Two-dimensional code generation and processing

1. A computer-implemented method, comprising:

identifying original content to be encoded in a two-dimensional (2D) barcode structure, wherein the 2D barcode structure includes at least an identification field and a data field, the identification field indicating a presence or absence of one or more data elements in the data field, and the identification field including one or more bits as a bitmap field, wherein a particular bit of the one or more bits in the bitmap field having a first value indicates a presence of a corresponding data element of the one or more data elements in the data field, and the particular bit having a second value, different from the first value, indicates an absence of the corresponding data element in the data field;

generating a 2D barcode associated with the original content based on at least the 2D barcode structure and the original content;

scanning the generated 2D barcode;

obtaining a character string represented by the scanned 2D barcode;

parsing the character string based on the 2D barcode structure to obtain one or more data elements that match a current service scenario; and

executing a service in the current service scenario based on the obtained one or more data elements.

2. The computer-implemented method of claim 1 , wherein the identification field indicating one or more data elements in the data field includes at least one of:

the identification field indicating existence of the one or more data elements in the data field;

the identification field indicating corresponding service definitions of the one or more data elements in the data field;

the identification field indicating corresponding locations of the one or more data elements in the data field; and

the identification field indicating a matching relationship between one or more service scenarios and the one or more data elements in the data field.

3. The computer-implemented method of claim 1 , wherein the first value is 1, and the second value is 0.

4. The computer-implemented method of claim 1 , wherein the identification field includes a definition field to define the bitmap field, and the 2D barcode structure further includes at least one of a header field indicating a developer of the 2D barcode structure, a version filed indicating a version of the 2D barcode structure, and a verification field used to perform content verification.

5. The computer-implemented method of claim 1 , wherein each particular data element of the one or more data elements in the data field includes a value and a length of the particular data element.

6. The computer-implemented method of claim 1 , wherein the 2D barcode is a Quick Response (QR) code.

7. A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:

identifying original content to be encoded in a two-dimensional (2D) barcode structure, wherein the 2D barcode structure includes at least an identification field and a data field, the identification field indicating a presence or absence of one or more data elements in the data field, and the identification field including one or more bits as a bitmap field, wherein a particular bit of the one or more bits in the bitmap field having a first value indicates a presence of a corresponding data element of the one or more data elements in the data field, and the particular bit having a second value, different from the first value, indicates an absence of the corresponding data element in the data field;

generating a 2D barcode associated with the original content based on at least the 2D barcode structure and the original content;

scanning the generated 2D barcode;

obtaining a character string represented by the scanned 2D barcode;

parsing the character string based on the 2D barcode structure to obtain one or more data elements that match a current service scenario; and

executing a service in the current service scenario based on the obtained one or more data elements.

8. The non-transitory, computer-readable medium of claim 7 , wherein the identification field indicating one or more data elements in the data field includes at least one of:

the identification field indicating existence of the one or more data elements in the data field;

the identification field indicating corresponding service definitions of the one or more data elements in the data field;

the identification field indicating corresponding locations of the one or more data elements in the data field; and

the identification field indicating a matching relationship between one or more service scenarios and the one or more data elements in the data field.

9. The non-transitory, computer-readable medium of claim 7 , wherein the first value is 1, and the second value is 0.

10. The non-transitory, computer-readable medium of claim 7 , wherein the identification field includes a definition field to define the bitmap field, and the 2D barcode structure further includes at least one of a header field indicating a developer of the 2D barcode structure, a version filed indicating a version of the 2D barcode structure, and a verification field used to perform content verification.

11. The non-transitory, computer-readable medium of claim 7 , wherein each particular data element of the one or more data elements in the data field includes a value and a length of the particular data element.

12. The non-transitory, computer-readable medium of claim 7 , wherein the 2D barcode is a Quick Response (QR) code.

13. A computer-implemented system, comprising:

one or more computers; and

one or more computer memory devices interoperably coupled with the one or more computers and having tangible, non-transitory, machine-readable media storing one or more instructions that, when executed by the one or more computers, perform one or more operations comprising:

identifying original content to be encoded in a two-dimensional (2D) barcode structure, wherein the 2D barcode structure includes at least an identification field and a data field, the identification field indicating a presence or absence of one or more data elements in the data field, and the identification field including one or more bits as a bitmap field, wherein a particular bit of the one or more bits in the bitmap field having a first value indicates a presence of a corresponding data element of the one or more data elements in the data field, and the particular bit having a second value, different from the first value, indicates an absence of the corresponding data element in the data field;

generating a 2D barcode associated with the original content based on at least the 2D barcode structure and the original content;

scanning the generated 2D barcode;

obtaining a character string represented by the scanned 2D barcode;

parsing the character string based on the 2D barcode structure to obtain one or more data elements that match a current service scenario; and

executing a service in the current service scenario based on the obtained one or more data elements.

14. The system of claim 13 , wherein the identification field indicating one or more data elements in the data field includes at least one of:

the identification field indicating existence of the one or more data elements in the data field;

the identification field indicating corresponding service definitions of the one or more data elements in the data field;

the identification field indicating corresponding locations of the one or more data elements in the data field; and

the identification field indicating a matching relationship between one or more service scenarios and the one or more data elements in the data field.

15. The system of claim 13 , wherein the first value is 1, and the second value is 0.