ABAP HTTP中传输中文问题 完美解决办法

方式一：将参数放入head 

  "HTTP
  str_in = '张三'.
"在abap中调用url时，先要对url中的汉字转码ASCII

  CALL METHOD cl_http_utility=>escape_url
        EXPORTING
          unescaped = str_in
        RECEIVING
          escaped   = str_out.


  CONCATENATE '/getUserName?name=' str_out INTO LV_PARAM.


  call method cl_http_client=>create
    exporting
      host          = 'wthrcdn.etouch.cn'
      service       = '80'
      scheme        = '1'                        "http
      proxy_host    = wf_proxy
      proxy_service = wf_port
    importing
      client        = http_client.

  HTTP_CLIENT->PROPERTYTYPE_LOGON_POPUP = HTTP_CLIENT->CO_ENABLED .

  CALL METHOD HTTP_CLIENT->REQUEST->SET_HEADER_FIELD
    EXPORTING
      NAME  = '~request_method'
      VALUE = 'GET'.

  CALL METHOD HTTP_CLIENT->REQUEST->SET_HEADER_FIELD
    EXPORTING
      NAME  = '~server_protocol'
      VALUE = 'HTTP/1.1'.
  "host后的url
  call method http_client->request->set_header_field
    exporting
      name  = '~request_uri'
      value = LV_PARAM.

  CALL METHOD HTTP_CLIENT->REQUEST->SET_HEADER_FIELD
    EXPORTING
      NAME  = 'Content-Type'
      VALUE = 'application/json'.
  CALL METHOD HTTP_CLIENT->SEND
    EXCEPTIONS
      HTTP_COMMUNICATION_FAILURE = 1
      HTTP_INVALID_STATE         = 2.
  CALL METHOD HTTP_CLIENT->RECEIVE
    EXCEPTIONS
      HTTP_COMMUNICATION_FAILURE = 1
      HTTP_INVALID_STATE         = 2
      HTTP_PROCESSING_FAILED     = 3.

* 获取返回的数据
  RETURN_STR = HTTP_CLIENT->RESPONSE->GET_CDATA( ).
  if RETURN_STR is INITIAL.
    write: /'用cl_http_client=>create方法：' ,/ 'faild'.
  else.
    write: /'用cl_http_client=>create方法：' ,/ RETURN_STR.
  endif.
  CALL METHOD HTTP_CLIENT->CLOSE.

方式二：将参数放入url 

  CONCATENATE 'http://wthrcdn.etouch.cn/weather_mini'
              '?'
              'city=' str_out INTO LV_URL.

"URL填全部，带参数
  CALL METHOD CL_HTTP_CLIENT=>CREATE_BY_URL
    EXPORTING
      URL    = LV_URL
    IMPORTING
      CLIENT = HTTP_CLIENT.

  HTTP_CLIENT->PROPERTYTYPE_LOGON_POPUP = HTTP_CLIENT->CO_ENABLED .

  CALL METHOD HTTP_CLIENT->REQUEST->SET_HEADER_FIELD
    EXPORTING
      NAME  = '~request_method'
      VALUE = 'GET'.

  CALL METHOD HTTP_CLIENT->REQUEST->SET_HEADER_FIELD
    EXPORTING
      NAME  = '~server_protocol'
      VALUE = 'HTTP/1.1'.

  CALL METHOD HTTP_CLIENT->REQUEST->SET_HEADER_FIELD
    EXPORTING
      NAME  = 'Content-Type'
      VALUE = 'application/json'. " text/html 看情况填

*  "set body
*  CALL METHOD HTTP_CLIENT->REQUEST->SET_CDATA
*    EXPORTING
*      DATA   = LV_PARAM
*      OFFSET = 0
*      LENGTH = LV_LEN.

  CALL METHOD HTTP_CLIENT->SEND
    EXCEPTIONS
      HTTP_COMMUNICATION_FAILURE = 1
      HTTP_INVALID_STATE         = 2.
  CALL METHOD HTTP_CLIENT->RECEIVE
    EXCEPTIONS
      HTTP_COMMUNICATION_FAILURE = 1
      HTTP_INVALID_STATE         = 2
      HTTP_PROCESSING_FAILED     = 3.

* 获取返回的数据
  RETURN_STR = HTTP_CLIENT->RESPONSE->GET_CDATA( ).
  if RETURN_STR is INITIAL.
    write: /'用CL_HTTP_CLIENT=>CREATE_BY_URL方法：' ,/ 'faild'.
  else.
    write: /'用CL_HTTP_CLIENT=>CREATE_BY_URL方法：' ,/ RETURN_STR.
  endif.
  CALL METHOD HTTP_CLIENT->CLOSE.