springBoot2.0 配置 mybatis+mybatisPlus+redis

時間 2019-12-07

標籤 springboot2.0 springboot 配置 mybatis+mybatisplus+redis mybatis mybatisplus redis 欄目 Spring 简体版

原文原文鏈接

一.Idea新建springBoot項目css

next到完成，而後修改使用本身的mavenjava

等待下載包mysql

二.pom.xml文件web

<?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>2.1.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo2</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo2</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <!-- 配置環境變量 -->
    <profiles>
        <profile>
            <id>dev</id>
            <properties>
                <profiles.active>dev</profiles.active>
            </properties>
            <!-- 默認環境 -->
            <activation>
                <activeByDefault>true</activeByDefault>
            </activation>
        </profile>
        <profile>
            <id>prod</id>
            <properties>
                <profiles.active>prod</profiles.active>
            </properties>
        </profile>
    </profiles>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.0.0</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!-- 阿里數據源 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>

        <!-- lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <!-- mybatisPlus -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.0.7.1</version>
        </dependency>

        <!-- mybatis -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.2</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

三.application配置文件redis

application.properties 修改成 application.ymlspring

新增application-dev.yml測試環境文件和application-prod.yml生成環境文件sql

application.yml配置apache

#默認配置文件
spring:
  profiles:
    active: @profiles.active@

#tomcat
server:
  port: 8080
  servlet:
    context-path: /demo2


#mybatis
mybatis-plus:
  configuration:
    map-underscore-to-camel-case: true
    jdbc-type-for-null: null
    auto-mapping-behavior: full
  mapper-locations: classpath*:mapping/*.xml
  type-aliases-package: com.sssr.assets.entity

#日誌
logging:
  level:
    com.example.demo2.dao: debug
    org:
      springframework:
        boot:
          autoconfigure: ERROR
#日誌文件輸出路徑
#  file:
#    assets.log

application-dev.yml配置緩存

spring:
  datasource:
    druid:
      driver-class-name: com.mysql.cj.jdbc.Driver
      url: jdbc:mysql://localhost:3306/assets?characterEncoding=utf8&useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true
      username: root
      password: 123456
      stat-view-servlet:
        url-pattern: /druid/*
        reset-enable: true
        login-username: druid
        login-password: druid
      web-stat-filter:
        url-pattern: /*
        exclusions: "*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*"
  #redis
  redis:
    database: 0
    host: localhost
    port: 6379
    timeout: 3000
    password:
jedis:
      #    連接池
      pool:
#       最大鏈接數（負值表示沒有限制）
        max-active: 8
#       最大阻塞等待時間（負值表示沒有限制）
        max-wait: 1
#       最大空閒連接
        max-idle: 8
#       最小空閒連接
        min-idle: 0

四.entity，dao，controller，service，config，mapping包tomcat

User.java 實體類

package com.example.demo2.entity;

import lombok.Getter;
import lombok.Setter;

import java.io.Serializable;

/**
 * @author sssr
 * @version 1.0
 * @Description:
 * @date 2019/2/16
 */
@Getter
@Setter
public class User implements Serializable {
    private Long id;
    private String username;
    private String password;

}

UserDao.java

package com.example.demo2.dao;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.example.demo2.entity.User;
import org.springframework.stereotype.Repository;

import java.util.List;

/**
 * @author sssr
 * @version 1.0
 * @Description:
 * @date 2019/2/16
 */
@Repository
public interface UserDao extends BaseMapper<User> {
    /**
     * 用戶列表
     * @return
     */
    List<User> getList();
}

UserDao.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >

<mapper namespace="com.example.demo2.dao.UserDao">

    <resultMap id="userMap" type="com.example.demo2.entity.User">
    </resultMap>

    <select id="getList" resultMap="userMap">
      SELECT u.* FROM user u
    </select>
</mapper>

UserService.java

package com.example.demo2.service;

import com.baomidou.mybatisplus.extension.service.IService;
import com.example.demo2.entity.User;

import java.util.List;

/**
 * @author sssr
 * @version 1.0
 * @Description:
 * @date 2019/2/16
 */
public interface UserService extends IService<User> {

    List<User> getList();
}

UserServiceImpl.java

package com.example.demo2.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.example.demo2.dao.UserDao;
import com.example.demo2.entity.User;
import com.example.demo2.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * @author sssr
 * @version 1.0
 * @Description:
 * @date 2019/2/16
 */
@Service
public class UserServiceImpl extends ServiceImpl<UserDao, User> implements UserService {
    @Autowired
    private UserDao userDao;

    /** (non-Javadoc)
     * @value:   在redis中 保存緩存在以user命名的集合中
     * @key  :   user集合中的關鍵字，注意字符串要以單引號括住  '',變量前綴加#號，如#userId
     */
    @Override
    @Cacheable(value="user",key="'userList'")
    public List<User> getList() {
        return userDao.getList();
    }
}

UserController.java

package com.example.demo2.controller;

import com.example.demo2.entity.User;
import com.example.demo2.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

/**
 * @author sssr
 * @version 1.0
 * @Description:
 * @date 2019/2/16
 */
@RestController
@RequestMapping("/user")
public class UserController {
    @Autowired
    private UserService userService;

    @GetMapping("/list")
    public List<User> getUserList(){
        return userService.getList();
    }
}

RedisConfig.java

package com.example.demo2.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.cache.RedisCacheWriter;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;

import java.time.Duration;

/**
 * @author sssr
 * @version 1.0
 * @Description:
 * @date 2019/1/17
 */
@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {

    //緩存管理器
    @Bean
    public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {
        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(Duration.ofHours(1)); // 設置緩存有效期一小時
        return RedisCacheManager
                .builder(RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory))
                .cacheDefaults(redisCacheConfiguration).build();
    }

    @Bean
    public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory){
        StringRedisTemplate template = new StringRedisTemplate(factory);
        setSerializer(template);//設置序列化工具
        template.afterPropertiesSet();
        return template;
    }
    private void setSerializer(StringRedisTemplate template){
        @SuppressWarnings({ "rawtypes", "unchecked" })
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        template.setValueSerializer(jackson2JsonRedisSerializer);
    }
}

Demo2Application.java

package com.sssr.assets;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.scheduling.annotation.EnableScheduling;

/**
 * @author sssr
 * 配置redis緩存，容許緩存
 *@EnableScheduling
 *@EnableCaching
 */
@SpringBootApplication
@EnableScheduling
@EnableCaching
@MapperScan({"com.example.demo2.dao","com.baomidou.mybatisplus.samples.quickstart.mapper"})
public class AssetsApplication {

   public static void main(String[] args) {
      SpringApplication.run(AssetsApplication.class, args);
   }

}