Charles —— 青花瓷
- 网络抓包工具
- 可以拦截 iPhone/Android 手机中 App 的
非加密
网络请求数据
使用
- 手机&电脑在同一个局域网
- 确保电脑能够通过路由器访问互联网
- 电脑安装
Charles
- 启动
Charles
,禁用MAC OS X Proxy
&Mozilla FireFox Proxy
- 设置手机的网络代理
ip
: 电脑的 ip端口
: 8888
注意,如果让电脑通过手机的 3G
访问网络,无法拦截数据
拦截网易新闻数据
网络访问
建立网络访问单例
+ (instancetype)sharedManager {
static NetworkTools *instance;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
// 注意:baseURL 应该以 / 结尾
NSURL *baseURL = [NSURL URLWithString:@"http://c.m.163.com/nc/article/headline/"];
NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
instance = [[self alloc] initWithBaseURL:baseURL sessionConfiguration:config];
return instance;
}
加载新闻首页数据
- (void)loadData {
[[NetworkTools sharedManager] GET:@"T1348647853363/0-20.html" parameters:nil success:^(NSURLSessionDataTask *task, id responseObject) {
NSLog(@"%@ %@", responseObject, [responseObject class]);
} failure:^(NSURLSessionDataTask *task, NSError *error) {
NSLog(@"%@", error);
}];
}
运行测试,statecode == 200,但是不支持数据格式 "text/html"
扩展反序列化格式类型
- 在
NetworkTools
单例中,扩展反序列化格式类型
instance.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript", @"text/html", nil];
字典转模型
字典使用技巧 - 取第一个键值内容
// 直接取出字典中第一个 key T1348647853363 对应的数组
NSArray *array = responseObject[responseObject.keyEnumerator.nextObject];
NSLog(@"%@", array);
新闻模型
.h
/// 标题
@property (nonatomic, copy) NSString *title;
/// 摘要
@property (nonatomic, copy) NSString *digest;
/// 配图地址
@property (nonatomic, copy) NSString *imgsrc;
+ (instancetype)newsWithDict:(NSDictionary *)dict;
.m
+ (instancetype)newsWithDict:(NSDictionary *)dict {
id obj = [[self alloc] init];
[obj setValuesForKeysWithDictionary:dict];
return obj;
}
字典转模型
NSMutableArray *arrayM = [NSMutableArray arrayWithCapacity:array.count];
[array enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
[arrayM addObject:[News newsWithDict:obj]];
}];
NSLog(@"%@", arrayM);
运行测试-崩溃
- 因为网络字典中的属性键值比 News 模型中的属性多,直接使用
setValuesForKeysWithDictionary
方法会崩溃
修改新闻模型
+ (instancetype)newsWithDict:(NSDictionary *)dict {
id obj = [[self alloc] init];
NSArray *properties = [self properties];
for (NSString *key in properties) {
if (dict[key] != nil) {
[obj setValue:dict[key] forKey:key];
}
}
return obj;
}
+ (NSArray *)properties {
return @[@"title", @"digest", @"imgsrc"];
}
增加 description
- (NSString *)description {
NSDictionary *dict = [self dictionaryWithValuesForKeys:[News properties]];
return [NSString stringWithFormat:@"<%@: %p> %@", self.class, self, dict];
}
利用运行时动态获取类属性
const char* propertiesKey = "propertiesKey";
+ (NSArray *)properties {
NSMutableArray *arrayM = objc_getAssociatedObject(self, propertiesKey);
if (arrayM != nil) {
NSLog(@"返回关联数组");
return arrayM;
}
NSLog(@"动态获取类属性");
unsigned int count = 0;
objc_property_t *ptys = class_copyPropertyList([self class], &count);
arrayM = [NSMutableArray arrayWithCapacity:count];
for (unsigned int i = 0; i < count; ++i) {
objc_property_t pty = ptys[i];
const char* cname = property_getName(pty);
[arrayM addObject:[NSString stringWithUTF8String:cname]];
}
free(ptys);
objc_setAssociatedObject(self, propertiesKey, arrayM, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
return arrayM;
}