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

 //
 //  NSObject+HttpServer.h
 //  sxypt
 //
 //  Created by 李 泽波 on 13-1-9.
 //  Copyright (c) 2013年 xxx有限公司. All rights reserved.
 //

 #import <Foundation/Foundation.h>
 #import "mongoose.h"

 @interface HttpServer : NSObject
 {
     struct mg_context *MG_CTX;//http server
 }

 @property struct mg_context *MG_CTX;

 - (void)http_server_start;
 - (void)http_server_stop;
 - (void)test_http_server;

 @end

HttpServer.m

 //
 //  NSObject+HttpServer.m
 //  sxypt
 //
 //  Created by 李 泽波 on 13-1-9.
 //  Copyright (c) 2013年 xxx有限公司. All rights reserved.
 //

 #import "HttpServer.h"
 #import "Constant.h"

 @implementation HttpServer

 @synthesize MG_CTX;

 - (id) initHttpServer
 {
     self = [super init];
     if(self){

     }
     return self;
 }

 - (void)http_server_start
 {
     NSString *path = [NSString stringWithFormat:@"%@%@", [[NSBundle mainBundle] resourcePath], OfflineWebRootPath];
     char *rootPath = (char *)[path UTF8String];
     char *serverPort = (char *)[OfflineWebServerPort UTF8String];
     const char *options[] = {
         "document_root", rootPath,
         "listening_ports", serverPort,
         NULL
     };
     self.MG_CTX = mg_start(&callback, NULL, options);
     NSLog(@"http server start at port: %@", OfflineWebServerPort);
 }

 - (void)http_server_stop
 {
     mg_stop(self.MG_CTX);
     NSLog(@"http server stoped");
 }

 - (void)test_http_server
 {
     NSString *urlString = [NSString stringWithFormat:@"%@:%@%@", OfflineWebServer, OfflineWebServerPort, @"/index.html"];
     NSURL *url = [NSURL URLWithString:urlString];
     NSString *response = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];
     NSLog(@"%@", response);
 }

 void *callback(enum mg_event event, struct mg_connection *conn)
 {
     const struct mg_request_info *request_info = mg_get_request_info(conn);

     if (event == MG_NEW_REQUEST) {
         char content[];
         int content_length = snprintf(content, sizeof(content),
                                       "Hello from mongoose! Remote port: %d",
                                       request_info->remote_port);
         mg_printf(conn,
                   "HTTP/1.1 200 OK\r\n"
                   "Content-Type: text/plain\r\n"
                   "Content-Length: %d\r\n"        // Always set Content-Length
                   "\r\n"
                   "%s",
                   content_length, content);
         // Mark as processed
         return "";
     } else {
         return NULL;
     }
 }

 @end