Recently tried deploying my Spring + React app to Heroku but I'm having issues.. What I did: Built the React app, copied the contents of the /build directory into src/main/resource/static folder of Spring. Then when I opened up localhost:8080 in my browser, I got the Spring Security default login page. I logged in with an user I had from before and when I went to localhost:8080 again, my react app loaded just fine.
So then I added this .antMatchers( "/", "/api/test", "/api/me", "/api/register").permitAll() to my code, in order to remove the login page from my front end, and when I opened localhost:8080 now, I get a blank page. But when I log in, the React page again loads fine. I tried the following: putting the react app files into the /templates folder, no luck. I tried creating a /webapp folder and putting the files in there, no luck. I tried adding server.servlet.context-path=/ to my application.properties, no luck. I tried creating a redirect controller as so:
#Controller
public class RedirectController {
#GetMapping("/")
public String getHomePage() {
return "index.html";
}
}
Also no luck. I tried changing my Security setup to this: .antMatchers( "/**", "/api/test", "/api/me", "/api/register").permitAll() and that actually worked, but then the problem was that all my endpoints were exposed, which is a big no-no.
Also I just noticed that my index.html file is getting served properly, but it is not loading and javascript or any other React file.. What is going on??
Oh wow.. Okay I found the solution, Spring Security was actually blocking access to all my static content except my index.html. All that needs to be done is add the /static/** in here: .antMatchers( "/", "/static/**", "/api/test", "/api/me", "/api/register").permitAll() to let everyone access the static folder. Will probably need to do the same for any other static file that you have like images which aren't in the /static/ folder.
Related
I upload a react app to Netlify, it uploads fine, but when I visit the site, it´s all blank, the index.html is working fine, but there is nothing inside the div with the "root" id
Here are the buils settings
here are the enviorment settings
here is the package json
and i also include the redirects file in the public folder
Can you help me to make the react app works
Create a file named _redirects to the public folder of App with the following content:
/* /index.html 200
Sometimes work!
I'm new in react app development, I just build my practice app and deployed it through Netlify. I can visit my app and everything is fine till I refresh my window. Refreshing the window comes with an error page not found. what should I do to solve this problem?
You may need to look at providing a _redirects file in your root directory. See https://docs.netlify.com/routing/redirects/
For example,
/* /index.html 200
As cra is single page application, you need server setting to redirect everytime to index.html,
You might want to check this link
https://www.netlify.com/blog/2020/04/07/creating-better-more-predictable-redirect-rules-for-spas/
When running my spring app from my IDE and running the React app from within VSCode, everything worked perfectly. I used the build script to build my React project, and then put the output into my /static folder of Spring. Then I used mvn clean install to build the .jar file. After running the entire app from the .jar file, I can access my homepage with localhost:5000. I can also use my navbar links to access different parts of the website, like the Home page and the About page... But if I try to manually enter the url localhost:5000/about I get a 404 Not found error.. What am I doing wrong?
My guess is that your Spring (webmvc?) application is not configured to listen to different URLs other than /. And while it may seem as if the navbar successfully redirects to http://localhost:5000/about, in reality the single page application uses JavaScript client-side routing to change the URL in the browser, unload the currently rendered page, and load another page.
If you are indeed using Spring MVC, you could (among other options) modify your Spring static resource configuration, modify your #RequestMapping to listen to multiple endpoints, or use a ViewControllerRegistry.
How is routing handled in a built react app?
Specifically, in a development environment, we can simply hit <host>:<port>/<some-path> and the corresponding component is loaded, but once the app is built, we get a bunch of static files and single index.html file, which are then served by some server.
Now, upon hitting the url <server-host>:<server-port>, the app works as intended, but upon entering the path, say <server-host>:<server-port>/<component-path>, a 404 error is returned.
If there is, say a button, upon clicking which, the same /<component-path> is to be redirected, the app works, but then again upon refreshing that page, 404 error occurs.
