JavaEE互联网轻量级框架整合开发（书籍）阅读笔记（9）：通过XML装配Bean

一、通过XML装配Bean

• 装配简易值
• 装配集合
• 命名空间装配（暂不测试）

二、测试例子

创建一个用户类：UserBean.java

 package com.xfwl.spring.assem;
 /**
  * Pojo实体类
  * @author Jason
  *
  */
 public class UserBean {
     private String uname;
     private String upwd;
     public UserBean(){}
     public UserBean(String uname,String upwd){
         this.uname=uname;
         this.upwd=upwd;
     }
     public String getUname() {
         return uname;
     }
     public void setUname(String uname) {
         this.uname = uname;
     }
     public String getUpwd() {
         return upwd;
     }
     public void setUpwd(String upwd) {
         this.upwd = upwd;
     }
     @Override
     public String toString() {
         return "UserBean [uname=" + uname + ", upwd=" + upwd + "]";
     }    

 }    

创建一个管理类：Manager.java

 package com.xfwl.spring.assem;

 import java.util.List;
 import java.util.Map;
 import java.util.Properties;
 import java.util.Set;
 /**
  *
  * @function
  * @author 小风微凉
  * @time  2018-7-10 上午11:32:01
  */
 public class Manager{
     private long id;
     private List<UserBean> userList;
     private Map<String,UserBean> userMap;
     private Properties userProps;
     private Set<UserBean> userSet;
     private String[] userArr;

     /****getter和setter*******/
     public long getId() {
         return id;
     }
     public void setId(long id) {
         this.id = id;
     }
     public List<UserBean> getUserList() {
         return userList;
     }
     public void setUserList(List<UserBean> userList) {
         this.userList = userList;
     }
     public Map<String, UserBean> getUserMap() {
         return userMap;
     }
     public void setUserMap(Map<String, UserBean> userMap) {
         this.userMap = userMap;
     }
     public Properties getUserProps() {
         return userProps;
     }
     public void setUserProps(Properties userProps) {
         this.userProps = userProps;
     }
     public Set<UserBean> getUserSet() {
         return userSet;
     }
     public void setUserSet(Set<UserBean> userSet) {
         this.userSet = userSet;
     }
     public String[] getUserArr() {
         return userArr;
     }
     public void setUserArr(String[] userArr) {
         this.userArr = userArr;
     }

 }

配置文件

 <?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-2.0.xsd">

     <!-- XML装配：装配简易值 -->
     <bean id="user_tom" class="com.xfwl.spring.assem.UserBean">
         <property name="uname" value="tom"></property>
         <property name="upwd" value="123456"></property>
     </bean>
     <!-- XML装配：装配集合 -->
     <bean id="user_xfww" class="com.xfwl.spring.assem.UserBean">
         <property name="uname" value="小风微微"></property>
         <property name="upwd" value="123456"></property>
     </bean>
     <bean id="user_xfll" class="com.xfwl.spring.assem.UserBean">
         <property name="uname" value="小风凉凉"></property>
         <property name="upwd" value="123456"></property>
     </bean>
     <bean id="manager" class="com.xfwl.spring.assem.Manager">
         <property name="id" value="100001"/>
         <property name="userList">
             <list>
                 <ref bean="user_xfww"/>
                 <ref bean="user_xfll"/>
             </list>
         </property>
         <property name="userMap">
             <map>
                 <entry key="xfww" value-ref="user_xfww"/>
                 <entry key="xfll" value-ref="user_xfll"/>
             </map>
         </property>
         <property name="userProps">
             <props>
                 <prop key="xfww">小风微微</prop>
                 <prop key="xfll">小风凉凉</prop>
             </props>
         </property>
         <property name="userSet">
             <set>
                 <ref bean="user_xfww"/>
                 <ref bean="user_xfll"/>
             </set>
         </property>
         <!-- property下不存在array -->
     </bean>    

 </beans>

测试类：TestBean.java

 package com.xfwl.spring.assem;
 import java.util.Iterator;

 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 import org.springframework.context.support.FileSystemXmlApplicationContext;

 /**
  * Spring Ioc测试
  * @function
  * @author 小风微凉
  * @time  2018-7-10 上午9:55:15
  */
 public class TestBean {
     //项目相对路径
     private static final String xmlRelPath="com/xfwl/spring/assem/applicationContext.xml";
     public static void main(String[] args) {
         ClassPathXmlApplicationContext context=new ClassPathXmlApplicationContext(xmlRelPath);
         Manager manager =(Manager) context.getBean("manager");
         System.out.println("size="+manager.getUserList().size());
         Iterator<UserBean> its=manager.getUserList().iterator();
         for(;its.hasNext();){
             UserBean u=(UserBean)its.next();
             System.out.println(u.toString());
         }
     }
 }

测试结果：

 log4j:WARN No appenders could be found for logger (org.springframework.core.env.StandardEnvironment).
 log4j:WARN Please initialize the log4j system properly.
 log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
 size=2
5 UserBean [uname=小风微微, upwd=123456]
6 UserBean [uname=小风凉凉, upwd=123456]