druid在spring boot中的使用

男娘i 2022-06-17 06:50 243阅读 0赞

前面已经写过一篇druid的初识[http://blog.csdn.net/u013218587/article/details/70212422][http_blog.csdn.net_u013218587_article_details_70212422]，现在再来整理一下druid在spring boot中的使用，spring本身不支持druid数据源，需要自己定义，下面是定义过程，准备工作去掉之前的datasource(c3p0,dbcp,dbcp2等)，如果你想配置多数据源，除外，

关于如何配置多数据源，自行百度。

为了更清晰我把druid相关放在一个包下面,有三个类

package com.pillar.controller.druid;
    
    import com.alibaba.druid.pool.DruidDataSource;
    import org.apache.ibatis.session.SqlSessionFactory;
    import org.mybatis.spring.SqlSessionFactoryBean;
    import org.mybatis.spring.annotation.MapperScan;
    import org.springframework.beans.factory.annotation.Qualifier;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.context.annotation.Primary;
    import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
    import org.springframework.jdbc.datasource.DataSourceTransactionManager;
    
    import javax.sql.DataSource;
    import java.sql.SQLException;
    
    @Configuration
    @MapperScan(basePackages = ClusterDataSourceConfig.PACKAGE, sqlSessionFactoryRef = "pillarSqlSessionFactory")
    public class ClusterDataSourceConfig {
    
        static final String PACKAGE = "com.pillar.core";
        private static final String MAPPER_LOCATION = "classpath:sqlmap/**/*.xml";
        private static final String MYBATIS_CONFIG = "classpath:mybatis-config.xml";
    
        @Value("${spring.datasource.url}")
        private String url;
     
        @Value("${spring.datasource.username}")
        private String user;
     
        @Value("${spring.datasource.password}")
        private String password;
     
        @Value("${spring.datasource.driverClassName}")
        private String driverClass;
    
        @Value("${spring.datasource.initialSize}")
        private int initialSize;
    
        @Value("${spring.datasource.minIdle}")
        private int minIdle;
    
        @Value("${spring.datasource.maxActive}")
        private int maxActive;
    
        @Value("${spring.datasource.filters}")
        private String filters;
    
        @Bean(name = "pillarDataSource")
        @Primary
        public DataSource pillarDataSource() {
            DruidDataSource dataSource = new DruidDataSource();
            dataSource.setDriverClassName(driverClass);
            dataSource.setUrl(url);
            dataSource.setUsername(user);
            dataSource.setPassword(password);
            dataSource.setMaxActive(maxActive);
            dataSource.setMinIdle(minIdle);
            dataSource.setInitialSize(initialSize);
            try {
                dataSource.setFilters(filters);
            } catch (SQLException e) {
                e.printStackTrace();
            }
            dataSource.setConnectionProperties("config.decrypt=true;config.decrypt.key=MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAKbkwDlvul62rcbK0gMZQrOXhXzH5G+3g8rFJMCA1IsXtYZOdJSG1f56smZPmfFulIFxxqh20BLa1VBU9k+7fkECAwEAAQ==");
            return dataSource;
        }
     
        @Bean(name = "pillarTransactionManager")
        @Primary
        public DataSourceTransactionManager pillarTransactionManager() {
            return new DataSourceTransactionManager(pillarDataSource());
        }
     
        @Bean(name = "pillarSqlSessionFactory")
        @Primary
        public SqlSessionFactory pillarSqlSessionFactory(@Qualifier("pillarDataSource") DataSource pillarDataSource)
                throws Exception {
            final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
            sessionFactory.setDataSource(pillarDataSource);
            sessionFactory.setConfigLocation(new PathMatchingResourcePatternResolver().getResource(ClusterDataSourceConfig.MYBATIS_CONFIG));
            sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
                    .getResources(ClusterDataSourceConfig.MAPPER_LOCATION));
            return sessionFactory.getObject();
        }
    }

package com.pillar.controller.druid;
    
    import com.alibaba.druid.support.http.WebStatFilter;
    
    import javax.servlet.annotation.WebFilter;
    import javax.servlet.annotation.WebInitParam;
    
    @WebFilter(filterName="druidWebStatFilter",urlPatterns="/*",
        initParams={  
            @WebInitParam(name="exclusions",value="*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*")//忽略资源
       }  
    )  
    public class DruidStatFilter extends WebStatFilter {
      
    }

package com.pillar.controller.druid;
    
    import com.alibaba.druid.support.http.StatViewServlet;
    
    import javax.servlet.annotation.WebInitParam;
    import javax.servlet.annotation.WebServlet;
    
    @WebServlet(urlPatterns="/druid/*",
        initParams={  
             @WebInitParam(name="allow",value=""),// IP白名单(没有配置或者为空，则允许所有访问)
             @WebInitParam(name="deny",value="192.168.1.73"),// IP黑名单 (存在共同时，deny优先于allow)  
             @WebInitParam(name="loginUsername",value="admin"),// 用户名  
             @WebInitParam(name="loginPassword",value="123456"),// 密码  
             @WebInitParam(name="resetEnable",value="false")// 禁用HTML页面上的“Reset All”功能  
    })  
    public class DruidStatViewServlet extends StatViewServlet {
        private static final long serialVersionUID = -2688872071445249539L;  
      
    }

分别是定义druid，过滤静态文件(让druid/index.html可以访问)，设置监控页面权限

最后在启动入口加入

@ServletComponentScan

/** * Created by bin on 2017/3/27. */ @SpringBootApplication
    @EnableScheduling
    @ServletComponentScan//druid页面访问必须加这个
    public class SpringBootTopApplication {
        public static void main(String[] args) {
            SpringApplication.run(SpringBootTopApplication.class,args);
        }
    }

启动项目。浏览器输入

http://localhost:9090/druid/login.html,即可进入登录页面，输入上面设置的用户名密码即可

线上测试[http://www.chengxuyuantoutiao.com/][http_www.chengxuyuantoutiao.com] 打开网页进入swagger-api下面的"程序猿"里面操作api，"系统监控"里面查看监控信息

[http_blog.csdn.net_u013218587_article_details_70212422]: http://blog.csdn.net/u013218587/article/details/70212422
[http_www.chengxuyuantoutiao.com]: http://www.chengxuyuantoutiao.com/