1.加载的html实际高度与展示出的高度不符（使用UIWebView时正常）
在头中加入
<head>
<meta name="viewport" content="width=device-width,user-scalable=no, initial-scale=1">
</head>
2.参数太长使用POST加载网页时失败
使用下方代码请求失败
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlStr] cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:20];
[request setHTTPMethod:@"POST"];
[request setHTTPBody:[body dataUsingEncoding:NSUTF8StringEncoding]];
暂未找到原因，替代方案为加载一段含有js请求的html，在加载完成后调用post方法
<html>
<head>
<meta charset="utf-8" />
<title></title>
</head>
<script type="text/javascript">
function post(path,json){
var method = "post";
var form = document.createElement("form");
form.setAttribute("method", method);
form.setAttribute("action", path);
var hiddenField = document.createElement("input");
hiddenField.setAttribute("type", "hidden");
hiddenField.setAttribute("name", "json");
hiddenField.setAttribute("value", json);
form.appendChild(hiddenField);
document.body.appendChild(form);
form.submit();
}
</script>
</html>
3.使用URLRequest在请求头中加入cookie值无效
WKWebView不会再从NSHTTPCookieStorage取cookie，而是需要在初始化时通过WKUserScript写入
WKUserContentController* userContentController = WKUserContentController.new;
NSString *scriptStr = [NSString stringWithFormat:@"document.cookie = 'JSESSIONID=%@'",[IMClient shareClient].sessionId];
WKUserScript * cookieScript = [[WKUserScript alloc]
initWithSource:scriptStr
injectionTime:WKUserScriptInjectionTimeAtDocumentStart forMainFrameOnly:NO];
[userContentController addUserScript:cookieScript];
WKWebViewConfiguration* webViewConfig = WKWebViewConfiguration.new;
webViewConfig.userContentController = userContentController;
[webViewConfig.userContentController addScriptMessageHandler:self name:@"nativeInteraction"];
WKWebView *webView = [[WKWebView alloc]initWithFrame:self.view.bounds configuration:webViewConfig];
webView.scrollView.bounces = false;
webView.navigationDelegate = self;
[self.view addSubview:webView];
_webView = webView;
4.加载本地html时，css与图片无效
通常css及图片引用如下
<link href="css/login.css" rel="stylesheet" type="text/css" />
background: url("../images/dc-bg.png") no-repeat;
去掉文件夹路径， 更改为下方格式即可
<link href="login.css" rel="stylesheet" type="text/css" />
background: url("dc-bg.png") no-repeat;