src/org/nutz/lang/Streams.java
public static OutputStream fileOut(File file) {
        try {
            return buff(new FileOutputStream(file));
        }
        catch (FileNotFoundException e) {
            throw Lang.wrapThrow(e);
        }
    }
public static OutputStream fileOut(File file) {
        try {
            return buff(new FileOutputStream(file));
        }
        catch (FileNotFoundException e) {
            throw Lang.wrapThrow(e);
        }
    }
根据一个文件建立一个输出流

@param file
文件
@return 输出流