SpringBoot导入Druid连接池，dbType not support —

蔚落 2023-02-15 05:24 152阅读 0赞

在Springboot项目中使用Druid:

maven导入druid依赖：

<dependency>  
        <groupId>com.alibaba</groupId>  
        <artifactId>druid</artifactId>  
        <version>1.1.10</version>  
    </dependency>  
   
druid的使用需要做很多的数据库连接参数配置，关于参数配置可参考Druid项目github地址

在application.properties文件中配置：

\#mybatis数据库连接  
spring.datasource.url=jdbc:mysql://数据库地址  
spring.datasource.username=数据库连接用户名  
spring.datasource.password=数据库连接密码  
\#数据库连接  
\#druid  datasouce database settings begin  
spring.druid.datasource.type=mysql  
spring.druid.datasource.driverClassName=com.mysql.jdbc.Driver  
\# 下面为连接池的补充设置，应用到上面所有数据源中  
spring.druid.datasource.druidLoginName=Druid登录用户名  
spring.druid.datasource.druidLoginPwd=Druid登录密码  
\# 初始化大小，最小，最大  
spring.druid.datasource.initialSize=5  
spring.druid.datasource.minIdle=5  
spring.druid.datasource.maxActive=20  
\# 配置获取连接等待超时的时间  
spring.druid.datasource.maxWait=60000  
\# 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.druid.datasource.timeBetweenEvictionRunsMillis=60000  
\# 配置一个连接在池中最小生存的时间，单位是毫秒  
spring.druid.datasource.minEvictableIdleTimeMillis=300000  
spring.druid.datasource.validationQuery=SELECT 1 FROM DUAL  
spring.druid.datasource.testWhileIdle=true  
spring.druid.datasource.testOnBorrow=false  
spring.druid.datasource.testOnReturn=false  
\# 打开PSCache，并且指定每个连接上PSCache的大小  
spring.druid.datasource.poolPreparedStatements=true  
spring.druid.datasource.maxPoolPreparedStatementPerConnectionSize=20  
\# 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙  
spring.druid.datasource.filters=stat,wall,config  
\# 通过connectProperties属性来打开mergeSql功能；慢SQL记录  
spring.druid.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000  
\# 合并多个DruidDataSource的监控数据  
spring.druid.datasource.useGlobalDataSourceStat=true  
   
要注意数据库type的值，不然再启动的时候会出现：

dbType not support : com.alibaba.druid.pool.DruidDataSource...  
1  
然后代码配置：

import java.sql.SQLException;  
import javax.sql.DataSource;  
import org.springframework.beans.factory.annotation.Value;  
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 com.alibaba.druid.pool.DruidDataSource;  
import com.alibaba.druid.support.http.StatViewServlet;  
import com.alibaba.druid.support.http.WebStatFilter;

/\*\*  
 \* Druid 连接配置  
 \*/  
@Configuration  
public class DruidDataSourceConfig \{

@Value("$\{spring.datasource.url\}")  
    private String dbUrl;

@Value("$\{spring.druid.datasource.type\}")  
    private String dbType;

@Value("$\{spring.datasource.username\}")  
    private String username;

@Value("$\{spring.datasource.password\}")  
    private String password;

@Value("$\{spring.druid.datasource.driverClassName\}")  
    private String driverClassName;

@Value("$\{spring.druid.datasource.initialSize\}")  
    private int initialSize;

@Value("$\{spring.druid.datasource.minIdle\}")  
    private int minIdle;

@Value("$\{spring.druid.datasource.maxActive\}")  
    private int maxActive;

@Value("$\{spring.druid.datasource.maxWait\}")  
    private int maxWait;

@Value("$\{spring.druid.datasource.timeBetweenEvictionRunsMillis\}")  
    private int timeBetweenEvictionRunsMillis;

@Value("$\{spring.druid.datasource.minEvictableIdleTimeMillis\}")  
    private int minEvictableIdleTimeMillis;

