Spring Boot:无法推断用于java.time.LocalDateTime实例的SQL类型

Question

Spring Boot:无法推断用于java.time.LocalDateTime实例的SQL类型

mCs*_*mCs 6 spring spring-jdbc jdbctemplate spring-boot

我JdbcInvoiceRepository在Spring Boot项目中执行了以下方法(下面的完整类):

public int[] bulkSaveInvoices(List<Invoice> invoices){

    String insertSQL = "INSERT INTO invoices VALUES (:id, :exactIssueTime, :finalIssueTime, :issuer, :groupID)";
    SqlParameterSource[] sqlParams = SqlParameterSourceUtils.createBatch(invoices.toArray());

    int[] insertCounts = namedParameterJdbcTemplate.batchUpdate(insertSQL, sqlParams);

    return insertCounts;
}

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我提供了转换器:

??? Invoice.java
??? InvoiceRepository.java
??? persistance
    ??? converters
    ?   ??? LocalDateAttributeConverter.java
    ?   ??? LocalDateTimeAttributeConverter.java
    ??? JdbcInvoiceRepository.java

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转换器LocalDateTime:

@Converter(autoApply = true)
public class LocalDateTimeAttributeConverter implements AttributeConverter<LocalDateTime, Timestamp> {

    @Override
    public Timestamp convertToDatabaseColumn(LocalDateTime locDateTime) {
        return (locDateTime == null ? null : Timestamp.valueOf(locDateTime));
    }

    @Override
    public LocalDateTime convertToEntityAttribute(Timestamp sqlTimestamp) {
        return (sqlTimestamp == null ? null : sqlTimestamp.toLocalDateTime());
    }
}

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但是,当我在测试中执行它时,我不断收到错误:

org.springframework.jdbc.BadSqlGrammarException:PreparedStatementCallback; 错误的SQL语法[INSERT INTO发票VALUES(？,？,？,？,？)]; 嵌套异常是org.postgresql.util.PSQLException:无法推断用于java.time.LocalDateTime实例的SQL类型.使用带有显式Types值的setObject()来指定要使用的类型.

org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.doTranslate(SQLStateSQLExceptionTranslator.java:99)org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:73)at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate (AbstractFallbackSQLExceptionTranslator.java:81)org.springframework上的org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:649).位于org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:950)的jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:662)位于org.springframework.jdbc.core.namedparam.NamedParameterBatchUpdateUtils.executeBatchUpdateWithNamedParameters(NamedParameterBatchUpdateUtils. java:40)at org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate.batchUpdate(NamedParame)terjdbcTemplate.java:335)在qbs.domain.model.persistance.JdbcInvoiceRepository.bulkSaveInvoices(JdbcInvoiceRepository.java:40)的qbs.domain.model.persistance.JdbcInvoiceRepository $$ FastClassBySpringCGLIB $$ 3c96bc2e.invoke()at org.springframework. cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)atg.springframework.aop.framework.CglibAopProxy $ CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:721)at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.的java:157)在org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)在org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)在org.springframework.aop.framework .cglibAopProxy $ DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:656)位于qbs.QbsApp的qbs.domain.model.persistance.JdbcInvoiceRepository $$ EnhancerBySpringCGLIB $$ 20bcffdd.bulkSaveInvoices()licationTests.fillDB(QbsApplicationTests.java:33)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 43)在org.junit.internal.runners.model的org.junit.runners.model.FrameworkMethod $ 1.runReflectiveCall(FrameworkMethod.java:50)的java.lang.reflect.Method.invoke(Method.java:498)中. ReflectiveCallable.run(ReflectiveCallable.java:12)在org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)在org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)在Org.springframework的org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86) .test.context.junit4.statements.SpringRepea t.evaluate(SpringRepeat.java:84)在org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)在org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252)在组织.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)在org.junit.runners.ParentRunner $ 3.run(ParentRunner.java:290)在org.junit.runners.ParentRunner $ 1.schedule(ParentRunner .java:71)org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)org.junit.runners.ParentRunner.access $ 000(ParentRunner.java:58)org.junit.runners.ParentRunner $ 2.评估(ParentRunner.java:268)org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks. java:70)在org.springframework.test.contex的org.junit.runners.ParentRunner.run(ParentRunner.java:363)t.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)org.junit.runner.JUnitCore.run(JUnitCore.java:137)at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)at com .intellij.rt.execution.junit.IdeaTestRunner $ Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)在com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:237)在com.intellij.rt.execution .unit.JUnitStarter.main(JUnitStarter.java:70)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl .java:43)at java.lang.reflect.Method.invoke(Method.java:498)at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)引起:org.postgresql. util.PSQLException:无法推断用于java.time.LocalDateTime实例的SQL类型.使用带有显式Types值的setObject()来指定要使用的类型.org.postgresql.jdbc.PgPreparedStatement.setObject(PgPreparedStatement.java:1051)org.springframework.jdbc.core.StatementCreatorUtils.setValue(StatementCreatorUtils.java:454)at org.springframework.jdbc.core.StatementCreatorUtils.setParameterValueInternal(StatementCreatorUtils)的.java:238)在org.springframework.jdbc.core.StatementCreatorUtils.setParameterValue(StatementCreatorUtils.java:169)在org.springframework.jdbc.core.BatchUpdateUtils.setStatementParameters(BatchUpdateUtils.java:65)在org.springframework.jdbc. org.springframework.jdbc.core.JdbcTemplate $ 4.doInPreparedStatement中的org.springframework.jdbc.core.namedparam.NamedParameterBatchUpdateUtils $ 1.setValues(NamedParameterBatchUpdateUtils.java:48)中的core.namedparam.NamedParameterBatchUpdateUtils.access $ 000(NamedParameterBatchUpdateUtils.java:32) (jdbcTemplate.java:960)org.springframework.jdbc.core.JdbcTemplate $ 4.doInPreparedStatement(JdbcTemplate.java:950)org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTempla)te.java:633)......还有47个

