如何将javascript对象传递给Java Servlet

var data = {
  name: "John",
  age: 25,
  email: "john@example.com"
};

fetch('/servlet-url', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json'
  },
  body: JSON.stringify(data)
})
.then(response => {
  // 处理响应
})
.catch(error => {
  // 处理错误
});

import com.google.gson.Gson;

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
  // 获取请求数据
  BufferedReader reader = request.getReader();
  StringBuilder requestBody = new StringBuilder();
  String line;
  while ((line = reader.readLine()) != null) {
    requestBody.append(line);
  }

  // 解析JSON数据为Java对象
  Gson gson = new Gson();
  YourObject yourObject = gson.fromJson(requestBody.toString(), YourObject.class);

  // 处理接收到的数据
  // ...

  // 返回响应（可选）
  response.setContentType("application/json");
  response.getWriter().write("Response data");
}