14.02 Retrieve metadata information of a website

Prerequisites

• Products: Liquid UI WS, Liquid UI Server or Local DLL, Client Software
• Commands: wsCurl, textbox(), pushbutton()
• File: wscurl.dll

Purpose

You will learn how to execute a simple URL and retrieve metadata information using wsCurl. To demonstrate this, we’ll walk you through the following steps:

• Delete unnecessary elements on the SAP screen using the del command
• Add a pushbutton to execute the process on click
• Add a text field
• Add a text box to display the retrieved metadata
• Add a function to retrieve the metadata of the given website

User Interface

Create the file SAPLSMTR_NAVIGATION.E0100.sjs inside your script folder for customizing the SAP Easy Access screen.
//Now, let's start adding the script to the above file and save it.

Customization

1. Logon to SAP, and delete the image container on it using the del command, as shown below:
    

   // Deletes an image container on the SAP Easy Access screen.
   del("X[IMAGE_CONTAINER]");
   

   
    
2. Add a pushbutton with the label WWW.GUIXT.COM to execute the process simple_http that retrieves the metadata information using wsCurl on click.
    

   pushbutton([1,0], 'WWW.GUIXT.COM', '?',{"size":[1,15], "process":simple_http});
   text([3,1], "http Details below - ");
   textbox([4,1], [24, 100],{"name":"z_text"});

    
   
    
3. Add a text field with the label http Details below, as shown in the image below.
    

   // Creates a text field with the label http Details below 
   text([3,1], "http Details below - ");
   
   

    
   
    
4. Add a text field with the label http Details below, as shown in the image below.
    

   // Creates a text box to display the output, as shown in the image below
   textbox([4,1], [24, 100],{"name":"z_text"});
   
   

    
   
    
5. Add the wscurl file using the load command in this script to use WS services to translate the text entered in the input field.
    

   // includes a file in this script file 
   load('wscurl');

    
6. Now, add the following Liquid UI script to the above file and save it.
    

   // Function to execute a simple URL and retrieve information
   function simple_http() {    
       var wsCurl = new Curl();
           
       /* Build the URL to make a call*/
       var completeURL = "http://www.guixt.com/";
   
       /* Note this use is for calls made to www.guixt.com which returns us the JSON object in string*/
       wsCurl.setopt(Curl.CURLOPT_URL, completeURL);
       
       /* You can check the return code to avoid error data string which can be found from "wsCurl.error" 
        * return value 0 means success*/
       var response = wsCurl.exec();
       var error = wsCurl.error;
       
       z_tmp = response.substring(0,2000);
       copytext({"fromstring":"z_tmp", "totext":"z_text"});
       
       /* Close the http connection for the URL fetch*/
       wsCurl.close();
       
       /* Remove any reference for Garbage Collection*/
       wsCurl= NULL;
   }
   
   

   
   SAP Process

   1. Refresh the SAP screen and click on the WWW.GUIXT.COM pushbutton. Then, the function simple_http is executed and the metadata of the given website will be displayed in the text box created, as shown in the image below.