NSAppTransportSecurity：Dictionary
NSAllowsArbitraryLoads：Boolean YES

#import "ViewController.h"

@interface ViewController ()<NSURLSessionDelegate>

@property (strong, nonatomic) UITextField *userFile;
@property (strong, nonatomic) UITextField *passFile;

@property (copy, nonatomic) NSString *userStr;
@property (copy, nonatomic) NSString *passStr;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    
    UITextField *userFile = [[UITextField alloc] initWithFrame:CGRectMake(50, 100, self.view.frame.size.width-100, 44)];
    self.userFile = userFile;
    self.userFile.delegate = self;
    userFile.placeholder = @"请输入用户";
    userFile.backgroundColor =[UIColor lightGrayColor];
    [self.view addSubview:userFile];
    
    
    UITextField *passFile = [[UITextField alloc] initWithFrame:CGRectMake(50, 150, self.view.frame.size.width-100, 44)];
    self.passFile = passFile;
    self.passFile.delegate = self;
    passFile.placeholder = @"请输入密码";
    passFile.backgroundColor =[UIColor lightGrayColor];
    [self.view addSubview:passFile];
    
    
    UIButton *loginBtn = [[UIButton alloc] initWithFrame:CGRectMake(50, 200, 100, 44)];
    [loginBtn setTitle:@"登录" forState:UIControlStateNormal];
    [loginBtn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
    [loginBtn addTarget:self action:@selector(loginMethod) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:loginBtn];
    
}

-(void)textFieldDidEndEditing:(UITextField *)textField{
    
    if(textField == self.userFile){
        self.userStr = textField.text;
        NSLog(@"%@",self.userStr);
    }else{
        self.passStr = textField.text;
        NSLog(@"%@",self.passStr);
    }

}



- (void)loginMethod {
    NSURLSession *session = [NSURLSession sharedSession];
    NSURL *url = [NSURL URLWithString:@"http://172.20.10.2:8080/login.json"];
    // 通过URL初始化task,在block内部可以直接对返回的数据进行处理
    NSURLSessionTask *task = [session dataTaskWithURL:url
                                    completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
                                        
//                                        weakSelf.dict =  [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
                                        
                               
                                        NSLog(@"%@", [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil]);
                                    }];
    // 启动任务
    [task resume];
    
    
}

@end