教你一步到位部署執行MyBatis3原始碼(保姆級)

      <!-- <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-pdf-plugin</artifactId>
      </plugin>-->

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <junit.version>4.13.2</junit.version>
    <mybatis.version>3.5.3</mybatis.version>
    <mysql.version>8.0.11</mysql.version>
    <druid.version>1.1.9</druid.version>
  </properties>

  <dependencies>
    <!-- log4j -->
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>
    <!-- Mybatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatis.version}</version>
    </dependency>
    <!-- MySql -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysql.version}</version>
    </dependency>
    <!-- 連線池 -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>${druid.version}</version>
    </dependency>
    <!-- Junit -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>${junit.version}</version>
      <scope>test</scope>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.javassist/javassist -->
    <dependency>
      <groupId>org.javassist</groupId>
      <artifactId>javassist</artifactId>
      <version>3.26.0-GA</version>
    </dependency>
  </dependencies>

  <build>
    <!-- 載入組態檔 -->
    <resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.xml</include>
        </includes>
      </resource>
    </resources>
  </build>

<?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">
<configuration>
    <settings>
        <setting name="logImpl" value="STDOUT_LOGGING" />
    </settings>
    <typeAliases>
        <package name="com.yang.entity"/>
    </typeAliases>
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"></transactionManager>
            <dataSource type="POOLED">
                 <!-- dirver根據自身mysql版本來 -->
                <property name="driver" value="com.mysql.cj.jdbc.Driver"/>
                <property name="username" value="root"/>
                <property name="password" value="root123456"/>
                <!-- mysql8要加：serverTimezone=Asia/Shanghai&amp;useSSL=false&amp;allowPublicKeyRetrieval=true-->
                <property name="url" value="jdbc:mysql://localhost:3306/news?characterEncoding=utf8&amp;serverTimezone=Asia/Shanghai&amp;useSSL=false&amp;allowPublicKeyRetrieval=true"/>
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <package name="com.yang.mapper"/>
    </mappers>
</configuration>

    @Test
    public void test() throws IOException {
        InputStream input = Resources.getResourceAsStream("SqlSessionConfig.xml");
        SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder().build(input);
        SqlSession sqlSession = sessionFactory.openSession();
        LevelDao dao = sqlSession.getMapper(LevelDao.class);
        List<Level> all = dao.findAll();
        for (Level level : all) {
            System.out.println(level);
        }
    }