我們在開發過程中，經常會遇到有些頁面不止一個網絡請求，有時候需要兩個三個甚至更多，這個時候我們就需要隊列請求，下邊是GET請求的多個請求放在隊列里邊：

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[objc]?view plaincopyprint?

1. NSURL?*url?=?[NSURL?URLWithString:@"http://www.baidu.com"];??
2. ??
3. ????NSURLRequest?*request?=?[NSURLRequest?requestWithURL:url];??
4. ??
5. ????AFHTTPRequestOperation?*operation1?=?[[AFHTTPRequestOperation?alloc]?initWithRequest:request];??
6. ??
7. ????[operation1?setCompletionBlockWithSuccess:^(AFHTTPRequestOperation?*operation,?id?responseObject)?{??
8. ??
9. ????????NSLog(@"Response:?%@",?[[NSString?alloc]?initWithData:responseObject?encoding:NSUTF8StringEncoding]);??
10. ??
11. ????}?failure:^(AFHTTPRequestOperation?*operation,?NSError?*error)?{??
12. ??
13. ????????NSLog(@"Error:?%@",?error);??
14. ??
15. ????}];??
16. ??
17. ??????
18. ??
19. ??????
20. ??
21. ????NSURL?*url2?=?[NSURL?URLWithString:@"http://www.sohu.com"];??
22. ??
23. ????NSURLRequest?*request2?=?[NSURLRequest?requestWithURL:url2];??
24. ??
25. ????AFHTTPRequestOperation?*operation2?=?[[AFHTTPRequestOperation?alloc]?initWithRequest:request2];??
26. ??
27. ????[operation2?setCompletionBlockWithSuccess:^(AFHTTPRequestOperation?*operation,?id?responseObject)?{??
28. ??
29. ????????NSLog(@"Response2:?%@",?[[NSString?alloc]?initWithData:responseObject?encoding:NSUTF8StringEncoding]);??
30. ??
31. ????}?failure:^(AFHTTPRequestOperation?*operation,?NSError?*error)?{??
32. ??
33. ????????NSLog(@"Error:?%@",?error);??
34. ??
35. ????}];??
36. ??
37. ??????
38. ??
39. ??????
40. ??
41. ??????
42. ??
43. ????NSURL?*url3?=?[NSURL?URLWithString:@"http://www.sina.com"];??
44. ??
45. ????NSURLRequest?*request3?=?[NSURLRequest?requestWithURL:url3];??
46. ??
47. ????AFHTTPRequestOperation?*operation3?=?[[AFHTTPRequestOperation?alloc]?initWithRequest:request3];??
48. ??
49. ????[operation3?setCompletionBlockWithSuccess:^(AFHTTPRequestOperation?*operation,?id?responseObject)?{??
50. ??
51. ????????NSLog(@"Response3:?%@",?[[NSString?alloc]?initWithData:responseObject?encoding:NSUTF8StringEncoding]);??
52. ??
53. ????}?failure:^(AFHTTPRequestOperation?*operation,?NSError?*error)?{??
54. ??
55. ????????NSLog(@"Error:?%@",?error);??
56. ??
57. ????}];??
58. ??
59. ??????
60. ??
61. ??????
62. ??
63. ????//同時請求??
64. ??
65. ????NSOperationQueue?*operationQueue?=?[[NSOperationQueue?alloc]?init];??
66. ??
67. ????[operationQueue?setMaxConcurrentOperationCount:3];??
68. ??
69. ????[operationQueue?addOperations:@[operation1,?operation2,?operation3]?waitUntilFinished:NO];??
70. ??
71. ???
72. ??
73. ??????
74. ??
75. ????//operation2?在?operation1?請求完成后執行??
76. ??
77. ????NSOperationQueue?*operationQueue?=?[[NSOperationQueue?alloc]?init];??
78. ??
79. ????[operation2?addDependency:operation1];??
80. ??
81. ????[operationQueue?addOperations:@[operation1,?operation2,?operation3]?waitUntilFinished:NO];??

?

?

下邊是POST請求：

?

[objc]?view plaincopyprint?

1. 1. NSMutableURLRequest?*request?=?[NSMutableURLRequest?requestWithURL:[NSURL?URLWithString:@"https://gowalla.com/friendships/request?user_id=1699"]];??
   2. [request?setHTTPMethod:@"POST"];??
   3. ??
   4. NSDictionary?*headers?=?[NSDictionary?dictionaryWithObject:[NSString?stringWithFormat:@"Token?token=\"%@\"",?kOAuthToken]?forKey:@"Authorization"];??
   5. [request?setAllHTTPHeaderFields:headers];??
   6. ??
   7. AFHTTPRequestOperation?*operation?=?[AFHTTPRequestOperation?operationWithRequest:request?completion:^(NSURLRequest?*request,?NSHTTPURLResponse?*response,?NSData?*data,?NSError?*error)?{??
   8. ????BOOL?HTTPStatusCodeIsAcceptable?=?[[NSIndexSet?indexSetWithIndexesInRange:NSMakeRange(200,?100)]?containsIndex:[response?statusCode]];??
   9. ????if?(HTTPStatusCodeIsAcceptable)?{??
   10. ????????NSLog(@"Friend?Request?Sent");??
   11. ????}?else?{??
   12. ????????NSLog(@"[Error]:?(%@?%@)?%@",?[request?HTTPMethod],?[[request?URL]?relativePath],?error);??
   13. ????}??
   14. }];??
   15. ??
   16. NSOperationQueue?*queue?=?[[[NSOperationQueue?alloc]?init]?autorelease];??
   17. [queue?addOperation:operation]; ?

轉載于:https://www.cnblogs.com/weiboyuan/p/5053246.html

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