2024年网络安全（黑客）自学总结

导入Spring整合Mybatis依赖

<dependencies>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.2.10.RELEASE</version>
</dependency>

<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.2.10.RELEASE</version>
</dependency>

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-
java</artifactId>
<version>8.0.25</version>
</dependency>

<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.2.8</version>
</dependency>

<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.24</version>
</dependency>

//创建JdbcConfig配置DataSource数据源
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.6</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.10.RELEASE</version>
</dependency>

<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-
spring</artifactId>
<version>1.3.0</version>
</dependency>

</dependencies>

创建JdbcConfig配置DataSource数据源

JDBC配置原

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm_01
jdbc.username=root
jdbc.password=123456

创建JdbcConfig类

public class JdbcConfig {
@Value("${jdbc.driver}")
private String driver;
@Value("${jdbc.url}")
private String url;
@Value("${jdbc.username}")
private String userName;
@Value("${jdbc.password}")
private String password;
@Bean
public DataSource dataSource(){
DruidDataSource ds = new DruidDataSource();
ds.setDriverClassName(driver);
ds.setUrl(url);
ds.setUsername(userName);
ds.setPassword(password);
return ds;
}
}

创建MybatisConfig整合mybatis

MybatisConfig类

public class MybatisConfig {
//定义bean，SqlSessionFactoryBean，用于产生
SqlSessionFactory对象
@Bean
public SqlSessionFactoryBean
sqlSessionFactory(DataSource dataSource){
SqlSessionFactoryBean ssfb = new SqlSessionFactoryBean();
ssfb.setTypeAliasesPackage("com.lzw.domain");
ssfb.setDataSource(dataSource);
return ssfb;
}
//定义bean，返回MapperScannerConfigurer对象
@Bean
public MapperScannerConfigurer
mapperScannerConfigurer(){
MapperScannerConfigurer msc = new MapperScannerConfigurer();
msc.setBasePackage("com.lzw.mapper");
return msc;
}
}

创建SpringConfig主配置类进行包扫描和加载其他配置类

SpringConfig类

@Configuration
@ComponentScan({"com.lzw"})
@PropertySource({"classpath:db.properties"})
@Import({JdbcConfig.class,MybatisConfig.class})
public class SpringConfig {
}

创建SQL映射配置文件、

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"https://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.lzw.mapper.EmployeeMapper">
<select id="findAll" resultType="Employee">
select emp_id empId,emp_name
empName,emp_salary empSalary from t_emp
</select>
</mapper>

测试类：

@Test
public void test01(){
ApplicationContext ctx = new
AnnotationConfigApplicationContext(SpringConfig.class);
EmployeeMapper employeeMapper = ctx.getBean(EmployeeMapper.class);
List<Employee> employeeList =
                employeeMapper.findAll();
System.out.println(employeeList);
}