State
当前上下文的状态管理, 仅对当前请求有效
只提供 get 与 set 方法
k.state.get(key: string): any
k.state.set(key: string, value: any): void
示例
var obj = {name: "myname", fieldtwo: "value"};
k.state.set("key", obj);
// in ohter page
var value = k.state.get("key");
k.response.write(value);