关于java:Hello-world

        String s1 = "000000a180010001000000104578656375746553746174656d656e74000000020c00010c00010c00010b0001000000107a73851b133c483498ae8072e6b4082b0b00020000001097dff83dbe914fd08a35ea8aec55d50e00000b00020000002b73656c656374202a2066726f6d207878787874657374207768657265206e616d65203d2027666c696e6b270d00030b0b00000000020004010a000500000000000000000000";
        byte[] bytes = ByteBufUtil.decodeHexDump(s1);
        ByteBuf byteBuf = Unpooled.wrappedBuffer(bytes);