这几天，项目需要将图片，音频文件（如mp3）上传到服务器，以方便之后的使用。在网上查询了很多资料，一般有以下几种方式，1.ASIHTTPRequest 方式
2.
AFNetWorking方式，3. ASIFormDataRequest方式 4 .NSMutableURLRequest方式。前面3种方式都需要加载对应的库或者第3方库，我并没有搞出来。所以现在就第3种方式进行说明。
JAVA可以使用表单方式直接上传图片，音频等等。但IOS并没有提供类似的方式，如果要使用的话，就需要模拟出类似的post请求，java段post源代码为：
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Form Page</title>
</head>
<body>
<h1>Upload a File</h1>
<form action="http://192.168.2.153:28080/upload" method="post" enctype="multipart/form-data">
<p>
Select a file : <input type="file" name="file" size="50" />
</p>
<input type="submit" value="Upload It" />
</form>
</body>
</html>
以下是我封装的代码，参考网上进行修改的：
+(NSString*)uploadImage:(NSString*)url param:(NSMutableDictionary*)params format:(NSString*)fmat
{
//分界线的标识符
NSString *TWITTERFON_FORM_BOUNDARY = @"AaB03x";
//根据url初始化request
NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url]
cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
timeoutInterval:10];
//分界线 --AaB03x
NSString *MPboundary=[[NSString alloc]initWithFormat:@"--%@",TWITTERFON_FORM_BOUNDARY];
//结束符 AaB03x--
NSString *endMPboundary=[[NSString alloc]initWithFormat:@"%@--",MPboundary];
//要上传的图片
UIImage *image=[UIImage imageNamed:[params objectForKey:@"pic"]];
//得到图片的data
NSData* data = UIImagePNGRepresentation(image);
//http body的字符串
NSMutableString *body=[[NSMutableString alloc]init];
//参数的集合的所有key的集合
NSArray *keys= [params allKeys];
//遍历keys
for(int i=0;i<[keys count];i++)
{
//得到当前key
NSString *key=[keys objectAtIndex:i];
//如果key不是pic，说明value是字符类型，比如name：Boris
if(![key isEqualToString:@"pic"])
{
//添加分界线，换行
[body appendFormat:@"%@\r\n",MPboundary];
//添加字段名称，换2行
[body appendFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n",key];
//添加字段的值
[body appendFormat:@"%@\r\n",[params objectForKey:key]];
}
}
////添加分界线，换行
[body appendFormat:@"%@\r\n",MPboundary];
//声明pic字段，文件名为boris.png
//[body appendFormat:@"Content-Disposition: form-data; name=\"pic\"; filename=\"text02.png\"\r\n"];
[body appendFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"%@\"\r\n",FORM_FLE_INPUT,[params objectForKey:@"pic"]];
//声明上传文件的格式
//[body appendFormat:@"Content-Type: image/png,image/jpeg\r\n\r\n"];
NSString *contype = [NSString stringWithFormat:@"Content-Type: %@\r\n\r\n",fmat];
NSLog(@"content type=%@",contype);
[body appendFormat:@"Content-Type: %@\r\n\r\n",fmat];
//声明结束符：--AaB03x--
NSString *end=[[NSString alloc]initWithFormat:@"\r\n%@",endMPboundary];
//声明myRequestData，用来放入http body
NSMutableData *myRequestData=[NSMutableData data];
//将body字符串转化为UTF8格式的二进制
[myRequestData appendData:[body dataUsingEncoding:NSUTF8StringEncoding]];
//将image的data加入
[myRequestData appendData:data];
//加入结束符--AaB03x--
[myRequestData appendData:[end dataUsingEncoding:NSUTF8StringEncoding]];
//设置HTTPHeader中Content-Type的值
NSString *content=[[NSString alloc]initWithFormat:@"multipart/form-data; boundary=%@",TWITTERFON_FORM_BOUNDARY];
//设置HTTPHeader
[request setValue:content forHTTPHeaderField:@"Content-Type"];
//设置Content-Length
[request setValue:[NSString stringWithFormat:@"%d", [myRequestData length]] forHTTPHeaderField:@"Content-Length"];
//设置http body
[request setHTTPBody:myRequestData];
//http method
[request setHTTPMethod:@"POST"];
//建立连接，设置代理
NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
//设置接受response的data
if (conn) {
NSLog(@"connect successs");
NSHTTPURLResponse *urlResponese = nil;
NSError *error;
NSData* resultData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponese error:&error];
NSString* result= [[NSString alloc] initWithData:resultData encoding:NSUTF8StringEncoding];
NSLog(@"error=%@",[error localizedFailureReason]);
NSLog(@"返回结果=====%@ resuct code=%d ",result,[urlResponese statusCode]);
return result;
}
return nil;
}
调用的方式如下：
NSMutableDictionary *pa = [NSMutableDictionary dictionaryWithCapacity:1];
[pa setValue:@"view1.jpg" forKey:@"pic"];
[pa setValue:@"view1" forKey:@"field1"];
//[pa setValue:@"jpeg" forKey:@"format"];
NSString* result = [具体类 uploadImage: urlstring param:pa format:@"image/jpeg"];
NSLog(@"result = %@",result);
第一个参数为上传服务器的ip地址字符串，第2个参数为body值参数，根据具体情况可能有所不同，第3个参数为上传图片的格式。
时间： 2024-08-27 13:17:36