使用HttpClientFeature更新响应正文内容

import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.concurrent.TimeUnit;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

public class HttpClientFeatureExample {

    public static void main(String[] args) throws IOException {
        // 创建一个自定义的 HttpClientFeature
        HttpClientFeature customFeature = new HttpClientFeature() {
            @Override
            public void process(HttpRequest request, HttpContext context) throws HttpException, IOException {
                // 在请求发送之前执行的逻辑
            }

            @Override
            public void process(HttpResponse response, HttpContext context) throws HttpException, IOException {
                // 在响应接收之后执行的逻辑
                HttpEntity entity = response.getEntity();
                if (entity != null) {
                    String responseBody = EntityUtils.toString(entity, StandardCharsets.UTF_8);
                    responseBody = responseBody.replace("oldText", "newText"); // 更新响应正文内容
                    HttpEntity newEntity = new StringEntity(responseBody, ContentType.APPLICATION_JSON);
                    response.setEntity(newEntity);
                }
            }
        };

        // 创建 HttpClient 实例，并注册自定义的 HttpClientFeature
        CloseableHttpClient httpClient = HttpClients.custom()
                .addInterceptorFirst(customFeature)
                .build();

        // 创建一个 GET 请求
        HttpGet request = new HttpGet("http://example.com/api");

        try (CloseableHttpResponse httpResponse = httpClient.execute(request)) {
            // 处理响应
            HttpEntity entity = httpResponse.getEntity();
            if (entity != null) {
                String responseBody = EntityUtils.toString(entity, StandardCharsets.UTF_8);
                System.out.println("Updated Response Body: " + responseBody);
            }
        }
    }
}