【千锋逆战】Mybatis的日志以及动态sql

1.项目中添加junit,mysql,mybatis以及log4j的依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.qfedu</groupId>
    <artifactId>Days25MyBatis04</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.44</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.4</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.6</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
    </dependencies>
</project>

2.Mybatis.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">

<!--
    该配置文件中包含一个configuration节点
        里面有配置信息 分别是环境和映射
         其中环境里有datasource,里面有我们熟悉的连接数据库的四个字符串
-->
<configuration>

    <!--
        引入db的配置文件信息,后面用到的四个连接字符串就可以直接使用 ${}的方式来动态引入
    -->
    <properties resource="db.properties">
    </properties>

    <!--
        给当前mybatis项目添加日志功能,该STDOUT_LOGGING值的好处是不用添加第三方jar包就可以有日志的输出
    -->
    <settings>
        <setting name="logImpl" value="LOG4J"/>
    </settings>

    <typeAliases>
        <!--<typeAlias type="com.qfedu.pojo.Order" alias="abc" />-->
        <package name="com.qfedu.pojo" />
    </typeAliases>

    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="${driver}"/>
                <property name="url" value="${url}"/>
                <property name="username" value="${user}"/>
                <property name="password" value="${pass}"/>
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <!--<mapper resource="com/qfedu/pojo/IUserDao.xml"/>-->
        <package name="com.qfedu.pojo" />
    </mappers>
</configuration>

3.db.properties

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/hello
user=root
pass=123456

4.log4j.properties

# 全局日志配置
#   日志有四个级别:degbug,warn,info,debug
log4j.rootLogger=debug, stdout, F
# MyBatis 日志配置
log4j.logger.com.qfedu=TRACE
# 控制台输出
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%6p [%t] - %m%n

log4j.appender.F = org.apache.log4j.DailyRollingFileAppender
log4j.appender.F.File =myproj.log
log4j.appender.F.Append = true
log4j.appender.F.Threshold = DEBUG
log4j.appender.F.layout=org.apache.log4j.PatternLayout
log4j.appender.F.layout.ConversionPattern=%-d{yyyy-MM-dd HH\:mm\:ss}-[%p %F\:%L]  %m%n

5.User.java

package com.qfedu.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {

    private int uid;
    private String username;
    private String password;
    private int age;
    private String addr;
}

6.IUserDao.java

package com.qfedu.pojo;

import org.apache.ibatis.annotations.Select;

import java.util.List;

public interface IUserDao {

    @Select("select * from user")
    List<User> getAll();
}

7.IUserDao.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<!--
    第二种实现mybatis的方式为:接口+xml方式
    这种方式有特别的要求
        1.  namespace必须是接口的全路径
        2.  每个节点的id必须是接口中的方法名
        3.  该接口中的方法不允许重载,否则namespace+id将不唯一
        4.  注意该接口中的增删改的方法的返回值,最好使用int
-->
<mapper namespace="com.qfedu.pojo.IUserDao">

    <sql id="all">
        select * from user
    </sql>

    <select id="selectAll" resultType="user">
        <include refid="all"/>
    </select>

    <select id="selectUserByUid" resultType="user">
        <include refid="all"/>
        where uid = #{uid}
    </select>

    <select id="selectIf" resultType="user">
        <include refid="all"/>
        <where>
            <if test="username != null">
                username = #{username}
            </if>
            <if test="password != null">
                and password = #{password}
            </if>
        </where>
    </select>

    <select id="selectIn" resultType="user">
        <include refid="all" />
        <where>
            uid in
            <foreach collection="ids" item="id" index="index" open="(" close=")" separator=",">
                #{id}
            </foreach>
        </where>
    </select>
</mapper>

8.SessionUtils.java

package com.qfedu.util;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;

public class SessionUtils {

    private static SqlSession mSession = null;
    private static SqlSessionFactory mFactory = null;

    static {
        try {
            mFactory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsStream("mybatis.xml"));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }


