在用eggjs寫用戶登錄, 用戶登錄成功后，在session里放入user

async login() {
    const ctx = this.ctx;
    const { username, password } = ctx.request.body;
    const user = await this.service.home.login(username, password);
    ctx.session.user = user;
    const { id, schemastr } = user || {};
    console.log(ctx.session);
    ctx.body = {
      data: {
        id,
        schemastr,
        username,
      },
      message: 'success',
    };
 }
 

問題是,在設(shè)置session完之后，其它c(diǎn)ontroller函數(shù)的session都為空對象：

async asyncData() {
    const ctx = this.ctx;
    const { id, schemastr } = ctx.request.body;
    this.service.home.asyncData(id, schemastr);
    console.log(ctx.session); // => {}
    ctx.body = {
      data: 200,
      message: 'success',
    };
 }
 

請問大家是怎么回事？