创建压缩文件，并添加压缩的内容

public static void saveZipFile(){
    try {
        ZipOutputStream zipout = new ZipOutputStream(new FileOutputStream("E:\wangjing.zip"));
        zipout.setEncoding("utf8");
        zipout.putNextEntry(new ZipEntry("aaa/aa.json"));//往压缩包里添加aaa目上录和aaa目录下的aa.json,并将helloworld写入aaa.json
        zipout.write("helloworld".getBytes());
        zipout.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}