苍穹外卖--springCache-@CachePut使用

springcache-demo - inmind/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.7.3</version>
+        <relativePath/>
+    </parent>
+    <groupId>com.itheima</groupId>
+    <artifactId>springcache-demo</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.20</version>
+        </dependency>
+
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>fastjson</artifactId>
+            <version>1.2.76</version>
+        </dependency>
+
+        <dependency>
+            <groupId>commons-lang</groupId>
+            <artifactId>commons-lang</artifactId>
+            <version>2.6</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-cache</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-redis</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.mybatis.spring.boot</groupId>
+            <artifactId>mybatis-spring-boot-starter</artifactId>
+            <version>2.2.0</version>
+        </dependency>
+
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>druid-spring-boot-starter</artifactId>
+            <version>1.2.1</version>
+        </dependency>
+
+        <dependency>
+            <groupId>com.github.xiaoymin</groupId>
+            <artifactId>knife4j-spring-boot-starter</artifactId>
+            <version>3.0.2</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+        </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <version>2.7.3</version>
+            </plugin>
+        </plugins>
+    </build>
+</project>

springcache-demo - inmind/springcachedemo.sql

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+DROP TABLE IF EXISTS `user`;
+CREATE TABLE `user` (
+  `id` bigint NOT NULL AUTO_INCREMENT,
+  `name` varchar(45) DEFAULT NULL,
+  `age` int DEFAULT NULL,
+  PRIMARY KEY (`id`)
+);

springcache-demo - inmind/src/main/java/com/inmind/CacheDemoApplication.java

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+package com.inmind;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cache.annotation.EnableCaching;
+
+@Slf4j
+@SpringBootApplication
+@EnableCaching
+public class CacheDemoApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(CacheDemoApplication.class,args);
+        log.info("项目启动成功...");
+    }
+}

springcache-demo - inmind/src/main/java/com/inmind/config/WebMvcConfiguration.java

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+package com.inmind.config;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
+import springfox.documentation.builders.ApiInfoBuilder;
+import springfox.documentation.builders.PathSelectors;
+import springfox.documentation.builders.RequestHandlerSelectors;
+import springfox.documentation.service.ApiInfo;
+import springfox.documentation.spi.DocumentationType;
+import springfox.documentation.spring.web.plugins.Docket;
+
+@Configuration
+@Slf4j
+public class WebMvcConfiguration extends WebMvcConfigurationSupport {
+
+    /**
+     * 生成接口文档配置
+     * @return
+     */
+    @Bean
+    public Docket docket(){
+        log.info("准备生成接口文档...");
+
+        ApiInfo apiInfo = new ApiInfoBuilder()
+                .title("接口文档")
+                .version("2.0")
+                .description("接口文档")
+                .build();
+
+        Docket docket = new Docket(DocumentationType.SWAGGER_2)
+                .apiInfo(apiInfo)
+                .select()
+                //指定生成接口需要扫描的包
+                .apis(RequestHandlerSelectors.basePackage("com.inmind.controller"))
+                .paths(PathSelectors.any())
+                .build();
+
+        return docket;
+    }
+
+    /**
+     * 设置静态资源映射
+     * @param registry
+     */
+    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
+        log.info("开始设置静态资源映射...");
+        registry.addResourceHandler("/doc.html").addResourceLocations("classpath:/META-INF/resources/");
+        registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
+    }
+}

springcache-demo - inmind/src/main/java/com/inmind/controller/UserController.java

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+package com.inmind.controller;
+
+import com.inmind.entity.User;
+import com.inmind.mapper.UserMapper;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.cache.annotation.CachePut;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/user")
+@Slf4j
+public class UserController {
+
+    @Autowired
+    private UserMapper userMapper;
+
+
+    /*
+     *
+     * 业务：在新增用户时，将用户信息缓存到redis中
+     *
+     * Spring Expression Language（SpEL）
+     *
+     */
+    @PostMapping
+//    @CachePut(cacheNames = "userCache",key = "#user.id")//如果使用springCache缓存数据，key的生成的规则：userCache::动态ID
+    @CachePut(cacheNames = "userCache",key = "#result.id")//对象导航，result就表示该方法的返回值！！！
+//    @CachePut(cacheNames = "userCache",key = "#p0.id")//p0:param0 参数列表中第一个参数
+//    @CachePut(cacheNames = "userCache",key = "#a0.id")//a0:argment0 参数列表中第一个参数
+//    @CachePut(cacheNames = "userCache",key = "#root.args[0].id")//root.args[0]:save方法的参数列表的第0个参数
+    public User save(@RequestBody User user){
+        userMapper.insert(user);
+        return user;
+    }
+
+    @DeleteMapping
+    public void deleteById(Long id){
+        userMapper.deleteById(id);
+    }
+
+	@DeleteMapping("/delAll")
+    public void deleteAll(){
+        userMapper.deleteAll();
+    }
+
+    @GetMapping
+    public User getById(Long id){
+        User user = userMapper.getById(id);
+        return user;
+    }
+
+}

springcache-demo - inmind/src/main/java/com/inmind/entity/User.java

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+package com.inmind.entity;
+
+import lombok.Data;
+import java.io.Serializable;
+
+@Data
+public class User implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    private Long id;
+
+    private String name;
+
+    private int age;
+
+}

springcache-demo - inmind/src/main/java/com/inmind/mapper/UserMapper.java

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+package com.inmind.mapper;
+
+import com.inmind.entity.User;
+import org.apache.ibatis.annotations.*;
+
+@Mapper
+public interface UserMapper{
+
+    @Insert("insert into user(name,age) values (#{name},#{age})")
+    @Options(useGeneratedKeys = true,keyProperty = "id")
+    void insert(User user);
+
+    @Delete("delete from user where id = #{id}")
+    void deleteById(Long id);
+
+    @Delete("delete from user")
+    void deleteAll();
+
+    @Select("select * from user where id = #{id}")
+    User getById(Long id);
+}

springcache-demo - inmind/src/main/resources/application.yml

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+server:
+  port: 8888
+spring:
+  datasource:
+    druid:
+      driver-class-name: com.mysql.cj.jdbc.Driver
+      url: jdbc:mysql://localhost:3306/spring_cache_demo?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&useSSL=false&allowPublicKeyRetrieval=true
+      username: root
+      password: 1234
+  redis:
+    host: localhost
+    port: 6379
+#    password: 123456
+    database: 1
+logging:
+  level:
+    com:
+      inmind:
+        mapper: debug
+        service: info
+        controller: info