如何删除url Java中的参数

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import java.util.LinkedHashMap;
import java.util.Map;

public class RemoveParamRequestWrapper extends HttpServletRequestWrapper {
    private final Map<String, String> params = new LinkedHashMap<>();

    public RemoveParamRequestWrapper(HttpServletRequest request) {
        super(request);
        // 将请求参数复制到LinkedHashMap中
        request.getParameterMap().forEach((key, value) -> {
            if (!"paramToRemove".equals(key)) { // 假设我们要移除名为"paramToRemove"的参数
                params.put(key, value[0]);
            }
        });
    }

    @Override
    public String getParameter(String name) {
        return params.get(name);
    }

    @Override
    public Map<String, String[]> getParameterMap() {
        return new java.util.HashMap<>(params);
    }

    @Override
    public Enumeration<String> getParameterNames() {
        return Collections.enumeration(params.keySet());
    }

    @Override
    public String[] getParameterValues(String name) {
        return params.get(name) != null ? new String[]{params.get(name)} : null;
    }
}

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    HttpServletRequestWrapper requestWrapper = new RemoveParamRequestWrapper(request);
    // 现在requestWrapper中不包含名为"paramToRemove"的参数
    // 继续处理请求...
}

import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.LinkedHashMap;
import java.util.Map;

public class URLUtils {
    public static String removeParameter(String url, String parameterToRemove) throws URISyntaxException {
        URI uri = new URI(url);
        String scheme = uri.getScheme();
        String host = uri.getHost();
        String path = uri.getPath();
        String query = uri.getQuery();

        Map<String, String> queryParams = new LinkedHashMap<>();
        if (query != null) {
            for (String param : query.split("&")) {
                String[] entry = param.split("=");
                if (!entry[0].equals(parameterToRemove)) {
                    queryParams.put(entry[0], entry.length > 1 ? entry[1] : "");
                }
            }
        }

        StringBuilder sb = new StringBuilder();
        sb.append(scheme).append("://").append(host).append(path);
        if (!queryParams.isEmpty()) {
            sb.append("?").append(String.join("&", queryParams.entrySet().stream()
                    .map(entry -> entry.getKey() + "=" + entry.getValue())
                    .toArray(String[]::new)));
        }

        return sb.toString();
    }
}

public static void main(String[] args) {
    try {
        String url = "http://example.com/path?param1=value1&paramToRemove=valueToRemove&param2=value2";
        String newUrl = URLUtils.removeParameter(url, "paramToRemove");
        System.out.println(newUrl); // 输出: http://example.com/path?param1=value1&param2=value2
    } catch (URISyntaxException e) {
        e.printStackTrace();
    }
}