[绍棠] WKWebView post传参问题

1.定义一个宏

#define POST_JS @"function my_post(path, params) {\

var method = \"POST\";\

var form = document.createElement(\"form\");\

form.setAttribute(\"method\", method);\

form.setAttribute(\"action\", path);\

for(var key in params){\

if (params.hasOwnProperty(key)) {\

var hiddenFild = document.createElement(\"input\");\

hiddenFild.setAttribute(\"type\", \"hidden\");\

hiddenFild.setAttribute(\"name\", key);\

hiddenFild.setAttribute(\"value\", params[key]);\

}\

form.appendChild(hiddenFild);\

}\

document.body.appendChild(form);\

form.submit();\

}"

2.参数

NSDictionary *dataDic = @{@"username":@"shaotang"};

把参数转为JSON字符串

NSData *data = [NSJSONSerialization dataWithJSONObject:dataDic options:NSJSONWritingPrettyPrinted error:nil];

NSString *postData = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

3.最后

_webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 0, ScreenWidth,ScreenHeight)];

NSString *_url = @"http://";

NSString * js = [NSString stringWithFormat:@"%@my_post(\"%@\", %@)",POST_JS, _url, postData];

// 执行JS代码

[_webView evaluateJavaScript:js completionHandler:^(id object, NSError * _Nullable error) {

}];

[self addSubview:_webView];