使用休眠将持久性jsonb字段转换为h2

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如何解决使用休眠将持久性jsonb字段转换为h2

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我想使用jsonb列类型。当我使用postgresql时没有问题。但是，当我使用H2时，我无法保留我的实体。本机sql有效，但是保存EntityManager.persist时出现以下错误

ERROR: Data conversion error converting "X'aced000574000f7b226b6579223a2276616c7565227d' (json_entities: ""attributes"" ""JSONB"")"; SQL statement:
insert into json_entities (attributes,id) values (?,?) [22018-200]
javax.persistence.RollbackException: Error while committing the transaction
    at org.hibernate.internal.ExceptionConverterImpl.convertCommitException(ExceptionConverterImpl.java:81)
    at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:104)
    at H2Test.jsonFieldTest(H2Test.java:39)
    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 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
    at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
    at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
    at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
    at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
    at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
    at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220)
    at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53)
Caused by: javax.persistence.PersistenceException: org.hibernate.exception.DataException: could not execute statement
    at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154)
    at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181)
    at org.hibernate.internal.ExceptionConverterImpl.convertCommitException(ExceptionConverterImpl.java:65)
    ... 29 more
Caused by: org.hibernate.exception.DataException: could not execute statement
    at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:52)
    at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42)
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113)
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99)
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:200)
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3254)
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3779)
    at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:107)
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604)
    at org.hibernate.engine.spi.ActionQueue.lambda$executeActions$1(ActionQueue.java:478)
    at java.util.LinkedHashMap.forEach(LinkedHashMap.java:684)
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:475)
    at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:348)
    at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40)
    at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:102)
    at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1360)
    at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:451)
    at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3210)
    at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2378)
    at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:447)
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183)
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40)
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281)
    at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101)
    ... 28 more
Caused by: org.h2.jdbc.JdbcSQLDataException: Data conversion error converting "X'aced000574000f7b226b6579223a2276616c7565227d' (json_entities: ""attributes"" ""JSONB"")"; SQL statement:
insert into json_entities (attributes,?) [22018-200]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:457)
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:429)
    at org.h2.message.DbException.get(DbException.java:194)
    at org.h2.table.Column.getDataConversionError(Column.java:409)
    at org.h2.table.Column.validateConvertUpdateSequence(Column.java:381)
    at org.h2.table.Table.validateConvertUpdateSequence(Table.java:845)
    at org.h2.command.dml.Insert.insertRows(Insert.java:187)
    at org.h2.command.dml.Insert.update(Insert.java:151)
    at org.h2.command.CommandContainer.update(CommandContainer.java:198)
    at org.h2.command.Command.executeUpdate(Command.java:251)
    at org.h2.jdbc.JdbcPreparedStatement.executeUpdateInternal(JdbcPreparedStatement.java:191)
    at org.h2.jdbc.JdbcPreparedStatement.executeUpdate(JdbcPreparedStatement.java:152)
    at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeUpdate(ProxyPreparedStatement.java:61)
    at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeUpdate(HikariProxyPreparedStatement.java)
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:197)
    ... 47 more
Caused by: org.h2.message.DbException: Data conversion error converting "OTHER to JSON" [22018-200]
    at org.h2.message.DbException.get(DbException.java:205)
    at org.h2.message.DbException.get(DbException.java:181)
    at org.h2.value.Value.getDataConversionError(Value.java:1504)
    at org.h2.value.Value.convertToJson(Value.java:1439)
    at org.h2.value.Value.convertTo(Value.java:861)
    at org.h2.value.Value.convertTo(Value.java:772)
    at org.h2.value.TypeInfo.cast(TypeInfo.java:515)
    at org.h2.table.Column.validateConvertUpdateSequence(Column.java:378)
    ... 57 more
Caused by: org.h2.jdbc.JdbcSQLDataException: Data conversion error converting "OTHER to JSON" [22018-200]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:457)
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:429)
    ... 65 more

这是我的简单项目。

自定义jsonb的休眠类型 

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.hibernate.HibernateException;
import org.hibernate.engine.spi.SharedSessionContractImplementor;
import org.hibernate.usertype.UserType;

import java.io.Serializable;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;

/**
 * Created by sanco on 29/09/2020.
 * h2jsontest
 */
public class PGJsonType implements UserType {
    private final int CUSTOM_TYPE = Types.OTHER;
    private final static ObjectMapper jsonMapper = new ObjectMapper();