@Value("$\{spring.druid.datasource.validationQuery\}")  
    private String validationQuery;

@Value("$\{spring.druid.datasource.testWhileIdle\}")  
    private boolean testWhileIdle;

@Value("$\{spring.druid.datasource.testOnBorrow\}")  
    private boolean testOnBorrow;

@Value("$\{spring.druid.datasource.testOnReturn\}")  
    private boolean testOnReturn;

@Value("$\{spring.druid.datasource.poolPreparedStatements\}")  
    private boolean poolPreparedStatements;

@Value("$\{spring.druid.datasource.filters\}")  
    private String filters;

@Value("$\{spring.druid.datasource.connectionProperties\}")  
    private String connectionProperties;

@Value("$\{spring.druid.datasource.useGlobalDataSourceStat\}")  
    private boolean useGlobalDataSourceStat;

@Value("$\{spring.druid.datasource.druidLoginName\}")  
    private String druidLoginName;

@Value("$\{spring.druid.datasource.druidLoginPwd\}")  
    private String druidPassword;

@Bean(name = "dataSource", destroyMethod = "close", initMethod = "init")  
    @Primary  
    public DataSource dataSource() \{  
        DruidDataSource datasource = new DruidDataSource();  
        try \{  
            datasource.setUrl(this.dbUrl);  
            datasource.setDbType(dbType);  
            datasource.setUsername(username);  
            datasource.setPassword(password);  
            datasource.setDriverClassName(driverClassName);  
            datasource.setInitialSize(initialSize);  
            datasource.setMinIdle(minIdle);  
            datasource.setMaxActive(maxActive);  
            datasource.setMaxWait(maxWait);  
            datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);  
            datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);  
            datasource.setValidationQuery(validationQuery);  
            datasource.setTestWhileIdle(testWhileIdle);  
            datasource.setTestOnBorrow(testOnBorrow);  
            datasource.setTestOnReturn(testOnReturn);  
            datasource.setPoolPreparedStatements(poolPreparedStatements);  
            datasource.setFilters(filters);  
            datasource.setConnectionProperties(connectionProperties);  
            datasource.setUseGlobalDataSourceStat(useGlobalDataSourceStat);  
        \} catch (SQLException e) \{  
           e.printStackTrace();  
        \}  
        return datasource;  
    \}

/  下面是druid 监控访问的设置  /  
    @Bean  
    public ServletRegistrationBean druidServlet() \{  
        ServletRegistrationBean reg = new ServletRegistrationBean();  
        reg.setServlet(new StatViewServlet());  
        reg.addUrlMappings("/druid/\*");  //url 匹配  
        reg.addInitParameter("allow", ""); // IP白名单 (没有配置或者为空，则允许所有访问)  
        reg.addInitParameter("deny", ""); //IP黑名单 (存在共同时，deny优先于allow)  
        reg.addInitParameter("loginUsername", this.druidLoginName);//登录名  
        reg.addInitParameter("loginPassword", this.druidPassword);//登录密码  
        reg.addInitParameter("resetEnable", "false"); // 禁用HTML页面上的“Reset All”功能  
        return reg;  
    \}

@Bean(name = "druidWebStatFilter")  
    public FilterRegistrationBean filterRegistrationBean() \{  
        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();  
        filterRegistrationBean.setFilter(new WebStatFilter());  
        filterRegistrationBean.addUrlPatterns("/\*");  
        filterRegistrationBean.addInitParameter("exclusions", "\*.js,\*.gif,\*.jpg,\*.png,\*.css,\*.ico,/druid/\*"); //忽略资源  
        filterRegistrationBean.addInitParameter("profileEnable", "true");  
        filterRegistrationBean.addInitParameter("principalCookieName", "USER\_COOKIE");  
        filterRegistrationBean.addInitParameter("principalSessionName", "USER\_SESSION");  
        return filterRegistrationBean;  
    \}  
\}