spring获取域名

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;

@RestController
public class DomainController {

    @GetMapping("/getDomain")
    public String getDomain(HttpServletRequest request) {
        String url = request.getRequestURL().toString();
        String domain = url.split("/")[2]; // 假设URL格式正确，且至少有三个部分（协议、域名、路径）
        return "Current domain is: " + domain;
    }
}

String url = request.getRequestURL().toString();
String domain = "";
if (url != null && url.matches("^https?://[^/]+.*$")) {
    domain = url.split("/")[2];
} else {
    // 处理URL格式不正确的情况
}

String protocol = request.getScheme();
String domain = url.split("/")[2];
if ("https".equals(protocol)) {
    // 处理HTTPS请求
} else if ("http".equals(protocol)) {
    // 处理HTTP请求
}

import java.net.URI;
import java.net.URISyntaxException;

String url = request.getRequestURL().toString();
URI uri;
try {
    uri = new URI(url);
    String domain = uri.getHost();
    // 进一步处理域名，如转换为ASCII形式
} catch (URISyntaxException e) {
    // 处理URI解析异常
}