图片.png
贴上代码：
#import "MJWebVC.h"
//Libs
#import <WebKit/WebKit.h>
@interface MJWebVC ()<WKNavigationDelegate, WKUIDelegate>
@property(nonatomic, strong) WKWebView *webView;
@property(nonatomic, strong) UIProgressView *progress;
@end
@implementation MJWebVC
- (void)viewDidLoad {
[super viewDidLoad];
NSString *url = [NSString stringWithFormat:@"%@?accessToken=%@", self.urlStr, kRT];
[self loadRequestWithUrlString:url];
//TODO:kvo监听，获得页面title和加载进度值
[self.webView addObserver:self forKeyPath:@"estimatedProgress" options:NSKeyValueObservingOptionNew context:NULL];
[self.webView addObserver:self forKeyPath:@"title" options:NSKeyValueObservingOptionNew context:NULL];
[self.view addSubview:self.webView];
[self.view addSubview:self.progress];
}
- (void)loadRequestWithUrlString:(NSString *)urlString {
// 在此处获取返回的cookie
NSMutableDictionary *cookieDic = [NSMutableDictionary dictionary];
NSMutableString *cookieValue = [NSMutableString stringWithFormat:@""];
NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for (NSHTTPCookie *cookie in [cookieJar cookies]) {
[cookieDic setObject:cookie.value forKey:cookie.name];
}
// cookie重复，先放到字典进行去重，再进行拼接
for (NSString *key in cookieDic) {
NSString *appendString = [NSString stringWithFormat:@"%@=%@;", key, [cookieDic valueForKey:key]];
[cookieValue appendString:appendString];
}
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString]];
[request addValue:cookieValue forHTTPHeaderField:@"Cookie"];
[self.webView loadRequest:request];
}
#pragma mark - *************** 监听
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
//加载进度值
if ([keyPath isEqualToString:@"estimatedProgress"]) {
if (object == self.webView) {
[self.progress setAlpha:1.0f];
[self.progress setProgress:self.webView.estimatedProgress animated:YES];
if(self.webView.estimatedProgress >= 1.0f) {
[UIView animateWithDuration:0.5f delay:0.3f options:UIViewAnimationOptionCurveEaseOut animations:^{
[self.progress setAlpha:0.0f];
} completion:^(BOOL finished) {
[self.progress setProgress:0.0f animated:NO];
}];
}
} else {
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}
} else if ([keyPath isEqualToString:@"title"]) {//网页title
if (object == self.webView) {
self.navigationItem.title = self.webView.title;
} else {
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}
} else {
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}
}
#pragma mark - *************** 销毁的时候，一定要移除监听
- (void)dealloc {
[self.webView removeObserver:self forKeyPath:@"estimatedProgress"];
[self.webView removeObserver:self forKeyPath:@"title"];
}
#pragma mark - *************** WKNavigationDelegate代理
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation {
}
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation {
}
// 页面开始加载时调用
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation {
}
// 当内容开始返回时调用
- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation {
}
- (void)webView:(WKWebView *)webView didFailNavigation:(WKNavigation *)navigation withError:(NSError *)error {
}
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error {
}
#pragma mark - *************** lazy load
- (WKWebView *)webView {
if (!_webView) {
_webView = [[WKWebView alloc] initWithFrame:self.view.bounds];
_webView.navigationDelegate = self;
_webView.UIDelegate = self;
}
return _webView;
}
- (UIProgressView *)progress {
if (!_progress) {
_progress = [[UIProgressView alloc]initWithFrame:CGRectMake(0, 64, MJScreenWidth, 2)];
