ABAP解析返回的JSON 案例

DATA:LTOKEN TYPE STRING.
  DATA: LL_LINES(10),"行数
        LL_TABIX(10),"循环标号
        LL_PECNT     TYPE P LENGTH 6 DECIMALS 2, "百分比
        LL_PECET(6),"百分数
        LL_TEXT(40)."消息
  CLEAR: LL_LINES,LL_TABIX,LL_PECNT,LL_PECET,LL_TEXT.

*  CALL FUNCTION 'ZWMS_XHY_GET_TOKEN'
*    IMPORTING
*      LV_RESULT = LTOKEN.
  DATA: LEN            TYPE        I, "发送报文长度
        LEN_STRING     TYPE        STRING,
        URL            TYPE        STRING, "接口地址
        LV_URL         TYPE AGR_URL,
        LV_URL_STR     TYPE STRING,
        HTTP_CLIENT    TYPE REF TO IF_HTTP_CLIENT, "http客户端
        LV_SERVER_NAME TYPE ZE_SERVER_NAME,
        POST_STRING    TYPE        STRING,
        RESULT         TYPE        STRING,
        LTIMEEND       TYPE STRING, "时间戳结束
        LTIMEST        TYPE STRING. "时间戳开始
  LV_URL_STR = 'your URL '.

  CALL METHOD CL_HTTP_CLIENT=>CREATE_BY_URL
    EXPORTING
      URL                = LV_URL_STR
    IMPORTING
      CLIENT             = HTTP_CLIENT
    EXCEPTIONS
      ARGUMENT_NOT_FOUND = 1
      PLUGIN_NOT_ACTIVE  = 2
      INTERNAL_ERROR     = 3
      OTHERS             = 4.
  "设定传输请求内容格式以及编码格式
  HTTP_CLIENT->REQUEST->SET_CONTENT_TYPE( CONTENT_TYPE = 'application/json; charset=utf-8' ).

  "设置http method 为Get
  HTTP_CLIENT->REQUEST->SET_METHOD( IF_HTTP_REQUEST=>CO_REQUEST_METHOD_POST ).

  DATA:LVJSON TYPE STRING.
  DATA:L_UUID32 TYPE SYSUUID_C32,
       ILOGS    LIKE ZRFCLOGS OCCURS 0 WITH HEADER LINE.

  DATA:ITEM TYPE I. "行项目
  ITEM = 0.
  LVJSON = '{"SQL":"SELECT top 20 MATNR from ZVMARC "}'. //your  json  参数
  LEN = STRLEN( LVJSON ).
  ILOGS-CALPARMI =  LVJSON.
  CALL METHOD HTTP_CLIENT->REQUEST->SET_HEADER_FIELD
    EXPORTING
      NAME  = '~request_method'
      VALUE = 'POST'.
  "设置传入字符串
  CALL METHOD HTTP_CLIENT->REQUEST->SET_CDATA
    EXPORTING
      DATA   = LVJSON
      OFFSET = 0
      LENGTH = LEN.
  "发送
  CALL METHOD HTTP_CLIENT->SEND
    EXCEPTIONS
      HTTP_COMMUNICATION_FAILURE = 1
      HTTP_INVALID_STATE         = 2
      HTTP_PROCESSING_FAILED     = 3
      HTTP_INVALID_TIMEOUT       = 4
      OTHERS                     = 5.

  "接收
  CALL METHOD HTTP_CLIENT->RECEIVE
    EXCEPTIONS
      HTTP_COMMUNICATION_FAILURE = 1
      HTTP_INVALID_STATE         = 2
      HTTP_PROCESSING_FAILED     = 3.
  "提取返回字符串
  RESULT = HTTP_CLIENT->RESPONSE->GET_CDATA( ).
  DATA LS_CHAR TYPE C.
  LS_CHAR = CL_ABAP_CHAR_UTILITIES=>CR_LF.  " 获取换行符

  DATA: L_JSON_ROOT_OBJECT TYPE REF TO ZCL_MDP_JSON_NODE.
  DATA: L_ERRORTYPE_OBJECT TYPE REF TO ZCL_MDP_JSON_NODE.
  DATA: L_SAP_TEST_OBJECT TYPE REF TO ZCL_MDP_JSON_NODE.
  DATA: L_ERRORNO_OBJECT TYPE REF TO ZCL_MDP_JSON_NODE.
  DATA: L_SAP_TEST_ROW1_OBJECT TYPE REF TO ZCL_MDP_JSON_NODE.
  DATA: L_SAP_TEST_FUNC_ID_OBJECT TYPE REF TO ZCL_MDP_JSON_NODE.
  DATA: LTAR TYPE TABLE OF ZCL_MDP_JSON_NODE=>TYP_ARRAY_CHILDREN.

  L_JSON_ROOT_OBJECT = ZCL_MDP_JSON_NODE=>DESERIALIZE( JSON = RESULT ).
  DATA: L_STRING TYPE STRING.
  L_ERRORTYPE_OBJECT = L_JSON_ROOT_OBJECT->OBJECT_GET_CHILD_NODE( KEY = 'RESULT').
  LTAR  = L_ERRORTYPE_OBJECT->ARRAY_CHILDREN().
  LOOP AT LTAR INTO DATA(LSAR).
    L_SAP_TEST_OBJECT = LSAR-NODE.
    L_SAP_TEST_FUNC_ID_OBJECT  =  L_SAP_TEST_OBJECT->OBJECT_GET_CHILD_NODE( KEY = 'MATNR' ).
    WRITE :/ L_SAP_TEST_FUNC_ID_OBJECT->VALUE.
  ENDLOOP.
  WRITE:/ '123'.