第一步：一个科学友好的上网工具，开启全局代理；
第二步：一个注册好的ChatGPT账号，且在个人设置里面生成apiKey：https://platform.openai.com/account/api-keys；
第三步：在发起HTTP请求（openConnection() 或者 openStream()）之前，加上以下2行代码：
1 System.setProperty("proxyHost", PROXY_HOST); // PROXY_HOST：代理的IP地址
2 System.setProperty("proxyPort", PROXY_PORT); // PROXY_PORT：代理的端口号
代理的IP地址、代理的端口号：
第四步：贴上全部代码：
1 package com.xiaobing.springcloud.util;
2
3 import java.io.BufferedReader;
4 import java.io.IOException;
5 import java.io.InputStreamReader;
6 import java.net.HttpURLConnection;
7 import java.net.URL;
8
9 public class OpenAIGPT3Example {
10
11 public static void main(String[] args) throws IOException {
12 System.setProperty("proxyHost", "127.0.0.1"); // 代理的IP地址
13 System.setProperty("proxyPort", "7890"); // 代理的端口号
14
15 String apiEndpoint = "https://api.openai.com/v1/engines/text-davinci-003/completions";
16 String apiKey = "sk-**********"; // 这里是第二步生成的apiKey
17 String prompt = "'你在哪里？'翻译成英文";
18 int maxTokens = 150;
19
20 URL url = new URL(apiEndpoint);
21 HttpURLConnection con = (HttpURLConnection) url.openConnection();
22 con.setRequestMethod("POST");
23
24 // 设置HTTP请求头
25 con.setRequestProperty("Content-Type", "application/json");
26 con.setRequestProperty("Authorization", "Bearer " + apiKey);
27
28 // 设置HTTP请求体
29 String requestBody = "{\"prompt\": \"" + prompt + "\", \"max_tokens\": " + maxTokens + "}";
30 con.setDoOutput(true);
31 con.getOutputStream().write(requestBody.getBytes());
32
33 // 发送HTTP请求并读取响应
34 int responseCode = con.getResponseCode();
35 BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
36 String response = "";
37 String inputLine;
38 while ((inputLine = in.readLine()) != null) {
39 response += inputLine;
40 }
41 in.close();
42
43 // 处理响应
44 System.out.println("Response code: " + responseCode);
45 System.out.println("Response body: " + response);
46 }
47
48 }
第五步：执行代码响应结果：
1 Response code: 200
2 Response body: {"id":"cmpl-8G0ApukM5c0oCMdKs9hVk8b4IYboY","object":"text_completion","created":1684048271,"model":"text-davinci-003","choices":[{"text":"：\n\nWhere are you?","index":0,"logprobs":null,"finish_reason":"stop"}],"usage":{"prompt_tokens":26,"completion_tokens":9,"total_tokens":35}}
设置代理参考链接：https://www.cnblogs.com/memory4young/p/java-proxy-property.html
