<dependency>
<groupId>com.alibabagroupId>
<artifactId>druid-spring-boot-starterartifactId>
<version>1.1.10version>
dependency>
mybatis:
mapper-locations: classpath:mappers/*xml
type-aliases-package: com.xnx.spboot04.model
server:
port: 8080
servlet:
context-path: /spboot04
spring:
application:
name: spboot04
datasource:
driver-class-name: com.mysql.jdbc.Driver
name: defaultDataSource
password: 123456
url: jdbc:mysql://localhost:3306/t280?useUnicode=true&characterEncoding=UTF-8
username: root
type: com.alibaba.druid.pool.DruidDataSource
druid:
#2.连接池配置
#初始化连接池的连接数量 大小,最小,最大
initial-size: 5
min-idle: 5
max-active: 20
#配置获取连接等待超时的时间
max-wait: 60000
#配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒
time-between-eviction-runs-millis: 60000
# 配置一个连接在池中最小生存的时间,单位是毫秒
min-evictable-idle-time-millis: 30000
validation-query: SELECT 1 FROM DUAL
test-while-idle: true
test-on-borrow: true
test-on-return: false
# 是否缓存preparedStatement,也就是PSCache 官方建议MySQL下建议关闭 个人建议如果想用SQL防火墙 建议打开
pool-prepared-statements: true
max-pool-prepared-statement-per-connection-size: 20
# 配置监控统计拦截的filters,去掉后监控界面sql无法统计,'wall'用于防火墙
filter:
stat:
merge-sql: true
slow-sql-millis: 5000
#3.基础监控配置
web-stat-filter:
enabled: true
url-pattern: /*
#设置不统计哪些URL
exclusions: "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*"
session-stat-enable: true
session-stat-max-count: 100
stat-view-servlet:
enabled: true
url-pattern: /druid/*
reset-enable: true
#设置监控页面的登录名和密码
login-username: admin
login-password: admin
allow: 127.0.0.1
#deny: 192.168.1.100
freemarker:
cache: false
charset: utf-8
expose-request-attributes: true
expose-session-attributes: true
suffix: .ftl
template-loader-path: classpath:/templates/
mvc:
static-path-pattern: /static/**
redis:
host: 192.168.230.128
port: 6379
database: 0
password: 123456
# resources:
# static-locations: classpath:/static/# Ӧ�÷��� WEB ���ʶ˿�
pagehelper:
reasonable: true
supportMethodsArguments: true
page-size-zero: true
helper-dialect: mysql
logging:
level:
com.xnx.spboot04: debug
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-data-redisartifactId>
dependency>
在上面的yml文件中已配置
@Bean
public RedisTemplate<String,Object> getRedisTemplate(RedisConnectionFactory connectionFactory){
RedisTemplate<String,Object> redisTemplate = new RedisTemplate<>();
// 配置序列化器
// 针对于key
redisTemplate.setKeySerializer(new StringRedisSerializer());
redisTemplate.setHashKeySerializer(new StringRedisSerializer());
// 针对于value
redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
redisTemplate.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());
// redisTemplate.afterPropertiesSet();//根据不同的redis版本,让配置生效
// connnectionFactory是包含了redis的连接信息
redisTemplate.setConnectionFactory(connectionFactory);
return redisTemplate;
}
package com.xnx.spboot04.biz.impl;
import com.xnx.spboot04.biz.ClazzBiz;
import com.xnx.spboot04.mapper.ClazzMapper;
import com.xnx.spboot04.model.Clazz;
import com.xnx.spboot04.util.PageBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import java.util.List;
import java.util.Map;
@Service
public class ClazzBizImpl implements ClazzBiz {
@Autowired
private ClazzMapper clazzMapper;
@Autowired
private RedisTemplate<String,Object> redisTemplate;
@Override
public int deleteByPrimaryKey(Integer cid) {
System.out.println("不做任何操作...");
return clazzMapper.deleteByPrimaryKey(cid);
// return 0;
}
@Override
public int insert(Clazz record) {
return clazzMapper.insert(record);
}
@Override
public int insertSelective(Clazz record) {
return clazzMapper.insertSelective(record);
}
@Override
public Clazz selectByPrimaryKey(Integer cid) {
return clazzMapper.selectByPrimaryKey(cid);
}
@Override
