我在尝试使用 Springs CrudRepository 接口将实体持久保存到 PostgreSQL 数据库时遇到问题。在 TomEE 上设置正确的值和调整 Spring 本身的配置时，我遇到了很多问题。我尝试简单地使用休眠，但问题变得更糟，所以我切换回与 TomEE 捆绑的 OpenJpa。
我对普通的 JavaEE 有一些经验，并且正在创建这个应用程序来学习 Spring，我的一个朋友需要一个 Spring 应用程序来在基于 TomEE 的 ApplicationServer 上进行部署，因此这两个是必需的。我附加的代码量可能有点过火，但我宁愿让你看看那里有什么，以便你得到一个很好的概述。
我开发的组件以及我正在做的、期望的和实际看到的内容的简要描述。组件：
- CoworkerController（RESTful Spring 控制器）
- CoworkerService（与 Controller 和 Repository 交互的 Spring Service）
- CoworkerRepository（扩展 Spring CrudRepository）
- 同事（应该被持久化的实体）
我的行动流程：
- 通过 curl 将带有 firstname lastname 的 POST 发送到 RESTful 服务
- 使用持久化实体的 ID 获取状态 200
- 如果我可以查询我创建的同事，请检查 PostgreSQL 和 RESTful 服务
我所期待的：
- Controller 接受 POST 并调用 Service 来持久化 Coworker
- 服务告诉存储库保存同事
- 存储库通过 Spring 魔法持久化同事实体
- 连接到 DataSource、创建 ID 并在成功时返回实体的 Spring/OpenJPA 魔术
- 在此期间查看 SQL 查询
- Repository 接收持久化的 Entity 并返回到 Service
- 服务将实体返回给控制器
- 控制器将 Entity.id 返回给 REST 服务的调用者
我看到的和我没有看到但希望看到的：
- 控制器按预期工作
- 服务记录正确的用户信息
- @PrePersist 创建一个日期对象（记录器）
- 关于 openjpa 序列查询的 SQL 语句日志
- 缺失：没有关于持久化我的实体的 SQL INSERT 语句
- 存储库将新同事返回到服务
- 服务使用creationDate和id（例如1）记录应该是持久化的实体
- 控制器将 id 返回给 REST 的调用者（例如 1）
- REST 和 SQL 查询都不显示数据库中的任何同事 :(
在尝试了通过 google、SO 和大量教程找到的所有不同类型的故障排除后，我的配置文件变得非常混乱。在花了几天时间试图找出问题所在之后，我现在来到这里，希望您能指出我的错误。
同事.java
@Entity
public class Coworker implements Serializable {
@Transient
Logger logger = LoggerFactory.getLogger(this.getClass());
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE)
private Long coworkerId;
private String firstName;
private String lastName;
@Temporal(TemporalType.DATE)
private Date creationDate;
@Temporal(TemporalType.DATE)
private Date lastUpdatedDate;
@OneToMany(cascade = CascadeType.ALL, mappedBy = "coworker", fetch = FetchType.EAGER)
private Set<Timeframe> timeframes = new HashSet<Timeframe>();
@PrePersist
private void setDateBeforePersisting() {
logger.info("Inside prepersisting a Coworker");
creationDate = new Date();
// Set the last updated Date to the creation date
lastUpdatedDate = (Date) creationDate.clone();
}
// ...snip.. Getters, Setters, equals, hashcode created by IDEA here
}
CoworkerController.java
@Controller
@RequestMapping(value = "coworker")
public class CoworkerController {
@Autowired
CoworkerService service;
Logger logger = LoggerFactory.getLogger(this.getClass());
@RequestMapping(method = RequestMethod.POST)
@ResponseBody
public Long create(@RequestBody Coworker coworker) {
logger.info("Post to create Coworker.");
if (coworker == null) {
logger.info("Coworker == null");
} else {
logger.info("Coworker.firstName: " + coworker.getFirstName() + " Coworker.lastName: " + coworker.getLastName());
}
final Coworker coworker1 = service.addNewCoworker(coworker);
logger.info("Persisted coworker, id: " + coworker1.getCoworkerId());
return coworker1.getCoworkerId();
}
}
CoworkerServiceImpl.java
@Service
@Transactional(readOnly = false, propagation = Propagation.REQUIRED)
public class CoworkerServiceImpl implements CoworkerService {
Logger logger = LoggerFactory.getLogger(this.getClass());
@Override
public Coworker addNewCoworker(Coworker coworker) {
logger.info("Service saving coworker: " + coworker.getFirstName() + " " + coworker.getLastName());
final Coworker save = repo.save(coworker);
logger.info("Service saved coworker, is it != null? " + (save != null));
