在 PostgreSQL 中使用 JSONB 类型并结合 MyBatis-Plus 实现自动注入，主要有以下几种方案

在 PostgreSQL 中使用 JSONB 类型并结合 MyBatis-Plus 实现自动注入，主要有以下几种方案：

1. 创建 JSONB TypeHandler

@MappedTypes({Map.class, List.class, Object.class})
@MappedJdbcTypes(JdbcType.OTHER)
public class JsonbTypeHandler extends BaseTypeHandler<Object> {
    
    private static final ObjectMapper objectMapper = new ObjectMapper();
    
    @Override
    public void setNonNullParameter(PreparedStatement ps, int i, 
                                    Object parameter, JdbcType jdbcType) 
                                    throws SQLException {
        try {
            String json = objectMapper.writeValueAsString(parameter);
            ps.setObject(i, json, Types.OTHER);
        } catch (JsonProcessingException e) {
            throw new SQLException("JSON转换失败", e);
        }
    }
    
    @Override
    public Object getNullableResult(ResultSet rs, String columnName) 
                                    throws SQLException {
        String json = rs.getString(columnName);
        return parseJson(json);
    }
    
    @Override
    public Object getNullableResult(ResultSet rs, int columnIndex) 
                                    throws SQLException {
        String json = rs.getString(columnIndex);
        return parseJson(json);
    }
    
    @Override
    public Object getNullableResult(CallableStatement cs, int columnIndex) 
                                    throws SQLException {
        String json = cs.getString(columnIndex);
        return parseJson(json);
    }
    
    private Object parseJson(String json) throws SQLException {
        if (StringUtils.isBlank(json)) {
            return null;
        }
        try {
            return objectMapper.readValue(json, Object.class);
        } catch (Exception e) {
            throw new SQLException("JSON解析失败: " + json, e);
        }
    }
}

2. 实体类配置

@Data
@TableName(value = "your_table", autoResultMap = true)
public class YourEntity {
    
    @TableId(type = IdType.AUTO)
    private Long id;
    
    private String name;
    
    // 方式1：使用泛型
    @TableField(typeHandler = JsonbTypeHandler.class)
    private Map<String, Object> attributes;
    
    // 方式2：指定具体类型
    @TableField(typeHandler = JsonbTypeHandler.class)
    private List<String> tags;
    
    // 方式3：自定义对象
    @TableField(typeHandler = JsonbTypeHandler.class)
    private Config config;


    @TableField(typeHandler = JsonbTypeHandler.class)
    private List<Config> configs;

	public void setConfigs(List configs) {

		if(CollUtil.isEmpty(configs)){
			return;
		}

		Object first = configs.getFirst();
		if(first instanceof Map){
			this.configs= JSONUtil.toList(JSONUtil.toJsonStr(configs), Config.class);
		}
	}



}