iOS中基于WebView的HTML网页离线访问技术的实现

其实就是MVC模式，视图在在线、离线时可以共用，控制器在在线时是由服务器端实现的，而离线时则是由本地Obj-C代码实现。具体实现方式为采用Mongoose实现。

代码为：

mongoose.h

mongoose.c

附件

http://files.cnblogs.com/files/lohcve/Mongoose.zip

调用方式：

HttpServer.h

 1 //
 2 //  NSObject+HttpServer.h
 3 //  sxypt
 4 //
 5 //  Created by 李 泽波 on 13-1-9.
 6 //  Copyright (c) 2013年 xxx有限公司. All rights reserved.
 7 //
 8
 9 #import <Foundation/Foundation.h>
10 #import "mongoose.h"
11
12 @interface HttpServer : NSObject
13 {
14     struct mg_context *MG_CTX;//http server
15 }
16
17 @property struct mg_context *MG_CTX;
18
19 - (void)http_server_start;
20 - (void)http_server_stop;
21 - (void)test_http_server;
22
23 @end

HttpServer.m

 1 //
 2 //  NSObject+HttpServer.m
 3 //  sxypt
 4 //
 5 //  Created by 李 泽波 on 13-1-9.
 6 //  Copyright (c) 2013年 xxx有限公司. All rights reserved.
 7 //
 8
 9 #import "HttpServer.h"
10 #import "Constant.h"
11
12 @implementation HttpServer
13
14 @synthesize MG_CTX;
15
16 - (id) initHttpServer
17 {
18     self = [super init];
19     if(self){
20
21     }
22     return self;
23 }
24
25 - (void)http_server_start
26 {
27     NSString *path = [NSString stringWithFormat:@"%@%@", [[NSBundle mainBundle] resourcePath], OfflineWebRootPath];
28     char *rootPath = (char *)[path UTF8String];
29     char *serverPort = (char *)[OfflineWebServerPort UTF8String];
30     const char *options[] = {
31         "document_root", rootPath,
32         "listening_ports", serverPort,
33         NULL
34     };
35     self.MG_CTX = mg_start(&callback, NULL, options);
36     NSLog(@"http server start at port: %@", OfflineWebServerPort);
37 }
38
39 - (void)http_server_stop
40 {
41     mg_stop(self.MG_CTX);
42     NSLog(@"http server stoped");
43 }
44
45 - (void)test_http_server
46 {
47     NSString *urlString = [NSString stringWithFormat:@"%@:%@%@", OfflineWebServer, OfflineWebServerPort, @"/index.html"];
48     NSURL *url = [NSURL URLWithString:urlString];
49     NSString *response = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];
50     NSLog(@"%@", response);
51 }
52
53 void *callback(enum mg_event event, struct mg_connection *conn)
54 {
55     const struct mg_request_info *request_info = mg_get_request_info(conn);
56
57     if (event == MG_NEW_REQUEST) {
58         char content[1024];
59         int content_length = snprintf(content, sizeof(content),
60                                       "Hello from mongoose! Remote port: %d",
61                                       request_info->remote_port);
62         mg_printf(conn,
63                   "HTTP/1.1 200 OK\r\n"
64                   "Content-Type: text/plain\r\n"
65                   "Content-Length: %d\r\n"        // Always set Content-Length
66                   "\r\n"
67                   "%s",
68                   content_length, content);
69         // Mark as processed
70         return "";
71     } else {
72         return NULL;
73     }
74 }
75
76 @end