    @Override
    public int[] sqlTypes() {
        return new int[]{CUSTOM_TYPE};
    }

    @Override
    public Class returnedClass() {
        return JsonNode.class;
    }

    @Override
    public boolean equals(Object x,Object y) throws HibernateException {
        return x==null? y==null : ((JsonNode)x).equals((JsonNode)y);
    }

    @Override
    public int hashCode(Object x) throws HibernateException {
        return ((JsonNode)x).hashCode();
    }

    @Override
    public Object nullSafeGet(ResultSet rs,String[] names,SharedSessionContractImplementor session,Object owner) throws HibernateException,SQLException {
        final String cellContent = rs.getString(names[0]);
        if (cellContent == null) {
            return null;
        }
        try {
            return jsonMapper.readTree(cellContent);
        } catch (final Exception ex) {
            throw new RuntimeException("Failed to convert jsonb to JsonNode: " + ex.getMessage(),ex);
        }
    }

    @Override
    public void nullSafeSet(PreparedStatement st,Object value,int index,SharedSessionContractImplementor session) throws HibernateException,SQLException {
        if (value == null) {
            st.setNull(index,CUSTOM_TYPE);
            return;
        }
        try {
            st.setObject(index,jsonMapper.writeValueAsString(value),CUSTOM_TYPE);
        } catch (final Exception ex) {
            throw new RuntimeException("Failed to convert JsonNode to jsonb: " + ex.getMessage(),ex);
        }
    }

    @Override
    public Object deepCopy(Object value) throws HibernateException {
        return value==null? null : ((JsonNode)value).deepCopy();
    }

    @Override
    public boolean isMutable() {
        return true;
    }

    @Override
    public Serializable disassemble(Object value) throws HibernateException {
        return (Serializable) value;
    }

    @Override
    public Object assemble(Serializable cached,Object owner) throws HibernateException {
        return cached;
    }

    @Override
    public Object replace(Object original,Object target,Object owner) throws HibernateException {
        return original;
    }
}

我的实体类 

import com.fasterxml.jackson.databind.JsonNode;
import org.hibernate.annotations.Type;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;

/**
 * Created by sanco on 29/09/2020.
 * h2jsontest
 */
@Entity
@Table(name="json_entities")
public class JsonEntity {
    @Id
    private Long id;

    @Type(type = "PGJsonType")
    @Column(columnDefinition = "jsonb")
    private JsonNode attributes;

    public void setId(Long id) {
        this.id = id;
    }

    public Long getId() {
        return id;
    }

    public JsonNode getAttributes() {
        return attributes;
    }

    public void setAttributes(JsonNode attributes) {
        this.attributes = attributes;
    }
}

持久性单元 

<persistence xmlns="http://java.sun.com/xml/ns/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">

    <persistence-unit name="postgre">
        <description>
            Hibernate using JPA
        </description>

        <class>JsonEntity</class>
        <properties>
            <property name="hibernate.connection.url" value="jdbc:postgresql://localhost:5432/postgres"/>
            <property name="hibernate.connection.driver_class" value="org.postgresql.Driver"/>
            <property name="hibernate.connection.username" value="postgres"/>
            <property name="hibernate.connection.password" value="s2351910"/>
            <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQL10Dialect"/>
            <property name="hibernate.temp.use_jdbc_metadata_defaults"
                      value="false"/>
            <property name="hibernate.show_sql" value="true"/>
            <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
            <property name="hibernate.enable_lazy_load_no_trans" value="true"/>
            <property name="hibernate.connection.provider_class"
                      value="org.hibernate.hikaricp.internal.HikariCPConnectionProvider"/>
            <property name="hibernate.hikari.minimumIdle" value="5"/>
            <property name="hibernate.hikari.maximumPoolSize" value="20"/>
            <property name="hibernate.hikari.idleTimeout" value="45000"/>

        </properties>

    </persistence-unit>

    <persistence-unit name="h2">
        <description>
            Hibernate using JPA
        </description>

