.h 文件中
代码如下
import
@interface LBNetWorkManager : NSObject
+(LBNetWorkManager *)netManager;
-(void)Post:(NSString *)urlStr obj:(id)obj Success:(void (^)(id result))success Fault:(void (^)(id result))fault;
@end
这个够简单了吧
再来.m文件中
代码如下
import "LBNetWorkManager.h"
import
//定义成功的回调，接收传过来的block，在下载数据成功后回调到调用查询数据的地方
typedef void (^Success)(id result);
typedef void (^Fault) (id result);
@interface LBNetWorkManager()
//接收数据
@property (nonatomic,strong)NSMutableData * receiveData;
//使用copy是将block从栈转移到堆， 避免内存释放是栈上的被释放，如果那样子， 在调用处是无论如何都不能接收到返回数据
@property (nonatomic,copy)Success success;
@property (nonatomic,copy)Fault fault;
@end
@implementation LBNetWorkManager
+(LBNetWorkManager *)netManager{
//类方法创建对象， 最好每个请求都创建一个对象，这样子不会导致异步时的不确定性
LBNetWorkManager *netManager = [[LBNetWorkManager alloc]init];
return netManager;
}
pragma mark urlStr直接传入拼接的字符串 obj必须是传入一个对象
-(void)Post:(NSString *)urlStr obj:(id)obj Success:(void (^)(id result))success Fault:(void (^)(id result))fault{
//成功的回调，_suceess 的指针指向success，以后调用_success 就是调用success，下同
_success = success;
//失败的回调
_fault = fault;
//构建为请求url
NSURL * url = [NSURL URLWithString:urlStr];
//获取json格式的data
NSData *data = [self getJSON:obj];
//设置请求
NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10];
//请求方式
[request setHTTPMethod:@"POST"];
//请求内容格式
[request addValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
//请求体
[request setHTTPBody:data];
//开始连接
NSURLConnection * connection = [[NSURLConnection alloc]initWithRequest:request delegate:self];
}
//当连接通了之后再做初始化
-
(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
//请求的返回信息
NSHTTPURLResponse *res = (NSHTTPURLResponse *)response;NSLog(@"%@",[res allHeaderFields]);
self.receiveData = [NSMutableData data];
}
//接收到服务器传输数据的时候调用，此方法根据数据大小执行若干次
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
//信息是一个一个的来的 所以就需要将返回的信息追加到数据后面
[self.receiveData appendData:data];
}
//数据传完之后调用此方法
-(void)connectionDidFinishLoading:(NSURLConnection *)connection{
//将得到的信息转为字典
NSDictionary * dictAnalysis= [self receiveDataChangeTouchDictionary];
//在这里返回数据到调用处
_success(dictAnalysis);
}
//请求成功后，将返回的数据转换为字典
- (NSDictionary *)receiveDataChangeTouchDictionary{
//判断是否为空，为空则不转
if (!_receiveData) {
return nil;
}
NSError *error;
//转为字典
NSDictionary *dictAnalysis = [NSJSONSerialization JSONObjectWithData:self.receiveData options:NSJSONReadingMutableContainers error:&error];
if(error) {
NSLog(@"json解析失败：%@",error);
return nil;
}
return dictAnalysis;
}
//网络请求过程中，出现任何错误（断网，连接超时等）会进入此方法
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
//返回错误信息，
_fault(error);
}
//获取json格式的数据
-(NSData*)getJSON:(id)obj{
return [self getJSON:obj options:NSJSONWritingPrettyPrinted error:nil];
}
-(NSData)getJSON:(id)obj options:(NSJSONWritingOptions)options error:(NSError*)error{
return [NSJSONSerialization dataWithJSONObject:[self getObjectData:obj] options:options error:error];
}
//将对象的属性和值对应起来， 作为字典的格式
-(NSDictionary*)getObjectData:(id)obj{
NSMutableDictionary
*dic = [NSMutableDictionary dictionary];
unsigned
int propsCount;
objc_property_t *props = class_copyPropertyList([obj class], &propsCount);
for(int i = 0;i < propsCount; i++){
objc_property_t prop = props[i];
NSString *propName = [NSString stringWithUTF8String:property_getName(prop)];
id value = [obj valueForKey:propName];
if(value == nil) {
value = [NSNull null];
}
else {
value = [self getObjectInternal:value];
}
[dic setObject:value forKey:propName];
}
return dic;
}
-(id)getObjectInternal:(id)obj{
if([obj isKindOfClass:[NSString class]]
|| [obj isKindOfClass:[NSNumber class]]
|| [obj isKindOfClass:[NSNull class]]){
return obj;
}
if([obj isKindOfClass:[NSArray class]]) {
NSArray *objarr = obj;
NSMutableArray *arr = [NSMutableArray arrayWithCapacity:objarr.count];
for(int i = 0;i < objarr.count; i++) {
[arr setObject:[self getObjectInternal:[objarr objectAtIndex:i]] atIndexedSubscript:i];
}
return arr;
}
if([obj isKindOfClass:[NSDictionary class]]) {
NSDictionary *objdic = obj;
NSMutableDictionary *dic = [NSMutableDictionary dictionaryWithCapacity:[objdic count]];
for(NSString *key in objdic.allKeys){
[dic setObject:[self getObjectInternal:[objdic objectForKey:key]] forKey:key];
}
return dic;
}
return [self getObjectData:obj];
}
@end
调用的时候
代码如下
-(void)loginAction{
NSString * userName = [self makeInputStrToBeStandard:self.fieldUserName.text];
NSString * passWord = self.fieldPassWord.text;
NSString *URLStr = [NSString stringWithFormat:@" http://121.196.227.33:1688/api/%@",@"postSearch"];
LBLoginModel * loginModel = [[LBLoginModel alloc]initWithPhoneNumber:userName password:passWord];
loginModel.text = [[LBLoginModelText alloc]init];
loginModel.text.PhoneNumber = @"123";
loginModel.text.WeiboId = @"234";
self.netManager = [LBNetWorkManager netManager];
[self.netManager Post:URLStr obj:loginModel Success:^(id result) {
} Fault:^(id result) {
}];
}