苍穹外卖--用户端查询时，保存套餐缓存，管理端增删改起停售时，套餐缓存的清理业务实现

sky-server/pom.xml

@@ -86,12 +86,13 @@
             <artifactId>knife4j-spring-boot-starter</artifactId>
         </dependency>
 
-        <!--springDataRedis 起步依赖-->
+        <!--springDataRedis 起步依赖&缓存实现的起步依赖-->
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-data-redis</artifactId>
         </dependency>
 
+        <!--缓存框架springCache的依赖-->
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-cache</artifactId>

sky-server/src/main/java/com/sky/SkyApplication.java

@@ -3,11 +3,13 @@ package com.sky;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cache.annotation.EnableCaching;
 import org.springframework.transaction.annotation.EnableTransactionManagement;
 
 @SpringBootApplication
 @EnableTransactionManagement //开启注解方式的事务管理
 @Slf4j
+@EnableCaching //开启缓存注解功能
 public class SkyApplication {
     public static void main(String[] args) {
         SpringApplication.run(SkyApplication.class, args);

sky-server/src/main/java/com/sky/controller/admin/SetmealController.java

@@ -10,6 +10,7 @@ import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.cache.annotation.CacheEvict;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
@@ -33,6 +34,8 @@ public class SetmealController {
      */
     @PostMapping
     @ApiOperation("新增套餐")
+    //在客户端新增套餐时，要把对应分类的套餐缓存清理，在下一次查询时，获取最新的数据进行缓存
+    @CacheEvict(cacheNames = "setmealCache",key = "#setmealDTO.categoryId")
     public Result save(@RequestBody SetmealDTO setmealDTO) {
         setmealService.saveWithDish(setmealDTO);
         return Result.success();
@@ -57,6 +60,8 @@ public class SetmealController {
      */
     @DeleteMapping
     @ApiOperation("批量删除套餐")
+    //客户端批量删除套餐数据时，可能删除多个分类下的套餐，为了避免多余的查询操作，直接将套餐的所有缓存直接清理
+    @CacheEvict(cacheNames = "setmealCache",allEntries = true)
     public Result delete(@RequestParam List<Long> ids){
         setmealService.deleteBatch(ids);
         return Result.success();
@@ -83,6 +88,8 @@ public class SetmealController {
      */
     @PutMapping
     @ApiOperation("修改套餐")
+    //客户端修改套餐数据时，可能修改分类的类型，为了避免多余的查询操作，直接将套餐的所有缓存直接清理
+    @CacheEvict(cacheNames = "setmealCache",allEntries = true)
     public Result update(@RequestBody SetmealDTO setmealDTO) {
         setmealService.update(setmealDTO);
         return Result.success();
@@ -96,6 +103,8 @@ public class SetmealController {
      */
     @PostMapping("/status/{status}")
     @ApiOperation("套餐起售停售")
+    //客户端起售停售套餐时，没有传递套餐的分类id，为了避免多余的查询操作，直接将套餐的所有缓存直接清理
+    @CacheEvict(cacheNames = "setmealCache",allEntries = true)
     public Result startOrStop(@PathVariable Integer status, Long id) {
         setmealService.startOrStop(status, id);
         return Result.success();

sky-server/src/main/java/com/sky/controller/user/SetmealController.java

@@ -8,6 +8,7 @@ import com.sky.vo.DishItemVO;
 import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.cache.annotation.Cacheable;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -29,6 +30,7 @@ public class SetmealController {
      */
     @GetMapping("/list")
     @ApiOperation("根据分类id查询套餐")
+    @Cacheable(cacheNames = "setmealCache",key = "#categoryId") //redis的key  setmealCache::#categoryId
     public Result<List<Setmeal>> list(Long categoryId) {
         Setmeal setmeal = new Setmeal();
         setmeal.setCategoryId(categoryId);