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]