Pbfunc external function Extension application-GET, post operations for HTTP in PowerBuilder

When using the Pbfunc extension function for HTTP operation, the following functions of n_pbfunc_http need to be set for the parameters:

Of_set_url (...) // to make a GET or post URL, you must of_set_contenttype (...). )// set content-type, optional of_post (...), Of_get (...) // Select the post operation or get operation as needed if UTF-8 encoding conversion is required, use the Of_str2utf8 function in the N_pbfunc_encode object

The following http://www.webxml.com.cn/WebServices/IpAddressSearchWebService.asmx?op= Getcountrycitybyip this to get the IP location of the webservice to explain get and post operations

• Get operation

Enter Http://www.webxml.com.cn/WebServices/IpAddressSearchWebService.asmx?op=getCountryCityByIp in the browser, after the page is loaded, In the page's HTTP GET inside see:

Get/webservices/ipaddresssearchwebservice.asmx/getcountrycitybyip?theipaddress=string HTTP/1.1Host: www.webxml.com.cn

That's the message we need to call.
We just need to attach the host to the get corresponding/webservices/.... Before, and at the top of the Add http://, the calling code reads

1 n_pbfunc_http lnv_http2Lnv_http.of_clear ()//Empty Parameters3 4 N_pbfunc_encode Lnv_encode5Lnv_http.of_set_url ("http://www.webxml.com.cn/WebServices/IpAddressSearchWebService.asmx/getCountryCityByIp?theIpAddress= 136.213.185.177")6 7 Blob Lblb_data8 stringLs_error9 IF lnv_http.of_get (lblb_data,ls_error) ThenTen     stringGbkdata OneGbkdata = LNV_ENCODE.OF_UTF8TOGBK (lblb_data)//since the return is UTF-8 encoding, the direct display of Chinese will be garbled AMessageBox ("Http Get Return", Gbkdata) - Else -MessageBox ("Tips","Execution failed") theEnd IF

Return after successful invocation

<?XML version= "1.0" encoding= "Utf-8"?><arrayofstringXmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"xmlns:xsd= "Http://www.w3.org/2001/XMLSchema"xmlns= "http://WebXml.com.cn/">  <string>136.213.185.177</string>  <string>United States</string></arrayofstring>

• Post operation

In the same way, you can see it in the HTTP post on the page:

Post/webservices/ipaddresssearchwebservice.asmx/getcountrycitybyip Http/1.1host:www.webxml.com.cncontent-type: Application/x-www-form-urlencodedcontent-length:lengththeipaddress=string

Content-length, this parameter is ignored, attaching host to post corresponding/webservices/.... Before, and at the top of the Add http://, call Of_set_contenttype to set the parameter value of the Content-type,of_add_form setting theipaddress, the calling code is as follows.

1 n_pbfunc_http lnv_http2Lnv_http.of_clear ()//Empty Parameters3Lnv_http.of_set_url ("http://www.webxml.com.cn/WebServices/IpAddressSearchWebService.asmx/getCountryCityByIp")4Lnv_http.of_set_contenttype ("application/x-www-form-urlencoded")5 6 N_pbfunc_encode Lnv_encode7 blob UTF88Utf8= Lnv_encode.of_str2utf8 ("136.213.185.177")9Lnv_http.of_add_form ("theipaddress", UTF8)Ten  One Blob Lblb_data A stringLs_error - IF lnv_http.of_post (lblb_data,ls_error) Then -      the     stringGbkdata -Gbkdata = LNV_ENCODE.OF_UTF8TOGBK (lblb_data)//since the return is UTF-8 encoding, the direct display of Chinese will be garbled -MessageBox ("Tips", Gbkdata) - Else +MessageBox ("Tips","Execution failed") -End IF

The result returned after a successful call is the same as get, which can also be used for SOAP operations, which are interested in self-experimentation (refer to the Ws_* button code in w_http download demo)
Demo code for Post, refer to W_http form

Pbfunc external function Extension application-GET, post operations for HTTP in PowerBuilder