如何在Web服务中初始化静态变量

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/init-static-variable")
public class StaticVariableInitializationServlet extends HttpServlet {

    private static final long serialVersionUID = 1L;

    // 静态变量的初始化
    private static String staticVariable;

    @Override
    public void init() throws ServletException {
        super.init();
        // 在Servlet初始化时设置静态变量的值
        staticVariable = "Static Variable Value";
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 在处理请求时使用静态变量
        response.getWriter().println("Static Variable: " + staticVariable);
    }

    @Override
    public void destroy() {
        super.destroy();
        // 在Servlet销毁时清理静态变量
        staticVariable = null;
    }
}