Java Spring Boot: log sql query more efficiently

Problem

• Default SQL Log

spring.jpa.show-sql=true

• But sometimes we need logs with more information such as params, batch batch,... like this one.

Solution

• Step 1. Add lib

<dependency>
    <groupId>net.ttddyy</groupId>
    <artifactId>datasource-proxy</artifactId>
    <version>1.4.1</version>
</dependency>

• Step 2. Add this class

// ...your package name

import java.lang.reflect.Method;

import javax.sql.DataSource;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.stereotype.Component;
import org.springframework.util.ReflectionUtils;

import net.ttddyy.dsproxy.listener.logging.SLF4JLogLevel;
import net.ttddyy.dsproxy.support.ProxyDataSourceBuilder;

@Component
public class DatasourceProxyBeanPostProcessor implements BeanPostProcessor {

    @Override
    public Object postProcessBeforeInitialization(final Object bean, final String beanName) throws BeansException {
        return bean;
    }

    @Override
    public Object postProcessAfterInitialization(final Object bean, final String beanName) throws BeansException {
        if (bean instanceof DataSource) {
            ProxyFactory factory = new ProxyFactory(bean);
            factory.setProxyTargetClass(true);
            factory.addAdvice(new ProxyDataSourceInterceptor((DataSource) bean));
            return factory.getProxy();
        }
        return bean;
    }

    private static class ProxyDataSourceInterceptor implements MethodInterceptor {
        private final DataSource dataSource;

        public ProxyDataSourceInterceptor(final DataSource dataSource) {
            super();
            this.dataSource = ProxyDataSourceBuilder
                    .create(dataSource)
                    .countQuery()
                    .logQueryBySlf4j(SLF4JLogLevel.INFO)
                    .build();
        }

        @Override
        public Object invoke(final MethodInvocation invocation) throws Throwable {
            Method proxyMethod = ReflectionUtils.findMethod(dataSource.getClass(), invocation.getMethod().getName());
            if (proxyMethod != null) {
                return proxyMethod.invoke(dataSource, invocation.getArguments());
            }
            return invocation.proceed();
        }
    }
}

Refs

• This code is copied from the source https://github.com/galovics/datasource-proxy-spring-boot