安装Redis
安装完成后打开redis-server.exe启动Redis服务器，再打开redis-cli.exe文件启动客户端，Redis Ping 命令使用客户端向 Redis 服务器发送一个 PING ，如果服务器运作正常的话，会返回一个 PONG 。
通常用于测试与服务器的连接是否仍然生效，或者用于测量延迟值。
redis的一些命令
keys * 查看所有缓存
flushall 清除所有数据
我的项目列表
1.pom.xml文件引用
<?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>
<groupId>com.group7.pm</groupId>
<artifactId>personalmanagement</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>PersonalManagement</name>
<description>Project for PersonalManagement</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<!--springboot整合mybatis需要的包-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</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>1.3.2</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<!--shiro核心包-->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-core</artifactId>
<version>1.2.2</version>
</dependency>
<!--shiro web支持-->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-web</artifactId>
<version>1.2.2</version>
</dependency>
<!--shiro spring支持-->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-spring</artifactId>
<version>1.2.2</version>
</dependency>
<!--Shiro整合ehcache,提供缓存realm数据的功能-->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-ehcache</artifactId>
<version>1.2.2</version>
</dependency>
<!--模板thymeleaf包-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<!-- druid数据库连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.9</version>
</dependency>
<!--oracle-->
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version>11.2.0.4.0</version>
</dependency>
<!--日志 logback start-->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.2.3</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-to-slf4j</artifactId>
<version>2.10.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jul-to-slf4j</artifactId>
<version>1.7.25</version>
<scope>compile</scope>
</dependency>
<!-- jedis包 -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.8.0</version>
</dependency>
<!-- mybatis 整合redis 包 -->
<dependency>
<groupId>org.mybatis.caches</groupId>
<artifactId>mybatis-redis</artifactId>
<version>1.0.0-beta2</version>
</dependency>
</dependencies>
<build>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.0.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.20.1</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.0</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
2.application.properties中的配置
# 配置项目名称
server.servlet.context-path=/p2p
spring.datasource.driver-class-name=oracle.jdbc.driver.OracleDriver
#清除缓存，实现热部署
spring.thymeleaf.cache=false
#回避HTML进行严格的检查的配置 需要提前引入nekohtml依赖
spring.thymeleaf.mode=LEGACYHTML5
spring.datasource.druid.url=jdbc:oracle:thin:@172.16.22.63:1521:orcl
#数据库登录名
spring.datasource.druid.username=scott
#登录密码
spring.datasource.druid.password=admin
#最小链接数
spring.datasource.druid.initial-size=5
#最大链接数
spring.datasource.druid.max-active=20
#最小空闲数
spring.datasource.druid.min-idle=10
#最大等待时间
spring.datasource.druid.max-wait=10
#是否缓存preparedStatement，也就是PSCache。PSCache对支持游标的数据库性能提升巨大，比如说oracle。
#在mysql5.5以下的版本中没有PSCache功能，建议关闭掉。
#spring.datasource.druid.pool-prepared-statements=true
#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
spring.datasource.druid.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
spring.datasource.druid.min-evictable-idle-time-millis=300000
#实体别名
mybatis.typeAliasesPackage=com.group7.entity
#全局解决无效的列类型1111
mybatis.configuration.jdbc-type-for-null=NULL
#mapper文件扫描
mybatis.mapperLocations=classpath:mapper/*.xml
#配置静态资源前后缀
spring.thymeleaf.prefix=classpath:/templates/
spring.thymeleaf.suffix=.html
#配置上传路径
upload.path=D:/images/
#上传配置
#默认支持文件上传
spring.servlet.multipart.enabled=true
spring.servlet.multipart.file-size-threshold=0
#上传文件大小配置 这两行加上了会报错，还没解决
#spring.servlet.multipart.max-file-size=10Mb
#spring.servlet.multipart.max-request-size=10Mb
#redis配置
spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.database=0
