2021-03 - 03

2026-05-30 10:50:42 +00:00 · 2021-03-31 16:58:24 +03:00
parent 95bcc87b08
commit 4c1a358505
27 changed files with 387 additions and 15 deletions
@@ -7,7 +7,8 @@ import ru.otus.spring.service.PersonService;
 public class Main {

    public static void main(String[] args) {
-        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("/spring-context.xml");
+        ClassPathXmlApplicationContext context =
+                new ClassPathXmlApplicationContext("/spring-context.xml");
        PersonService service = context.getBean(PersonService.class);
        Person ivan = service.getByName("Ivan");
        System.out.println("name: " + ivan.getName() + " age: " + ivan.getAge());
@@ -0,0 +1,24 @@
+target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/build/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
@@ -1,17 +1,38 @@
 package ru.otus.spring;

+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.ImportResource;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
+import ru.otus.spring.dao.PersonDao;
+import ru.otus.spring.dao.PersonDaoSimple;
 import ru.otus.spring.domain.Person;
 import ru.otus.spring.service.PersonService;
+import ru.otus.spring.service.PersonServiceImpl;

 public class Main {

    public static void main(String[] args) {
-        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("/spring-context.xml");
-        PersonService service = context.getBean(PersonService.class);
+        AnnotationConfigApplicationContext context =
+                new AnnotationConfigApplicationContext();
+
+        PersonDao dao = new PersonDaoSimple();
+
+        context.getBeanFactory().registerSingleton("personDao", dao);
+
+        PersonServiceImpl personService = new PersonServiceImpl();
+        personService.setDao(dao);
+
+        context.getBeanFactory().registerSingleton("personService", personService);
+
+        context.refresh();
+
+
+        PersonService service = (PersonService) context.getBean("personService");
        Person ivan = service.getByName("Ivan");
        System.out.println("name: " + ivan.getName() + " age: " + ivan.getAge());

+
        // Данная операция, в принципе не нужна.
        // Мы не работаем пока что с БД, а Spring Boot сделает закрытие за нас
        // Подробности - через пару занятий
@@ -2,7 +2,9 @@ package ru.otus.spring.dao;

 import ru.otus.spring.domain.Person;

+import java.util.Optional;
+
 public interface PersonDao {

-    Person findByName(String name);
+    Optional<Person> findByName(String name);
 }
@@ -2,9 +2,22 @@ package ru.otus.spring.dao;

 import ru.otus.spring.domain.Person;

+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
 public class PersonDaoSimple implements PersonDao {

-    public Person findByName(String name) {
-        return new Person(name, 18);
+    private final List<Person> persons = new ArrayList<>();
+
+    public PersonDaoSimple() {
+        persons.add(new Person("Ivan", 18));
+        persons.add(new Person("Masha", 18));
+    }
+
+    public Optional<Person> findByName(String name) {
+        return this.persons.stream()
+                .filter(p -> p.getName().equals(name))
+                .findAny();
    }
 }
@@ -5,13 +5,17 @@ import ru.otus.spring.domain.Person;

 public class PersonServiceImpl implements PersonService {

-    private final PersonDao dao;
+    private PersonDao dao;

-    public PersonServiceImpl(PersonDao dao) {
-        this.dao = dao;
+    public PersonServiceImpl() {
    }

    public Person getByName(String name) {
-        return dao.findByName(name);
+        return dao.findByName(name)
+                .orElseThrow(IllegalArgumentException::new);
+    }
+
+    public void setDao(PersonDao dao) {
+        this.dao = dao;
    }
 }
@@ -1,14 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns="http://www.springframework.org/schema/beans"
+       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
-        http://www.springframework.org/schema/beans/spring-beans.xsd">
+        http://www.springframework.org/schema/beans/spring-beans.xsd
+        http://www.springframework.org/schema/context
+        http://www.springframework.org/schema/context/spring-context.xsd">