logger.info("First name: " + save.getFirstName() + " Last name: " + save.getLastName() + " Date created: " + save.getCreationDate() + " id: " + save.getCoworkerId());
return save;
}
}
CoworkerRepository.java
public interface CoworkerRepository extends CrudRepository<Coworker, Long> {
// Several queries here, but nothing that should interfer with
// CrudRepository.save(S)
}
持久性.xml
<?xml version="1.0" encoding="UTF-8" ?>
<persistence xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0" xmlns="http://java.sun.com/xml/ns/persistence">
<persistence-unit name="timeregistration" transaction-type="RESOURCE_LOCAL">
<non-jta-data-source>java:/comp/env/jdbc/timeregistration</non-jta-data-source>
<class>org.xezz.timeregistration.model.Coworker</class>
<class>org.xezz.timeregistration.model.Customer</class>
<class>org.xezz.timeregistration.model.Project</class>
<class>org.xezz.timeregistration.model.Timeframe</class>
</persistence-unit>
</persistence>
timeregistration-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/data/jpa
http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
<mvc:resources mapping="/static/**" location="/static/"/>
<mvc:default-servlet-handler/>
<mvc:annotation-driven />
<jpa:repositories base-package="org.xezz.timeregistration.repositories"/>
<context:component-scan base-package="org.xezz.timeregistration" />
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="persistenceUnitName" value="timeregistration"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.OpenJpaVendorAdapter">
<property name="generateDdl" value="true"/>
<property name="database" value="POSTGRESQL"/>
<property name="showSql" value="true"/>
</bean>
</property>
</bean>
<bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="java:/comp/env/jdbc/timeregistration"/>
<property name="resourceRef" value="true" />
</bean>
<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
<property name="mediaTypes">
<map>
<entry key="html" value="text/html"/>
<entry key="json" value="application/json"/>
</map>
</property>
<property name="viewResolvers">
<list>
<bean class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
</list>
</property>
<property name="defaultViews">
<list>
<bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView">
<property name="prefixJson" value="true"/>
</bean>
</list>
</property>
</bean>
</beans>
控制台日志
Mai 09, 2013 11:16:03 PM org.xezz.timeregistration.controller.CoworkerController create
Information: Post to create Coworker.
Mai 09, 2013 11:16:03 PM org.xezz.timeregistration.controller.CoworkerController create
Information: Coworker.firstName: Bastian Coworker.lastName: Koch
Mai 09, 2013 11:16:03 PM org.xezz.timeregistration.services.impl.CoworkerServiceImpl addNewCoworker
Information: Service saving coworker: Bastian Koch
Mai 09, 2013 11:16:03 PM org.xezz.timeregistration.model.Coworker setDateBeforePersisting
Information: Inside prepersisting a Coworker
Mai 09, 2013 11:16:03 PM org.xezz.timeregistration.services.impl.CoworkerServiceImpl addNewCoworker
Information: Service saved coworker, is it != null? true
59370 timeregistration TRACE [http-bio-8080-exec-1] openjpa.jdbc.SQL - <t 1732295982, conn 850080749> executing prepstmnt 553961214 SELECT SEQUENCE_VALUE FROM OPENJPA_SEQUENCE_TABLE WHERE ID = ? FOR UPDATE [params=?]
