封装网络请求

来源：互联网发布：java从入门到放弃 pdf 编辑：程序博客网时间：2024/05/01 05:24

#import "DataService.h"

#define BASE_URL @"https://api.weibo.com/2/"

@implementation DataService

+ (void)requestData:(NSString *)urlStr

htttpMethod:(NSString *)method

params:(NSMutableDictionary *)params

completionHandle:(void(^)(id result))block

{

//1.构建URL

urlStr = [BASE_URLstringByAppendingString:urlStr];

NSURL *url = [NSURLURLWithString:urlStr];

//2.构建request

NSMutableURLRequest *request = [NSMutableURLRequestrequestWithURL:url];

[request setTimeoutInterval:60];

[requestsetHTTPMethod:method];

if ([method isEqualToString:@"GET"]) {

//拼接URL---》https://api.weibo.com/2/statuses/home_timeline.json?access_token=2.00SllYeF568jxC1082c39bc40_Vqyg&username=aaa&pass=bbb

NSMutableString *paramsString = [[NSMutableStringalloc] initWithString:@"?"];

for (int i =0; i < params.count; i++) {

NSString *key = params.allKeys[i];

NSString *value = params[key];

[paramsStringappendFormat:@"%@=%@", key, value];

if (i < params.count -1) {

[paramsStringappendFormat:@"&"];

}

request.URL = [NSURLURLWithString:[urlStr stringByAppendingString:paramsString]];

}elseif ([method isEqualToString:@"POST"]) {

NSMutableString *paramsString = [[NSMutableStringalloc] initWithString:@""];

for (int i =0; i < params.count; i++) {

NSString *key = params.allKeys[i];

NSString *value = params[key];

[paramsStringappendFormat:@"%@=%@", key, value];

if (i < params.count -1) {

[paramsStringappendFormat:@"&"];

}

//access_token=2.00SllYeF568jxC1082c39bc40_Vqyg&username=aaa&pass=bbb

NSData *bodyData = [paramsString dataUsingEncoding:NSUTF8StringEncoding];

[requestsetHTTPBody:bodyData];

}

//构建connection对象

NSOperationQueue *queue = [[NSOperationQueuealloc] init];

[NSURLConnectionsendAsynchronousRequest:request

queue:queue

completionHandler:^(NSURLResponse *response,NSData *data, NSError *connectionError) {

if (connectionError) {

NSLog(@"Error: %@", connectionError);

return;

}

//解析Json

id result = [NSJSONSerializationJSONObjectWithData:data options:NSJSONReadingMutableContainerserror:nil];

//回到主线程调用block

dispatch_async(dispatch_get_main_queue(), ^{

//回掉block

block(result);

});

}];

}

@end

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