public int updateByPrimaryKeySelective(Clazz record) {
return clazzMapper.updateByPrimaryKeySelective(record);
}
@Override
public int updateByPrimaryKey(Clazz record) {
return clazzMapper.updateByPrimaryKey(record);
}
@Override
public List<Clazz> listPager(Clazz clazz, PageBean pageBean) {
List<Clazz> clazzes = clazzMapper.listPager(clazz);
// 将班级信息缓存到redis中
// redisTemplate.opsForValue().set("clz_infos",clazzes);
return clazzes;
}
@Override
public List<Map> listMapPager(Clazz clazz, PageBean pageBean) {
if(true)
throw new RuntimeException("查询班级信息异常,异常存在于ClazzBizImpl.list。。。。");
return clazzMapper.listMapPager(clazz);
}
}
package com.xnx.spboot04.config;
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.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import java.time.Duration;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
/**
* @author xnx
* @create 2022-11-02 9:38
*
* @Configuration:反射被@Configuration注解所标记,就代表当前这个类为配置类
* 而配置类等价于ssm阶段的中spring-*.xml这一类的配置文件
*
* spring-*.xml
*
*
* 我们要做的:将redistemplate进行配置,然后交给spring进行管理
*
* @EnableCaching替代了下面的配置
*
*/
@EnableCaching
@Configuration
public class RedisConfig {
private final int defaultExpireTime = 600;
private final int userCacheExpireTime = 60;
private final String userCacheName = "test";
@Bean
public RedisTemplate<String,Object> getRedisTemplate(RedisConnectionFactory connectionFactory){
RedisTemplate<String,Object> redisTemplate = new RedisTemplate<>();
// 配置序列化器
// 针对于key
redisTemplate.setKeySerializer(new StringRedisSerializer());
redisTemplate.setHashKeySerializer(new StringRedisSerializer());
// 针对于value
redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
redisTemplate.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());
// redisTemplate.afterPropertiesSet();//根据不同的redis版本,让配置生效
// connnectionFactory是包含了redis的连接信息
redisTemplate.setConnectionFactory(connectionFactory);
return redisTemplate;
}
@Bean
public RedisCacheManager redis(RedisConnectionFactory connectionFactory){
RedisCacheConfiguration defaultCacheConfig = RedisCacheConfiguration.defaultCacheConfig();
// 设置缓存管理器管理的缓存的默认过期时间
defaultCacheConfig = defaultCacheConfig.entryTtl(Duration.ofSeconds(defaultExpireTime))
// 设置 key为string序列化
.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()))
// 设置value为json序列化
.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()))
// 不缓存空值
.disableCachingNullValues();
Set<String> cacheNames = new HashSet<>();
cacheNames.add(userCacheName);
// 对每个缓存空间应用不同的配置
Map<String, RedisCacheConfiguration> configMap = new HashMap<>();
configMap.put(userCacheName, defaultCacheConfig.entryTtl(Duration.ofSeconds(userCacheExpireTime)));
RedisCacheManager cacheManager = RedisCacheManager.builder(connectionFactory)
.cacheDefaults(defaultCacheConfig)
.initialCacheNames(cacheNames)
.withInitialCacheConfigurations(configMap)
.build();
return cacheManager;
}
}
package com.xnx.spboot04.biz;
import com.xnx.spboot04.model.Clazz;
import com.xnx.spboot04.util.PageBean;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.CachePut;
import org.springframework.cache.annotation.Cacheable;
import java.util.List;
import java.util.Map;
public interface ClazzBiz {
int deleteByPrimaryKey(Integer cid);
int insert(Clazz record);
int insertSelective(Clazz record);
// xx=cache-cid:1
// key的作用改变原有的key生成规则
// @Cacheable(value = "user") ttl时间为60秒
@Cacheable(value = "clz",key = "'cid:'+#clazz.cid")
Clazz selectByPrimaryKey(Integer cid);
int updateByPrimaryKeySelective(Clazz record);
int updateByPrimaryKey(Clazz record);
List<Clazz> listPager(Clazz clazz, PageBean pageBean);
List<Map> listMapPager(Clazz clazz, PageBean pageBean);
}
注意:redis用的是在linux中开启的服务