IOS客服端代碼

@interface ViewController ()

{

NSString *boundary;

NSString *fileParam;

NSString *baseUrl;

NSString *fileName;

}

@end

@implementation ViewController

- (void)viewDidLoad

{

[super viewDidLoad];

boundary = @"----------V2ymHFg03ehbqgZCaKO6jy";

fileParam = @"file";

baseUrl = @"http://url/from/server";

fileName = @"image.png";//此文件提前放在可讀寫區域

}

//請求方法

-(void)method4{

NSURL *uploadURL;

//文件路徑處理(隨意)

NSLog(@"請求路徑為%@",uploadURL);

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^(void){

NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];

NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration delegate:nil delegateQueue:nil];

//body

NSData *body = [self prepareDataForUpload];

//request

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:uploadURL];

[request setHTTPMethod:@"POST"];

// 以下2行是關鍵，NSURLSessionUploadTask不會自動添加Content-Type頭

NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary];

[request setValue:contentType forHTTPHeaderField: @"Content-Type"];

NSURLSessionUploadTask *uploadTask = [session uploadTaskWithRequest:request fromData:body completionHandler:^(NSData *data, NSURLResponse *response, NSError *error){

NSString *message = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

NSLog(@"message: %@", message);

[session invalidateAndCancel];

}];

[uploadTask resume];

});

}

//生成bodyData

-(NSData*) prepareDataForUpload

{

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentsDirectory = [paths objectAtIndex:0];

NSString *uploadFilePath = [documentsDirectory stringByAppendingPathComponent:fileName];//將圖片放在了documents中??

NSString *lastPathfileName = [uploadFilePath lastPathComponent];

NSMutableData *body = [NSMutableData data];

NSData *dataOfFile = [[NSData alloc] initWithContentsOfFile:uploadFilePath];

if (dataOfFile) {

[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];

[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"%@\"\r\n", fileParam, lastPathfileName] dataUsingEncoding:NSUTF8StringEncoding]];

[body appendData:[@"Content-Type: application/zip\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];

[body appendData:dataOfFile];

[body appendData:[[NSString stringWithFormat:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];

}

[body appendData:[[NSString stringWithFormat:@"--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];

return body;

}

Java服務器端代碼

//創建一個臨時文件存放要上傳的文件，第一個參數為上傳文件大小，第二個參數為存放的臨時目錄

DiskFileItemFactory factory = new DiskFileItemFactory(1024*1024*5,new File("D:\\temp1"));

// 設置緩沖區大小為 5M

factory.setSizeThreshold(1024 * 1024 * 5);

// 創建一個文件上傳的句柄

ServletFileUpload upload = new ServletFileUpload(factory);

//設置上傳文件的整個大小和上傳的單個文件大小

upload.setSizeMax(1024*1024*50);

upload.setFileSizeMax(1024*1024*5);

String[] fileExts = {"doc","zip","rar","jpg","txt"};

try { //把頁面表單中的每一個表單元素解析成一個

FileItem List items = upload.parseRequest(request);

for (FileItem fileItem : items) {

//如果是一個普通的表單元素(type不是file的表單元素)

if(fileItem.isFormField()){

System.out.println(fileItem.getFieldName());

//得到對應表單元素的名字

System.out.println(fileItem.getString());

// 得到表單元素的值

}else{ //獲取文件的后綴名

String fileName = fileItem.getName();//得到文件的名字

String fileExt = fileName.substring(fileName.lastIndexOf(".")+1, fileName.length());

if(Arrays.binarySearch(fileExts, fileExt)!=-1){

try { //將文件上傳到項目的upload目錄并命名，getRealPath可以得到該web項目下包含/upload的絕對路徑//

fileItem.write(new File(request.getServletContext().getRealPath("/upload")+"/" + UUID.randomUUID().toString()+"."+fileExt));

fileItem.write(new File("D:/test2.png"));

logger.info("文件上傳路徑："+request.getServletContext().getRealPath("/upload")+"/" + UUID.randomUUID().toString()+"."+fileExt);

} catch (Exception e) {

e.printStackTrace();

}

}else{

System.out.println("該文件類型不能夠上傳");

}

}

}

} catch (FileUploadBase.SizeLimitExceededException e) {

System.out.println("整個請求的大小超過了規定的大小...");

} catch (FileUploadBase.FileSizeLimitExceededException e) {

System.out.println("請求中一個上傳文件的大小超過了規定的大小...");

}catch (FileUploadException e) {

e.printStackTrace();

}

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