站长百科 太妙了！Spring boot 整合 Mybatis Druid，还能配置监控？ 正文

太妙了！Spring boot 整合 Mybatis Druid，还能配置监控？

2022-12-05,,,,

Spring boot 整合 Mybatis Druid并配置监控

添加依赖

<!--druid-->

<dependency>

    <groupId>com.alibaba</groupId>

    <artifactId>druid-spring-boot-starter</artifactId>

    <version>1.1.16</version>

</dependency>

<!--mybatis-->

        <dependency>

            <groupId>org.mybatis.spring.boot</groupId>

            <artifactId>mybatis-spring-boot-starter</artifactId>

            <version>1.3.2</version>

        </dependency>

<!--mysql-->

        <dependency>

            <groupId>mysql</groupId>

            <artifactId>mysql-connector-java</artifactId>

        </dependency>

如果使用log4j需要添加log4j的依赖并且排除本身slf4j

<dependency>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-log4j</artifactId>

    <version>1.3.8.RELEASE</version>

</dependency>

<dependency>

     <groupId>org.springframework.boot</groupId>

     <artifactId>spring-boot-starter-web</artifactId>

   <!--排除本身日志-->

     <exclusions>

         <exclusion>

             <groupId>org.springframework.boot</groupId>

             <artifactId>spring-boot-starter-logging</artifactId>

         </exclusion>

     </exclusions>

</dependency>

​ 附上log4j.properties的配置

# LOG4J rootCategory config

# 控制台输出

log4j.rootLogger=INFO, file, console

LocationInfo =true

log4j.appender.console=org.apache.log4j.ConsoleAppender

log4j.appender.console.Target=System.out

log4j.appender.console.layout=org.apache.log4j.PatternLayout

log4j.appender.console.layout.ConversionPattern=%d{yyyy-MM HH:mm:ss} %5p %c{1}:%L - %m%n

# 日志文件

log4j.appender.file=org.apache.log4j.DailyRollingFileAppender

log4j.appender.file.file=logs/springboot.log

log4j.appender.file.DatePattern='.'yyyy-MM-dd

log4j.appender.file.layout=org.apache.log4j.PatternLayout

log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM HH:mm:ss} %5p %c{1}:%L - %m%n

2.提前创建一个controller，dao，service，用于查询数据库，测试

dao

import com.ljy.sys.entity.User;

import java.util.List;

public interface SysUserMapper {

    List<User> findAll();

}

Mapper

service及其实现类

import com.ljy.sys.entity.User;

import java.util.List;

public interface SysUserService {

    List<User> findAll();

}


import com.ljy.sys.dao.SysUserMapper;

import com.ljy.sys.entity.User;

import com.ljy.sys.model.SysUserService;

import org.springframework.stereotype.Service;

import javax.annotation.Resource;

import java.util.List;

/**

 * SysUserService实现类

 * @author ljy&jcq

 */

@Service

public class SysUserServiceImpl implements SysUserService {

    @Resource

    private SysUserMapper sysUserMapper;

    @Override

    public List<User> findAll() {

        return sysUserMapper.findAll();

    }

}

controller

import com.ljy.sys.model.SysUserService;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

@RestController

@RequestMapping("user")

public class SysUserController {

    @Autowired

    private SysUserService sysUserService;

    @GetMapping("/findAll")

    public Object findAll(){

        return sysUserService.findAll();

    }

}

编写Mybatis的配置类

import org.apache.ibatis.session.SqlSessionFactory;

import org.mybatis.spring.SqlSessionFactoryBean;

import org.mybatis.spring.annotation.MapperScan;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.core.io.support.PathMatchingResourcePatternResolver;

import javax.sql.DataSource;

/**

 * mybatis 配置类

 * @author ljy&jcq

 * MapperScan 扫描dao

 *

 */

@Configuration

@MapperScan("com.ljy.sys.**.dao")

public class MybatisConfig {

    @Autowired

    private DataSource dataSource;

    @Bean

    public SqlSessionFactory sqlSessionFactory() throws Exception{

        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();

        sqlSessionFactoryBean.setDataSource(dataSource);

        //扫描service层

        sqlSessionFactoryBean.setTypeAliasesPackage("com.ljy.sys.**.model");

        PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();

        //扫描映射文件 Mapper文件所在的地址

        sqlSessionFactoryBean.setMapperLocations(resolver.getResources("classpath*:/templates/*.xml"));

        return sqlSessionFactoryBean.getObject();

    }

}

修改启动类

//表示在应用启动时自动扫描com.ljy.sys包下的内容，当然Spring Boot也会自动扫描启动类包及其子包，这里不设置也是可以自动扫描的

@SpringBootApplication(scanBasePackages = {"com.ljy.sys"})

public class SysApplication {

    public static void main(String[] args) {

        SpringApplication.run(SysApplication.class, args);

    }

}

编写application.yml 配置druid的属性

spring:

  datasource:

    #数据库连接配置

    type: com.alibaba.druid.pool.DruidDataSource

    driver-class-name: com.mysql.cj.jdbc.Driver

    url: jdbc:mysql://127.0.0.1:3306/salery?serverTimezone=GMT%2B8&characterEncoding=UTF-8

    username: root

    password: root

    #连接池配置

    initial-size: 5  # 初始化大小

    min-idle: 5  # 最小

    max-active: 100  # 最大

    max-wait: 60000  # 连接超时时间

    time-between-eviction-runs-millis: 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

    min-evictable-idle-time-millis: 300000  # 指定一个空闲连接最少空闲多久后可被清除，单位是毫秒

    validationQuery: selectversion()

    test-while-idle: true  # 当连接空闲时，是否执行连接测试

    test-on-borrow: false  # 当从连接池借用连接时，是否测试该连接

    test-on-return: false  # 在连接归还到连接池时是否测试该连接

    filters: wall,stat,log4j  # 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,log4j使用哪种日志系统就添加哪种

    poolPreparedStatements: true

    maxPoolPreparedStatementPerConnectionSize: 20

    maxOpenPreparedStatements: 20

    connectionProperties: druid.stat.slowSqlMillis=200;druid.stat.logSlowSql=true

编写配置类

import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder;

