Swift4应用程序在加载本地HTML时崩溃[重复]

您需要从文件中加载字符串内容,使用contentsOfFile方法获取字符串,并使用webview的loadHTMLString方法,打印错误或创建一些显示错误的枚举

enum WebError: Swift.Error {
    case fileNotFound(name: String)
    case parsing(contentsOfFile: String)
}

guard let url = Bundle.main.path(forResource: "index_prod", ofType: "html") else {
   throw WebError.fileNotFound(name: file) // throw file not found error 
}

do {
      let html = try String(contentsOfFile: url)
      self.webView.loadHTMLString(html, baseURL: Bundle.main.bundleURL)
} catch {
      throw WebError.parsingError(contentsOfFile: file) 
}