Java

OpenAI (ChatGPT) Create Chat Completion

See more OpenAI ChatGPT Examples

Shows how to create a model response for a given chat conversation. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Http;
import com.chilkatsoft.chilkat2.HttpResponse;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.StringBuilder;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example assumes the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        Http http = new Http();

        // Implements the following CURL command:

        // curl https://api.openai.com/v1/chat/completions \
        //   -H "Content-Type: application/json" \
        //   -H "Authorization: Bearer $OPENAI_API_KEY" \
        //   -d '{
        //     "model": "gpt-3.5-turbo",
        //     "messages": [{"role": "user", "content": "Hello!"}]
        //   }'

        // Use the following online tool to generate HTTP code from a CURL command
        // Convert a cURL Command to HTTP Source Code

        // Use this online tool to generate code from sample JSON:
        // Generate Code to Create JSON

        // The following JSON is sent in the request body.

        // {
        //   "model": "gpt-3.5-turbo",
        //   "messages": [
        //     {
        //       "role": "user",
        //       "content": "Hello!"
        //     }
        //   ]
        // }

        JsonObject json = new JsonObject();
        json.updateString("model", "gpt-3.5-turbo");
        json.updateString("messages[0].role", "user");
        json.updateString("messages[0].content", "Hello!");

        // Adds the "Authorization: Bearer $OPENAI_API_KEY" header.
        // This is NOT a real key.  Change the "sk-vi...." to your own key.
        http.setAuthToken("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");
        http.setRequestHeader("Content-Type", "application/json");

        HttpResponse resp = new HttpResponse();
        try {
            http.httpJson("POST", "https://api.openai.com/v1/chat/completions", json, "application/json", resp);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        StringBuilder sbResponseBody = new StringBuilder();
        resp.getBodySb(sbResponseBody);

        JsonObject jResp = new JsonObject();
        jResp.loadSb(sbResponseBody);
        jResp.setEmitCompact(false);

        System.out.println("Response Body:");
        System.out.println(jResp.emit());

        int respStatusCode = resp.getStatusCode();
        System.out.println("Response Status Code = " + respStatusCode);
        if (respStatusCode >= 400) {
            System.out.println("Response Header:");
            System.out.println(resp.getHeader());
            System.out.println("Failed.");
            return;
        }

        // Sample JSON response:
        // (Sample code for parsing the JSON response is shown below)

        // {
        //   "id": "chatcmpl-123",
        //   "object": "chat.completion",
        //   "created": 1677652288,
        //   "choices": [
        //     {
        //       "index": 0,
        //       "message": {
        //         "role": "assistant",
        //         "content": "\n\nHello there, how may I assist you today?"
        //       },
        //       "finish_reason": "stop"
        //     }
        //   ],
        //   "usage": {
        //     "prompt_tokens": 9,
        //     "completion_tokens": 12,
        //     "total_tokens": 21
        //   }
        // }

        // Sample code for parsing the JSON response...
        // Use the following online tool to generate parsing code from sample JSON:
        // Generate Parsing Code from JSON

        int index = 0;
        String Role = "";
        String Content = "";
        String finish_reason = "";

        String id = jResp.stringOf("id");
        String v_object = jResp.stringOf("object");
        int created = jResp.intOf("created");
        int Prompt_tokens = jResp.intOf("usage.prompt_tokens");
        int Completion_tokens = jResp.intOf("usage.completion_tokens");
        int Total_tokens = jResp.intOf("usage.total_tokens");
        int i = 0;
        int count_i = jResp.sizeOfArray("choices");
        while (i < count_i) {
            jResp.setI(i);
            index = jResp.intOf("choices[i].index");
            Role = jResp.stringOf("choices[i].message.role");
            Content = jResp.stringOf("choices[i].message.content");
            finish_reason = jResp.stringOf("choices[i].finish_reason");
            i = i + 1;
        }
    }
}