webView设置请求头

_webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 64, Width, Height-64)];
self.automaticallyAdjustsScrollViewInsets = NO;
_webView.scrollView.showsVerticalScrollIndicator = NO;
_webView.delegate = self;
[self.view addSubview:_webView];

//创建请求对象
NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:[NSURL URLWithString:self.urlStr]];//默认为get请求
NSLog(@"self.urlStr:%@",self.urlStr);
request.timeoutInterval=5.0;//设置请求超时为5秒
request.HTTPMethod=@"GET";//设置请求方法

//设置请求体
//把拼接后的字符串转换为data，设置请求体
//request.HTTPBody=[param dataUsingEncoding:NSUTF8StringEncoding];
NSString * sessionID = [GJTool objectForKey:@"session_id"];
NSLog(@"sessionID:%@",sessionID);
// 创建POST请求参数
// 设置请求头
//客户端类型，只能写英文
[request setValue:sessionID forHTTPHeaderField:@"CheHuangAuto"];

[_webView loadRequest:request];