js提交数据到servlet

document.getElementById('submitButton').addEventListener('click', function() {
    const formData = new FormData(document.getElementById('myForm'));

    fetch('/your-servlet-url', {
        method: 'POST',
        body: formData
    })
    .then(response => response.json())
    .then(data => {
        console.log('Success:', data);
    })
    .catch((error) => {
        console.error('Error:', error);
    });
});

import java.io.IOException;
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("/your-servlet-url")
public class YourServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // 处理 POST 请求数据
        String param1 = request.getParameter("param1");
        String param2 = request.getParameter("param2");

        // 进行业务逻辑处理...

        // 返回响应
        response.setContentType("application/json");
        response.setCharacterEncoding("UTF-8");
        response.getWriter().write("{\"status\":\"success\"}");
    }
}

response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS");
response.setHeader("Access-Control-Allow-Headers", "Content-Type");