spring.redis.timeout=3000
spring.redis.jedis.pool.max-active=200
spring.redis.jedis.pool.max-idle=100
spring.redis.jedis.pool.min-idle=1
spring.redis.jedis.pool.max-wait=1000
spring.datasource.druid.test-on-borrow=true
spring.datasource.druid.test-on-return=true
3.dao层EmpDao的代码
import com.group7.entity.Emp;
import java.util.List;
import java.util.Map;
public interface EmpDao {
/**
* 员工列表方法
* @param map
* @return
*/
List<Emp> getList(Map map);
}
4.mapper中EmpDaoMapper.xml中的代码
<?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.group7.dao.EmpDao">
<cache type="org.mybatis.caches.redis.RedisCache" blocking="false"
flushInterval="0" readOnly="true" size="1024" eviction="FIFO"/>
<select id="getList" resultType="map">
select * from emp
</select>
</mapper>
6.service层EmpService中的代码
package com.group7.service;
import com.group7.entity.Emp;
import java.util.List;
import java.util.Map;
public interface EmpService {
/**
* 员工列表方法
* @param map
* @return
*/
List<Emp> getList(Map map);
}
7.serviceImpl中EmpServiceImpl中的代码
package com.group7.serviceImpl;
import com.group7.dao.EmpDao;
import com.group7.entity.Emp;
import com.group7.service.EmpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
import java.util.Map;
@Service
public class EmpServiceImpl implements EmpService {
@Autowired
private EmpDao empDao;
@Override
public List<Emp> getList(Map map) {
return empDao.getList(map);
}
}
8.controller层的EmpController中的代码
package com.group7.controller;
import com.group7.entity.Emp;
import com.group7.service.EmpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
import java.util.Map;
@RestController
public class EmpController{
/**
* 跳转雇员列表
* @return
*/
@ResponseBody
@RequestMapping("/toList")
public Object toList(Map map){
List<Emp> list = empService.getList(map);
return list;
}
}
9.启动类SpringbootApplication中的代码
package com.group7;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
//@EnableTransactionManagement//spring boot 开启注解式事务
@SpringBootApplication
@MapperScan("com.group7.dao")
public class SpringbootApplication {
public static void main(String[] args) {
SpringApplication.run(SpringbootApplication.class);
}
}
10.测试类SpringbootApplicationTests中的代码
package com.group7;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@SpringBootTest
public class SpringbootApplicationTests {
@Test
public void contextLoads() {
}
}
11.彩色日志logback-spring.xml中的配置
<?xml version="1.0" encoding="UTF-8"?>
<!-- 日志级别从低到高分为TRACE < DEBUG < INFO < WARN < ERROR < FATAL，如果设置为WARN，则低于WARN的信息都不会输出 -->
<!-- scan:当此属性设置为true时，配置文件如果发生改变，将会被重新加载，默认值为true -->
<!-- scanPeriod:设置监测配置文件是否有修改的时间间隔，如果没有给出时间单位，默认单位是毫秒。当scan为true时，此属性生效。默认的时间间隔为1分钟。 -->
<!-- debug:当此属性设置为true时，将打印出logback内部日志信息，实时查看logback运行状态。默认值为false。 -->
<configuration scan="true" scanPeriod="10 seconds">
<!--<include resource="org/springframework/boot/logging/logback/base.xml" />-->
<contextName>logback</contextName>
<!-- 彩色日志 -->
<!-- 彩色日志依赖的渲染类 -->
<conversionRule conversionWord="clr" converterClass="org.springframework.boot.logging.logback.ColorConverter" />
<conversionRule conversionWord="wex" converterClass="org.springframework.boot.logging.logback.WhitespaceThrowableProxyConverter" />
<conversionRule conversionWord="wEx"
converterClass="org.springframework.boot.logging.logback.ExtendedWhitespaceThrowableProxyConverter" />
<!-- 彩色日志格式 -->
<property name="CONSOLE_LOG_PATTERN"
value="${CONSOLE_LOG_PATTERN:-%clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}}" />
<!-- Console 输出设置 -->
<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>${CONSOLE_LOG_PATTERN}</pattern>
<charset>utf8</charset>
</encoder>
</appender>
<!--输出到控制台-->
<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
<!--此日志appender是为开发使用，只配置最底级别，控制台输出的日志级别是大于或等于此级别的日志信息-->
<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
<level>info</level>
</filter>
