SAP调用Restful Api接口接收数据

佚名 6年前 (2019-04-19) 随笔 2824人围观抢沙发百度已收录

因为准备要做一个关于调用外部接口的需求，所以自己先练习一下。

程序说明：我已经在.net开发的系统里提供一个api接口，现在在sap访问这个接口，来接收数据。

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这里涉及Restful Api知识，以后再分享。

这是一个api地址：http://10.X.X.X:8081/api/test/gettest

首先根据这个url创建一个http客户端

call method cl_http_client=>create_by_url
    exporting
      url                = url
    importing
      client             = http_client
    exceptions
      argument_not_found = 1
      plugin_not_active  = 2
      internal_error     = 3
      others             = 4.

选择一个HTTP GET METHOD

http_client->request->set_method( if_http_request=>co_request_method_get ).

发送和接收数据

 "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.

最后就可以获取接收的数据了

  "获取接口返回的数据
  result = http_client->response->get_cdata( ).

  write: result.

输出结果是这样的

跟外部系统返回的数据是一致的。

附上完整代码

data: len         type        i,"发送报文长度
      len_string  type        string,
      url         type        string, "接口地址
      http_client type ref to if_http_client,"http客户端
      post_string type        string,
      result      type        string.

data: it_header type tihttpnvp.



start-of-selection.

  url = 'http://10.X.X.X:8081/api/test/gettest'.


  "创建http客户端
  call method cl_http_client=>create_by_url
    exporting
      url                = url
    importing
      client             = http_client
    exceptions
      argument_not_found = 1
      plugin_not_active  = 2
      internal_error     = 3
      others             = 4.

  "设置http method 为Get
  http_client->request->set_method( if_http_request=>co_request_method_get ).

  "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.

  "获取接口返回的数据
  result = http_client->response->get_cdata( ).

  write: result.

以后会继续分享用POST方法发送数据到外部接口的例子。