基於 Spring Boot 的 SSM 環境整合七：配置 druid
阿新 • • 發佈：2018-12-20
上一篇中已通過 druid 連線池使用 sqlite 資料庫，我使用 druid 連線池更多的是想使用強大的監控功能，但在配置時遇到了很多問題（因 SQLITE），暫時還沒有解決 。故我將資料庫由 sqlite 變更為 mysql，建表語句和資料參考上一篇。
1、修改 pom.xml
首先是刪除原 druid 和 sqlite 資源，並增加新的 druid 和 mysql 資源。即刪除如下資源：
<dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.31</version> </dependency> <dependency> <groupId>org.xerial</groupId> <artifactId>sqlite-jdbc</artifactId> <version>3.7.2</version> </dependency>
然後引入如下資源：
<!-- 連線池 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.10</version> </dependency> <!-- mysql --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency>
儲存後即得執行 Maven install。完成後的 pom.xml 如下：
<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.whowii</groupId> <artifactId>website_java4</artifactId> <version>0.0.1-SNAPSHOT</version> <!-- 引入spring-boot-start-parent 以提供dependency management，也就是依賴管理，引入以後在宣告其它dependency的時候就不需要version了 --> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.3.RELEASE</version> </parent> <dependencies> <!-- 引入spring-boot-starter-web 以包含spring webmvc和tomcat等web開發的特性 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> <exclusions> <exclusion> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-logging</artifactId> </exclusion> </exclusions> </dependency> <!-- 連線池 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.10</version> </dependency> <!-- mysql --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <!-- mybatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.4</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.1.1</version> </dependency> <!-- thymeleaf 模板 --> <dependency> <groupId>org.springframework.boot </groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <!-- log4j2 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-log4j2</artifactId> </dependency> <!-- 日誌工具 <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-logging-juli</artifactId> <version>8.0.23</version> </dependency> --> <!-- spring mvc --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${spring.version}</version> <type>jar</type> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>${spring.version}</version> <type>jar</type> </dependency> <!-- aop 依賴 --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>1.6.11</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.6.11</version> </dependency> </dependencies> <build> <finalName>website_java4</finalName> <plugins> <plugin> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> <!-- 增加main方式啟動的配置，若使用maven的spring-boot:run方式啟動則不需要此配置 --> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <!-- 設定主類入口 --> <mainClass>com.whowii.website4.AppBoot</mainClass> <!-- 設定classpath --> <addClasspath>true</addClasspath> <classpathPrefix>lib/</classpathPrefix> </configuration> </plugin> </plugins> </build> <properties> <!-- spring 版本 --> <spring.version>4.3.8.RELEASE</spring.version> <!-- java 版本 --> <java.version>1.8</java.version> <!-- 設定編碼 --> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> </project>
2、修改 spring boot 配置
修改配置檔案“application.properties”，刪除 sqlite 配置，並增加 druid 和 mysql 相關配置，完成後的程式碼如下：
# tomcat 埠
server.port=8080
# spring mvc 配置（檢視解析器）
spring.mvc.view.prefix=/WEB-INF/view/
spring.mvc.view.suffix=.jsp
# log4j2 配置
logging.config=classpath\:log4j2.xml
# 關閉thymeleaf快取，僅在開發時使用
spring.thymeleaf.cache=false
# 檢查模板是否存在，然後再呈現
spring.thymeleaf.check-template-location=true
# Content-Type值
spring.thymeleaf.content-type=text/html
# 在構建URL時預先檢視名稱的字首
spring.thymeleaf.prefix=classpath:/templates/
# 構建URL時附加檢視名稱的字尾.
spring.thymeleaf.suffix=.html
# JDBC 配置
spring.datasource.druid.url=jdbc:mysql://localhost:3306/website_java4?useUnicode=true&characterEncoding=UTF-8
spring.datasource.druid.username=root
spring.datasource.druid.password=root
# 開啟PSCache，並且指定每個連線上PSCache的大小（防火牆這一塊一定不能開，sqlite不支援，會導致奇怪的異常）
spring.datasource.poolPreparedStatements=true
spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
# 配置監控統計攔截的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
# 通過connectProperties屬性來開啟mergeSql功能；慢SQL記錄
spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
# 合併多個DruidDataSource的監控資料
spring.datasource.useGlobalDataSourceStat=true
# 連線池配置
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.druid.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.druid.initial-size=5
spring.datasource.druid.max-active=100
spring.datasource.druid.min-idle=5
## 配置獲取連線等待超時的時間
spring.datasource.druid.max-wait=60000
## 開啟PSCache，並且指定每個連線上PSCache的大小
spring.datasource.druid.pool-prepared-statements=true
spring.datasource.druid.max-pool-prepared-statement-per-connection-size=20
spring.datasource.druid.validation-query=SELECT 1 FROM DUAL
spring.datasource.druid.validation-query-timeout=60000
spring.datasource.druid.test-on-borrow=false
spring.datasource.druid.test-on-return=false
spring.datasource.druid.test-while-idle=true
## 配置間隔多久才進行一次檢測，檢測需要關閉的空閒連線，單位是毫秒
spring.datasource.druid.time-between-eviction-runs-millis=60000
## 配置一個連線在池中最小生存的時間，單位是毫秒
spring.datasource.druid.min-evictable-idle-time-millis=100000
# 監控配置
# WebStatFilter配置，說明請參考Druid Wiki，配置_配置WebStatFilter
spring.datasource.druid.web-stat-filter.enabled=true
spring.datasource.druid.web-stat-filter.url-pattern=/*
spring.datasource.druid.web-stat-filter.exclusions=*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*
# StatViewServlet配置，說明請參考Druid Wiki，配置_StatViewServlet配置
spring.datasource.druid.stat-view-servlet.enabled=true
spring.datasource.druid.stat-view-servlet.url-pattern=/druid/*
spring.datasource.druid.stat-view-servlet.reset-enable=false
spring.datasource.druid.stat-view-servlet.login-username=admin
spring.datasource.druid.stat-view-servlet.login-password=admin
spring.datasource.druid.stat-view-servlet.allow=127.0.0.1
#訪問黑名單
spring.datasource.druid.stat-view-servlet.deny=192.168.32.139
# Filter 配置
# 配置StatFilter
spring.datasource.druid.filter.stat.db-type=mysql
spring.datasource.druid.filter.stat.log-slow-sql=true
spring.datasource.druid.filter.stat.slow-sql-millis=5000
# 配置WallFilter
spring.datasource.druid.filter.wall.enabled=true
spring.datasource.druid.filter.wall.db-type=mysql
spring.datasource.druid.filter.wall.config.delete-allow=false
spring.datasource.druid.filter.wall.config.drop-table-allow=false
# mybatis 配置
mybatis.mapper-locations=classpath:mapper/sysuser-mapper.xml
mybatis.typeAliasesPackage=com.whowii.website4.admin.model
3、增加 druid 配置類
在包“com.whowii.website4”下新增java類“DruidDataSource”，程式碼如下:
package com.whowii.website4;
import javax.sql.DataSource;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder;
@Configuration
@ConditionalOnClass(com.alibaba.druid.pool.DruidDataSource.class)
@ConditionalOnProperty(name = "spring.datasource.type", havingValue = "com.alibaba.druid.pool.DruidDataSource", matchIfMissing = true)
public class DruidDataSource {
@Bean
@ConfigurationProperties("spring.datasource.druid")
public DataSource dataSourceOne() {
return DruidDataSourceBuilder.create().build();
}
}
4、測試結果
使用者S名和密碼都是上面配置的（均是admin），登入後如下：
點選“SQL監控”可以看到頁面執行的SQL語句：
