Encoded slash (/) with Spring RequestMapping path param gives HTTP 400

Question

This is not a duplicate referenced question, because it is Spring specific. Whoever added that (3 years after the fact!) didn\'t bother to read the question or comment

Answer 1

For spring boot application this worked for me..

Version 1 Add

org.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true

to your application.properties file

Version 2 run your spring boot application like this.

static void main(String[] args) {
    System.setProperty("org.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH", "true");
    SpringApplication.run this, args
}

Version 3 or run your java application with -Dorg.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true

This fixed %2F encoded slash path variable for me.

Answer 2

We just ran into this issue at my office, we did what was suggestion above from what Solubris said where you put it in a query param. The only additional requirement is that the data could have an '&' as well, which would mess up the query param. All we had to do is encode the text before it is sent in the URL and even '&' were filtered out.

Answer 3

This could be your answer: urlencoded Forward slash is breaking URL

I would suggest not putting that in the path, move it to a request param instead.

Work around:

You could change the RequestMapping to

@RequestMapping(value = "/ws/stuff/lookup/resourceId/**", method = RequestMethod.GET) 

and then parse the path variables manually from the request object.