IOS-网络（文件上传）

  1 //
  2 //  ViewController.m
  3 //  IOS_0206_文件上传
  4 //
  5 //  Created by ma c on 16/2/6.
  6 //  Copyright © 2016年 博文科技. All rights reserved.
  7 //
  8 
  9 #import "ViewController.h"
 10 #define BWFileBoundary @"----------BowenKeJi"
 11 #define BWNewLine @"
"
 12 #define BWEncode(str) [str dataUsingEncoding:NSUTF8StringEncoding]
 13 
 14 @interface ViewController ()
 15 
 16 @end
 17 
 18 @implementation ViewController
 19 
 20 /*
 21  一、文件上传的概括
 22  参数1
 23  参数2
 24  结束标记3
 25  
 26  --------------------------------------------------------------
 27  二、文件上传的格式
 28  
 29  1.文件参数
 30  BowenKeJi
 31  
 32  Content-Disposition: form-data; name="参数名"; filename="文件名"
 33  
 34  Content-Type: 文件类型/MIMEType
 35  
 36  
 37  文件具体数据
 38  
 39  2.非文件参数
 40  BowenKeJi
 41  
 42  Content-Disposition: form-data; name="参数名"
 43  
 44  
 45  参数值
 46  
 47  3.结束标记
 48  BowenKeJi--
 49  
 50  -------------------------------------------------------------------
 51  三、文件的MIMEType
 52  1.百度搜索
 53  2.apache-tomcat-版本号/conf/web.xml
 54  3.加载文件时通过Reponse获得
 55  -------------------------------------------------------------------
 56  */
 57 
 58 - (void)viewDidLoad {
 59     [super viewDidLoad];
 60     
 61     self.view.backgroundColor = [UIColor cyanColor];
 62     
 63     NSString *name = @"jack";
 64     [self test:&name];
 65     NSLog(@"%@",name);
 66 
 67 }
 68 
 69 ///在方法中更改字符串的值
 70 - (void)test:(NSString **)str
 71 {
 72     *str = @"bowen";
 73 }
 74 
 75 - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
 76 {
 77     //[self upload];
 78     
 79     //文件参数
 80     NSDictionary *params = @{
 81                              @"username" : @"bowen"
 82                              };
 83     //文件数据
 84 //    UIImage *image = [UIImage imageNamed:@"abc"];
 85 //    NSData *imgData = UIImageJPEGRepresentation(image, 1);
 86 //    [self upload:@"text.png" AndMIMEType:@"image/png" AndfileData:imgData AndParams:params];
 87     
 88     NSURL *url = [[NSBundle mainBundle] URLForResource:@"abc" withExtension:@"jpg"];
 89     NSData *data = [NSData dataWithContentsOfURL:url];
 90     NSString *MIMEType = [self MIMEType:url];
 91     [self upload:@"cba.jpg" AndMIMEType:MIMEType AndfileData:data AndParams:params];
 92     
 93     
 94 //    NSURL *url1 = [[NSBundle mainBundle] URLForResource:@"abc" withExtension:@"jpg"];
 95 //    //NSURL *url1 = [NSURL fileURLWithPath:@"/Users/apple/Desktop/hehe.text"];
 96 //    NSString *mimeType = [self MIMEType:url1];
 97 //    NSLog(@"%@",mimeType);
 98     
 99 }
100 
101 ///文件的MIMEType
102 - (NSString *)MIMEType:(NSURL *)url
103 {
104     //1.创建一个请求
105     NSURLRequest *request = [NSURLRequest requestWithURL:url];
106     
107     NSURLResponse *response = nil;
108     //2.发送请求（返回响应）
109     [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil];
110     //3.获得MIMEType
111     return response.MIMEType;
112 }
113 
114 ///文件上传未封装
115 - (void)upload
116 {
117      // 1.请求路径
118      NSURL *url = [NSURL URLWithString:@"http://localhost:8080/MJServer/upload"];
119      // 2.创建一个POST请求
120      NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
121      request.HTTPMethod = @"POST";
122      // 2.设置请求头（告诉服务器这次上传的是文件数据）
123      NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",BWFileBoundary];
124      [request setValue:contentType forHTTPHeaderField:@"Content-Type"];
125      // 3.设置请求体
126      NSMutableData *body = [NSMutableData data];
127      
128      // 4.1文件参数
129      [body appendData:BWEncode(@"--")];
130      [body appendData:BWEncode(BWFileBoundary)];
131      [body appendData:BWEncode(BWNewLine)];
132      
133      [body appendData:BWEncode(@"Content-Disposition: form-data; name="file"; filename="ts.jpg"")];
134      [body appendData:BWEncode(BWNewLine)];
135      
136      [body appendData:BWEncode(@"Content-Type: image/jpg")];