        <class>JsonEntity</class>
        <properties>
            <property name="hibernate.connection.url" value="jdbc:h2:mem:organization;MODE=PostgreSQL;IGNORECASE=TRUE;DATABASE_TO_LOWER=TRUE;AUTO_RECONNECT=TRUE;INIT=CREATE DOMAIN IF NOT EXISTS jsonb AS other\;CREATE TYPE if not exists &quot;JSONB&quot; AS json;"/>
            <property name="hibernate.connection.driver_class" value="org.h2.Driver"/>
            <property name="hibernate.connection.username" value="sa"/>
            <property name="hibernate.connection.password" value=""/>
            <property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect"/>
            <property name="hibernate.temp.use_jdbc_metadata_defaults"
                      value="false"/>
            <property name="hibernate.show_sql" value="true"/>
            <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
            <property name="hibernate.enable_lazy_load_no_trans" value="true"/>
            <property name="hibernate.connection.provider_class"
                      value="org.hibernate.hikaricp.internal.HikariCPConnectionProvider"/>
            <property name="hibernate.hikari.minimumIdle" value="5"/>
            <property name="hibernate.hikari.maximumPoolSize" value="20"/>
            <property name="hibernate.hikari.idleTimeout" value="60000"/>

        </properties>

    </persistence-unit>

</persistence>

测试课程 H2 

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

/**
 * Created by sanco on 29/09/2020.
 * h2jsontest
 */
public class H2Test {
    private static EntityManagerFactory factory;
    private static ObjectMapper mapper;

    @BeforeClass
    public static void init(){
        factory = Persistence.createEntityManagerFactory("h2");
        mapper = new ObjectMapper();
    }

    @Test
    public void jsonFieldTest(){
        EntityManager em = factory.createEntityManager();

        JsonEntity je = new JsonEntity();
        je.setId(1L);

        ObjectNode on = mapper.createObjectNode();
        on.put("key","value");
        je.setAttributes(on);

        try {
            em.getTransaction().begin();
            em.persist(je);
            em.getTransaction().commit();

            
        }catch (Exception e){
            e.printStackTrace();
            em.getTransaction().rollback();
        }

assert（em.createQuery（“从JsonEntity j中选择j.id”，Long.class）.getSingleResult（））== 1L; } 

    @AfterClass
    public static void cleanResource(){
        if(factory!=null)
            factory.close();
    }
}

PostgreSQL 

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

/**
 * Created by sanco on 29/09/2020.
 * h2jsontest
 */
public class PostgreSQLTest {
    private static EntityManagerFactory factory;
    private static ObjectMapper mapper;

    @BeforeClass
    public static void init(){
        factory = Persistence.createEntityManagerFactory("postgre");
        mapper = new ObjectMapper();
    }

    @Test
    public void jsonFieldTest(){
        EntityManager em = factory.createEntityManager();

        JsonEntity je = new JsonEntity();
        je.setId(1L);

        ObjectNode on = mapper.createObjectNode();
        on.put("key","value");
        je.setAttributes(on);

        try {
            em.getTransaction().begin();
            em.persist(je);
            em.getTransaction().commit();

            
        }catch (Exception e){
            e.printStackTrace();
            em.getTransaction().rollback();
        }

assert（em.createQuery（“从JsonEntity j中选择j.id”，Long.class）.getSingleResult（））== 1L; } 

    @AfterClass
    public static void cleanResource(){
        if(factory!=null)
            factory.close();
    }
}

我阅读了很多表格，但建议的解决方案对我不起作用。我还调试了H2源代码，并发现ValueJson.convertToJson抛出异常，因为值类型在切换时无法处理。查看org.h2.value.Value.java

的源代码 
private ValueJson convertToJson() {
        switch (getValueType()) {
        case BOOLEAN:
            return ValueJson.get(getBoolean());
        case BYTE:
        case SHORT:
        case INT:
            return ValueJson.get(getInt());
        case LONG:
            return ValueJson.get(getLong());
        case FLOAT:
        case DOUBLE:
        case DECIMAL:
            return ValueJson.get(getBigDecimal());
        case BYTES:
        case BLOB:
            return ValueJson.fromJson(getBytesNoCopy());
        case STRING:
        case STRING_IGNORECASE:
        case STRING_FIXED:
        case CLOB:
            return ValueJson.get(getString());
        case GEOMETRY: {
            ValueGeometry vg = (ValueGeometry) this;
            return ValueJson.getInternal(GeoJsonUtils.ewkbToGeoJson(vg.getBytesNoCopy(),vg.getDimensionSystem()));
        }
        default:
            throw getDataConversionError(Value.JSON);
        }
    }

getValueType返回19，表示JAVA_OBJECT。我该如何解决这个问题？

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