微服務架構項目實戰SpringBoot中的 Druid整合與集成

時間 2019-12-05

標籤微服架構項目實戰 springboot druid 整合集成欄目系統架構简体版

原文原文鏈接

1、SpringBoot引入Druid的依賴包

Xml代碼css

<dependency>java
<groupId>mysql</groupId>mysql
<artifactId>mysql-connector-java</artifactId>web
<scope>runtime</scope>spring
</dependency>sql
<dependency>數據庫
<groupId>com.alibaba</groupId>瀏覽器
<artifactId>druid</artifactId>springboot
<version>1.1.9</version>架構
</dependency>

2、設置配置文件application.properties

Java代碼

spring.datasource.url=jdbc:mysql://192.168.1.166:3306/study
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
#spring.datasource.schema=
#數據源其餘配置，須要增長Druid的配置類（否則不生效）
#配置見：com.lqy.springboot.datasource.druid.DruidConfig
spring.datasource.initialSize=5
spring.datasource.minIdle=5
spring.datasource.maxActive=20
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=false
spring.datasource.testOnReturn=false
spring.datasource.poolPreparedStatements=true
#配置監控統計攔截的filters，去掉後監控界面sql沒法統計，'wall'用於防火牆
spring.datasource.filters=stat,wall,log4j
spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
spring.datasource.useGlobalDataSourceStat=true
spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

3、增長Druid自定義配置類

爲何要增長呢？

由於SpringBoot自己提供的配置只是部分的數據庫鏈接配置，不少Druid須要的屬性配置是沒有的，如：

Java代碼

1. spring.datasource.initialSize

這個屬性，SpringBoot是沒有的，只有Druid纔有，因此須要增長相應的配置類，自動注入。

DruidConfig 類：

Java代碼

import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import javax.sql.DataSource;
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 com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
/**
* 導入druid數據源，擴展相關的配置屬性
*
*/
@Configuration
public class DruidConfig {
/**
* 配置Druid的屬性，和DataSource進行綁定，前綴設置爲：spring.datasource
* 不配置的話，不少初始化的屬性是沒有綁定的
* @return
*/
@Bean
@ConfigurationProperties(prefix="spring.datasource")
public DataSource druid() {
return new DruidDataSource();
}
/**
* 配置druid監控
* 配置一個管理後臺的servlet
* 訪問地址：http://localhost:8080/druid/
* @return
*/
@Bean
public ServletRegistrationBean statViewServlet() {
ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
Map<String, String> initParameters = new HashMap<String, String>();
initParameters.put("loginUsername", "admin");//屬性見：com.alibaba.druid.support.http.ResourceServlet
initParameters.put("loginPassword", "123456");
initParameters.put("allow", "");//默認容許全部
initParameters.put("deny", "");
bean.setInitParameters(initParameters);
return bean;
}
/**
* 配置一個web監控的filter
* @return
*/
@Bean
public FilterRegistrationBean webStatFilter() {
FilterRegistrationBean filterBean = new FilterRegistrationBean();
filterBean.setFilter(new WebStatFilter());
filterBean.setUrlPatterns(Arrays.asList("/*"));
Map<String, String> initParameters = new HashMap<String, String>();
initParameters.put("exclusions", "*.js,*.css,/druid/*");//屬性見：com.alibaba.druid.support.http.WebStatFilter
filterBean.setInitParameters(initParameters);
return filterBean;
}
}