137      [body appendData:BWEncode(BWNewLine)];
138      
139      //具体内容
140      [body appendData:BWEncode(BWNewLine)];
141      UIImage *image = [UIImage imageNamed:@"abc"];
142      NSData *imgData = UIImageJPEGRepresentation(image, 1);
143      [body appendData:imgData];
144      [body appendData:BWEncode(BWNewLine)];
145      
146      // 4.2非文件参数（用户名参数）
147      [body appendData:BWEncode(@"--")];
148      [body appendData:BWEncode(BWFileBoundary)];
149      [body appendData:BWEncode(BWNewLine)];
150      
151      [body appendData:BWEncode(@"Content-Disposition: form-data; name="username"")];
152      [body appendData:BWEncode(BWNewLine)];
153      
154      [body appendData:BWEncode(BWNewLine)];
155      [body appendData:BWEncode(@"bowen")];
156      [body appendData:BWEncode(BWNewLine)];
157      
158      // 4.3结束标记
159      [body appendData:BWEncode(@"--")];
160      [body appendData:BWEncode(BWFileBoundary)];
161      [body appendData:BWEncode(@"--")];
162      [body appendData:BWEncode(BWNewLine)];
163      
164      request.HTTPBody = body;
165      
166      // 5.发送请求
167      [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) {
168      NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];
169      NSLog(@"%@",dict);
170      }];
171 }
172      
173 ///文件上传封装
174 - (void)upload:(NSString *)filename AndMIMEType:(NSString *)mimeType AndfileData:(NSData *)fileData
175    AndParams:(NSDictionary *)dict
176 {
177     // 1.请求路径
178     NSURL *url = [NSURL URLWithString:@"http://localhost:8080/MJServer/upload"];
179     // 2.创建一个POST请求
180     NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
181     request.HTTPMethod = @"POST";
182     // 2.设置请求头（告诉服务器这次上传的是文件数据）
183     NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",BWFileBoundary];
184     [request setValue:contentType forHTTPHeaderField:@"Content-Type"];
185     // 3.设置请求体
186     NSMutableData *body = [NSMutableData data];
187     
188     // 4.1文件参数
189     [body appendData:BWEncode(@"--")];
190     [body appendData:BWEncode(BWFileBoundary)];
191     [body appendData:BWEncode(BWNewLine)];
192     NSString *disposition = [NSString stringWithFormat:@"Content-Disposition: form-data; name="file"; filename="%@"",filename];
193     [body appendData:BWEncode(disposition)];
194     [body appendData:BWEncode(BWNewLine)];
195     
196     NSString *type = [NSString stringWithFormat:@"Content-Type: %@",mimeType];
197     [body appendData:BWEncode(type)];
198     [body appendData:BWEncode(BWNewLine)];
199     
200     //具体内容
201     [body appendData:BWEncode(BWNewLine)];
202     [body appendData:fileData];
203     [body appendData:BWEncode(BWNewLine)];
204     
205     // 4.2非文件参数（用户名参数）
206 
207     [dict enumerateKeysAndObjectsUsingBlock:^(id  _Nonnull key, id  _Nonnull obj, BOOL * _Nonnull stop) {
208         [body appendData:BWEncode(@"--")];
209         [body appendData:BWEncode(BWFileBoundary)];
210         [body appendData:BWEncode(BWNewLine)];
211         
212         NSString *disposition = [NSString stringWithFormat:@"Content-Disposition: form-data; name="%@"",key];
213         
214         [body appendData:BWEncode(disposition)];
215         [body appendData:BWEncode(BWNewLine)];
216         
217         [body appendData:BWEncode(BWNewLine)];
218         [body appendData:BWEncode([obj description])];
219         [body appendData:BWEncode(BWNewLine)];
220 
221     }];
222     // 4.3结束标记
223     [body appendData:BWEncode(@"--")];
224     [body appendData:BWEncode(BWFileBoundary)];
225     [body appendData:BWEncode(@"--")];
226     [body appendData:BWEncode(BWNewLine)];
227     
228     request.HTTPBody = body;
229     
230     // 5.发送请求
231     [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) {
232         NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];
233         NSLog(@"%@",dict);
234     }];
235 }
236 @end