CN102404356A - Long-distance function call transmission adapter and data reading method thereof - Google Patents

Abstract

A remote function call transmission adapter and a method for reading data thereof, comprising: reading the original payload payload input by the SAP system to the RFC transmission adapter; parsing the read original payload to obtain the FTP path and text file name of the data , use the parsed FTP path and text file name to connect to the FTP server and read the text file in the FTP server; convert the read text file into an XML format file; convert the converted XML format file and the original payload The content of is used as a new payload to replace the original payload and provided to the PI server. The invention can make the transmission adapter dynamically read the text document.

Description

Remote function call transport adapter and its methods for reading data

technical field

The invention relates to a remote function call transmission adapter and a method for reading data.

Background technique

At present, enterprises have their own application systems, such as factory finished product management system, raw material management system, procurement system, bonded bonded warehouse system, etc. When transferring data from SAP to various application systems within the enterprise, it is Send the same data to multiple application systems or application system groups. This process is an RFC Outbound process. RFC (remote function call) is a SAP interface protocol, which greatly simplifies the programming work of communication between systems, allowing to call and execute a remote system, or a predefined function on the same system. Among them, in the RFC Outbound process, it is required to dynamically enter the location of the data when executing the RFC, which refers to the FTP (file transfer protocol, file transfer protocol) path, and then execute the RFC, which is automatically read according to the location of the data Get the data and send it to the process integration (PI, process integration) server, that is, input the FTP path as a parameter into the standard RFC Sender Adapter (RFC transfer adapter) in the PI server, but the standard RFC adapter in the PI server can only Receive RFC input parameters (including input and output parameters and tables), convert them into XML (extensible markup language, extensible markup language) files, but cannot pass the input parameters (actually FTP address, port, user name, Password, file name, etc.), to dynamically read FTP files.

Contents of the invention

In view of the above, it is necessary to provide a remote function call transmission adapter and a method for reading data, so that the remote function call transmission adapter can dynamically read FTP files.

A remote function call transmission adapter is located in the process integration PI server, and the PI server is respectively connected to the SAP system and the target system in communication, and the SAP system stores the data transmitted to the target system on the FTP server in a text file format. The remote call transmission adapter includes: a reading module, used to read the original payload payload input by the SAP system to the remote function call transmission adapter, the content of the original payload is composed of parameters of data to be transmitted to the target system, the parameters Including the FTP address, port, user name, password and file name where the data is stored; the parsing module is used to parse the read original payload to obtain the FTP path and text file name of the data transmitted to the target system; the calling module is used to It is used to connect to the FTP server by using the FTP path obtained by parsing, and read the text file in the FTP server according to the text file name obtained by parsing; the calling module is also used to convert the read text file into Extensible Markup Language A file in XML format; a processing module, configured to use the transformed file in XML format and the parameters input to the remote function call transfer adapter as a new payload to replace the original payload, so as to provide it to the PI server.

A method for reading data by a remote function call transmission adapter, which is applied to a process integration PI server, and the PI server is respectively connected to a SAP system and a target system for communication, and the SAP system transmits data to the target system in a text file TXT The format is stored on an FTP server. The method comprises the steps of: a. reading the original payload payload that the SAP system inputs to the remote function call transmission adapter, the content of the original payload is composed of parameters of data to be transmitted to the target system, and the parameters include an FTP address for storing the data , port, user name, password and file name; b. parse the read original payload to obtain the FTP path and text file name of the data transmitted to the target system; c. use the parsed FTP path to connect to the FTP server; d. read the text file in the FTP server according to the text file name obtained by parsing; e. convert the read text file into a file in Extensible Markup Language XML format; f. convert the converted XML format file and input The remote function call passes the parameters of the adapter as a new payload, replacing the original payload, to be provided to the PI server.

Compared with the prior art, the remote function call transmission adapter and the method for reading data thereof allow the remote function call transmission adapter to pass input parameters (actually FTP address, port, user name, password, file name, etc.) ), to read text files on the FTP server, and enhance the function of the transmission adapter.

Description of drawings

FIG. 1 is an architecture diagram of a preferred embodiment of the remote function call transmission adapter of the present invention.

Fig. 2 is a functional block diagram of a preferred embodiment of the remote function call transmission adapter system of the present invention.

FIG. 3 is a flow chart of a preferred embodiment of the method for reading data by the remote function call transmission adapter of the present invention.

