examples
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DianeDuan
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6cca052251
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package com.baeldung.applicationcontext;
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public class Course {
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private String name;
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public Course() {
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}
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public Course(String name) {
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this.name = name;
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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}
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package com.baeldung.applicationcontext;
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import java.util.Locale;
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public class Dialog {
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private Locale locale;
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private String hello;
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private String thanks;
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public Dialog() {
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}
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public Dialog(Locale locale, String hello, String thanks) {
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this.locale = locale;
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this.hello = hello;
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this.thanks = thanks;
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}
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public Locale getLocale() {
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return locale;
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}
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public void setLocale(Locale locale) {
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this.locale = locale;
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}
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public String getHello() {
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return hello;
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}
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public void setHello(String hello) {
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this.hello = hello;
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}
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public String getThanks() {
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return thanks;
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}
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public void setThanks(String thanks) {
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this.thanks = thanks;
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}
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}
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package com.baeldung.applicationcontext;
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public class Student {
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private int no;
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private String name;
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public Student() {
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}
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public Student(int no, String name) {
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this.no = no;
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this.name = name;
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}
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public int getNo() {
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return no;
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}
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public void setNo(int no) {
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this.no = no;
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public void destroy() {
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System.out.println("Student(no: " + no + ") is destroyed");
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}
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}
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package com.baeldung.applicationcontext;
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import java.util.ArrayList;
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import java.util.List;
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import javax.annotation.PostConstruct;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.context.ApplicationContext;
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public class Teacher {
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@Autowired
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private ApplicationContext context;
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private List<Course> courses = new ArrayList<>();
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public Teacher() {
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}
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@PostConstruct
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public void addCourse() {
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if (context.containsBean("math")) {
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Course math = context.getBean("math", Course.class);
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courses.add(math);
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}
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if (context.containsBean("physics")) {
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Course physics = context.getBean("physics", Course.class);
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courses.add(physics);
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}
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}
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public List<Course> getCourses() {
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return courses;
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}
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public void setCourses(List<Course> courses) {
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this.courses = courses;
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}
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}
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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:context="http://www.springframework.org/schema/context"
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xmlns="http://www.springframework.org/schema/beans"
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xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
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<context:annotation-config/>
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<bean id="student" class="com.baeldung.applicationcontext.Student" destroy-method="destroy">
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<property name="no" value="15"/>
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<property name="name" value="Tom"/>
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</bean>
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<bean id="math" class="com.baeldung.applicationcontext.Course">
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<property name="name" value="math"/>
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</bean>
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<bean name="teacher" class="com.baeldung.applicationcontext.Teacher"/>
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</beans>
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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns="http://www.springframework.org/schema/beans"
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xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
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<bean id="messageSource"
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class="org.springframework.context.support.ResourceBundleMessageSource">
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<property name="basenames">
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<list>
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<value>dialog/dialog</value>
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</list>
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</property>
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</bean>
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</beans>
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hello=hello
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you=you
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thanks=thank {0}
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hello=\u4f60\u597d
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you=\u4f60
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thanks=\u8c22\u8c22{0}
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package com.baeldung.applicationcontext;
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import static org.hamcrest.core.IsEqual.equalTo;
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import static org.junit.Assert.assertThat;
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import java.util.List;
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import java.util.Locale;
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import org.junit.Test;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.ConfigurableApplicationContext;
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import org.springframework.context.MessageSource;
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import org.springframework.context.support.ClassPathXmlApplicationContext;
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public class ClasspathXmlApplicationContextTest {
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@Test
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public void testBasicUsage() {
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ApplicationContext context = new ClassPathXmlApplicationContext("classpathxmlapplicationcontext-example.xml");
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Student student = (Student) context.getBean("student");
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assertThat(student.getNo(), equalTo(15));
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assertThat(student.getName(), equalTo("Tom"));
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Student sameStudent = context.getBean("student", Student.class);// do not need cast class
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assertThat(sameStudent.getNo(), equalTo(15));
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assertThat(sameStudent.getName(), equalTo("Tom"));
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}
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@Test
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public void testRegisterShutdownHook() {
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ConfigurableApplicationContext context = new ClassPathXmlApplicationContext("classpathxmlapplicationcontext-example.xml");
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context.registerShutdownHook();
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}
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@Test
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public void testInternationalization() {
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MessageSource resources = new ClassPathXmlApplicationContext("classpathxmlapplicationcontext-internationalization.xml");
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String enHello = resources.getMessage("hello", null, "Default", Locale.ENGLISH);
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String enYou = resources.getMessage("you", null, Locale.ENGLISH);
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String enThanks = resources.getMessage("thanks", new Object[] { enYou }, Locale.ENGLISH);
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assertThat(enHello, equalTo("hello"));
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assertThat(enThanks, equalTo("thank you"));
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String chHello = resources.getMessage("hello", null, "Default", Locale.SIMPLIFIED_CHINESE);
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String chYou = resources.getMessage("you", null, Locale.SIMPLIFIED_CHINESE);
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String chThanks = resources.getMessage("thanks", new Object[] { chYou }, Locale.SIMPLIFIED_CHINESE);
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assertThat(chHello, equalTo("你好"));
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assertThat(chThanks, equalTo("谢谢你"));
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}
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@Test
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public void testApplicationContextAware() {
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ApplicationContext context = new ClassPathXmlApplicationContext("classpathxmlapplicationcontext-example.xml");
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Teacher teacher = context.getBean("teacher", Teacher.class);
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List<Course> courses = teacher.getCourses();
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assertThat(courses.size(), equalTo(1));
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assertThat(courses.get(0).getName(), equalTo("math"));
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}
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}
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