在WebView的WebViewClient中覆盖shouldInterceptRequest方法，以在请求URL时设置正确的缓存模式。以下是示例代码：

@Override
public WebResourceResponse shouldInterceptRequest(WebView view, String url) {
    WebResourceRequest request = new WebResourceRequest(url, true);
    String reqUrl = request.getUrl().toString();
    boolean isForMainFrame = request.isForMainFrame();
    boolean isRedirect = request.isRedirect();
    boolean hasGesture = request.hasGesture();
    String method = request.getMethod();
 
    //设置WebView的缓存模式
    if (!TextUtils.isEmpty(reqUrl)) {
        CacheControl cacheControl = new CacheControl.Builder()
                .noCache()
                .build();
        Request newRequest = new Request.Builder()
                .cacheControl(cacheControl)
                .url(reqUrl)
                .build();
        return super.shouldInterceptRequest(view, newRequest);
    } else {
        return super.shouldInterceptRequest(view, url);
    }
}