Description of main component symbols

SAP system 1 Report program 10 RFC interface 11 PI server 2 RFC Transport Adapter twenty one function library twenty two target system 3 FTP server 4 call module 210 read module 212 Analysis module 214 processing module 216

Detailed ways

As shown in FIG. 1 , it is a structural diagram of a preferred embodiment of the RFC transmission adapter of the present invention. The remote function call sender adapter (remote function call sender adapter, RFCSender Adapter) 21 (hereinafter referred to as "RFC sender adapter 21") runs in the PI (process integration, process integration) server 2. The PI server is the middleware between the SAP (systems applications and products in data processing) system 1 and the target system 3. The data in the SAP system 1 can be transmitted to the target system 3 through the PI server 2, and the PI server 2 can be integrated with the product (software) in the SAP system 1, and can also be integrated with the target system 3 (between PI server 2 and SAP system 1 products (software) in external third-party systems) are interconnected. The target system 3 includes multiple application systems within the enterprise, for example, a factory product management system, a raw material management system, a bonded warehouse system, and the like.

Described SAP system 1 has included Report program 10 and RFC (remote function call, remote function call) interface 11. Described SAP system 1 reads the parameter of the data that will be transmitted to the target system 3 that the user inputs by Report program 10, and the parameter of this data actually comprises the FTP address of data, port, user name, password and file name etc., and Data corresponding to the above parameters to be transmitted to the target system 3 is read. The SAP system 1 stores the read data in the format of a text file (TXT) on the FTP server 4 according to the parameters of the data (eg FTP address, etc.). The RFC interface 11 is a communication interface between the PI server 2 and the SAP system 1 . The SAP system 1 invokes the RFC interface 11 to input the parameters of the data transmitted to the target system 3 to the RFC transmission adapter 21 in the PI server 2 . The RFC transmission adapter 21 reads the parameters of the input data into the PI server 2 for subsequent integration process. In the present invention, the SAP system 1 invokes the RFC interface 11 to be transmitted to the parameter of the data of the target system 3 as the original Payload (payload), and the format of the original payload is XML (extensible markup language, extensible markup language) format. The content in the original payload is composed of parameters input to the RFC transmission adapter 21 .

The RFC transmission adapter 21 includes a function library 22 . Multiple classes are stored in the function library 22, including classes for implementing interfaces, classes for converting TXT to XML, and FTP tool classes. The class implementing the interface is used to provide an interface so that each module in the RFC transmission adapter 21 can communicate with the RFC transmission adapter 21 to realize the function that the RFC transmission adapter 21 can dynamically read the text document on the FTP server 4 . The TXT-to-XML class is used to convert a file in TXT format into a file in XML format. Described FTP tool class is used for connecting FTP server 4, and reads the content in the text file in FTP server 4 with UTF8 coding mode (a kind of storage and transmission format).

As shown in FIG. 2 , it is a structure diagram of a preferred embodiment of the transmission adapter of the present invention. The RFC transmission adapter 21 further includes a calling module 210 , a reading module 212 , a parsing module 214 and a processing module 216 .

The calling module 210 is used to call the class implementing the interface in the function library 22, and provides an interface so that each module in the RFC transmission adapter 21 can communicate with the RFC transmission adapter 21, so that the RFC transmission adapter 21 can dynamically read the FTP function of the file.

The reading module 212 is used to read the original payload in XML format input by the SAP system 1 to the RFC transmission adapter 21 , and the content of the original payload is composed of parameters input to the RFC transmission adapter 21 . The original parameters include parameters such as the FTP address, port, user name, password, and file name where the data is stored.

The parsing module 214 is used to parse the read original payload in XML format to obtain the FTP path and text file name of the data to be transmitted to the target system 3 .

The calling module 210 is also used to call the FTP tool class in the function library 22 to connect to the FTP server 4 using the FTP path obtained by parsing, and read the text file in the FTP server 4 according to the text file name obtained by parsing.

The calling module 210 is also used to call the TXT-to-XML class from the function library 22 to convert the read text file into a file in XML format.

The processing module 216 is used to use the converted file in XML format and the parameters input into the RFC transmission adapter 21 (ie, the content in the original payload) as a new payload to replace the original payload, so as to provide the PI server 2 to continue the follow-up Integrate processes.

It should be noted that, in other embodiments, the above-mentioned modules and function libraries can also be plugged into the RFC transmission adapter 21 to realize dynamic reading of text documents on the FTP server 4 .

As shown in FIG. 3 , it is a flow chart of a preferred embodiment of the method for reading data by the remote function call transmission adapter of the present invention.

Step S10, the calling module 210 calls the class implementing the interface in the function library 22, and provides the interface so that each module in the RFC transmission adapter 21 can communicate with the RFC transmission adapter 21, so that the RFC transmission adapter 21 can dynamically read Function to fetch text documents on FTP server 4.

Step S11 , the reading module 212 reads the original payload in XML format input by the SAP system 1 to the RFC transmission adapter 21 , and the content of the original payload is composed of parameters input to the RFC transmission adapter 21 . The original parameters include parameters such as the FTP address, port, user name, password, and file name where the data is stored.

