SAP ERP 发布REST接口

1.SE24新建类：ZCL_REST_QUERY

激活，然后添加interface:IF_HTTP_EXTENSION并激活。

2.实现IF_HTTP_EXTENSION~HANDLE_REQUEST：

  METHOD IF_HTTP_EXTENSION~HANDLE_REQUEST.
    DATA: LT_FIELDS       TYPE TIHTTPNVP,
          LV_HEADER_QUERY TYPE STRING,
          LV_HTML         TYPE STRING.

    FIELD-SYMBOLS: <FS_FIELD>       LIKE LINE OF LT_FIELDS.

*" get HEADER fields
    SERVER->REQUEST->GET_HEADER_FIELDS(
        CHANGING
          FIELDS = LT_FIELDS    " Header fields
      ).

    " Read the fields table and look for name "~query_string" -- this will contain the URL query
    READ TABLE LT_FIELDS
      WITH KEY NAME = '~query_string'
      ASSIGNING <FS_FIELD>.
    IF SY-SUBRC EQ 0.
      CONCATENATE '{"message": "You have entered'
                  <FS_FIELD>-VALUE
                  'as query parameter."}'
             INTO LV_HTML SEPARATED BY SPACE.

*" Output to HTML
      SERVER->RESPONSE->SET_CDATA(
        EXPORTING
          DATA   = LV_HTML    " Character data
*        offset = 0    " Offset into character data
*        length = -1    " Length of character data
      ).
    ENDIF.
  ENDMETHOD.

3.事务代码SICF定义REST服务：

设置服务的用户名密码：

添加处理类：

保存激活.测试服务：