- (void)viewDidLoad

 {

     [super viewDidLoad];

     [self setupUI];  

     NSString *path = [[NSBundle mainBundle] pathForResource:@"关于.docx" ofType:nil];

     NSURL *url = [NSURL fileURLWithPath:path];

     NSLog(@"%@", [self mimeType:url]);  

     //webview加载本地文件，可以使用加载数据的方式

     //第一个诶参数是一个NSData， 本地文件对应的数据

     //第二个参数是MIMEType

     //第三个参数是编码格式

     //相对地址，一般加载本地文件不使用，可以在指定的baseURL中查找相关文件。  

     //以二进制数据的形式加载沙箱中的文件，

     NSData *data = [NSData dataWithContentsOfFile:path];  

     [self.webView loadData:data MIMEType:@"application/vnd.openxmlformats-officedocument.wordprocessingml.document" textEncodingName:@"UTF-8" baseURL:nil];

 }  

 #pragma mark 加载docx文件

 - (void)loadDOCX

 {  

     NSString *path = [[NSBundle mainBundle] pathForResource:@"关于.docx" ofType:nil];

     NSURL *url = [NSURL fileURLWithPath:path];

     NSLog(@"%@", [self mimeType:url]);  

     NSData *data = [NSData dataWithContentsOfFile:path];  

     [self.webView loadData:data MIMEType:@"application/vnd.openxmlformats-officedocument.wordprocessingml.document" textEncodingName:@"UTF-8" baseURL:nil];}  

 #pragma mark 加载pdf文件

 - (void)loadPDF

 {

     NSString *path = [[NSBundle mainBundle] pathForResource:@"iOS6Cookbook.pdf" ofType:nil];

     NSURL *url = [NSURL fileURLWithPath:path];

     NSLog(@"%@", [self mimeType:url]);  

     NSData *data = [NSData dataWithContentsOfFile:path];  

     [self.webView loadData:data MIMEType:@"application/pdf" textEncodingName:@"UTF-8" baseURL:nil];

 }  

 #pragma mark 加载本地文本文件

 - (void)loadText

 {

     NSString *path = [[NSBundle mainBundle] pathForResource:@"关于.txt" ofType:nil];

     NSURL *url = [NSURL fileURLWithPath:path];

     NSLog(@"%@", [self mimeType:url]);  

     NSData *data = [NSData dataWithContentsOfFile:path];  

     [self.webView loadData:data MIMEType:@"text/plain" textEncodingName:@"UTF-8" baseURL:nil];

 }  

 #pragma mark 加载本地html文件

 - (void)loadHTML

 {

     NSString *path = [[NSBundle mainBundle] pathForResource:@"demo.html" ofType:nil];

     NSURL *url = [NSURL fileURLWithPath:path];

     NSLog(@"%@", [self mimeType:url]);  

     NSData *data = [NSData dataWithContentsOfFile:path];  

     [self.webView loadData:data MIMEType:@"text/html" textEncodingName:@"UTF-8" baseURL:nil];

 }  

 #pragma mark 获取指定URL的MIMEType类型

 - (NSString *)mimeType:(NSURL *)url

 {

     //1NSURLRequest

     NSURLRequest *request = [NSURLRequest requestWithURL:url];

     //2NSURLConnection  

     //3 在NSURLResponse里，服务器告诉浏览器用什么方式打开文件。  

     //使用同步方法后去MIMEType

     NSURLResponse *response = nil;

     [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil];

     return response.MIMEType;

 }