一、服务端代码：

服务端是java用国产nutz搞的，实际mvc框架都大同小异。就是提交文件的同一时候还带了个表单參数

	@AdaptBy(type=UploadAdaptor.class, args={"${app.root}/WEB-INF/tmp/user_avatar", "8192", "utf-8", "20000", "102400"})

	@At

	@Aop("redis")

	public Object uploadAvatar(@Param("file")TempFile tf, @Param("token") String token, AdaptorErrorContext err) {

		// token 相应client參数名

		NutMap re = new NutMap();

		if (err != null && err.getAdaptorErr() != null) {

			return re.setv("code", 3).setv("msg", "文件大小不符合规定");

		}

		if (tf == null) {

			return re.setv("code", 4).setv("msg", "空文件");

		}

		if (Strings.isBlank(token)) {

			return re.setv("code", 2).setv("msg", "");// 没有token

		}

		String member_id = jedis().get(token);// 从redis依据token获取member_id

		if (Strings.isBlank(member_id)) {

			return re.setv("code", 2).setv("msg", "");// 未登录

		}

		File f = tf.getFile(); // 这个是保存的暂时文件

		FieldMeta meta = tf.getMeta(); // 这个原本的文件信息

		String oldName = meta.getFileLocalName(); // 这个时原本的文件名

		PropertiesProxy property = new PropertiesProxy("/custom/my.properties");

		String filename = System.currentTimeMillis() + oldName.substring(oldName.lastIndexOf("."));

		StringBuffer sb =new StringBuffer(property.get("my.filepath"));

		sb.append("\\avator\\");

		sb.append(filename);

		StringBuffer sbdb =new StringBuffer("/avator/");

		sbdb.append(filename);

		try {

			Files.move(f, new File(sb.toString()));

			//更新数据库

			dao.update(Member.class,Chain.make("avator", sbdb.toString()),Cnd.where("member_id", "=", member_id));

		} catch (IOException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

			return re.setv("code", 1);

		}

		return re.setv("code", 0).setv("msg", "");

	}

二、client代码：

用html表单提交的话，通常是这种

		<form action="${base}/usr/uploadAvatar" method="post"

			enctype="multipart/form-data">

			头像文件 <input type="file" name="file">

			<p />

			<div>

				token:<input name="token" >

			</div>

			<p />

			<button type="submit">更新头像</button>

		</form>

IOS搞的话。这边用的是AFNetworking 3.0，所以是这样写的

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{

    NSLog(@"图片选中");

    //截取图片

    UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage];

    NSData *imageData = UIImageJPEGRepresentation(image, 0.001);

    self.mv.portraitImageView.image = image;

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html",@"text/plain", nil];

    // 參数

    NSMutableDictionary *parameter = [NSMutableDictionary dictionary];

    parameter[@"token"] = "param....";

	// 訪问路径

    NSString *stringURL = [NSString stringWithFormat:@"%@%@",HOSTURL,kUploadAvatar];

    [manager POST:stringURL parameters:parameter constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {

        // 上传文件

        NSDateFormatter *formatter = [[NSDateFormatter alloc] init];

        formatter.dateFormat = @"yyyyMMddHHmmss";

        NSString *str = [formatter stringFromDate:[NSDate date]];

        NSString *fileName = [NSString stringWithFormat:@"%@.jpg", str];

        [formData appendPartWithFileData:imageData name:@"file" fileName:fileName mimeType:@"image/png"];

    } success:^(AFHTTPRequestOperation *operation, id responseObject) {

        NSLog(@"上传成功");

    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {

        NSLog(@"上传错误");

    }];

}

转载请注明：http://blog.csdn.net/wangqiuyun/article/details/50220465