pgsql数据库表字段设置了jsonb格式；在java的实体里使用String或者对象转换会一直提示一个错误：

Caused by: org.postgresql.util.PSQLException: ERROR: column "xx" is of type jsonb but expression is of type character varying

需要加一个转换方法：

import com.alibaba.fastjson.JSON;
import org.apache.ibatis.type.BaseTypeHandler;
import org.apache.ibatis.type.JdbcType;
import org.apache.ibatis.type.MappedTypes;
import org.postgresql.util.PGobject;

import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

/**
 *  PGJsonTypeHandler:处理Object对象类型与postgresql中JSONB类型之间的转换
 *  author:lipu
 *  created_at:2021/07/29 14:00
 */
@SuppressWarnings("unchecked")
@MappedTypes(value = {Object.class})
public class PGJsonbTypeHandler<T extends Object> extends BaseTypeHandler<T> {

    private static final PGobject pgObject = new PGobject();

    @Override
    public void setNonNullParameter(PreparedStatement preparedStatement, int i, T parameter, JdbcType jdbcType) throws SQLException {
        if (preparedStatement != null) {
            pgObject.setType("jsonb");
            pgObject.setValue(JSON.toJSONString(parameter));
            preparedStatement.setObject(i, pgObject);
        }
    }


    @Override
    public T getNullableResult(ResultSet rs, String columnName) throws SQLException {
        return (T) JSON.parse(rs.getString(columnName));
    }

    @Override
    public T getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
        return (T) JSON.parse(rs.getString(columnIndex));
    }

    @Override
    public T getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
        return (T) JSON.parse(cs.getString(columnIndex));
    }
}

定义实体DO的时候，指定：

@TableField(typeHandler = PGJsonbTypeHandler.class) // 用于 PostgreSQL 的 JSONB 类型

比如：

@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
@ToString(callSuper = true)
@EqualsAndHashCode(callSuper = true)
@TableName(value = "tb1",autoResultMap = true)
@KeySequence("tb1_id_seq")
@Schema(description = "基本表")
public class Table1DO {   

    @TableId
    @Schema(description = "主键")
    private Long id; 

    @TableField(typeHandler = PGJsonbTypeHandler.class) // 用于 PostgreSQL 的 JSONB 类型
    private ShipToAddr shipToAddr;

    @Schema(description = "产品图片地址列表")  // 用于 PostgreSQL 的 JSONB 类型
    @TableField(typeHandler = PGJsonbTypeHandler.class)
    private List<String> productImages;

}

注意：类上的 @TableName里一定要加上autoResultMap = true

@TableName(value = "tb1",autoResultMap = true)