我想从客户端发送同步POST请求。根据文档,我们可以使用'async'命名参数:
https://www.dartlang.org/articles/json-web-service/#saving-objects-on-the-server
var url = "http://127.0.0.1:8080/programming-languages";
request.open("POST", url, async: false);
但是上面的示例引发了以下语法错误:
关键字'async','await'和'yield'不能用作异步或生成器函数中的标识符。
如何发送同步POST请求?
更新(5月27日,20:23)
我找到了解决此问题的解决方法:
Future<String> deleteItem(String id) async {
final req = new HttpRequest()
..open('POST', 'server/controller.php')
..send({'action': 'delete', 'id': id});
// wait until the request have been completed
await req.onLoadEnd.first;
// oh yes
return req.responseText;
}
但我不喜欢上述解决方案,因为它看起来不够优雅。
答案 0 :(得分:0)
答案 1 :(得分:0)
解决方案是使用postFormData()
代替send()
。例如:
final req = await HttpRequest
.postFormData(url, {'action': 'delete', 'id': id});
return req.responseText;
答案 2 :(得分:0)
Future<String> deleteItem(String id) async {
final req = new HttpRequest()
..open('POST', 'server/controller.php')
..send({'action': 'delete', 'id': id});
// wait until the request have been completed
await req.onLoadEnd.first;
// oh yes
return req.responseText;
}
这个是重点,有时你需要“PUT”或“DELETE”