Eclipse：如何在批处理文件中自动导出未签名的应用程序

I am developing a game for Android in Windows Vista environment. I want to automate the exporting unsigned application operation in a batch file. So, I wouldn't have to Right click on the project, go to Android Tools and then select Export Unsigned Application Package... anytime I want to run my project. Thank you.I am developing a game for Android in Windows V