使用XML装配Bean需要定义对于的XML，需要引入对应的XML模式（XSD）文件，这些文件会定义配置Spring Bean的一些元素，简单的配置如下：
<?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"> </beans>
创建角色类Role
类构造器有参与无参
代码：
Role:
package com.wbg.springxmlbean.entity;
public class Role {
private int id;
private String roleName;
private String note;
@Override
public String toString() {
return "Role{" +
"id=" + id +
", roleName='" + roleName + '\'' +
", note='" + note + '\'' +
'}';
}
public Role() {
}
public Role(int id, String roleName, String note) {
this.id = id;
this.roleName = roleName;
this.note = note;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getRoleName() {
return roleName;
}
public void setRoleName(String roleName) {
this.roleName = roleName;
}
public String getNote() {
return note;
}
public void setNote(String note) {
this.note = note;
}
}
User：
package com.wbg.springxmlbean.entity;
public class User {
private int id;
private Role role;
@Override
public String toString() {
return "User{" +
"id=" + id +
", role=" + role +
", name='" + name + '\'' +
", age=" + age +
'}';
}
public Role getRole() {
return role;
}
public void setRole(Role role) {
this.role = role;
}
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;
}
private String name;
private int age;
}
xml进行配置：
1、装备简易值
<!--
id：属性是Spring找到的这个Bean的编号，不是必须的，如果没有Spring会采用：
"全限定名#{number}"的格式生成编号
列如： <bean class="com.wbg.springxmlbean.entity.Role">
Spring会生成编号为："com.wbg.springxmlbean.entity.Role#1"
class：是一个类的全限定名
-->
<bean id="role1" class="com.wbg.springxmlbean.entity.Role">
<!-- property元素是定义类的属性，name属性定义的是属性名称 value是值
相当于：
Role role=new Role();
role.setId(1);
role.setRoleName("高级工程师");
role.setNote("重要人员");-->
<property name="id" value="1"/>
<property name="roleName" value="高级工程师"/>
<property name="note" value="重要人员"/>
</bean>
<bean id="rolew" class="com.wbg.springxmlbean.entity.Role">
<!-- constructor-arg元素,index代表参数索引, value是值
相当于：
Role role=new Role(1,"高级工程师","重要人员");-->
<constructor-arg index="0" value="1"/>
<constructor-arg index="1" value="高级工程师"/>
<constructor-arg index="2" value="重要人员"/>
</bean>
<bean id="user" class="com.wbg.springxmlbean.entity.User">
<property name="id" value="1"/>
<property name="age" value="18"/>
<property name="name" value="韦邦杠"/>
<!--name是属性名称 ref是对应的Bean-->
<property name="role" ref="role1"/>
</bean>
测试：
public static void main(String[] args) {
ApplicationContext applicationContext=new ClassPathXmlApplicationContext("Role.xml");
UserService userService= (UserService) applicationContext.getBean("userService");
userService.setUser((User)applicationContext.getBean("user"));
System.out.println(userService.getUser());
}
2、装配集合
定义类：
package com.wbg.springxmlbean.entity;
import java.util.*;
public class ComplexAssembly {
private Long id;
private List<String> list;
private Map<String,String> map;
private Properties properties;
private Set<String> set;
private String[] array;
@Override
public String toString() {
return "ComplexAssembly{" +
"id=" + id +
", list=" + list +
", map=" + map +
", properties=" + properties +
", set=" + set +
", array=" + Arrays.toString(array) +
'}';
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public List<String> getList() {
return list;
}
public void setList(List<String> list) {
this.list = list;
}
public Map<String, String> getMap() {
return map;
}
public void setMap(Map<String, String> map) {
this.map = map;
}
public Properties getProperties() {
return properties;
}
public void setProperties(Properties properties) {
this.properties = properties;
}
public Set<String> getSet() {
return set;
}
public void setSet(Set<String> set) {
this.set = set;
}
public String[] getArray() {
return array;
}
public void setArray(String[] array) {
this.array = array;
}
}
xml:
<bean id="complexAssembly" class="com.wbg.springxmlbean.entity.ComplexAssembly">
<property name="id" value="1"/>
<property name="list">
<!--List属性对应list元素进行装配,然后通过多个value设值-->
<list>
<value>value-list-1</value>
<value>value-list-2</value>
<value>value-list-3</value>
<value>value-list-4</value>
</list>
</property>
<property name="map">
<!--Map属性对应map元素进行装配,然后通过多个entry设值,只是entry包含有key和value值设值-->
<map>
<entry key="key1" value="value1"/>
<entry key="key2" value="value2"/>
<entry key="key3" value="value3"/>
<entry key="key4" value="value4"/>
</map>
</property>
<property name="properties">
<!--Properties属性，对应props进行装配，然后通过prop元素数值，只是prop有一个必填的key,然后设值-->
<props>
<prop key="prop1">value-prop-1</prop>
<prop key="prop2">value-prop-2</prop>
<prop key="prop3">value-prop-3</prop>
<prop key="prop4">value-prop-4</prop>
</props>
</property>
<property name="set">
<!--Set属性对应set元素进行装配,然后通过多个value设值-->
<set>
<value>value-set-1</value>
<value>value-set-2</value>
<value>value-set-3</value>
<value>value-set-4</value>
</set>
</property>
<property name="array">
<!--Array属性对应array元素进行装配,然后通过多个value设值-->
<array>
<value>value-array-1</value>
<value>value-array-2</value>
<value>value-array-3</value>
<value>value-array-4</value>
</array>
</property>
</bean>
测试：
ApplicationContext applicationContext=new ClassPathXmlApplicationContext("Role.xml");
ComplexAssembly complexAssembly= (ComplexAssembly) applicationContext.getBean("complexAssembly");
System.out.println(complexAssembly);
3、装配用户和角色
类：MapUserRole
package com.wbg.springxmlbean.entity;
import java.util.Map;
public class MapUserRole {
private Map<User,Role> map;
@Override
public String toString() {
return "MapUserRole{" +
"map=" + map +
'}';
}
public Map<User, Role> getMap() {
return map;
}
public void setMap(Map<User, Role> map) {
this.map = map;
}
}
xml:
<bean id="u2" class="com.wbg.springxmlbean.entity.User">
<property name="id" value="1"/>
<property name="name" value="小邦哥"/>
<property name="age" value="20"/>
</bean>
<bean id="u1" class="com.wbg.springxmlbean.entity.User">
<property name="id" value="2"/>
<property name="name" value="邦杠"/>
<property name="age" value="21"/>
</bean>
<bean id="r1" class="com.wbg.springxmlbean.entity.Role">
<constructor-arg index="0" value="1"/>
<constructor-arg index="1" value="中级工程师"/>
<constructor-arg index="2" value="普通人员"/>
</bean>
<bean id="r2" class="com.wbg.springxmlbean.entity.Role">
<constructor-arg index="0" value="2"/>
<constructor-arg index="1" value="高级工程师"/>
<constructor-arg index="2" value="重要人员"/>
</bean>
<bean id="mapUserRole" class="com.wbg.springxmlbean.entity.MapUserRole">
<property name="map">
<map>
<entry key-ref="u1" value-ref="r1"/>
<entry key-ref="u2" value-ref="r2"/>
</map>
</property>
</bean>
测试：
