js调用servlet方法

$.ajax({
    url: "YourServletURL", // Servlet 的 URL
    type: "POST", // 请求类型
    data: { key1: "value1", key2: "value2" }, // 发送的数据
    success: function(response) {
        // 成功回调函数
        console.log("服务器响应:", response);
    },
    error: function(xhr, status, error) {
        // 错误回调函数
        console.error("请求失败:", status, error);
    }
});

@WebServlet("/YourServletURL")
public class YourServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String key1 = request.getParameter("key1");
        String key2 = request.getParameter("key2");
        
        // 处理数据...
        
        response.setContentType("application/json");
        response.setCharacterEncoding("UTF-8");
        PrintWriter out = response.getWriter();
        out.print("{\"status\":\"success\"}");
        out.flush();
    }
}