可能是什么问题以及如何解决这个问题？

清单:pom.xml:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.2.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-rest</artifactId>
    </dependency>
    <dependency>
        <groupId>org.postgresql</groupId>
        <artifactId>postgresql</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jdbc</artifactId>
    </dependency>

    <!--For less boilerplate code-->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <optional>true</optional>
    </dependency>

    <!--JSR 330 for DI in Java - @Inject-->
    <dependency>
        <groupId>javax.inject</groupId>
        <artifactId>javax.inject</artifactId>
        <version>1</version>
    </dependency>

</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>


<repositories>
    <repository>
        <id>spring-releases</id>
        <url>https://repo.spring.io/libs-release</url>
    </repository>
</repositories>
<pluginRepositories>
    <pluginRepository>
        <id>spring-releases</id>
        <url>https://repo.spring.io/libs-release</url>
    </pluginRepository>
</pluginRepositories>

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JdbcInvoiceRepository

@Repository
public class JdbcInvoiceRepository {

    @Inject
    private JdbcTemplate jdbcTemplate;
    @Inject
    private NamedParameterJdbcTemplate namedParameterJdbcTemplate;

    private SimpleJdbcInsert simpleJdbcInsert;

    @PostConstruct
    public void setupSimpleJdbcInsert(){
        simpleJdbcInsert =
                new SimpleJdbcInsert(jdbcTemplate).withTableName("invoices").usingGeneratedKeyColumns("id");
    }

    public int[] bulkSaveInvoices(List<Invoice> invoices){

        String insertSQL = "INSERT INTO invoices VALUES (:id, :exactIssueTime, :finalIssueTime, :issuer, :groupID)";
        SqlParameterSource[] sqlParams = SqlParameterSourceUtils.createBatch(invoices.toArray());

        int[] insertCounts = namedParameterJdbcTemplate.batchUpdate(insertSQL, sqlParams);

        return insertCounts;
    }

    public Long getInvoiceCount() {
        return jdbcTemplate.queryForObject("select count(*) from invoices",
                Long.class);

    }

}

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编辑Invoice.java

@Data
@AllArgsConstructor

@Entity
@Table(name = "invoices")
public class Invoice {

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

    @Column(name = "exact_iss_time")
    private LocalDateTime exactIssueTime;

    @Column(name = "final_iss_time")
    private LocalDateTime finalIssueTime;

    @Column(name = "issuer")
    private String issuer;

    @Column(name = "groupid")
    private Integer groupID;

    protected Invoice() {
    }

}

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发票表定义:

    CREATE TABLE invoices (
  id      SERIAL PRIMARY KEY,
  exact_iss_time TIMESTAMP NOT NULL,
  actual_iss_time TIMESTAMP NOT NULL,
  issuer    TEXT NOT NULL,
  groupid   INTEGER NOT NULL
);

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Answer 1

Pau*_*NUK -2

1) 不要使用 JDBC 尝试批量保存 JPA 实体

2）使用Spring Data JPA代替

3）定义一个Spring数据存储库，如下所示：

public interface InvoiceRepository  extends JpaRepository<Invoice, Long> {}

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4) 在您的存储库上调用 save(Iterable 可迭代方法)，让 JPA 为您处理所有 ORM 任务。

例如invoiceRepository.save(invoices)

我想使用“JDBCTemplate”，因为此代码用于大约 500M 记录的数据生成器，我相信这样使用低级“JDBCtemplate”可能会更有效 (8认同)

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