我将如何在 java 中编写此 python 代码

Question

i am trying to get json data from an api in java, i know how to do this with python but i am doing a project in java and i'm clueless, i don't know where to start.

Python Code:

url2 = f"https://api.hypixel.net/status?key={APIKEY}&uuid=" + returnUuid
res = requests.get(url2)
data = res.json()
    if data["session"] is None:
        return None

onlinestatus = (data["session"]["online"])

    if onlinestatus is False:
        theNewLineString = "\n"
        lastLogout_string = "LastLogout: "
        log_out = int(data2["player"]["lastLogout"])

return str("Online: ") + "`" + "False"

How would i do that in java?

Any help is appreciated!

Answer 1

It looks like your main problem is finding a way to obtain information from a URL in java. If this is the case:

You'll want to use Java's URLConnection class. You can call:

URL url2 = new URL("https://www.google.com");
URLConnection urlConn = url2.openConnection();
InputStreamReader in = new InputStreamReader(urlConn.getInputStream());
BufferedReader buff = new BufferedReader(in);

You can then scrape through the data using methods like String line = buff.readLine();

If you're looking to access specific contents on the webpage, you'll need to scrape the html and this can be a bit complicated. APIs like DJNativeSwing make this a lot easier to do (but require you to download a JAR and add it to your referenced libraries).

Answer 2

1.Add below dependency into pom.xml

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>

2. You have to use RestTemplate or WebClient for API calls.

 RestTemplate restTemplate=new ReastTemplate(); restTemplate.getForObject("https://api.hypixel.net/status?key={APIKEY}&uuid="+ returnUuid);

In the above case, you can get a response from a particular service.