Comment implémenter un mécanisme de traitement asynchrone des données de formulaire en Java ?

import java.io.IOException;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadPoolExecutor;

import javax.servlet.AsyncContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(urlPatterns = "/formHandler", asyncSupported = true)
public class FormHandlerServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    private ThreadPoolExecutor executor;

    @Override
    public void init() throws ServletException {
        executor = (ThreadPoolExecutor) Executors.newFixedThreadPool(10);
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 设置请求为异步处理
        AsyncContext asyncContext = request.startAsync(request, response);
        // 提交任务到线程池中进行异步处理
        executor.execute(new FormHandlerTask(asyncContext));
    }

    @Override
    public void destroy() {
        executor.shutdown();
    }
}

import javax.servlet.AsyncContext;

public class FormHandlerTask implements Runnable {
    private final AsyncContext asyncContext;

    public FormHandlerTask(AsyncContext asyncContext) {
        this.asyncContext = asyncContext;
    }

    @Override
    public void run() {
        // 获取表单数据
        String username = asyncContext.getRequest().getParameter("username");
        String password = asyncContext.getRequest().getParameter("password");
        
        // 进行表单数据处理逻辑
        
        // 例如，模拟处理时间
        try {
            Thread.sleep(5000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        
        // 响应结果
        asyncContext.getResponse().setStatus(HttpServletResponse.SC_OK);
        asyncContext.getResponse().getWriter().write("Form data processed successfully!");

        // 完成异步处理
        asyncContext.complete();
    }
}

<servlet>
    <servlet-name>FormHandlerServlet</servlet-name>
    <servlet-class>com.example.FormHandlerServlet</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>FormHandlerServlet</servlet-name>
    <url-pattern>/formHandler</url-pattern>
</servlet-mapping>