(The code implements the web paging function Input parameters: query table title, current page number, maximum number of records displayed per page, and the output parameter of paging column step size is Map set, which respectively correspond to: total number of records, total number of pages, index of paging column step size, start page number, end page number, previous page number, next page number, current page number This code does not include data query function (auxiliary data query type is provided), It is required to call relevant auxiliary classes to obtain the database query results. This code also does not include business control (the spring framework is required to provide business control), and the business is received by the spring architecture. Finally, a simple implementation of MD5 is included. If there is something that can't be solved, please come to our Love Open Source to have a look. There must be materials or software, tutorials, patches, source code, etc. you need)