webView读取数据----乱码解决

读取磁盘中的data：

NSData *myData = [NSData dataWithContentsOfFile: fileDesPath];NSString *ext = [m_openFiles.fileExtension lowercaseString];NSString *mimeType;if ([ext isEqualToString:@"doc"]) {        mimeType = @"application/msword";    }else if([ext isEqualToString:@"xls"]){        mimeType = @"application/vnd.ms-excel";    }else if([ext isEqualToString:@"wma"]){        mimeType = @"audio/x-ms-wma";    }else if([ext isEqualToString:@"jpg"] || [ext isEqualToString:@"jpeg"]){        mimeType = @"image/jpeg";    }else if([ext isEqualToString:@"tif"]||[ext isEqualToString:@"tiff"]){        mimeType = @"image/tiff";    }else if([ext isEqualToString:@"htm"]||[ext isEqualToString:@"html"]){        mimeType = @"text/html";    }else if([ext isEqualToString:@"mov"]){        mimeType = @"video/quicktime";    }else if([ext isEqualToString:@"mp4"]){        mimeType = @"video/mp4";    }else if([ext isEqualToString:@"txt"]){        mimeType = @"text/plain";    }else{        mimeType = [NSString stringWithFormat:@"application/%@", ext];    //pdf    }    NSLog(mimeType);//Here, I can get the myData. The value is the content of the doc file.    if (myData) {          [self.myWebView loadData:myData MIMEType:mimeType textEncodingName:@"UTF-8" baseURL:[NSURL URLWithString:fileDesPath]];             }  

读取服务器返回的data：

 NSString *mimeType;        if([fileType isEqualToString:@"doc"])        {            mimeType=@"application/msword";        }        else if([ fileType isEqualToString:@"xls"])        {            mimeType=@"application/vnd.ms-excel";        }        else if([fileType isEqualToString:@"wma"])        {            mimeType=@"audio/x-ms-wma";        }        else if([@"png" isEqualToString:fileType]||[@"jpg" isEqualToString:fileType]||[@"jpeg" isEqualToString:fileType]||[@"bmp" isEqualToString:fileType]||[@"gif" isEqualToString:fileType])        {            mimeType=@"image/jpeg";        }        else if([fileType isEqualToString:@"tif"]||[fileType isEqualToString:@"tiff"])        {            mimeType=@"image/tiff";        }        else if([fileType isEqualToString:@"htm"]||[fileType isEqualToString:@"html"])        {            mimeType=@"text/html";        }        else if([fileType isEqualToString:@"mov"])        {            mimeType=@"video/quicktime";        }        else if([fileType isEqualToString:@"mp4"])        {            mimeType=@"video/mp4";        }        else if([fileType isEqualToString:@"txt"]||[fileType isEqualToString:@"java"])        {            mimeType=@"text/plain";        }        else         {            mimeType=[NSString stringWithFormat:@"application/%@",fileType];        }                                         //  (NSMutableData *)data 来自服务器端传递过来二进制流        NSData *imgdata=[NSData dataWithData:data];                if(imgdata){               [textViewVc.webView loadData:imgdata MIMEType:mimeType textEncodingName:@"UTF_8" baseURL:nil];        }