SpringBoot 整合 Mybatis+Druid

此博客簡單介紹springboot項目整合Mybstis + Druid 的項目使用經驗。

項目結構大致如下：
        projectName
              - service
              - controller
                    - config
                    - resources
              - model

首先依賴包：

        <!--mybatis -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.2.0</version>
            <exclusions>
                <exclusion>
                    <groupId>ch.qos.logback</groupId>
                    <artifactId>logback-classic</artifactId>
                </exclusion>
            </exclusions>
        </dependency>    
    
        <!-- Druid數據庫連接池組件 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.18</version>
        </dependency>

        <!-- oracle 驅動 -->
        <dependency>
            <groupId>oracle</groupId>
            <artifactId>ojdbc</artifactId>
            <version>5</version>
        </dependency>

其次在application.yml中加上mybatis與druid配置：

#服務名稱
spring:
  application:
      name: projectName
#數據源地址
  datasource:
     url: jdbc:oracle:thin:@IP:1521:***
     username: username
     password: password
     driver-class-name: oracle.jdbc.driver.OracleDriver
     #druid連接池驅動配置信息
     type: com.alibaba.druid.pool.DruidDataSource
     #連接池配置
     initialSize: 5
     minIdle: 5
     maxActive: 20
     #連接等待超時時間
     maxWait: 60000
     #配置隔多久進行一次檢測(檢測可以關閉的空閒連接)
     timeBetweenEvictionRunsMillis: 60000
     #配置連接在池中的最小生存時間
     minEvictableIdleTimeMillis: 300000
     validationQuery: SELECT 1 FROM DUAL
     testWhileIdle: true
     testOnBorrow: false
     testOnReturn: false
     # 打開PSCache，並且指定每個連接上PSCache的大小
     poolPreparedStatements: true
     maxPoolPreparedStatementPerConnectionSize: 20
     # 配置監控統計攔截的filters，去掉後監控界面sql無法統計，'wall'用於防火牆
     filters: stat,wall,log4j
     # 通過connectProperties屬性來打開mergeSql功能；慢SQL記錄
     connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000

#Mybatis自動識別數據庫駝峯字段
mybatis:
  configuration:
      map-underscore-to-camel-case: true

然後需要在Config中配置druid的相關信息，比如帳號密碼，黑白名單等，具體釋意請另行百度：

import com.alibaba.druid.pool.DruidDataSource;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.sql.DataSource;

/**
 * 連接池使用的數據庫配置
 *
 * @Author: XiongMao
 * @Date: 2019-8-13
 */
@Configuration
public class DruidConfig {
    @Bean
    @ConfigurationProperties(prefix = "spring.datasource")
    public DataSource druidDataSource() {
        DruidDataSource druidDataSource = new DruidDataSource();
        return druidDataSource;
    }
}

import com.alibaba.druid.support.http.WebStatFilter;

import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebInitParam;

/**
 * 攔截器
 *
 * @Author: XiongMao
 * @Date: 2019-8-13
 */
@WebFilter(filterName = "druidWebStatFilter", urlPatterns = "/*",
        initParams = {
                @WebInitParam(name = "exclusions", value = "*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*")// 忽略資源
        })
public class DruidStatFilter extends WebStatFilter {

}

import com.alibaba.druid.support.http.StatViewServlet;

import javax.servlet.annotation.WebInitParam;
import javax.servlet.annotation.WebServlet;

/**
 * servlet配置
 *
 * @Author: XiongMao
 * @Date: 2019-8-13
 */
@SuppressWarnings("serial")
@WebServlet(urlPatterns = "/druid/*",
        initParams={
                @WebInitParam(name="allow",value=""),// IP白名單 (沒有配置或者爲空，則允許所有訪問)
                @WebInitParam(name="deny",value=""),// IP黑名單 (存在共同時，deny優先於allow)
                @WebInitParam(name="loginUsername",value=""),// 用戶名
                @WebInitParam(name="loginPassword",value=""),// 密碼
                @WebInitParam(name="resetEnable",value="false")// 禁用HTML頁面上的“Reset All”功能
        })
public class DruidStatViewServlet extends StatViewServlet {

}

到此配置完成，就可以愉快的使用了。druid 訪問地址爲  IP:PORT/druid