The Software Automatically Upgrade Method

Any Develop-Group can develop a perfect software, sometimes the software even has many bug. We may find some problems every now and then when we use the Software. These problems may be caused by the software-itself and may be caused by the change of the software or hardware environment of the computer. So the Software-Update has become general when we use computer. To the user, the update of software can mend the bug and insure the safety of the data in the computer, can increase and update the function of the software, so the user may use it handy. To extend the market and strengthen the competition, the software-develop company also must update the software constantly. Software update belongs to software maintenance phase, can't be absent.At present, the book and article that introduce the software-update completely is still lacking. This paper introduced the usual methods of software-update, and analyzed the principle, then put forward a convenientsoftware-update mode--Software auto-update system, we realized theprototype of Software auto-update system. Though the modes of software update that we usually see are various, the principle is the same. The principle is replacing the old function modules with the new function modules, in order to convenient for the update, we should compartmentalize the function modules in the software-design phase so that every module has strong cohesion and feeble coupling. The software auto-update system is based on Internet, the software company replace the old function modules with the new function modules when the software need to update, then the software company inform the users the information that the software has been renewed by the Email of users', and introduce the new functions and the condition of update. The user decide whether update the software. During the process of update, user download the update files to the hard disk via internet first, then replace the corresponding old-version files, user only need to do step by stepaccording to the guider. the software auto-update system insured the user update the software timely and correctly. This paper introduced the main parts of the prototype, such as define of data structure, the arithmetic of Web files download, main function modules and main interfaces when the system running.