spring boot整合mybatis -配置 druid 資料來源
阿新 • • 發佈：2018-12-11
druid 資料庫連線池是由阿里提供，由於其效能很高並且提供了強大的監控功能，所以被越來越多的應用。
第一次配置，很簡單。也沒有花太多時間，最坑的是 druid 監控的配置處理時：
# 這裡一定要配置為 "/druid/*"，而不是"/druid"，瀏覽器會報錯404！
ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean( new StatViewServlet(), "/druid/*"); #這裡一定要配置為 "/druid/*"，如果是"/druid"，瀏覽器會報錯404！
第一步 配置pom.xml檔案
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.17</version>
</dependency>
同時配置 mybatis 啟動包 和 mysql 連線包
<dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.2</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <!--日誌配置 將資料庫SQL執行打印出來，還需要新增一個配置檔案 logback-spring.xml start --> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-core</artifactId> </dependency> <!--日誌配置 將資料庫SQL執行打印出來，還需要新增一個配置檔案 logback-spring.xml end-->
第二步 配置application.properties
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
# 配合Druid監控的過濾配置filters ,去掉後監控介面sql無法統計，'wall'用於防火牆
spring.datasource.filters=stat,wall,log4j
同時配置 mybatis
spring.datasource.url = jdbc:mysql://**資料庫ip**:3306/mldn?useUnicode=true&characterEncoding=utf8&allowMultiQueries=true spring.datasource.username = root spring.datasource.password = root spring.datasource.initialSize=5 spring.datasource.minIdle=5 spring.datasource.maxActive=50 spring.datasource.maxWait=60000 spring.datasource.timeBetweenEvictionRunsMillis=60000 spring.datasource.minEvictableIdleTimeMillis=300000 spring.datasource.validationQuery=SELECT 1 FROM DUAL spring.datasource.testWhileIdle=true spring.datasource.testOnBorrow=true spring.datasource.testOnReturn=false spring.datasource.poolPreparedStatements=false spring.datasource.maxPoolPreparedStatementPerConnectionSize=20 # 配合Druid監控的過濾配置filters ,去掉後監控介面sql無法統計，'wall'用於防火牆 spring.datasource.filters=stat,wall,log4j # connectProperties spring.datasources.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000 # Mybatis配置 # Mybatis所有操作類的別名所在包 mybatis.typeAliasesPackage=com.example.demo.bean # Mybatis所有的對映檔案 mybatis.mapperLocations=classpath:mapper/**/*.xml # Mybatis配置檔案所在路徑 mybatis.config-location=classpath:mybatis-config.xml
當然還要有Mybatis配置檔案：src\main\resources\mybatis-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-mybatis.org//DTD Config 3.0//EN" "http://mybatis.org.dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<!-- 列印查詢語句 -->
<!--<setting name="logImpl" value="STDOUT_LOGGING" />-->
<setting name="logImpl" value="SLF4J" />
</settings>
<typeAliases>
<typeAlias alias="Integer" type="java.lang.Integer" />
<typeAlias alias="Long" type="java.lang.Long" />
<typeAlias alias="HashMap" type="java.util.HashMap" />
<typeAlias alias="LinkedHashMap" type="java.util.LinkedHashMap" />
<typeAlias alias="ArrayList" type="java.util.ArrayList" />
<typeAlias alias="LinkedList" type="java.util.LinkedList" />
</typeAliases>
</configuration>
logback配置檔案：src\main\resources\logback-spring.xml
<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="true">
<!-- 儘量別用絕對路徑，如果帶引數不同容器路徑解釋可能不同 -->
<property name="LOG_HOME" value="../logs" />
<springProperty scope="context" name="logLevel" source="log.level"/>
<appender name="Console" class="ch.qos.logback.core.ConsoleAppender">
<layout class="ch.qos.logback.classic.PatternLayout">
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
</layout>
</appender>
<!-- 按照每天生成日誌檔案 -->
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<FileNamePattern>${LOG_HOME}/CcxDecision_%d{yyyy-MM-dd}.log</FileNamePattern>
<MaxHistory>180</MaxHistory>
</rollingPolicy>
<layout class="ch.qos.logback.classic.PatternLayout">
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
</layout>
</appender>
<!--設定具體包的日誌級別-->
<springProfile name="dev,product">
**<logger name="com.example.demo" level="debug" />** <!-- 配置自己專案 -->
<logger name="org.springframework.web" level="debug"/>
<logger name="io.lettuce.core.RedisClient" level="debug" />
<logger name="org.apache.http.wire" level="debug" />
<logger name="com.mycompany.myapp.mapper.MyMapper" level="DEBUG"/>
</springProfile>
<root level="${logLevel}"> <!-- root將級別為“INFO”及大於“INFO”的日誌資訊交給已經配置好的名為“Console”的appender處理，“Console”appender將資訊列印到Console； -->
<appender-ref ref="Console" /> <!-- 標識這個appender將會新增到這個logger -->
<appender-ref ref="FILE" />
</root>
</configuration>
最終在我們專案logs下可以看到日誌檔案
第三步
新增一個 druid 配置類，設定 DruidDataSource。 DruidConfig.java
package com.example.demo.config;
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import javax.sql.DataSource;
import java.sql.SQLException;
@Configuration
public class DruidConfig {
// 主要實現WEB監控的配置處理
@Bean
public ServletRegistrationBean druidServlet() {
ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(
new StatViewServlet(), "/druid"); //進行druid監控的配置處理操作
servletRegistrationBean.addInitParameter("allow",
"127.0.0.1,10.0.5.58"); // 白名單
servletRegistrationBean.addInitParameter("deny", "192.168.1.200"); // 黑名單
servletRegistrationBean.addInitParameter("loginUsername", "druid"); // druid的使用者名稱
servletRegistrationBean.addInitParameter("loginPassword", "druid"); // druid的密碼
servletRegistrationBean.addInitParameter("resetEnable", "false"); // 是否可以重置資料來源
return servletRegistrationBean;
}
// 主要實現檔案監控的配置處理
@Bean
public FilterRegistrationBean filterRegistrationBean() {
FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
filterRegistrationBean.setFilter(new WebStatFilter());
filterRegistrationBean.addUrlPatterns("/*"); // 所有請求進行監控處理
filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.css,/druid/*");// 不監控的格式
return filterRegistrationBean;
}
// 將所有字首為spring.datasource下的配置項都載入到DataSource中
@ConfigurationProperties(prefix = "spring.datasource")
@Bean
public DataSource druidDataSource() {
return new DruidDataSource();
}
}
注意：非常關鍵的監控配置：
ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(
new StatViewServlet(), "/druid/*");
#這裡一定要配置為 "/druid/*"，如果是"/druid"，瀏覽器會報錯404！
第四步 驗證
輸入地址：http://localhost/druid/login.html
