An error in the Red Cross management system in the Web big job

Project Description: The background database is queried or updated according to the user's actions on the front page.

Error description: After multiple operations on the webpage, the page will error: "The database exceeds the maximum number of connections."

Error Analysis: Each time a webpage is opened, a Java code Connection database is run to facilitate the subsequent operation of the data. After multiple operations on a Web page, the database is connected multiple times. This error occurs because the source code does not involve closing the database.

Error Correction: Add a method to close the database in the project's database management class and call this method to close the database connection each time the Web page is closed.

Other Related: Software test first job--He Yang

An error in the Red Cross management system in the Web big job