    /**
     * 获取SqlSession对象
     * @return
     */
    public static SqlSession getSession(){

        mSession = mFactory.openSession(true);

        return mSession;
    }

    /**
     * 关闭SqlSession对象
     * @param session 要关闭的SqlSession对象
     */
    public static void closeSession(SqlSession session){
        if(session != null){
            session.close();
            session = null;
        }
    }
}

控制台打印的日志结果

/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/bin/java -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:/Applications/IntelliJ IDEA.app/Contents/lib/idea_rt.jar=53701:/Applications/IntelliJ IDEA.app/Contents/bin" -Dfile.encoding=UTF-8 -classpath "/Applications/IntelliJ IDEA.app/Contents/lib/idea_rt.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/junit/lib/junit-rt.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/junit/lib/junit5-rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/deploy.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/ext/cldrdata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/ext/jaccess.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/ext/jfxrt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/ext/nashorn.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/javaws.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/jfxswt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/plugin.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/lib/ant-javafx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/lib/dt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/lib/javafx-mx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/lib/jconsole.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/lib/packager.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/lib/sa-jdi.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/lib/tools.jar:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/test-classes:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes:/Users/james/Documents/doc/repository/junit/junit/4.12/junit-4.12.jar:/Users/james/Documents/doc/repository/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar:/Users/james/Documents/doc/repository/mysql/mysql-connector-java/5.1.44/mysql-connector-java-5.1.44.jar:/Users/james/Documents/doc/repository/org/mybatis/mybatis/3.4.4/mybatis-3.4.4.jar:/Users/james/Documents/doc/repository/org/projectlombok/lombok/1.18.6/lombok-1.18.6.jar:/Users/james/Documents/doc/repository/log4j/log4j/1.2.17/log4j-1.2.17.jar" com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 -junit4 com.qfedu.test.TestLog,testLog
 DEBUG [main] - Logging initialized using 'class org.apache.ibatis.logging.log4j.Log4jImpl' adapter.
 DEBUG [main] - Class not found: org.jboss.vfs.VFS
 DEBUG [main] - JBoss 6 VFS API is not available in this environment.
 DEBUG [main] - Class not found: org.jboss.vfs.VirtualFile
 DEBUG [main] - VFS implementation org.apache.ibatis.io.JBoss6VFS is not valid in this environment.
 DEBUG [main] - Using VFS adapter org.apache.ibatis.io.DefaultVFS
 DEBUG [main] - Find JAR URL: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo
 DEBUG [main] - Not a JAR: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo
 DEBUG [main] - Reader entry: IUserDao.class
 DEBUG [main] - Reader entry: IUserDao.xml
 DEBUG [main] - Reader entry: User.class
 DEBUG [main] - Listing file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo
 DEBUG [main] - Find JAR URL: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo/IUserDao.class
 DEBUG [main] - Not a JAR: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo/IUserDao.class
 DEBUG [main] - Reader entry: ����4��
 DEBUG [main] - Find JAR URL: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo/IUserDao.xml
 DEBUG [main] - Not a JAR: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo/IUserDao.xml
 DEBUG [main] - Reader entry: <?xml version="1.0" encoding="UTF-8" ?>
 DEBUG [main] - Find JAR URL: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo/User.class
 DEBUG [main] - Not a JAR: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo/User.class
 DEBUG [main] - Reader entry: ����4n    �Q  �R  �S  �T  �U�V
 DEBUG [main] - Checking to see if class com.qfedu.pojo.IUserDao matches criteria [is assignable to Object]
