我们定义了一个名为ChartGPTConfig的类，它有两个私有成员变量apiKey和apiUrl，分别表示ChartGPT的API密钥和API URL。

public class ChartGPTConfig {private final String apiKey;private final String apiUrl;public ChartGPTConfig(String apiKey, String apiUrl) {this.apiKey = apiKey;this.apiUrl = apiUrl;}public String getApiKey() {return apiKey;}public String getApiUrl() {return apiUrl;}
}

简单调用示例：

public class ChartGPTExample {public static void main(String[] args) {// 创建ChartGPTConfig对象，设置API密钥和API URLChartGPTConfig config = new ChartGPTConfig("YOUR_API_KEY", "https://api.chartgpt.com/v1/generate");String query = "What is the population of China?"; // 替换为您的查询try {// 调用ChartGPT APIString response = callChartGPTAPI(config, query);System.out.println("Response: " + response);} catch (IOException e) {e.printStackTrace();}}private static String callChartGPTAPI(ChartGPTConfig config, String query) throws IOException {// 创建OkHttpClient实例OkHttpClient client = new OkHttpClient();// 构建API请求URLString url = config.getApiUrl() + "?query=" + query;// 创建HTTP请求Request request = new Request.Builder().url(url).addHeader("Authorization", "Bearer " + config.getApiKey()).build();// 发送HTTP请求并获取响应try (Response response = client.newCall(request).execute()) {return response.body().string();}}
}

示例中使用了OkHttp库来发送HTTP请求，可以通过Maven或Gradle将依赖添加。

Maven引入OkHttp依赖:

<dependency><groupId>com.squareup.okhttp3</groupId><artifactId>okhttp</artifactId><version>4.9.1</version>
</dependency>

Gradle引入OkHttp依赖:

// 其他配置
dependencies {// OkHttpimplementation 'com.squareup.okhttp3:okhttp:4.9.1'
}