项目管理-spring6学习源码

package com.tong.test; import com.tong.pojo.Emp; import com.tong.pojo.People; import com.tong.pojo.Teacher; import com.tong.test.Student; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.support.DefaultListableBeanFactory; import org.springframework.beans.factory.xml.XmlBeanDefinitionReader; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import org.springframework.core.io.FileSystemResource; import org.springframework.core.io.FileSystemResourceLoader; public class SpringTest { /* @Test:org.junit.Test.当前类不要叫Test 访问权限修饰符：必须是public，其他访问权限修饰符不报编译错误，报运行异常。 返回值：必须是void。其他返回值类型，都报运行异常。 方法名：随意。 方法参数：必须是无参的 */ // @Test // private int test(String s){ // System.out.println("Hello Junit4"); // return 1; // } /* @Test:org.junit.jupiter.api.Test; 访问权限修饰符：public/protected/default都可以。private后IDEA不出现运行提示了。推荐：default 返回值：应该是void。其他类型不报异常，但是没有效果。 方法名称：随意。 参数：不应该有参数。 */ // @Test // void test2(){ // System.out.println("Hello Jupiter"); // } @Test void testBeanFactory(){ // 1. 实例化DefaultListableBeanfactory。接收对象时不要用BeanFactory DefaultListableBeanFactory factory = new DefaultListableBeanFactory(); // 2. XMLBeanDefinitionReader,把上面对象作为构造方法参数传递过来。 XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(factory); // 3. FileSystemResource ,构造方法参数Spring配置文件的绝对路径。 FileSystemResource resource = new FileSystemResource("D:\\idea\\idea2022ws\\summer\\src\\main\\resources\\applicationContext.xml"); // 4. loadBeanDefinitions()方法加载FileSystemReader对象 reader.loadBeanDefinitions(resource); // 5. 获取容器中的Bean People peo = factory.getBean("peo", People.class); System.out.println(peo); } /* 测试通过构造方法实例化Bean */ @Test void instantiationConstructor(){ // ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:applicationContext.xml"); ApplicationContext ac = new ClassPathXmlApplicationContext("123jqk.xml"); People peo = ac.getBean("peo", People.class); System.out.println(ac.getResource("123jqk.xml").getClass().getName()); peo.setResourceLoader(new FileSystemResourceLoader()); System.out.println(peo); } /* 实例工厂方式 */ @Test void factory(){ ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml"); People peo2 = context.getBean("peo2", People.class); System.out.println(peo2); } /* 静态工厂方式 */ @Test void staticFactory(){ ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml"); People peo3 = context.getBean("peo3", People.class); System.out.println(peo3); } /* DI构造注入 */ @Test void constructorDI(){ ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml"); People peo4 = context.getBean("peo4", People.class); System.out.println(peo4); } /* DISetter注入 */ @Test void setterDI(){ ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml"); People peo5 = context.getBean("peo5", People.class); System.out.println(peo5); } /* DI 混合使用方式 */ @Test void di(){ ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml"); People peo6 = context.getBean("peo6", People.class); System.out.println(peo6); } /* 测试集合类型属性、数组类型数组、对象时的写法 */ @Test void type(){ ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext2.xml"); Teacher teacher = ac.getBean("teacher", Teacher.class); System.out.println(teacher); } /* 测试集合类型属性、数组类型数组 */ @Test void typeCollectionArray(){ ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext2.xml"); Student stu = ac.getBean("student", Student.class); System.out.println(stu); } /* * 自动注入 */ @Test void autowire(){ ClassPathXmlApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext3.xml"); Emp emp = ac.getBean("emp", Emp.class); System.out.println(emp); } }