如何在子命令后通过structopt crate使用CLI参数？

[dependencies]
structopt = "0.3"
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0"

use structopt::StructOpt;

#[derive(Debug, StructOpt)]
#[structopt(name = "mycli", about = "A CLI tool")]
struct Cli {
    #[structopt(short, long)]
    name: String,
    
    #[structopt(subcommand)]
    subcommand: Option<Subcommand>,
}

#[derive(Debug, StructOpt)]
enum Subcommand {
    #[structopt(name = "command1", about = "Subcommand 1")]
    Command1 {
        #[structopt(short, long)]
        option1: String,
        
        // add more options as needed
    },
    
    #[structopt(name = "command2", about = "Subcommand 2")]
    Command2 {
        #[structopt(short, long)]
        option2: String,
        
        // add more options as needed
    },
    
    // add more subcommands as needed
}

fn main() {
    let args = Cli::from_args();
    
    match args.subcommand {
        Some(Subcommand::Command1 { option1 }) => {
            // handle command1 with option1
            println!("Running command1 with option1: {}", option1);
        },
        Some(Subcommand::Command2 { option2 }) => {
            // handle command2 with option2
            println!("Running command2 with option2: {}", option2);
        },
        None => {
            // handle main command without subcommand
            println!("Running main command");
        },
    }
}

$ cargo build
$ cargo run -- command1 --option1=value1