abap json接口格式转化

最新推荐文章于 2025-10-27 14:10:00 发布

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因外维系统要求，发出格式字段需带双引号，但标准JSON解析封装方法无带引号拼接，需重新复制标准类方法修改使用，还给出了相关数据定义和方法示例。

应外维系统要求发出格式字段带有双引号 而标准json解析封装方法中没有带引号的拼接，故需要重新copy出来标准类方法改改可用
DATA: lo_json_ser TYPE REF TO zcl_trex_json_serializer, “封装json格式”
lo_json_des TYPE REF TO zcl_trex_json_deserializer. “解json格式”
DATA: json_string TYPE string. 在这里插入图片描述

    METHOD recurse.
      DATA:
        l_type  TYPE c,
        l_comps TYPE i,
        l_lines TYPE i,
        l_index TYPE i,
        l_value TYPE string.
      FIELD-SYMBOLS:
        <itab> TYPE ANY TABLE,
        <comp> TYPE any.
    
      DESCRIBE FIELD data TYPE l_type COMPONENTS l_comps .
    
      IF l_type = cl_abap_typedescr=>typekind_table .
    *   itab -> array
        APPEND '[' TO me->fragments .
        ASSIGN data TO <itab> .
        l_lines = lines( <itab> ) .
        LOOP AT <itab> ASSIGNING <comp> .
          ADD 1 TO l_index .
          recurse( <comp> ) .
          IF l_index < l_lines .
            APPEND c_comma TO me->fragments .
          ENDIF .
        ENDLOOP .
        APPEND ']' TO fragments .
      ELSE .
        IF l_comps IS INITIAL .
    *     field -> scalar
    *     todo: format
          l_value = data .
          REPLACE ALL OCCURRENCES OF '\' IN l_value WITH '\\' .
          REPLACE ALL OCCURRENCES OF '''' IN l_value WITH '\''' .
          REPLACE ALL OCCURRENCES OF '"' IN l_value WITH '\"' .
          REPLACE ALL OCCURRENCES OF '&' IN l_value WITH '\&' .
          REPLACE ALL OCCURRENCES OF cl_abap_char_utilities=>cr_lf IN l_value WITH '\r\n' .
          REPLACE ALL OCCURRENCES OF cl_abap_char_utilities=>newline IN l_value WITH '\n' .
          REPLACE ALL OCCURRENCES OF cl_abap_char_utilities=>horizontal_tab IN l_value WITH '\t' .
          REPLACE ALL OCCURRENCES OF cl_abap_char_utilities=>backspace IN l_value WITH '\b' .
          REPLACE ALL OCCURRENCES OF cl_abap_char_utilities=>form_feed IN l_value WITH '\f' .
          CONCATENATE '"' l_value '"' INTO l_value .
          IF l_type = 'P'.
            CONDENSE l_value NO-GAPS.
          ENDIF.
          APPEND l_value TO me->fragments .
        ELSE .
    *     structure -> object
          DATA l_typedescr TYPE REF TO cl_abap_structdescr .
          FIELD-SYMBOLS <abapcomp> TYPE abap_compdescr .
    
          APPEND '{' TO me->fragments .
          l_typedescr ?= cl_abap_typedescr=>describe_by_data( data ) .
          LOOP AT l_typedescr->components ASSIGNING <abapcomp> .
            l_index = sy-tabix .
            CONCATENATE '"' <abapcomp>-name '"' c_colon INTO l_value .   “增加代码”
            TRANSLATE l_value TO LOWER CASE .
            APPEND l_value TO me->fragments .
            ASSIGN COMPONENT <abapcomp>-name OF STRUCTURE data TO <comp> .
            recurse( <comp> ) .
            IF l_index < l_comps .
              APPEND c_comma TO me->fragments .
            ENDIF .
          ENDLOOP .
          APPEND '}' TO me->fragments .
        ENDIF .
      ENDIF .
    ENDMETHOD.

解析json格式转换为内表

在这里插入图片描述
method DESERIALIZE_NODE.
data:
l_len type i ,
l_string type string ,
l_number type string .

  find regex '\{|\[|"([^"]*)"|(\d+)' in section offset offset of json
    match offset offset match length l_len
    submatches l_string l_number .

  if sy-subrc <> 0 .
     exit.
    "raise exception type cx_trex_serialization .
  endif .

  case json+offset(1) .
    when '{' .
      deserialize_object(
        exporting
          json = json
        changing
          offset = offset
          node = node ) .

    when '[' .

***Begin of insert DAB001 20190514
    DATA:offset1 TYPE i.
    DATA:offset2 TYPE i.
    CLEAR:offset1,offset2.
    find regex '\]' in section offset offset of json match offset offset1 .
    if sy-subrc = 0 .
      offset2 = offset1 - offset.
      offset = offset1 + 1.
      IF offset2 > 4.
***End of insert DAB001 20190514

      deserialize_array(
        exporting
          json = json
        changing
          offset = offset
          node = node ) .

***Begin of insert DAB001 20190514
      ENDIF.
    endif .
***End of insert DAB001 20190514

    when '"' .
      node = l_string .
      add l_len to offset .
    when others . "0-9
      node = l_number .
      add l_len to offset .
  endcase .
endmethod.

DATA: lo_json_ser TYPE REF TO zcl_trex_json_serializer,
      lo_json_des TYPE REF TO zcl_trex_json_deserializer.
DATA: json_string TYPE string.

DATA:ls_out                TYPE zscrmorder_out,  “创建与json相对的结构” 封装
        ls_in                 TYPE zscrmorder_out,    “创建与json相对的结构”  解析 
       lt_item               TYPE zscrmorder_out_items,
      ls_item               TYPE zscrmorder_out_item,
      output                TYPE zcommon_webservice_request1,
      input                 TYPE zcommon_webservice_response1
      
  **发出
  CREATE OBJECT lo_json_ser
          EXPORTING
            data = ls_out.
        CALL METHOD lo_json_ser->serialize.
        CALL METHOD lo_json_ser->get_data
          RECEIVING
            rval = json_string.
        "赋值
        CLEAR output.
        output-into_json = json_string.

**解析
CREATE OBJECT lo_json_des.
          CALL METHOD lo_json_des->deserialize
            EXPORTING
              json = input-return
            IMPORTING
              abap = ls_in.
          IF ls_in-type = 'S'.
            lv_msgty = 'S'.
            lv_msgtx = '成功'.
          ELSEIF ls_in-type = 'E'.
            lv_msgty = ls_in-type.
            lv_msgtx = ls_in-msg.
          ENDIF.