 DEBUG [main] - Checking to see if class com.qfedu.pojo.User matches criteria [is assignable to Object]
 DEBUG [main] - Logging initialized using 'class org.apache.ibatis.logging.log4j.Log4jImpl' adapter.
 DEBUG [main] - PooledDataSource forcefully closed/removed all connections.
 DEBUG [main] - PooledDataSource forcefully closed/removed all connections.
 DEBUG [main] - PooledDataSource forcefully closed/removed all connections.
 DEBUG [main] - PooledDataSource forcefully closed/removed all connections.
 DEBUG [main] - Find JAR URL: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo
 DEBUG [main] - Not a JAR: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo
 DEBUG [main] - Reader entry: IUserDao.class
 DEBUG [main] - Reader entry: IUserDao.xml
 DEBUG [main] - Reader entry: User.class
 DEBUG [main] - Listing file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo
 DEBUG [main] - Find JAR URL: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo/IUserDao.class
 DEBUG [main] - Not a JAR: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo/IUserDao.class
 DEBUG [main] - Reader entry: ����4��
 DEBUG [main] - Find JAR URL: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo/IUserDao.xml
 DEBUG [main] - Not a JAR: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo/IUserDao.xml
 DEBUG [main] - Reader entry: <?xml version="1.0" encoding="UTF-8" ?>
 DEBUG [main] - Find JAR URL: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo/User.class
 DEBUG [main] - Not a JAR: file:/Users/james/Documents/NZ1903/lesson/Days25MyBatis04/target/classes/com/qfedu/pojo/User.class
 DEBUG [main] - Reader entry: ����4n    �Q  �R  �S  �T  �U�V
 DEBUG [main] - Checking to see if class com.qfedu.pojo.IUserDao matches criteria [is assignable to Object]
 DEBUG [main] - Checking to see if class com.qfedu.pojo.User matches criteria [is assignable to Object]
 DEBUG [main] - Opening JDBC Connection
Fri Mar 13 16:43:20 CST 2020 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
 DEBUG [main] - Created connection 452805835.
 DEBUG [main] - ==>  Preparing: select * from user 
 DEBUG [main] - ==> Parameters: 
 TRACE [main] - <==    Columns: uid, username, password, age, addr
 TRACE [main] - <==        Row: 1, sunwukong, 111111, 500, huaguoshan
 TRACE [main] - <==        Row: 2, zhubajie, 222222, 2000, gaolaozhuang
 TRACE [main] - <==        Row: 3, shaheshang, 333333, 500, liushahe
 TRACE [main] - <==        Row: 4, tangtang, 444444, 20, datangwangchao
 TRACE [main] - <==        Row: 5, baikongma, 555555, 100, longgong
 TRACE [main] - <==        Row: 6, lisixin6, lisixin, 20, beijing
 TRACE [main] - <==        Row: 7, baigujing, 888888, 800, baigudong
 TRACE [main] - <==        Row: 8, username8, 888888, 20, test
 TRACE [main] - <==        Row: 16, lisixin, lisixin, 20, beijing
 TRACE [main] - <==        Row: 17, chenggang, 888888, 20, shenzhen
 TRACE [main] - <==        Row: 18, lishushu, 888888, 20, beijing
 TRACE [main] - <==        Row: 19, liuchang, 888888, 20, guangzhou
 TRACE [main] - <==        Row: 20, xiaoyao, 777777, 16, wuhan
 DEBUG [main] - <==      Total: 13
User(uid=1, username=sunwukong, password=111111, age=500, addr=huaguoshan)
User(uid=2, username=zhubajie, password=222222, age=2000, addr=gaolaozhuang)
User(uid=3, username=shaheshang, password=333333, age=500, addr=liushahe)
User(uid=4, username=tangtang, password=444444, age=20, addr=datangwangchao)
User(uid=5, username=baikongma, password=555555, age=100, addr=longgong)
User(uid=6, username=lisixin6, password=lisixin, age=20, addr=beijing)
User(uid=7, username=baigujing, password=888888, age=800, addr=baigudong)
User(uid=8, username=username8, password=888888, age=20, addr=test)
User(uid=16, username=lisixin, password=lisixin, age=20, addr=beijing)
User(uid=17, username=chenggang, password=888888, age=20, addr=shenzhen)
User(uid=18, username=lishushu, password=888888, age=20, addr=beijing)
User(uid=19, username=liuchang, password=888888, age=20, addr=guangzhou)
User(uid=20, username=xiaoyao, password=777777, age=16, addr=wuhan)
 DEBUG [main] - Closing JDBC Connection [com.mysql.jdbc.JDBC4Connection@1afd44cb]
 DEBUG [main] - Returned connection 452805835 to pool.

