[Bug] [dinky-core] Bug title savepiont [Exception String index out of range 0]

[MsinChan]

Search before asking

• I had searched in the issues and found no similar issues.

What happened

Exception String index out of range 0

What you expected to happen

dinky/dinky-core/src/main/java/org/dinky/api/FlinkAPI.java

url = NetConstant.SLASH + route unspliced address

  private JsonNode post(String route, String body) {
      String url = NetConstant.SLASH + route;
      if (!address.startsWith(NetConstant.HTTP) && !address.startsWith(NetConstant.HTTPS)) {
          url = NetConstant.HTTP + url;
      }
      String res = HttpUtil.post(url, body, NetConstant.SERVER_TIME_OUT_ACTIVE);
      return parse(res);
  }

How to reproduce

trigger savepoint and cancel job

Anything else

No response

Version

1.2.0

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct

[suqingyang]

I'm experiencing the same issue as well.

[Pandas886]

I'm experiencing the same issue as well.