PlayFramework completely implements an APP (7)

1. Add verification code

application Controller add captcha()

public static void captcha() {
Images.Captcha captcha = Images.captcha();
renderBinary(captcha);
}

　

Add Route

GET /captcha Application.captcha

Visit http://localhost:9000/captcha The verification code image has been implemented. What needs to be done now is to verify that the input information is consistent with the verification code

Modify the captcha() method

public static void captcha(String id) {

Images.Captcha captcha = Images.captcha();

String code = captcha.getText("#E4EAFD");

Cache.set(id, code, "10mn");

renderBinary(captcha);

}


　

Modify the show() method

public static void show(Long id) {

Post post = Post.findById(id);

String randomID = Codec.UUID();

render(post, randomID);

}

　

Modify the show.html page

Add the verification code image and verification control below the Comment

for="content">Your message:

" " ;p>

Please type the code below:

 
 
                                                                 Verify

Modify postComment method

public static void postComment(
Long postId,
@Required(message="Author is required") String author,
@Required(message="A message is required") String content,
@ Required(message="Please type the code") String code,
String randomId) {
Post post = Post.findById(postId);
validation.equals(code, Cache.get(randomId)).message("Invalid code . Please type it again");

if(validation.hasErrors()) {

render("Application/show.html", post);

}

post.addComment(author, content); Flash.success( "Thanks for posting %s", author);

Cache.delete(randomId);

show(postId);
}




Modify the show.html page

#{ifErrors}
error">
                                       ${errors[0]}                                                                                                                                  Net (www.php.cn)!