webView 加载本地文件 - html/htm pdf docx tx

 - (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;
 }