改写这段话：系统结构可分为src的java源代码database文件夹为系统的数据库文件webroot为系统的界面代码文件。Src文件夹里面包含control包、dao包、util包

The system architecture can be divided into three folders: "src" for the Java source code, "database" for the system's database files, and "webroot" for the system's interface code files. The "src" folder contains the "control," "dao," and "util" packages.