一 新增
點選檢視程式碼
void add(Brand brand);
<insert id="add" useGeneratedKeys="true" keyProperty="id"><!--主鍵返回-->
insert into tb_brand (brand_name, company_name, ordered, description, status)
values (#{brandName}, #{companyName}, #{ordered}, #{description}, #{status});
</insert>
@Test
public void testAdd() throws IOException {
//接收引數
int status = 1;
String companyName = "波導手機";
String brandName = "波導";
String description = "手機中的戰鬥機";
int ordered = 100;
//封裝物件
Brand brand = new Brand();
brand.setStatus(status);
brand.setCompanyName(companyName);
brand.setBrandName(brandName);
brand.setDescription(description);
brand.setOrdered(ordered);
//1. 獲取SqlSessionFactory
String resource = "mybatis-config.xml";
InputStream inputStream = Resources.getResourceAsStream(resource);
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
//2. 獲取SqlSession物件
SqlSession sqlSession = sqlSessionFactory.openSession();
//SqlSession sqlSession = sqlSessionFactory.openSession(true);
//3. 獲取Mapper介面的代理物件
BrandMapper brandMapper = sqlSession.getMapper(BrandMapper.class);
//4. 執行方法
brandMapper.add(brand);
//提交事務
sqlSession.commit();
//5. 釋放資源
sqlSession.close();
}
@Test
public void testAdd2() throws IOException {
//接收引數
int status = 1;
String companyName = "波導手機";
String brandName = "波導";
String description = "手機中的戰鬥機";
int ordered = 100;
//封裝物件
Brand brand = new Brand();
brand.setStatus(status);
brand.setCompanyName(companyName);
brand.setBrandName(brandName);
brand.setDescription(description);
brand.setOrdered(ordered);
//1. 獲取SqlSessionFactory
String resource = "mybatis-config.xml";
InputStream inputStream = Resources.getResourceAsStream(resource);
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
//2. 獲取SqlSession物件
SqlSession sqlSession = sqlSessionFactory.openSession();
//SqlSession sqlSession = sqlSessionFactory.openSession(true);
//3. 獲取Mapper介面的代理物件
BrandMapper brandMapper = sqlSession.getMapper(BrandMapper.class);
//4. 執行方法
brandMapper.add(brand);
Integer id = brand.getId();
System.out.println(id);
//提交事務
sqlSession.commit();
//5. 釋放資源
sqlSession.close();
}
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int update(Brand brand);
<update id="update">
update tb_brand
set brand_name=#{brandName},
company_name=#{companyName},
ordered=#{ordered},
description=#{description},
status=#{status}
where id =#{id};
</update>
點選檢視程式碼
<update id="update">
update tb_brand
<set>
<if test="brandName != null and brandName != ''">
brand_name = #{brandName},
</if>
<if test="companyName != null and companyName != ''">
company_name = #{companyName},
</if>
<if test="ordered != null">
ordered = #{ordered},
</if>
<if test="description != null and description != ''">
description = #{description},
</if>
<if test="status != null">
status = #{status}
</if>
</set>
where id = #{id};
</update>
@Test
public void testUpdate() throws IOException {
//接收引數
int status = 0;
String companyName = "波導手機";
String brandName = "波導";
String description = "波導手機,手機中的戰鬥機";
int ordered = 200;
int id = 6;
//封裝物件
Brand brand = new Brand();
brand.setStatus(status);
// brand.setCompanyName(companyName);
// brand.setBrandName(brandName);
// brand.setDescription(description);
// brand.setOrdered(ordered);
brand.setId(id);
//1. 獲取SqlSessionFactory
String resource = "mybatis-config.xml";
InputStream inputStream = Resources.getResourceAsStream(resource);
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
//2. 獲取SqlSession物件
SqlSession sqlSession = sqlSessionFactory.openSession();
//SqlSession sqlSession = sqlSessionFactory.openSession(true);
//3. 獲取Mapper介面的代理物件
BrandMapper brandMapper = sqlSession.getMapper(BrandMapper.class);
//4. 執行方法
int count = brandMapper.update(brand);
System.out.println(count);
//提交事務
sqlSession.commit();
//5. 釋放資源
sqlSession.close();
}