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

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

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 org.springframework.context.annotation.Primary;

import javax.sql.DataSource;

/**

 *  druid的配置类

 * @author jcq&ljy

 */

@Configuration

public class DruidConfig {

    @Bean(name = "dataSource")

    //这里使用的是自动注入spring.datasource下的各种属性，如需要自定义配置，可新建配置类使用

    //自定义配置类类名上添加@ConfigurationProperties(prefix = "spring.datasource.druid")导入yml中设置的数据

    //在本配置类上加入@EnableConfigurationProperties({自定义.class}) 导入自定义配置 在本方法中手动set注入 参考注释的方法

    @ConfigurationProperties("spring.datasource")

    @Primary

    public DataSource masterDataSource() {

        return DruidDataSourceBuilder.create().build();

    }

	    /**

     * 	手动set注入

     *     @Bean

     *     public DataSource druidDataSource() {

     *         DruidDataSource datasource = new DruidDataSource();;

     *         datasource.setUrl(properties.getUrl());

     *         datasource.setUsername(properties.getUsername());

     *         datasource.setPassword(properties.getPassword());

     *         datasource.setDriverClassName(properties.getDriverClassName());

     *         datasource.setInitialSize(properties.getInitialSize());

     *         datasource.setMinIdle(properties.getMinIdle());

     *         datasource.setMaxActive(properties.getMaxActive());

     *         datasource.setMaxWait(properties.getMaxWait());

     *         datasource.setTimeBetweenEvictionRunsMillis(properties.getTimeBetweenEvictionRunsMillis());

     *         datasource.setMinEvictableIdleTimeMillis(properties.getMinEvictableIdleTimeMillis());

     *         datasource.setValidationQuery(properties.getValidationQuery());

     *         datasource.setTestWhileIdle(properties.isTestWhileIdle());

     *         datasource.setTestOnBorrow(properties.isTestOnBorrow());

     *         datasource.setTestOnReturn(properties.isTestOnReturn());

     *         properties.setPoolPreparedStatements(properties.isPoolPreparedStatements());

     *         properties.setMaxPoolPreparedStatementPerConnectionSize(properties.getMaxPoolPreparedStatementPerConnectionSize());

     *         properties.setFilters(properties.getFilters());

     *         return datasource;

     *     }

     */

    /**

     * 配置Druid的监控，一个管理后台的Servlet

     * @return

     */

    @Bean

    public ServletRegistrationBean druidServlet() {

        //指定拦截器只拦截druid管理页面的请求

        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");

        // IP白名单，如果没有设置或为空，则表示允许所有访问.（不能写成*，不然会报错）

        servletRegistrationBean.addInitParameter("allow", "");

        // IP黑名单(共同存在时，deny优先于allow)

        servletRegistrationBean.addInitParameter("deny", "192.168.1.19");

        //控制台管理的用户名和密码

        servletRegistrationBean.addInitParameter("loginUsername", "admin");

        servletRegistrationBean.addInitParameter("loginPassword", "admin");

        //是否能够重置数据 禁用HTML页面上的“Reset All”功能

        servletRegistrationBean.addInitParameter("resetEnable", "false");

        return servletRegistrationBean;

    }

    /**

     * 配置一个web监控的filter

     * @return

     */

    @Bean

    public FilterRegistrationBean filterRegistrationBean() {

        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());

        filterRegistrationBean.addUrlPatterns("/*");

        filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");

        return filterRegistrationBean;

    }

}

登录http://localhost:8080/druid/login.html

输入配置类中设置的账号密码，就可以看到如下界面：

但是打开数据源显示如下：

不要担心，只需要向刚才的我们写好的controller发送一次请求即可，发送了请求后结果如下：

​ 尤其需要注意：

​ 如果这一行显示为空，需要检查监听器配置或日志系统是否和yml中的配置匹配。

​ 如果spring监控为空，是因为我们没有设置切面，我们需要设置切面

编写spring监控切面

import com.alibaba.druid.support.spring.stat.DruidStatInterceptor;

import org.springframework.aop.Advisor;

import org.springframework.aop.support.DefaultPointcutAdvisor;

import org.springframework.aop.support.JdkRegexpMethodPointcut;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

/**

 * spring监控配置切面

 * @author jcq&ljy

 */

@Configuration

public class SpringDaoMethodAspect {

    @Bean

    public DruidStatInterceptor druidStatInterceptor(){

        return new DruidStatInterceptor();

    }

    @Bean

    public JdkRegexpMethodPointcut druidStatPointcut(){

        JdkRegexpMethodPointcut druidStatPointcut = new JdkRegexpMethodPointcut();

        String patterns = "com.ljy.*.*.service.*";

        String patterns2 = "com.ljy.*.*.dao.*";

        druidStatPointcut.setPatterns(patterns,patterns2);

        return druidStatPointcut;

    }

    @Bean

    public Advisor druidStatAdvisor() {

        return new DefaultPointcutAdvisor(druidStatPointcut(), druidStatInterceptor());

    }

}

注：如果仍为空，先检查是否导入了aop的依赖

<dependency>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-aop</artifactId>

</dependency>

最后附上成功截图

最后

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