WKWebView loads local PDF

Without further ado, go directly to the code

#import <WebKit/WebKit.h>

 self.webview = [[WKWebView alloc] initWithFrame:CGRectMake(0, 0, 414, 300)];
    NSURL *pdfUrl = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"name" ofType:@"pdf"]];
    //    NSURL *pdfUrl = [NSURL URLWithString:@"http://www.taobao.com"];
    NSURLRequest *request = [NSURLRequest requestWithURL:pdfUrl];
    [self.view addSubview:self.webview];
    //设置缩放
    [self.webview loadRequest:request];