Spray: routing - understand the difference between path and pathPrefix

path is a final path, while pathPrefix can be subsequently combined with other path segments using the DSL.

If you want to match exactly /hello you should use path("hello").

pathPrefix is convenient in cases like

pathPrefix("hello") {
  path("foo") {
    complete("foo")
  } ~
  path("bar") {
    complete("bar")
  }
}

which will match /hello/foo and /hello/bar.

That having being said, I suspect the error you're getting is simply the scala parser not getting along with the DSL.

Can you try moving the ~ on the same line as the closing brace? I think the parser is inferring a semicolon, so it's really understanding that piece of code as 

pathPrefix("hello") {
    get {
      respondWithMediaType(`text/html`) { // XML is marshalled to `text/xml` by default, so we simply override here
        complete {
          <html>
            <body>
              <h1>Say hello to <i>spray-routing</i> on <i>spray-can</i>!</h1>
            </body>
          </html>
        }
      }
    }
  };
  ~
  pathPrefix("testjson") {
    get {
      entity(as[TestC]) { c =>
        respondWithMediaType(`application/json`) {
          complete(c)
        }
      }
    }
  }

In docs :

path(x): is equivalent to rawPathPrefix(slash().concat(segment(x)).concat(pathEnd())). It matches a leading slash followed by x and then the end.

pathPrefix(x): is equivalent to rawPathPrefix(slash().concat(segment(x))). It matches a leading slash followed by x and then leaves a suffix unmatched.

Tags:

Scala

Spray

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