    <bean id="personDao" class="ru.otus.spring.dao.PersonDaoSimple">
    </bean>

-    <bean id="personService" class="ru.otus.spring.service.PersonServiceImpl">
-        <constructor-arg name="dao" ref="personDao"/>
-    </bean>
-
 </beans>
@@ -0,0 +1,24 @@
+target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/build/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>ru.otus</groupId>
+    <artifactId>spring-03</artifactId>
+    <version>1.0</version>
+
+    <packaging>pom</packaging>
+
+    <modules>
+        <module>spring-03-exercise</module>
+        <module>spring-03-solution</module>
+    </modules>
+</project>
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>ru.otus</groupId>
+    <artifactId>spring-03-exercise</artifactId>
+    <version>1.0</version>
+
+    <properties>
+        <maven.compiler.target>11</maven.compiler.target>
+        <maven.compiler.source>11</maven.compiler.source>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>5.3.4</version>
+        </dependency>
+    </dependencies>
+</project>
@@ -0,0 +1,17 @@
+package ru.otus.spring;
+
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import ru.otus.spring.domain.Person;
+import ru.otus.spring.service.PersonService;
+
+public class Main {
+
+    public static void main(String[] args) {
+        AnnotationConfigApplicationContext context = null;
+
+        PersonService service = context.getBean(PersonService.class);
+
+        Person ivan = service.getByName("Ivan");
+        System.out.println("name: " + ivan.getName() + " age: " + ivan.getAge());
+    }
+}
@@ -0,0 +1,11 @@
+package ru.otus.spring.config;
+
+import ru.otus.spring.dao.PersonDao;
+import ru.otus.spring.dao.PersonDaoSimple;
+
+public class DaoConfig {
+
+    public PersonDao personDao() {
+        return new PersonDaoSimple();
+    }
+}
@@ -0,0 +1,12 @@
+package ru.otus.spring.config;
+
+import ru.otus.spring.dao.PersonDao;
+import ru.otus.spring.service.PersonService;
+import ru.otus.spring.service.PersonServiceImpl;
+
+public class ServicesConfig {
+
+    public PersonService personService(PersonDao dao) {
+        return new PersonServiceImpl(dao);
+    }
+}
@@ -0,0 +1,8 @@
+package ru.otus.spring.dao;
+
+import ru.otus.spring.domain.Person;
+
+public interface PersonDao {
+
+    Person findByName(String name);
+}
@@ -0,0 +1,10 @@
+package ru.otus.spring.dao;
+
+import ru.otus.spring.domain.Person;
+
+public class PersonDaoSimple implements PersonDao {
+
+    public Person findByName(String name) {
+        return new Person(name, 18);
+    }
+}
@@ -0,0 +1,20 @@
+package ru.otus.spring.domain;
+
+public class Person {
+
+    private final String name;
+    private final int age;
+
+    public Person(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getAge() {
+        return age;
+    }
+}
@@ -0,0 +1,8 @@
+package ru.otus.spring.service;
+
+import ru.otus.spring.domain.Person;
+
+public interface PersonService {
+
+    Person getByName(String name);
+}
@@ -0,0 +1,17 @@
+package ru.otus.spring.service;
+
+import ru.otus.spring.dao.PersonDao;
+import ru.otus.spring.domain.Person;
+
+public class PersonServiceImpl implements PersonService {
+
+    private final PersonDao dao;
+
+    public PersonServiceImpl(PersonDao dao) {
+        this.dao = dao;
+    }
+
+    public Person getByName(String name) {
+        return dao.findByName(name);
+    }
+}
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>ru.otus</groupId>
+    <artifactId>spring-03-solution</artifactId>
+    <version>1.0</version>
+
+    <properties>
+        <maven.compiler.target>11</maven.compiler.target>
+        <maven.compiler.source>11</maven.compiler.source>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>5.3.4</version>
+        </dependency>
+    </dependencies>
+</project>
@@ -0,0 +1,22 @@
+package ru.otus.spring;
+
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import ru.otus.spring.domain.Person;
+import ru.otus.spring.service.PersonService;
+
+@Configuration
+@ComponentScan
+public class Main {
+
+    public static void main(String[] args) {
+        AnnotationConfigApplicationContext context =
+                new AnnotationConfigApplicationContext(Main.class);
+
+        PersonService service = context.getBean(PersonService.class);
+
+        Person ivan = service.getByName("Ivan");
+        System.out.println("name: " + ivan.getName() + " age: " + ivan.getAge());
+    }
+}
@@ -0,0 +1,15 @@
+package ru.otus.spring.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import ru.otus.spring.dao.PersonDao;
+import ru.otus.spring.dao.PersonDaoSimple;
+
+@Configuration
+public class DaoConfig {
+
+    @Bean
+    public PersonDao personDao() {
+        return new PersonDaoSimple();
+    }
+}
@@ -0,0 +1,16 @@
+package ru.otus.spring.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import ru.otus.spring.dao.PersonDao;
+import ru.otus.spring.service.PersonService;
+import ru.otus.spring.service.PersonServiceImpl;
+
+@Configuration
+public class ServicesConfig {
+
+    @Bean
+    public PersonService personService(PersonDao dao) {
+        return new PersonServiceImpl(dao);
+    }
+}
@@ -0,0 +1,8 @@
+package ru.otus.spring.dao;
+
+import ru.otus.spring.domain.Person;
+
+public interface PersonDao {
+
+    Person findByName(String name);
+}
@@ -0,0 +1,10 @@
+package ru.otus.spring.dao;
+
+import ru.otus.spring.domain.Person;
+
+public class PersonDaoSimple implements PersonDao {
+
+    public Person findByName(String name) {
+        return new Person(name, 18);
+    }
+}
@@ -0,0 +1,20 @@
+package ru.otus.spring.domain;
+
+public class Person {
+
+    private final String name;
+    private final int age;
+
+    public Person(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getAge() {
+        return age;
+    }
+}
@@ -0,0 +1,8 @@
+package ru.otus.spring.service;
+
+import ru.otus.spring.domain.Person;
+
+public interface PersonService {
+
+    Person getByName(String name);
+}
@@ -0,0 +1,17 @@
+package ru.otus.spring.service;
+
+import ru.otus.spring.dao.PersonDao;
+import ru.otus.spring.domain.Person;
+
+public class PersonServiceImpl implements PersonService {
+
+    private final PersonDao dao;
+
+    public PersonServiceImpl(PersonDao dao) {
+        this.dao = dao;
+    }
+
+    public Person getByName(String name) {
+        return dao.findByName(name);
+    }
+}