因所在公司项目久远，网络请求一直用的是ASIHTTPRequest,一步一步写起来太麻烦，故对其封装下，废话不多说直接上代码：
1.引入ASI，本人使用CocoaPods三方库管理工具
platform :ios, '7.0'
target 'ASINetworking' do
pod 'ASIHTTPRequest'
......
end
2. 先创建一个工具类
ASIHttpUtil.h
/**
* 请求完成回调方法
*/
typedef void (^CompleteBlock)(id json, NSString *stringData);
typedef void (^FailedBlock)(NSError *error);
typedef void (^ProgressBlock)(float progress);
/**
* GET请求，有参数
*
* @param path 接口路径，不能为空
* @param paramsDic 请求的参数的字典，参数可为nil, 例如：NSDictionary *params = @{@"key":@"value"}
* @param completeBlock 请求完成块，返回 id JSON, NSString *stringData;
* @param failed 请求失败块，返回 NSError *error;
*/
+ (ASIHTTPRequest *)getRequestWithPath:(NSString *)path params:(NSDictionary *)paramsDic completed:(CompleteBlock)completeBlock failed:(FailedBlock)failed;
/**
* POST请求，有参数；
*
* @param path 接口路径，不能为空；
* @param paramsDic 请求的参数的字典，参数可为nil, 例如：NSDictionary *params = @{@"key":@"value"}
* @param completeBlock 请求完成块，返回 id JSON, NSString *stringData;
* @param failed 请求失败块，返回 NSError *error;
*
* @return 返回ASIHTTPRequest的指针，可用于 NSOperationQueue操作
*/
+ (ASIHTTPRequest *)postRequestWithPath:(NSString *)path params:(NSDictionary *)paramsDic completed:(CompleteBlock)completeBlock failed:(FailedBlock)failed;
ASIHttpUtil.m
#pragma mark GET请求
+ (ASIHTTPRequest *)getRequestWithPath:(NSString *)path params:(NSDictionary *)paramsDic completed:(CompleteBlock)completeBlock failed:(FailedBlock)failed{
NSString *urlString = [NSString stringWithFormat:@"%@",path];
urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *url = [NSURL URLWithString:urlString];
__weak ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
request.requestMethod = @"GET";
for (NSString *key in sg_httpHeaders.allKeys) {
if (sg_httpHeaders[key] != nil) {
[request addRequestHeader:key value:sg_httpHeaders[key]];
}
}
[request setCompletionBlock:^{
NSError *errorForJSON = [NSError errorWithDomain:@"请求数据解析为json格式，发出错误" code:2014 userInfo:@{@"请求数据json解析错误": @"中文",@"serial the data to json error":@"English"}];
id jsonData = [NSJSONSerialization JSONObjectWithData:[request responseData] options:0 error:&errorForJSON];
completeBlock(jsonData,request.responseString);
}];
[request setFailedBlock:^{
failed([request error]);
}];
[request setNumberOfTimesToRetryOnTimeout:requestTimesTry];
[request setTimeOutSeconds:requestTimeLimited];
[request startAsynchronous];
return request;
}
#pragma mark POST请求
+ (ASIHTTPRequest *)postRequestWithPath:(NSString *)path params:(NSDictionary *)paramsDic completed:(CompleteBlock)completeBlock failed:(FailedBlock)failed{
NSString *urlString = [NSString stringWithFormat:@"%@",path];
urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *url = [NSURL URLWithString:urlString];
__weak ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
request.requestMethod = @"POST";
for (NSString *key in sg_httpHeaders.allKeys) {
if (sg_httpHeaders[key] != nil) {
[request addRequestHeader:key value:sg_httpHeaders[key]];
}
}
[paramsDic enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
[request setPostValue:obj forKey:key];
}];
[request setCompletionBlock:^{
NSError *errorForJSON = [NSError errorWithDomain:@"请求数据解析为json格式，发出错误" code:2014 userInfo:@{@"请求数据json解析错误": @"中文",@"serial the data to json error":@"English"}];
id jsonData = [NSJSONSerialization JSONObjectWithData:[request responseData] options:0 error:&errorForJSON];
completeBlock(jsonData, request.responseString);
}];
[request setFailedBlock:^{
failed([request error]);
}];
[request setNumberOfTimesToRetryOnTimeout:requestTimesTry];
[request setTimeOutSeconds:requestTimeLimited];
[request startAsynchronous];
return request;
}
本文只针对于GET请求方法和POST请求方法做了介绍，Demo中还详细介绍了文件上传及下载等方法的封装，有需要的朋友可以下载查看，希望对你有所帮助。
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