People.java model类：
package com.cy.entity; import java.util.ArrayList; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Properties; import java.util.Set; public class People { private int id; private String name; private int age; private Dog dog; private List<String> hobbies = new ArrayList<String>(); private Set<String> loves = new HashSet<String>(); private Map<String,String> works = new HashMap<String,String>(); private Properties addresses = new Properties(); public People() { super(); // TODO Auto-generated constructor stub } public People(int id, String name, int age) { super(); this.id = id; this.name = name; this.age = age; } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public Dog getDog() { return dog; } public void setDog(Dog dog) { this.dog = dog; } public List<String> getHobbies() { return hobbies; } public void setHobbies(List<String> hobbies) { this.hobbies = hobbies; } public Set<String> getLoves() { return loves; } public void setLoves(Set<String> loves) { this.loves = loves; } public Map<String, String> getWorks() { return works; } public void setWorks(Map<String, String> works) { this.works = works; } public Properties getAddresses() { return addresses; } public void setAddresses(Properties addresses) { this.addresses = addresses; } @Override public String toString() { return "People [id=" + id + ", name=" + name + ", age=" + age + ", dog=" + dog.getName() + ", hobbies=" + hobbies + ", loves=" + loves + ", works=" + works + ", addresses=" + addresses + "]"; } }
com.cy.entity.Dog: Model类：
package com.cy.entity; public class Dog { private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } }
spring管理bean配置文件：
beans.xml:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <!-- 基本类型值 --> <bean id="people1" class="com.cy.entity.People"> <property name="id" value="1"></property> <property name="name" value="张三"></property> <property name="age" value="11"></property> </bean> <bean id="dog1" class="com.cy.entity.Dog"> <property name="name" value="Jack"></property> </bean> <!-- 注入bean --> <bean id="people2" class="com.cy.entity.People"> <property name="id" value="2"></property> <property name="name" value="李四"></property> <property name="age" value="14"></property> <property name="dog" ref="dog1"></property> </bean> <!-- 内部bean --> <bean id="people3" class="com.cy.entity.People"> <property name="id" value="3"></property> <property name="name" value="王五"></property> <property name="age" value="13"></property> <property name="dog"> <bean class="com.cy.entity.Dog"> <property name="name" value="Tom"></property> </bean> </property> </bean> <!-- null值 --> <bean id="people4" class="com.cy.entity.People"> <property name="id" value="4"></property> <property name="name" value="赵六"></property> <property name="age" value="14"></property> <property name="dog"> <null></null> </property> </bean> <!-- 级联属性 直接这么写，但是people中的dog为null值，会报错，在People dog属性初始化时，直接Dog dog = new Dog() --> <!-- <bean id="people5" class="com.cy.entity.People"> <property name="id" value="5"></property> <property name="name" value="孙七"></property> <property name="age" value="14"></property> <property name="dog.name" value="jack2"></property> </bean> --> <!-- 集合属性 --> <bean id="people6" class="com.cy.entity.People"> <property name="id" value="6"></property> <property name="name" value="P6"></property> <property name="age" value="16"></property> <property name="dog" ref="dog1"></property> <property name="hobbies"> <list> <value>唱歌</value> <value>跳舞</value> </list> </property> <property name="loves"> <set> <value>唱歌2</value> <value>跳舞2</value> </set> </property> <property name="works"> <map> <entry> <key><value>上午</value></key> <value>写代码</value> </entry> <entry> <key><value>下午</value></key> <value>测试代码</value> </entry> </map> </property> <property name="addresses"> <props> <prop key="address1">aaaa</prop> <prop key="address2">bbbb</prop> </props> </property> </bean> </beans>
测试代码：
package com.cy.test; import org.junit.Before; import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.cy.entity.People; public class T { private ApplicationContext ac; @Before public void setUp() throws Exception { ac=new ClassPathXmlApplicationContext("beans.xml"); } //基本类型值 @Test public void test() { People people1 = (People) ac.getBean("people1"); System.out.println(people1); } //注入bean @Test public void test2() { People people2 = (People) ac.getBean("people2"); System.out.println(people2); } //内部bean @Test public void test3() { People people3 = (People) ac.getBean("people3"); System.out.println(people3); } //注入null值 @Test public void test4() { People people4 = (People) ac.getBean("people4"); System.out.println(people4); } //级联属性 测试代码直接在People类下面初始化dog，Dog dog = new Dog() @Test public void test5() { People people5 = (People) ac.getBean("people5"); System.out.println(people5); } //注入集合属性 @Test public void test6() { People people6 = (People) ac.getBean("people6"); System.out.println(people6); //People [id=6, name=P6, age=16, dog=Jack, hobbies=[唱歌, 跳舞], loves=[唱歌2, 跳舞2], works={上午=写代码, 下午=测试代码}, addresses={address2=bbbb, address1=aaaa}] } }