59421 timeregistration TRACE [http-bio-8080-exec-1] openjpa.jdbc.SQL - <t 1732295982, conn 850080749> [50 ms] spent
59423 timeregistration TRACE [http-bio-8080-exec-1] openjpa.jdbc.SQL - <t 1732295982, conn 683618612> executing prepstmnt 540500434 INSERT INTO OPENJPA_SEQUENCE_TABLE (ID, SEQUENCE_VALUE) VALUES (?, ?) [params=?, ?]
59474 timeregistration TRACE [http-bio-8080-exec-1] openjpa.jdbc.SQL - <t 1732295982, conn 683618612> [50 ms] spent
59476 timeregistration TRACE [http-bio-8080-exec-1] openjpa.jdbc.SQL - <t 1732295982, conn 334967428> executing prepstmnt 512431903 SELECT SEQUENCE_VALUE FROM OPENJPA_SEQUENCE_TABLE WHERE ID = ? FOR UPDATE [params=?]
59479 timeregistration TRACE [http-bio-8080-exec-1] openjpa.jdbc.SQL - <t 1732295982, conn 334967428> [3 ms] spent
59480 timeregistration TRACE [http-bio-8080-exec-1] openjpa.jdbc.SQL - <t 1732295982, conn 334967428> executing prepstmnt 1033569251 UPDATE OPENJPA_SEQUENCE_TABLE SET SEQUENCE_VALUE = ? WHERE ID = ? AND SEQUENCE_VALUE = ? [params=?, ?, ?]
59493 timeregistration TRACE [http-bio-8080-exec-1] openjpa.jdbc.SQL - <t 1732295982, conn 334967428> [12 ms] spent
Mai 09, 2013 11:16:04 PM org.xezz.timeregistration.services.impl.CoworkerServiceImpl addNewCoworker
Information: First name: Bastian Last name: Koch Date created: Thu May 09 23:16:03 CEST 2013 id: 1
Mai 09, 2013 11:16:04 PM org.xezz.timeregistration.controller.CoworkerController create
Information: Persisted coworker, id: 1
tomee.xml
<?xml version="1.0" encoding="UTF-8"?>
<tomee>
<Resource id="jdbc/timeregistration" type="DataSource">
JdbcDriver org.postgresql.Driver
JdbcUrl jdbc:postgresql://localhost/timeregdb
UserName timereg
Password supersecretpassword
jtaManaged false
InitialSize 0
MaxWait 50
MaxActive 20
MaxIdle 20
</Resource>
</tomee>
pom.xml
<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>org.xezz</groupId>
<artifactId>timeregistration</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<junit.version>4.11</junit.version>
<javax-persistence.version>2.0.0</javax-persistence.version>
<javax-inject.version>1</javax-inject.version>
<spring.version>3.2.2.RELEASE</spring.version>
<spring-data.version>1.3.1.RELEASE</spring-data.version>
<jackson.version>2.1.4</jackson.version>
<jackson-mapper-asl.version>1.9.12</jackson-mapper-asl.version>
<jaxb-api.version>2.2.7</jaxb-api.version>
<slf4j-api.version>1.7.1</slf4j-api.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j-api.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>javax.persistence</artifactId>
<version>${javax-persistence.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>${spring-data.version}</version>
</dependency>
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>${javax-inject.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>${jackson-mapper-asl.version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>${jaxb-api.version}</version>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.1</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
感谢您提前提供的任何帮助，我现在浪费了很多时间试图追踪不同的错误（尤其是在休眠的东西之后，这比我敢说的要费时），所以现在我只需要问别人查看此内容并与我分享智慧，如果您需要更多信息，请不要犹豫（如果需要，我可以使用当前代码库更新 github）。