方法一：
// 访问本地html
NSString *htmlFile = [[NSBundle mainBundle] pathForResource:@"home_page" ofType:@"html"];
NSString *htmlString = [NSString stringWithContentsOfFile:htmlFile encoding:NSUTF8StringEncoding error:nil];
// self.webView.scrollView.scrollEnabled = NO;
[self.webView loadHTMLString:htmlString baseURL:[NSURL URLWithString:htmlFile]];
方法二：
// 访问本地html
NSString *htmlFile = [[NSBundle mainBundle] pathForResource:@"home_page" ofType:@"html"];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:htmlFile]];
[self.webView loadRequest:request];
