如何在Rust中检索不同类型的DNS记录？

[dependencies]
trust-dns-resolver = "0.20.0"

use trust_dns_resolver::Resolver;
use trust_dns_resolver::config::{ResolverConfig, ResolverOpts};
use trust_dns_resolver::error::ResolveResult;

fn main() {
    // 创建一个默认的DNS解析器
    let resolver = Resolver::new(ResolverConfig::default(), ResolverOpts::default()).unwrap();
    
    // 指定要查询的域名和记录类型
    let name = "example.com.";
    let record_type = trust_dns_resolver::proto::rr::record_type::RecordType::A;
    
    // 执行DNS查询
    let response: ResolveResult<Vec<trust_dns_resolver::proto::rr::record_data::RData>> = resolver.lookup(name, record_type);
    
    // 处理查询结果
    match response {
        Ok(records) => {
            for record in records.iter() {
                println!("Found record: {:?}", record);
            }
        },
        Err(e) => {
            println!("Error: {:?}", e);
        }
    }
}