SpringBoot2.0+Mybatis+PageHelper+Redis实现缓存

1.在maven引入相关的依赖

<parent>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-parent</artifactId>
  <version>2.0.0.RELEASE</version>
  <relativePath />
</parent>
<dependencies>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
  <!-- https://mvnrepository.com/artifact/redis.clients/jedis -->
  <dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
    <version>2.9.0</version>
  </dependency>
  <!-- redis -->
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
  </dependency>
  <!-- 支持 @ConfigurationProperties 注解 -->
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-configuration-processor</artifactId>
    <optional>true</optional>
  </dependency>
  <dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>1.3.1</version>
  </dependency>
  <!-- 数据库连接池 -->
  <dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.8</version>
  </dependency>
  <!-- mysql连接 -->
  <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>6.0.6</version>
  </dependency>

<dependency>
  <groupId>com.github.pagehelper</groupId>
  <artifactId>pagehelper</artifactId>
  <version>5.1.2</version>
</dependency>

<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>fastjson</artifactId>
  <version>1.2.31</version>
</dependency>

2.SpringBoot加载文件application.yml

mysql-connector-java6.0的url需要加载时区，driverClassName变为com.mysql.cj.jdbc.Driver。redis的密码在redis.config中修改。

com.mysql.cj.jdbc.Driver

server:
    port: 9090
    session-timeout: 30
    tomcat.max-threads: 0
    tomcat.uri-encoding: UTF-8
spring:
  datasource:
    type : com.alibaba.druid.pool.DruidDataSource
    url : jdbc:mysql://localhost:3306/book_store?serverTimezone=UTC&characterEncoding=utf8&useUnicode=true&useSSL=false
    username : root
    password : root
    driverClassName : com.mysql.cj.jdbc.Driver
    initialSize : 5
    minIdle : 5
    maxActive : 20
    maxWait : 60000
    timeBetweenEvictionRunsMillis : 60000
    minEvictableIdleTimeMillis : 300000
    validationQuery : SELECT 1 FROM DUAL
    testWhileIdle : true
    testOnBorrow : false
    testOnReturn : false
    poolPreparedStatements : true
    maxPoolPreparedStatementPerConnectionSize : 20
    filters : stat,wall
    connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis : 5000
    useGlobalDataSourceStat : true

  mybatis:
     type-aliases-package: com.qyj.entity
  pagehelper:
     helperDialect: mysql
     reasonable: true
     supportMethodsArguments: true
     params: count=countSql
  http:
     encoding:
        force : true
        charset : UTF-8
        enables : true

  thymeleaf:
     cache: false
     mode: HTML5
     prefix: classpath:/static/
     suffix: .html
     encoding: UTF-8
     content: text/html

  redis:
     host: 127.0.0.1
     port: 6379
     password: 123456
     timeout: 0

3.mybatis配置类MybatisConfig

@Configuration
@EnableTransactionManagement
public class MyBatisConfig implements TransactionManagementConfigurer {
    @Autowired
    DataSource dataSource;
   //注入pageHelper
    @Bean
    public PageInterceptor pageInterceptor() throws IOException {
        PageInterceptor pageInterceptor = new PageInterceptor();
        Properties props = new Properties();
        props.setProperty("reasonable", "true");
        props.setProperty("supportMethodsArguments", "true");
        props.setProperty("returnPageInfo", "check");
        props.setProperty("params", "count=countSql");
        pageInterceptor.setProperties(props);
        return pageInterceptor;
    }


    @Bean
    public SqlSessionTemplate sqlSessionTemplate(SqlSessionFactory sqlSessionFactory) {
        return new SqlSessionTemplate(sqlSessionFactory);
    }

    @Bean
    @Override
    public PlatformTransactionManager annotationDrivenTransactionManager() {
        return new DataSourceTransactionManager(dataSource);
    }
}

4.redis配置(参考springboot2.0文档所写)

@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {
    @Value("${spring.redis.host}")
    private String host;
    @Value("${spring.redis.port}")
    private int port;
    @Value("${spring.redis.timeout}")
    private int timeout;
    @Value("${spring.redis.password}")
    private String password;
    @Bean
    public KeyGenerator wiselyKeyGenerator(){//主键生成策咯
        return new KeyGenerator() {
            @Override
            public Object generate(Object target, Method method, Object... params) {
                StringBuilder sb = new StringBuilder();
                sb.append(target.getClass().getName());
                sb.append(method.getName());
                for (Object obj : params) {
                    sb.append(obj.toString());
                }
                return sb.toString();
            }
        };
    }

    @Bean
    @ConditionalOnMissingBean(StringRedisTemplate.class)
    public StringRedisTemplate stringRedisTemplate(RedisConnectionFactory redisConnectionFactory) throws UnknownHostException {
        StringRedisTemplate template = new StringRedisTemplate();
        template.setConnectionFactory(redisConnectionFactory);
        return template;
    }

    @Bean
    public RedisConnectionFactory redisConnectionFactory() {
        RedisStandaloneConfiguration factory = new RedisStandaloneConfiguration();
        factory.setHostName(host);
        factory.setPort(port);
        factory.setPassword(RedisPassword.of(password));
        return new JedisConnectionFactory(factory);
    }

}

5.Service(PageHelp5.0用法)

@Cacheable("queryGgdmDataList")
public ResponseData queryGgdmDataList(Map<String, Object> queryParams) {
    int index = Integer.parseInt(queryParams.get("page").toString());
    int size = Integer.parseInt(queryParams.get("rows").toString());
    PageHelper.startPage(index, size);
    StringBuilder sql = new StringBuilder();
    List<Map<String,Object>> commList = mybatisDao.queryListDataBySql(sql.toString());
    PageInfo page = new PageInfo(commList) ;
    List list = page.getList();
    ResponseData pageResult = new ResponseData((int) page.getTotal(), list);
    return pageResult;
}

6.SpringBoot启动

@SpringBootApplication
@ServletComponentScan
@EnableAutoConfiguration
@MapperScan("xx.xx.dao")//扫描的Dao层
public class ApplicationSpringBoot {
   public static void main(String[] args) {
      SpringApplication.run(ApplicationSpringBoot.class,args);
   }
   
}

7.Controller采用Restful风格

@RestController
@RequestMapping("/framework")

public class CommController {
  @RequestMapping( value = "/bzfl/getComboxData", method = 
  RequestMethod.GET)
  @ResponseBody
  public List<Map<String,Object>> getComboxData(@RequestParam String ssfl){
    return commService.getComboxData(ssfl);
  }
}

9.数据缓存到redis(工具Redis Resktop Manager)