如何用golang仿springioc/aop实现蓝图效果
本篇内容主要讲解“如何用golang仿spring ioc/aop实现蓝图效果”,感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷,实用性强。下面就让小编来带大家学习“如何用golang仿spring ioc/aop实现蓝图效果”吧!
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Spring
Spring的主要特性: 1. 控制反转(Inversion of Control, IoC) 2. 面向容器 3. 面向切面(AspectOriented Programming, AOP) 源码gitee地址: https://gitee.com/ioly/learning.gooop 原文链接: https://my.oschina.net/ioly
目标
参考spring常用注解,使用golang编写“基于注解的静态代码增强器/生成器”
配置: ComponentScan,Configuration, Bean
Bean声明:Component, Service, Controller
Bean注入:Autowried
AOP注解:Before, After, Around, PointCut
子目标(Day 4)
前两天都是在整外围接口,没说清楚到底要搞啥
今天以@RestController为例,把项目目标理清楚:
以gin框架为基础,描述一个订单CRUD服务
以@RestController为例,手写增强前后的代码,描绘如何增强
增强前,应当尽可能简洁,降低框架侵入性
增强后,与框架很好的结合,把脏活累活默默干好
设计
OrderController: 订单服务控制器
OrderController_Enhanced:增强后的订单服务控制器
添加SetOrderService方法以便依赖注入
添加xxx_Enhanced方法,以集成到gin框架
添加RegisterRestController方法,以注册到Bean容器
添加init()方法,以便Bean容器引用
IOrderService:订单持久化服务接口
MockOrderService:订单持久化服务的实现,码略
dto/, entity/: 订单服务的实体类和数值类,码略
IBeanRegistry:bean注册表接口
IRestController:RESTFul控制器接口
IControllerRegistry:RESTFul控制器注册表及其默认实现
OrderController.go
订单服务控制器
package controller import ( "learning/gooop/spring/demo/order/dto" "learning/gooop/spring/demo/order/entity" "learning/gooop/spring/demo/order/service" ) // OrderController handles rest requests for CRUD orders // @RestController // @RequestMapping path=/order type OrderController struct { @Autowried orderService service.IOrderService } // Save create or update an order // @PostMapping func (me *OrderController) Save(head *entity.OrderHeadEntity, items []*entity.OrderItemEntity) error { return me.orderService.Save(head, items) } // View gets order and order items // @GetMapping func (me *OrderController) View(orderID int) (error, *dto.OrderDTO) { return me.orderService.Get(orderID) } // Query query order headers by custom conditions // @GetMapping func (me *OrderController) Query(customerID int, statusFlag int, dateFrom string, dateTo string, pageNO int, pageSize int) (error, []*dto.OrderHeadDTO) { return me.orderService.Query(customerID, statusFlag, dateFrom, dateTo, pageNO, pageSize) }
OrderController_Enhanced.go
增强后的订单服务控制器
添加SetOrderService方法以便依赖注入
添加xxx_Enhanced方法,以集成到gin框架
添加RegisterRestController方法,以注册到Bean容器
添加init()方法,以便Bean容器引用
package controller import ( "github.com/gin-gonic/gin" "learning/gooop/spring/demo/framework/bean/controller" "learning/gooop/spring/demo/order/dto" "learning/gooop/spring/demo/order/entity" "learning/gooop/spring/demo/order/service" "net/http" ) // OrderController_Enhanced handles rest requests for CRUD orders // RestController // RequestMapping path=/order type OrderController_Enhanced struct { // Autowired orderService service.IOrderService } // SetOrderService is auto generated setter method for injecting service.IOrderService into me.orderService func (me *OrderController_Enhanced) SetOrderService(it interface{}) { me.orderService = it.(service.IOrderService) } // Save create or update an order // PostMapping func (me *OrderController_Enhanced) Save(head *entity.OrderHeadEntity, items []*entity.OrderItemEntity) error { return me.orderService.Save(head, items) } // OrderController_Save_ParamsDTO is auto generated struct for wrapping parameters of OrderController.Save type OrderController_Save_ParamsDTO struct { Order *entity.OrderHeadEntity Items []*entity.OrderItemEntity } // View_Enhanced is the enhanced version of Save func (me *OrderController_Enhanced) Save_Enhanced(c *gin.Context) { r := new(OrderController_Save_ParamsDTO) e := c.BindJSON(r) if e != nil { c.JSON(http.StatusBadRequest, gin.H{"ok": false, "error": e.Error()}) return } e = me.Save(r.Order, r.Items) if e != nil { c.JSON(http.StatusInternalServerError, gin.H{"ok": false, "error": e.Error()}) return } c.JSON(http.StatusOK, gin.H{"ok": true}) } // View gets order and order items // GetMapping func (me *OrderController_Enhanced) View(orderID int) (error, *dto.OrderDTO) { return me.orderService.Get(orderID) } // View_Enhanced is the enhanced version of View func (me *OrderController_Enhanced) View_Enhanced(c *gin.Context) { id := c.GetInt("id") e, d := me.View(id) if e != nil { c.JSON(http.StatusInternalServerError, gin.H{"ok": false, "error": e.Error()}) } c.JSON(http.StatusOK, d) } // Query query order headers by custom conditions // GetMapping func (me *OrderController_Enhanced) Query(customerID int, statusFlag int, dateFrom string, dateTo string, pageNO int, pageSize int) (error, []*dto.OrderHeadDTO) { return me.orderService.Query(customerID, statusFlag, dateFrom, dateTo, pageNO, pageSize) } // OrderController_Query_ParamsDTO is auto generated struct for wrapping parameters of PagedQuery type OrderController_Query_ParamsDTO struct { CustomerID int StatusFlag int DateFrom string DateTO string PageNO int PageSize int } // Query_Enhanced is the enhanced version of PagedQuery func (me *OrderController_Enhanced) Query_Enhanced(c *gin.Context) { r := new(OrderController_Query_ParamsDTO) e := c.Bind(r) if e != nil { c.JSON(http.StatusBadRequest, gin.H{"ok": false, "error": e.Error()}) return } e, d := me.Query(r.CustomerID, r.StatusFlag, r.DateFrom, r.DateTO, r.PageNO, r.PageSize) if e != nil { c.JSON(http.StatusInternalServerError, gin.H{"ok": false, "error": e.Error()}) return } c.JSON(http.StatusOK, gin.H{"ok": true, "data": d}) } // RegisterRestController is auto generated to implements controller.IRestController interface func (me *OrderController_Enhanced) RegisterRestController(r *gin.Engine) { r.POST("/order/save", me.Save_Enhanced) r.GET("/order/view", me.View_Enhanced) r.GET("/order/query", me.Query_Enhanced) } // init is auto generated to register OrderController_Enhanced into controller.ControllerRegistry func init() { it := new(OrderController_Enhanced) controller.ControllerRegistry.Register(it) }
IOrderService.go
订单持久化服务接口
package service import ( "learning/gooop/spring/demo/order/dto" "learning/gooop/spring/demo/order/entity" ) type IOrderService interface { Save(head *entity.OrderHeadEntity, items []*entity.OrderItemEntity) error Get(orderID int) (error, *dto.OrderDTO) Query(customerID int, statusFlag int, dateFrom string, dateTo string, pageNO int, pageSize int) (error, []*dto.OrderHeadDTO) }
IBeanRegistry.go
bean注册表接口
package bean type IBeanRegistry interface { All() []interface{} }
IRestController.go
RESTFul控制器接口
package controller import "github.com/gin-gonic/gin" type IRestController interface { RegisterRestController(r *gin.Engine) }
IControllerRegistry.go
RESTFul控制器注册表及其默认实现
package controller import ( "github.com/gin-gonic/gin" "learning/gooop/spring/demo/framework/bean" "sync" ) type IControllerRegistry interface { bean.IBeanRegistry Register(it IRestController) Apply(r *gin.Engine) } type tDefaultControllerRegistry struct { rwmutex *sync.RWMutex items []IRestController } func (me *tDefaultControllerRegistry) All() []interface{} { me.rwmutex.RLock() defer me.rwmutex.RUnlock() all := make([]interface{}, len(me.items)) for i, it := range me.items { all[i] = it } return all } func (me *tDefaultControllerRegistry) Register(it IRestController) { me.rwmutex.Lock() defer me.rwmutex.Unlock() me.items = append(me.items, it) } func (me *tDefaultControllerRegistry) Apply(r *gin.Engine) { me.rwmutex.RLock() defer me.rwmutex.RLock() for _, it := range me.items { it.RegisterRestController(r) } } func newDefaultControllerRegistry() IControllerRegistry { return &tDefaultControllerRegistry{ new(sync.RWMutex), []IRestController{}, } } var ControllerRegistry = newDefaultControllerRegistry()
到此,相信大家对“如何用golang仿spring ioc/aop实现蓝图效果”有了更深的了解,不妨来实际操作一番吧!这里是创新互联网站,更多相关内容可以进入相关频道进行查询,关注我们,继续学习!
文章题目:如何用golang仿springioc/aop实现蓝图效果
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