HttpPost如何设置超时时间

可以使用 `RequestConfig` 对象来设置 `HttpPost` 的超时时间。以下是示例代码：

import org.apache.http.HttpEntity;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.io.IOException;

public class HttpClientExample {
    public static void main(String[] args) {
        // 创建 HttpClient 实例
        CloseableHttpClient httpClient = HttpClients.createDefault();
        
        // 创建 HttpPost 请求
        HttpPost httpPost = new HttpPost("http://example.com/api");
        
        // 设置请求头
        httpPost.setHeader("Content-Type", "application/json");
        
        // 设置请求体
        String requestBody = "{\"key1\":\"value1\", \"key2\":\"value2\"}";
        StringEntity requestEntity = new StringEntity(requestBody, "UTF-8");
        httpPost.setEntity(requestEntity);
        
        // 设置超时时间
        RequestConfig requestConfig = RequestConfig.custom()
                .setConnectTimeout(5000) // 连接超时时间
                .setSocketTimeout(5000) // 读取超时时间
                .build();
        httpPost.setConfig(requestConfig);
        
        try {
            // 发送请求并获取响应
            CloseableHttpResponse response = httpClient.execute(httpPost);
            try {
                // 处理响应
                HttpEntity entity = response.getEntity();
                if (entity != null) {
                    String responseString = EntityUtils.toString(entity, "UTF-8");
                    System.out.println(responseString);
                }
            } finally {
                response.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                httpClient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

在上面的示例代码中，通过 `RequestConfig` 对象设置了连接超时时间和读取超时时间，分别为 5000 毫秒。你可以根据实际需求调整超时时间的数值。