解决WKWebView不显示H5中引用的Library本地图片问题

    if ([self.contentWebView isKindOfClass:[WKWebView class]]) {
        self.webSever = [[GCDWebServer alloc] init];
        [self.webSever addGETHandlerForBasePath:@"/" directoryPath:NSHomeDirectory() indexFilename:nil cacheAge:3600 allowRangeRequests:YES];
        [self.webSever startWithPort:80 bonjourName:nil];
    }

    if ([self.contentWebView isKindOfClass:[WKWebView class]]) {
        //通过循环，替换掉所有Library路径
        NSString *Library = [NSHomeDirectory() stringByAppendingPathComponent:@"Library"];
        while ([displayHtmlbody containsString:Library]) {
            displayHtmlbody = [displayHtmlbody stringByReplacingOccurrencesOfString:Library withString:@"/Library"];//把library滤镜换成Library字符串，再拼接本地服务器地址。
            displayHtmlbody = [displayHtmlbody stringByReplacingOccurrencesOfString:@"file://localhost" withString:@"http://localhost"];
        }
    }

- (void)dealloc {
    //停止本地服务
    if ([self.contentWebView isKindOfClass:[WKWebView class]]) {
        [self.webSever stop];
        self.webSever = nil;
    }
}