xml进行注入
在Spring IoC 容器中基于xml完成对Bean的装配，创建测试类，获取ProductController的实例，调用其save()方法，在控制台上打印Product的信息
spring-config.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
<bean id="productController" class="com.yt.Controller.ProductController">
</bean>
</beans>ProductTest
@Test
public void test2(){
Product product = new Product(12, "111", "111", 123);
//这里是要根据target的相对路径来获取的相应的xml文件的的位置的
ClassPathXmlApplicationContext classPathXmlApplicationContext = new ClassPathXmlApplicationContext("spring-config.xml");
ProductController productController = (ProductController) classPathXmlApplicationContext.getBean("productController");
productController.save(product);
}注解注入
在Spring IoC 容器中基于注解（@Autowired）完成对Bean的装配，创建测试类，获取ProductController的实例，调用其save()方法，在控制台上打印Product的信息
AppConfig
package com.yt.config;
import org.springframework.context.annotation.ComponentScan;
/**
* @program: mybatis-operate
* @description
* @author: YangTao
* @create: 2024-04-22 08:43
**/
@ComponentScan("com.yt")
public class AppConfig {
}Product
package com.yt;
/**
* @program: mybatis-operate
* @description
* @author: YangTao
* @create: 2024-04-22 08:25
**/
public class Product {
private Integer id;
private String name;
private String subTitle;
private float price;
public Product(Integer id, String name, String subTitle, float price) {
this.id = id;
this.name = name;
this.subTitle = subTitle;
this.price = price;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSubTitle() {
return subTitle;
}
public void setSubTitle(String subTitle) {
this.subTitle = subTitle;
}
public float getPrice() {
return price;
}
public void setPrice(float price) {
this.price = price;
}
@Override
public String toString() {
return "Product{" +
"id=" + id +
", name='" + name + '\'' +
", subTitle='" + subTitle + '\'' +
", price=" + price +
'}';
}
}
Controller
package com.yt.Controller;
import com.yt.Product;
import com.yt.Service.ProductService;
import org.springframework.stereotype.Controller;
/**
* @program: mybatis-operate
* @description
* @author: YangTao
* @create: 2024-04-22 08:27
**/
@Controller
public class ProductController {
private ProductService productService;
public void save(Product product){
System.out.println("hello");
// productService.save(product);// 调用业务层接口的保存方法
}
}Service
package com.yt.Service;
import com.yt.Product;
import org.springframework.stereotype.Service;
/**
* @program: mybatis-operate
* @description
* @author: YangTao
* @create: 2024-04-22 08:28
**/
public interface ProductService {
public void save(Product product); // 保存商品操作
}
package com.yt.Service.ServiceImpl;
import com.yt.Product;
import com.yt.Service.ProductService;
import org.springframework.stereotype.Service;
/**
* @program: mybatis-operate
* @description
* @author: YangTao
* @create: 2024-04-22 08:28
**/
@Service
public class ProductServiceImpl implements ProductService {
@Override
public void save(Product product) {
System.out.println(product); // 实现接口中定义的方法
}
}ProductTest
public class ProductTest {
@Test
public void test1(){
Product product = new Product(12, "111", "111", 123);
AnnotationConfigApplicationContext annotationConfigApplicationContext = new AnnotationConfigApplicationContext(AppConfig.class);
ProductController productController = (ProductController) annotationConfigApplicationContext.getBean(ProductController.class);
productController.save(product);
ProductService productService = (ProductService) annotationConfigApplicationContext.getBean(ProductService.class);
productService.save(product);
}
}