<encoder>
<Pattern>${CONSOLE_LOG_PATTERN}</Pattern>
<!-- 设置字符集 -->
<charset>UTF-8</charset>
</encoder>
</appender>
<!-- 时间滚动输出 level为 DEBUG 日志 -->
<appender name="DEBUG_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<!-- 正在记录的日志文件的路径及文件名 -->
<file>${log.path}/log_debug.log</file>
<!--日志文件输出格式-->
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
<charset>UTF-8</charset> <!-- 设置字符集 -->
</encoder>
<!-- 日志记录器的滚动策略，按日期，按大小记录 -->
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<!-- 日志归档 -->
<fileNamePattern>${log.path}/debug/log-debug-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>100MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
<!--日志文件保留天数-->
<maxHistory>15</maxHistory>
</rollingPolicy>
<!-- 此日志文件只记录debug级别的 -->
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>debug</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
</appender>
<!-- 时间滚动输出 level为 INFO 日志 -->
<appender name="INFO_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<!-- 正在记录的日志文件的路径及文件名 -->
<file>${log.path}/log_info.log</file>
<!--日志文件输出格式-->
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
<charset>UTF-8</charset>
</encoder>
<!-- 日志记录器的滚动策略，按日期，按大小记录 -->
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<!-- 每天日志归档路径以及格式 -->
<fileNamePattern>${log.path}/info/log-info-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>100MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
<!--日志文件保留天数-->
<maxHistory>15</maxHistory>
</rollingPolicy>
<!-- 此日志文件只记录info级别的 -->
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>info</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
</appender>
<!-- 时间滚动输出 level为 WARN 日志 -->
<appender name="WARN_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<!-- 正在记录的日志文件的路径及文件名 -->
<file>${log.path}/log_warn.log</file>
<!--日志文件输出格式-->
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
<charset>UTF-8</charset> <!-- 此处设置字符集 -->
</encoder>
<!-- 日志记录器的滚动策略，按日期，按大小记录 -->
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${log.path}/warn/log-warn-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>100MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
<!--日志文件保留天数-->
<maxHistory>15</maxHistory>
</rollingPolicy>
<!-- 此日志文件只记录warn级别的 -->
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>warn</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
</appender>
<!-- 时间滚动输出 level为 ERROR 日志 -->
<appender name="ERROR_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<!-- 正在记录的日志文件的路径及文件名 -->
<file>${log.path}/log_error.log</file>
<!--日志文件输出格式-->
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
<charset>UTF-8</charset> <!-- 此处设置字符集 -->
</encoder>
<!-- 日志记录器的滚动策略，按日期，按大小记录 -->
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${log.path}/error/log-error-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>100MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
<!--日志文件保留天数-->
<maxHistory>15</maxHistory>
</rollingPolicy>
<!-- 此日志文件只记录ERROR级别的 -->
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>ERROR</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
</appender>
<!--开发环境:打印控制台-->
<springProfile name="dev">
<logger name="com.my.view" level="debug"/>
</springProfile>
<!-- <!–输出到控制台 ConsoleAppender–>
<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
<!–展示格式 layout–> <layout class="ch.qos.logback.classic.PatternLayout">
<pattern>%d -1 %msg%n</pattern> </layout>
</appender>-->
<root level="info">
<appender-ref ref="CONSOLE" />
<appender-ref ref="DEBUG_FILE" />
<appender-ref ref="INFO_FILE" />
<appender-ref ref="WARN_FILE" />
<appender-ref ref="ERROR_FILE" />
</root>
</configuration>
执行完上面的代码得出的结果
再打开redis-cli.exe程序，输入keys * ,可以看到redis的缓存中已经有了上图中的数据
redis中没有缓存时执行的时候需要去数据库中查询，如果redis中有缓存时就直接在缓存中取，没有缓存跟有缓存时的执行区别如下图
没有缓存
有缓存（直接在缓存中取了，所以相当于不用执行查询代码）
这是今天老师讲完我总结的，一部分是想着自己忘了还能看看，一部分有需要的可以看看
GitHub地址：https://github.com/aywc/P2P.git