无法通过java触发Jenkins构建

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;

import java.io.IOException;

public class JenkinsBuildTrigger {
    public static void main(String[] args) {
        String jenkinsUrl = "http://jenkins.example.com";
        String jobName = "my-job";
        
        HttpClient httpClient = HttpClientBuilder.create().build();
        HttpPost httpPost = new HttpPost(jenkinsUrl + "/job/" + jobName + "/build");
        
        // 设置请求头
        httpPost.setHeader("Content-Type", ContentType.APPLICATION_FORM_URLENCODED.getMimeType());
        
        try {
            // 发送请求
            HttpResponse response = httpClient.execute(httpPost);
            
            // 获取响应内容
            HttpEntity entity = response.getEntity();
            String responseText = EntityUtils.toString(entity);
            
            // 处理响应
            if (response.getStatusLine().getStatusCode() == 201) {
                System.out.println("构建触发成功");
            } else {
                System.out.println("构建触发失败：" + responseText);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}