Step S12, the parsing module 214 parses the read original payload in XML format to obtain the FTP path and text file name of the data to be transmitted to the target system 3 .

Step S13, the calling module 210 calls the FTP tool class from the function library 22, and connects to the FTP server 4 using the FTP path obtained through analysis.

Step S14, according to the name of the text file obtained through parsing, the calling module 210 reads the text file TXT in the FTP server 4 .

Step S15, the calling module 210 calls the convert TXT to XML class from the function library 22, and converts the read text file into a file in XML format.

Step S16, the processing module 216 uses the converted XML format file and the parameters input to the RFC transfer adapter 21 (ie, the content in the original payload) as a new payload to replace the original payload, so as to provide the PI server 2 to continue the follow-up integration process.

The above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced All should not deviate from the spirit and scope of the technical solution of the present invention.

Claims (10)

1. the method for a remote function calls transmission adapter reading of data; Being applied to flow process integrates in the PI server; This PI server is connected with SAP system and goal systems communication respectively; The data that described SAP system will send goal systems to leave on the ftp server with text TXT form, it is characterized in that the method comprising the steps of:

A. read the original payload payload of SAP system input remote function calls transmission adapter; The content of said original payload is made up of the parameter of the data that will be sent to goal systems, and this parameter comprises FTP address, port, user name, password and the file name of store data;

B. resolve the original payload read, with the FTP path and the text title of the data that obtain being sent to goal systems;

C. the FTP path that utilizes parsing to obtain is connected to ftp server;

D. the text title that obtains according to parsing reads the text in the ftp server;

E. the text that is read is converted into the file of expandable mark language XML form;

The parameter of the file of the XML form after f. will transforming and input remote function calls transmission adapter is replaced original payload, to offer the PI server as new payload.

2. the method for remote function calls transmission adapter reading of data as claimed in claim 1; It is characterized in that; This remote function calls transmission adapter comprises function library, and described function library comprises that the class, the TXT that realize interface are converted into XML class and FTP instrument class.

3. the method for remote function calls transmission adapter reading of data as claimed in claim 2 is characterized in that, also comprises step before the step a:

The class of the realization interface in the call function storehouse is to realize that this remote function calls transmission adapter dynamically reads the text document in the ftp server.

4. the method for remote function calls transmission adapter reading of data as claimed in claim 2 is characterized in that, between step b and step c, also comprises step:

Call FTP instrument class, said FTP instrument class is used to connect ftp server, and reads the content of ftp server Chinese version file with the UTF8 coded system.

5. the method for remote function calls transmission adapter reading of data as claimed in claim 2 is characterized in that, between steps d and step e, also comprises step:

Call TXT and be converted into the XML class, said TXT is converted into the file that the XML class is used for the file of TXT form is converted into the XML form.

6. remote function calls transmission adapter; Be arranged in flow process and integrate the PI server; This PI server is connected with SAP system and goal systems communication respectively; The data that described SAP system will send goal systems to leave on the ftp server with text file format, it is characterized in that this far call transmission adapter comprises:

Read module; Be used to read the original payload payload that the SAP system inputs to the remote function calls transmission adapter; The content of said original payload is made up of the parameter of the data that will be sent to goal systems, and this parameter comprises FTP address, port, user name, password and the file name of store data;

Parsing module is used to resolve the original payload that is read, with the FTP path and the text title of the data that obtain being sent to goal systems;

Calling module, the FTP path that is used to utilize parsing to obtain is connected to ftp server, and reads the text in the ftp server according to the text title that parsing obtains;

Said calling module also is used for the text that is read is converted into the file of expandable mark language XML form;

Processing module is used for parameter with the file of the XML form after transforming and input remote function calls transmission adapter as new payload, replaces original payload, to offer the PI server.

7. remote function calls transmission adapter as claimed in claim 6 is characterized in that, this remote function calls transmission adapter comprises function library, and described function library comprises that the class, the TXT that realize interface are converted into XML class and FTP instrument class.

8. remote function calls transmission adapter as claimed in claim 7; It is characterized in that, described calling module also be used for the call function storehouse the realization interface the class to provide interface that each module in the remote function calls transmission adapter can be intercomed with this remote function calls transmission adapter mutually.

9. remote function calls transmission adapter as claimed in claim 7; It is characterized in that; Described calling module also is used to call FTP instrument class, and said FTP instrument class is used to connect ftp server, and reads the content of ftp server Chinese version file with the UTF8 coded system.

10. remote function calls transmission adapter as claimed in claim 7 is characterized in that, described calling module also is used to call TXT and is converted into the XML class, and said TXT is converted into the file that the XML class is used for the file of TXT form is converted into the XML form.

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