java dwg文件的读取,写入开发包.读取dwg使用当前库非常方便，测试代码和jar都有-java dwg file to read, write, development kits. read dwg current library is very convenient to use, test code and jar have

AutoLisp/Vlisp 获取网络时间 格林威治时间 注：此代码仅仅在AutoCAD中测试正常运行。(AutoLisp/Vlisp gets network time Greenwich time Note: this code is only tested in AutoCAD for normal operation.)

openDwg测试代码ReadDWG，有很大的参考意义(openDwg test code ReadDWG,that may helpful for you)