Process finished with exit code 0
©著作权归作者所有,转载或内容合作请联系作者
  • 序言:七十年代末,一起剥皮案震惊了整个滨河市,随后出现的几起案子,更是在滨河造成了极大的恐慌,老刑警刘岩,带你破解...
    沈念sama阅读 159,117评论 4 362
  • 序言:滨河连续发生了三起死亡事件,死亡现场离奇诡异,居然都是意外死亡,警方通过查阅死者的电脑和手机,发现死者居然都...
    沈念sama阅读 67,328评论 1 293
  • 文/潘晓璐 我一进店门,熙熙楼的掌柜王于贵愁眉苦脸地迎上来,“玉大人,你说我怎么就摊上这事。” “怎么了?”我有些...
    开封第一讲书人阅读 108,839评论 0 243
  • 文/不坏的土叔 我叫张陵,是天一观的道长。 经常有香客问我,道长,这世上最难降的妖魔是什么? 我笑而不...
    开封第一讲书人阅读 44,007评论 0 206
  • 正文 为了忘掉前任,我火速办了婚礼,结果婚礼上,老公的妹妹穿的比我还像新娘。我一直安慰自己,他们只是感情好,可当我...
    茶点故事阅读 52,384评论 3 287
  • 文/花漫 我一把揭开白布。 她就那样静静地躺着,像睡着了一般。 火红的嫁衣衬着肌肤如雪。 梳的纹丝不乱的头发上,一...
    开封第一讲书人阅读 40,629评论 1 219
  • 那天,我揣着相机与录音,去河边找鬼。 笑死,一个胖子当着我的面吹牛,可吹牛的内容都是我干的。 我是一名探鬼主播,决...
    沈念sama阅读 31,880评论 2 313
  • 文/苍兰香墨 我猛地睁开眼,长吁一口气:“原来是场噩梦啊……” “哼!你这毒妇竟也来了?” 一声冷哼从身侧响起,我...
    开封第一讲书人阅读 30,593评论 0 198
  • 序言:老挝万荣一对情侣失踪,失踪者是张志新(化名)和其女友刘颖,没想到半个月后,有当地人在树林里发现了一具尸体,经...
    沈念sama阅读 34,313评论 1 243
  • 正文 独居荒郊野岭守林人离奇死亡,尸身上长有42处带血的脓包…… 初始之章·张勋 以下内容为张勋视角 年9月15日...
    茶点故事阅读 30,575评论 2 246
  • 正文 我和宋清朗相恋三年,在试婚纱的时候发现自己被绿了。 大学时的朋友给我发了我未婚夫和他白月光在一起吃饭的照片。...
    茶点故事阅读 32,066评论 1 260
  • 序言:一个原本活蹦乱跳的男人离奇死亡,死状恐怖,灵堂内的尸体忽然破棺而出,到底是诈尸还是另有隐情,我是刑警宁泽,带...
    沈念sama阅读 28,392评论 2 253
  • 正文 年R本政府宣布,位于F岛的核电站,受9级特大地震影响,放射性物质发生泄漏。R本人自食恶果不足惜,却给世界环境...
    茶点故事阅读 33,052评论 3 236
  • 文/蒙蒙 一、第九天 我趴在偏房一处隐蔽的房顶上张望。 院中可真热闹,春花似锦、人声如沸。这庄子的主人今日做“春日...
    开封第一讲书人阅读 26,082评论 0 8
  • 文/苍兰香墨 我抬头看了看天上的太阳。三九已至,却和暖如春,着一层夹袄步出监牢的瞬间,已是汗流浃背。 一阵脚步声响...
    开封第一讲书人阅读 26,844评论 0 195
  • 我被黑心中介骗来泰国打工, 没想到刚下飞机就差点儿被人妖公主榨干…… 1. 我叫王不留,地道东北人。 一个月前我还...
    沈念sama阅读 35,662评论 2 274
  • 正文 我出身青楼,却偏偏与公主长得像,于是被迫代替她去往敌国和亲。 传闻我的和亲对象是个残疾皇子,可洞房花烛夜当晚...
    茶点故事阅读 35,575评论 2 270

推荐阅读更多精彩内容