_progress.tintColor = [UIColor blueColor];
_progress.backgroundColor = [UIColor lightGrayColor];
}
return _progress;
}
@end
另外附上其他需要cookie请求的代码：
AFNetworking：
// 获取AFHTTPRequestOperationManager
AFHTTPRequestOperationManager *operationManager = [AFHTTPRequestOperationManager manager];
// 创建可变字典用于存放Cookie
NSMutableDictionary *cookieDic = [NSMutableDictionary dictionary];
// 存放新添加的cookie
#warning 单个的Cookie还好，但是楼主在工厂类方法中拼接了一个包含6个设备信息的value值，最后忘记加分号了，测试也没测出来
#warning 因为不影响功能，但是后面的cookie就自动拼接上了，H5那边也识别不到，险造成重大事故(涉及金融。。)，望后来者看到，提前做好准备(就凭这个坑，你得给我个赞)
NSMutableString *cookieValue = [NSMutableString stringWithFormat:@"fromapp=ios;"];
// 获取
NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for (NSHTTPCookie *cookie in [cookieJar cookies]) {
[cookieDic setObject:cookie.value forKey:cookie.name];
}
// cookie重复，先放到字典去重，再进行拼接
for (NSString *key in cookieDic) {
NSString *appendString = [NSString stringWithFormat:@"%@=%@;", key, [cookieDic valueForKey:key]];
[cookieValue appendString:appendString];
}
// 将cookie存到请求头中
[operationManager.requestSerializer setValue:cookieValue forHTTPHeaderField:@"Cookie"];
// 拼接url地址
NSString *urlStr = [NSString stringWithFormat:@"%@%@", kHostIP, kPath];
// 设置参数字典
NSDictionary *paraDict = @{
@"key" : value
};
// 发送请求，处理结果
[operationManager POST:urlStr parameters:paraDict success:^(AFHTTPRequestOperation * _Nonnull operation, id _Nonnull responseObject) {
NSLog(@"responseObject-->%@", responseObject);
} failure:^(AFHTTPRequestOperation * _Nullable operation, NSError * _Nonnull error) {
NSLog(@"error-->%@", error);
}];
WKWebView：
如果WKWebView在加载url的时候需要添加cookie，需要先手动获取当前NSHTTPCookieStorage中的所有cookie，然后将cookie放到NSMutableURLRequest请求头中
- (void)loadRequestWithUrlString:(NSString *)urlString {
// 在此处获取返回的cookie
NSMutableDictionary *cookieDic = [NSMutableDictionary dictionary];
NSMutableString *cookieValue = [NSMutableString stringWithFormat:@""];
NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for (NSHTTPCookie *cookie in [cookieJar cookies]) {
[cookieDic setObject:cookie.value forKey:cookie.name];
}
// cookie重复，先放到字典进行去重，再进行拼接
for (NSString *key in cookieDic) {
NSString *appendString = [NSString stringWithFormat:@"%@=%@;", key, [cookieDic valueForKey:key]];
[cookieValue appendString:appendString];
}
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString]];
[request addValue:cookieValue forHTTPHeaderField:@"Cookie"];
[self loadRequest:request];
}
UIWebView：
// 工厂类中存储cookie的方法
+ (void)saveCookies {
// 创建一个可变字典存放cookie
NSMutableDictionary *fromappDict = [NSMutableDictionary dictionary];
[fromappDict setObject:@"fromapp" forKey:NSHTTPCookieName];
[fromappDict setObject:@"ios" forKey:NSHTTPCookieValue];
// kDomain是公司app网址
[fromappDict setObject:kDomain forKey:NSHTTPCookieDomain];
[fromappDict setObject:kDomain forKey:NSHTTPCookieOriginURL];
[fromappDict setObject:@"/" forKey:NSHTTPCookiePath];
[fromappDict setObject:@"0" forKey:NSHTTPCookieVersion];
// 将可变字典转化为cookie
NSHTTPCookie *cookie = [NSHTTPCookie cookieWithProperties:fromappDict];
// 获取cookieStorage
NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage]
// 存储cookie
[cookieStorage setCookie:cookie];
}
注意：
- UIWebView使用时间较长，只要在cookieStorage中设置了相应的cookie，每次就会自动带上；
- 但是这样的弊端是随着与H5的交互增加，Cookie占用的空间越来越大，每次交互都夹带大量的cookie，不仅增加服务器端压力，也浪费用户的流量。比如每次交互都夹带5kb的cookie内容，但是真正用到的只有两三百字节。
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