Java，Springboot。 JSON数字类型中的字符串值无法保存Oracle

Question

我正在以JSON格式将数据合并到Oracle数据库中。 但是只有这些家伙无法插入价值。有什么问题？

查询是用XML编写的吗？

控制器

grade_json_path是加载下面JSON文件的变量的名称。

@PostMapping("/grade")
    public ResponseEntity<Void> mergeCommonCodeGrade() {
        ObjectMapper obj = new ObjectMapper();

        InputStream gradeJsonInput = TypeReference.class.getResourceAsStream(GRADE_JSON_PATH);

        try {
            CommonCodeDTO[] commonCodeDTO = obj.readValue(gradeJsonInput, CommonCodeDTO[].class);

            mapper.innoMergeIntoCommonCodeGrade(commonCodeDTO);
        } catch (IOException e) {
            e.getMessage();
        }

        return new ResponseEntity<>(HttpStatus.NO_CONTENT);
    }

grade_json_path

x1 x1存储在DB中，但13和15不是。

[
  {
    "code" : "X1",
    "codeName" : "GOOD"
  },
  {
    "code" : "13",
    "codeName" : "MB5"
  },
  {
    "code" : "15",
    "codeName" : "SAN"
  }
]

xml

<update id="innoMergeIntoCommonCodeGrade" parameterType="java.util.List">
        MERGE INTO inno.B_COMMON_CODE A1
        USING (
        <foreach collection="commonCodeDTO" item="item" index="index" separator="UNION" open="" close="">
            SELECT
            'GRADE' AS MASTER_CODE
            , #{item.code} AS CODE
            , #{item.codeName} AS CODE_NAME
            , 'Y' AS STATUS
            , 'admin' AS REG_ID
            , TO_CHAR(SYSDATE,'YYYYMMDD') AS REG_DATE
            , TO_CHAR(SYSDATE, 'HH24MISS') AS REG_TIME
            , 'admin' AS MOD_ID
            , TO_CHAR(SYSDATE,'YYYYMMDD') AS MOD_DATE
            , TO_CHAR(SYSDATE, 'HH24MISS') AS MOD_TIME
            FROM DUAL
        </foreach>
        ) T1
        ON (A1.CODE = T1.CODE)
        WHEN MATCHED THEN
        UPDATE SET
        A1.CODE_NAME = T1.CODE_NAME,
        A1.MOD_ID = T1.MOD_ID,
        A1.MOD_DATE = T1.MOD_DATE,
        A1.MOD_TIME = T1.MOD_TIME
        WHEN NOT MATCHED THEN
        INSERT (
          A1.MASTER_CODE
        , A1.CODE
        , A1.CODE_NAME
        , A1.STATUS
        , A1.REG_ID
        , A1.REG_DATE
        , A1.REG_TIME
        , A1.MOD_ID
        , A1.MOD_DATE
        , A1.MOD_TIME
        )
        VALUES (
          T1.MASTER_CODE
        , T1.CODE
        , T1.CODE_NAME
        , T1.STATUS
        , T1.REG_ID
        , T1.REG_DATE
        , T1.REG_TIME
        , T1.MOD_ID
        , T1.MOD_DATE
        , T1.MOD_TIME
        )
    </update>