Java 上传jar包的代码

以下是Java上传jar包的示例代码：

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class JarUploader {
    public static void main(String[] args) {
        String uploadUrl = "http://your-upload-url.com/upload"; // 上传URL
        String filePath = "/path/to/your/jar/file.jar"; // 要上传的jar文件路径

        File file = new File(filePath);
        try {
            InputStream inputStream = new FileInputStream(file);

            URL url = new URL(uploadUrl);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("POST");
            connection.setDoOutput(true);
            connection.setRequestProperty("Content-Type", "application/java-archive");
            connection.setRequestProperty("Content-Length", String.valueOf(file.length()));

            byte[] buffer = new byte[1024];
            int len;
            while ((len = inputStream.read(buffer)) > 0) {
                connection.getOutputStream().write(buffer, 0, len);
            }

            int responseCode = connection.getResponseCode();
            if (responseCode == HttpURLConnection.HTTP_OK) {
                System.out.println("Jar file uploaded successfully!");
            } else {
                System.out.println("Failed to upload jar file. Response code: " + responseCode);
            }

            inputStream.close();
            connection.disconnect();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

在上传时，需要设置请求方法为`POST`，并指定上传文件的MIME类型为`application/java-archive`。同时需要设置请求头中的`Content-Length`为文件大小。

以上代码仅供参考，实际使用时需要根据自己的需求进行适当修改。