How can this be solved? What is the correct way to serve such apps having many components at different routes?
approach1:(recommended)
In server config you should point all urls ( http://ipaddress:port/<* any url pattern>) to index.html of react-app . this is known as fallback-mechanism.
And when any request comes,index.html of React app will take care of that automatically because it is single page application.
approach2:
Use HashRouter in React app. So You will not have to configure anything.
Depending on which server you are deploying to, you should redirect all errors to the index.html look for the configuration maybe htaccess or for example if it an AWS S3 bucket you just specify the error page to the same index.html file that is served. Then you handle actual error in your code using a routing library like maybe react-router-dom to take care of actual error. Your failure is because in normal circumstances in a static host when you provide a URL like <server-port>/<component-path> the assumption the server makes is that there is a folder with name component-path in your root directory which has an index file from where to load and display but in the case of React single page application, everything is managed by the index.html. So every request has to pass via the index.html
I have a React application created by create-react-app. The app works fine, but I have run into a problem
I need to test som ad things on a plain html site, no additional React code. The problem I have is that the ads.txt tags need to be crawled by Google, which can take up to 24 hours on a new page/URL, time that I don't really have.
So I did the following. In my repo under /public folder I added a folder /ad-test with an index.html inside. When I serve it locally using npm start and go to http://localhost:3000/ad-test, it works fine.
Great, I thought and deployed it to the production environment, but now when I try to go to http://[my-site]/ad-test or http://[my-site]/yo-test/index.html it does not work (I get the React 404 site that I created).
I looked here and if I understand correctly, it is not possible to do it the way that I tried since the build stage will not include the public folder. Am I correct in this?
Any idea how to solve this?
EDIT:
I have a good knowledge of React and React Router in general, the app already uses <Switch><Route ... /></Switch> with a catch-all route directing to Not Found Component and the bottom.
The problem I have is that we include some ad scripts from an ad provider. The ads are not displayed in the application (adblockers totally removed from browser etc.) and the provider thinks that we have made errors in the React code.
We don't think that we made any errors (the ads were displayed fine in our test environment but not in prod) and we have to prove that React is not to blame for the ads not showing.
To do this we created a static HTML file with all ads hardcoded, no React components or other things that might disturb. BUT, because of ads and Google crawlers and ads.txt, we need to have the static test page under the same domain as our main page/application.
This is why I ask if it is possible to somehow add a static HTML that can be reached from http://my.page/test-page.html without being "intercepted" by react router, i.e. it exists outside React but on the same server.
When you use react by create-react-app, it means you are building a single-page application.
What this means is that after running npm run build you will have a build folder with only one html file called index.html in that fold.
This index.html does not know and has no relationship with your added 'index.html' in ad-test folder.
If you want your ad-test html to be recognised by react, you need to make it a component of app.js and use react-router to give it a pathname.
It is very simple.
First, install react-router-dom;
Second, set up react-router-dom;refer to https://reacttraining.com/react-router/web/guides/quick-start
Third, give your add-test component a pathname.Your js code should look something like this:
<Route path='/ad-test' component={AdTest} />
IMPORTANT:
After you deploy your app, always remember you just built a single-page application.
You only have one html in your app.
Please make sure when you test your app after you deployed you must tell your service provider that no matter what pathname a user inputs in the address bar you always redirect it to the index.html
The build stage includes the public folder:
If you have a picture in the public folder, and this picture was imported to other components it will be shown after you run npm run build
Hope it helps.
Have you tried playing with webserver configurations? It is usually setup to redirect all traffic to index.html. Maybe exclude your static html path from redirection?
Place test-page.html in public folder like
public/path-to-static-html/test-page.html
Configure webserver for
directing all traffic to index.html EXCEPT /path-to-static-html which
will be directed to test-page.html.
For example, in case of Apache
you will be setting the DirectoryIndex directive.