依赖查找(API)

Vona 还提供了一组 API，使我们可以更加灵活的查找 bean 实例

_getBean

1. 基于 Bean class 查找

import { ServiceMenu } from 'vona-module-home-base';

class ControllerMenu {
  async test() {
    const serviceMenu = this.bean._getBean(ServiceMenu);
  }
}

• this.bean === this.app.bean，就是全局 ioc 容器

2. 基于 Bean 标识查找

class ControllerMenu {
  async test() {
    const serviceMenu = this.bean._getBean('home-base.service.menu');
  }
}

3. 查找全局 Bean

import { BeanJwt } from 'vona-module-a-jwt';

class ControllerMenu {
  async test() {
    const beanJwt1 = this.bean._getBean(BeanJwt);
    const beanJwt2 = this.bean._getBean('jwt');
    const beanJwt3 = this.bean.jwt;
    // beanJwt1 === beanJwt2 === beanJwt3
  }
}

4. 请求级别

如果我们要创建请求级别的 Bean 实例，那么，只需要调用 ctx 容器的_getBean方法

class ControllerMenu {
  async test() {
    const serviceMenu1 = this.ctx.bean._getBean(ServiceMenu);
    const serviceMenu2 = this.ctx.bean._getBean('home-base.service.menu');
    // serviceMenu1 === serviceMenu2
  }
}

_newBean

1. 基于 Bean class 创建新实例

import { ServiceMenu } from 'vona-module-home-base';

class ControllerMenu {
  async test() {
    const serviceMenu = this.bean._newBean(ServiceMenu);
  }
}

2. 基于 Bean 标识创建新实例

class ControllerMenu {
  async test() {
    const serviceMenu = this.bean._newBean('home-base.service.menu');
  }
}

3. 创建全局 Bean 的新实例

import { BeanJwt } from 'vona-module-a-jwt';

class ControllerMenu {
  async test() {
    const beanJwt1 = this.bean._newBean(BeanJwt);
    const beanJwt2 = this.bean._newBean('jwt');
  }
}