mybatis拦截器实现查看sql执行效率

import java.sql.Statement;
import java.util.Properties;

import org.apache.ibatis.executor.statement.StatementHandler;
import org.apache.ibatis.logging.commons.JakartaCommonsLoggingImpl;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.plugin.Intercepts;
import org.apache.ibatis.plugin.Invocation;
import org.apache.ibatis.plugin.Plugin;
import org.apache.ibatis.plugin.Signature;
import org.apache.ibatis.session.ResultHandler;

/**
 * Sql执行时间记录拦截器
 */
@Intercepts({
        @Signature(type = StatementHandler.class, method = "query", args = { Statement.class, ResultHandler.class }),
        @Signature(type = StatementHandler.class, method = "update", args = { Statement.class }),
        @Signature(type = StatementHandler.class, method = "batch", args = { Statement.class }) })
public class SqlCostInterceptor implements Interceptor {

    private static final JakartaCommonsLoggingImpl logger = new JakartaCommonsLoggingImpl("SqlCostInterceptor");

    @Override
    public Object intercept(Invocation invocation) throws Throwable {
        long startTime = System.currentTimeMillis();
        StatementHandler statementHandler = (StatementHandler) invocation.getTarget();
        final BoundSql boundSql = statementHandler.getBoundSql();
        try {
            return invocation.proceed();
        } finally {
            final StringBuilder build = new StringBuilder(7);
            build.append("<==  Preparing: ");
            build.append("
");
            build.append(boundSql.getSql());
            build.append("
");
            build.append("MYBATIS-SQL执行耗时[");
            build.append((System.currentTimeMillis() - startTime));
            build.append("ms]");
            logger.debug(build.toString());
        }
    }

    @Override
    public Object plugin(Object target) {
        return Plugin.wrap(target, this);
    }

    @Override
    public void setProperties(Properties properties) {
    }

}