embed-websocket-8.5.4.jar:8.5.4]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.4.jar:8.5.4]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.4.jar:8.5.4]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.4.jar:8.5.4]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.4.jar:8.5.4]
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:87) ~[spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.4.jar:8.5.4]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.4.jar:8.5.4]
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77) ~[spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.4.jar:8.5.4]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.4.jar:8.5.4]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) ~[spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]
回答1:
It seems that the problem is following:
Because of this property:
spring.jpa.properties.hibernate.hbm2ddl.auto = update
And the fact that the Posts entity has been changed to reference the User, Hibernate tries to add a foreign key constraint:
alter table posts add constraint FK6xvn0811tkyo3nfjk2xvqx6ns foreign key (author_id) references users
But gets this error:
ORA-02268: referenced table does not have a primary key
Not sure why hibernate does not add a primary key to this table as the @Id annotation is clearly there.
Try to add a primary key constraint manually to the Users.id column:
ALTER TABLE users
ADD CONSTRAINT users_pk PRIMARY KEY (id);
Update
The problem might with the Post.data mapping as you are using it in the order by clause.
The doc says:
This annotation must be specified for persistent fields or properties of type java.util.Date and java.util.Calendar. It may only be specified for fields or properties of these types.
As you are using java.util.Date, then you need to add this:
@Temporal(TemporalType.DATE)
private Date date = new Date();
来源：https://stackoverflow.com/questions/42441184/spring-boot-hibernate-query-invalid-user-error