Spring 参数注入
一个(类)Bean可能包含多种属性,这些属性怎么配置??? 见下:
用People Dog Cat Tiger Panda五个类来学习一些常用的=_=
重点在XML
<!--基本类型注入--> <bean id="tiger" class="party.infoo.entity.Tiger"> <property name="name" value="Tiger_AA"/> <property name="age" value="3"/> </bean> <bean id="cat" class="party.infoo.entity.Cat"> <property name="name" value="Cat_AA"/> <property name="age" value="2"/> </bean> <bean id="dog" class="party.infoo.entity.Dog"> <property name="name" value="Dod_AA"/> <property name="age" value="5"/> </bean> <bean id="panda" class="party.infoo.entity.Panda"> <property name="name" value="Panda_A"/> <property name="age" value="3"/> </bean> <!--参数注入方法介绍--> <bean id="people" class="party.infoo.entity.People"> <!--基本类型注入--> <property name="name" value="People_AA"/> <!--bean注入--> <property name="dog" ref="dog"/> <!--级联属性注入《要求已经new过的》--> <property name="cat.name" value="Cat_BB"/> <!--内部bean注入--> <property name="tiger"> <bean class="party.infoo.entity.Tiger"> <property name="name" value="Tiger_BB"/> <property name="age" value="10"/> </bean> </property> <!--null值注入--> <property name="panda"> <null></null> </property> <!--list--> <property name="books"> <list> <value>JAVA</value> <value>ENGLISH</value> </list> </property> <!--set--> <property name="hobbies"> <set> <value>唱歌</value> <value>玩游戏</value> </set> </property> <!--map--> <property name="works"> <map> <entry> <key><value>星期四</value></key> <value>上班</value> </entry> <entry> <key><value>星期五</value></key> <value>放假</value> </entry> </map> </property> <!--proeperty--> <property name="address"> <props> <prop key="addres1">AAAAAAAAAA</prop> <prop key="addres2">BBBBBBBBBB</prop> </props> </property> </bean>
package party.infoo.entity; import java.util.*; /** * Created by infoo on 2017/2/18. */ public class People { private String name; private Dog dog; private Cat cat=new Cat(); private Tiger tiger; private Panda panda; private List<String> books=new ArrayList<String>(); private Set<String> hobbies=new HashSet<String>(); private Map<String,String> works=new HashMap<String,String>(); private Properties address=new Properties(); public String getName() { return name; } public void setName(String name) { this.name = name; } public Dog getDog() { return dog; } public void setDog(Dog dog) { this.dog = dog; } public Cat getCat() { return cat; } public void setCat(Cat cat) { this.cat = cat; } public Tiger getTiger() { return tiger; } public void setTiger(Tiger tiger) { this.tiger = tiger; } public Panda getPanda() { return panda; } public void setPanda(Panda panda) { this.panda = panda; } public List<String> getBooks() { return books; } public void setBooks(List<String> books) { this.books = books; } public Set<String> getHobbies() { return hobbies; } public void setHobbies(Set<String> hobbies) { this.hobbies = hobbies; } public Map<String, String> getWorks() { return works; } public void setWorks(Map<String, String> works) { this.works = works; } public Properties getAddress() { return address; } public void setAddress(Properties address) { this.address = address; } @Override public String toString() { return "People{" + "name='" + name + '\'' + ", dog=" + dog + ", cat=" + cat + ", tiger=" + tiger + ", panda=" + panda + ", books=" + books + ", hobbies=" + hobbies + ", works=" + works + ", address=" + address + '}'; } }
package party.infoo.entity; /** * Created by infoo on 2017/2/18. */ public class Tiger { private String name; private int age; 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; } @Override public String toString() { return "Tiger{" + "name='" + name + '\'' + ", age=" + age + '}'; } }
package party.infoo.entity; /** * Created by infoo on 2017/2/18. */ public class Panda { private String name; private int age; 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; } @Override public String toString() { return "Panda{" + "name='" + name + '\'' + ", age=" + age + '}'; } }
package party.infoo.entity; /** * Created by infoo on 2017/2/18. */ public class Dog { private String name; private int age; 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; } @Override public String toString() { return "Dog{" + "name='" + name + '\'' + ", age=" + age + '}'; } }
package party.infoo.entity; /** * Created by infoo on 2017/2/18. */ public class Cat { private String name; private int age; 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; } @Override public String toString() { return "Cat{" + "name='" + name + '\'' + ", age=" + age + '}'; } }
By Ginfoo