挺简单不多说的直接代码：

//

//  ViewController.h

//  JSAndJson

//

//  Created by WildCat on 13-9-8.

//  Copyright (c) 2013年 wildcat. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property (nonatomic, strong) UIWebView *myWebView;

@end

//

//  ViewController.m

//  JSAndJson

//

//  Created by WildCat on 13-9-8.

//  Copyright (c) 2013年 wildcat. All rights reserved.

//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

@synthesize myWebView;

//加载app中html函数

- (void)loadDocument:(NSString*)docName {

    NSString *mainBundleDirectory = [[NSBundle mainBundle] bundlePath];

    NSString *path = [mainBundleDirectory  stringByAppendingPathComponent:docName];

    NSURL *url = [NSURL fileURLWithPath:path];

    NSURLRequest *request = [NSURLRequest requestWithURL:url];

    self.myWebView.scalesPageToFit = YES;

    [self.myWebView loadRequest:request];

}

- (void)viewDidLoad

{

    [super viewDidLoad];

    self.view.backgroundColor = [UIColor whiteColor];

    self.myWebView = [[UIWebView alloc] initWithFrame:self.view.bounds];

    self.myWebView.scalesPageToFit = YES;

    [self.view addSubview:self.myWebView];

    //app中的html

    [self loadDocument:@"test.html"];

    }

- (void)viewDidUnload

{

    [super viewDidUnload];

    // Release any retained subviews of the main view.

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);

}

@end