JPA之"org.hibernate.MappingExceptception: No Dialect mapping for JDBC type: 1111"问题

问题背景

JPA连接PGSQL，有个表一执行基本CRUD操作就报错

Hibernate: select * from question_topics where state= ? 
? 
sqlTypeDescriptor.getSqlType()-e()->12
12
org.springframework.orm.jpa.JpaSystemExceException: No Dialect mapping for JDBC type: 1111; nested exception is is org.hibernate.MappingExceptception: No Dialect mapping for JDBC type: 1111
    at at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernbernateAccessException(on(HibernateJpaDialect.java:314)
    a)
    at at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceExceptionIfPossible(le(HibernateJpaDialect.java:225)
    a)
    at at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceExceptionIfPossible(le(AbstractEntityManagerFactoryBean.java:527)
    a)
    at at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceExceptionIfPossible(le(ChainedPersistenceExceptionTranslator.java:61)
    a)
    at at org.springframework.dao.support.DataAccessUtils.translateIfNeIfNecessary(ry(DataAccessUtils.java:242)
    a)
    at at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(Per(ke(PersistenceExceptionTranslationInterceptor.java:153)
    a)
    at at org.springframework.aop.framework.ReflectiveMethodInvocation.proceedceed(ed(ReflectiveMethodInvocation.java:185)
    a)
    at at org.springframework.data.jpa.repository.support.CrudMethodMetdMetadataPostProcessor$or$CrudMethodMetadataPopulatingMethodInterceptor.invoke(Cru(ke(CrudMethodMetadataPostProcessor.java:135)
    a)
    at at org.springframework.aop.framework.ReflectiveMethodInvocation.proceedceed(ed(ReflectiveMethodInvocation.java:185)
    a)
    at at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(Exp(ke(ExposeInvocationInterceptor.java:92)
    a)
    at at org.springframework.aop.framework.ReflectiveMethodInvocation.proceedceed(ed(ReflectiveMethodInvocation.java:185)
    a)
    at at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(Sur(ke(SurroundingTransactionDetectorMethodInterceptor.java:61)
    a)
    at at org.springframework.aop.framework.ReflectiveMethodInvocation.proceedceed(ed(ReflectiveMethodInvocation.java:185)
    a)
    at at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(Jdk(ke(JdkDynamicAopProxy.java:212)
    a)
    at at com.sun.proxy.$xy.$Proxy

解决方案

自己手撸一个 PgDialect 来引用，不用默认的的PostgreSQL94Dialect

import org.hibernate.dialect.PostgreSQL94Dialect;
import org.hibernate.type.descriptor.sql.SqlTypeDescriptor;
import org.hibernate.type.descriptor.sql.VarcharTypeDescriptor;

import java.sql.Types;

public class PgDialect extends PostgreSQL94Dialect
{
    @Override
    public SqlTypeDescriptor remapSqlTypeDescriptor(SqlTypeDescriptor sqlTypeDescriptor)
    {
        switch (sqlTypeDescriptor.getSqlType())
        {
        case Types.CLOB:
            return VarcharTypeDescriptor.INSTANCE;
        case Types.BLOB:
            return VarcharTypeDescriptor.INSTANCE;
        case 1111://1111应该是pgsql的json
            return VarcharTypeDescriptor.INSTANCE;
        }
        return super.remapSqlTypeDescriptor(sqlTypeDescriptor);
    }
    public PgDialect() {
        super();
        registerHibernateType(1111, "string");
    }
}

application.yml文件配置如下

spring:
    http:
      encoding:
        force: true
        charset: UTF-8
    application:
        name: tcbj-yytsg-checkcollectsys
    datasource:
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: org.postgresql.Driver
        #driver-class-name: org.microservice.tcbj.yytsg.checkcollectsys.config.PgDriver
        platform: postgresql
        url: jdbc:postgresql://xxxxx:5432/xxxxx?stringtype=unspecified&useUnicode=true&characterEncoding=utf-8&useSSL=false
        username: ******
        password: ******
        initialSize: 5
        minIdle: 5
        maxActive: 20
        maxWait: 60000
        timeBetweenEvictionRunsMillis: 60000
        minEvictableIdleTimeMillis: 300000
        validationQuery: SELECT 1
        testWhileIdle: true
        testOnBorrow: false
        testOnReturn: false
        filters: stat,wall,log4j
        logSlowSql: true
    jpa:
        properties:
            hibernate:
                temp:
                    use_jdbc_metadata_defaults: false
                hbm2ddl:
                    auto: update
        show-sql: true
        naming-strategy: org.hibernate.cfg.ImprovedNamingStrategy
        #核心定义再这里
        database-platform: org.microservice.tcbj.yytsg.checkcollectsys.config.PgDialect