ASIHttpRequest-发送数据

发送数据

设定request头

ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL :url];
[request addRequestHeader : @ "Referer" value : @ "http://www.dreamingwish.com/" ];

使用ASIFormDataRequest POST表单

通常数据是以’application/x-www-form-urlencoded’格式发送的，如果上传了二进制数据或者文件，那么格式将自动变为‘multipart/form-data’ 

文件中的数据是需要时才从磁盘加载，所以只要web server能处理，那么上传大文件是没有问题的。

ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL :url];
[request setPostValue : @ "Ben" forKey : @ "first_name" ];
[request setPostValue : @ "Copsey" forKey : @ "last_name" ];
[request setFile : @ "/Users/ben/Desktop/ben.jpg" forKey : @ "photo" ];

数据的mime头是自动判定的，但是如果你想自定义mime头，那么这样：

ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL :url];

// Upload a file on disk
[request setFile : @ "/Users/ben/Desktop/ben.jpg" withFileName : @ "myphoto.jpg" andContentType : @ "image/jpeg"
forKey : @ "photo" ];

// Upload an NSData instance
[request setData :imageData withFileName : @ "myphoto.jpg" andContentType : @ "image/jpeg" forKey : @ "photo" ];

你可以使用addPostValue方法来发送相同name的多个数据（梦维：服务端会以数组方式呈现）：

ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL :url];
[request addPostValue : @ "Ben" forKey : @ "names" ];
[request addPostValue : @ "George" forKey : @ "names" ];
[request addFile : @ "/Users/ben/Desktop/ben.jpg" forKey : @ "photos" ];
[request addData :imageData withFileName : @ "george.jpg" andContentType : @ "image/jpeg" forKey : @ "photos" ];

PUT请求、自定义POST请求

如果你想发送PUT请求，或者你想自定义POST请求，使用appendPostData: 或者 appendPostDataFromFile:

ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL :url];
[request appendPostData :[ @ "This is my data" dataUsingEncoding : NSUTF8StringEncoding ]];
// Default becomes POST when you use appendPostData: / appendPostDataFromFile: / setPostBody:
[request setRequestMethod : @ "PUT" ];