前端javascript发起post请求java端提供服务参数分别为ListA和bizIDA包含fileid和filename属性请分别给出两端代码

前端javascript发起post请求：

const data = {
  list: [
    { fileid: 1, filename: 'file1' },
    { fileid: 2, filename: 'file2' },
    { fileid: 3, filename: 'file3' },
  ],
  bizID: '123456',
};

fetch('/api/upload', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify(data),
}).then(response => {
  console.log(response);
}).catch(error => {
  console.error(error);
});

Java端提供服务：

@PostMapping("/upload")
public void upload(@RequestBody Map<String, Object> data) {
  List<Map<String, Object>> list = (List<Map<String, Object>>) data.get("list");
  String bizID = (String) data.get("bizID");
  
  List<A> aList = new ArrayList<>();
  for (Map<String, Object> item : list) {
    A a = new A();
    a.setFileid((Integer) item.get("fileid"));
    a.setFilename((String) item.get("filename"));
    aList.add(a);
  }
  
  // TODO: 处理业务逻辑
}
``