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Spring中使用Map、Set、List、数组、属性集合的注入方法配置文件
(1)下边的一个Java类包含了所有Map、Set、List、数组、属性集合等这些容器,主要用于演示spring的注入配置;
[java] view plain copy
- package com.lc.collection;
- import java.util.List;
- import java.util.Map;
- import java.util.Properties;
- import java.util.Set;
- public class Department {
- private String name;
- private String [] empName;//数组
- private List<Employee> empList;//list集合
- private Set<Employee> empsets;//set集合
- private Map<String,Employee> empMaps;//map集合
- private Properties pp;//Properties的使用
- public Set<Employee> getEmpsets() {
- return empsets;
- }
- public void setEmpsets(Set<Employee> empsets) {
- this.empsets = empsets;
- }
- public String[] getEmpName() {
- return empName;
- }
- public void setEmpName(String[] empName) {
- this.empName = empName;
- }
- public String getName() {
- return name;
- }
- public void setName(String name) {
- this.name = name;
- }
- public List<Employee> getEmpList() {
- return empList;
- }
- public void setEmpList(List<Employee> empList) {
- this.empList = empList;
- }
- public Map<String, Employee> getEmpMaps() {
- return empMaps;
- }
- public void setEmpMaps(Map<String, Employee> empMaps) {
- this.empMaps = empMaps;
- }
- public Properties getPp() {
- return pp;
- }
- public void setPp(Properties pp) {
- this.pp = pp;
- }
- }
(2)Spring配置文件beans.xml文件
[html] view plain copy
- <?xml version="1.0" encoding="utf-8"?>
- <beans xmlns="http://www.springframework.org/schema/beans"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xmlns:context="http://www.springframework.org/schema/context"
- xmlns:tx="http://www.springframework.org/schema/tx"
- xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
- http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
- http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
- <bean id="department" class="com.hsp.collection.Department">
- <property name="name" value=http://www.mamicode.com/"财务部"/>
- <!-- 给数组注入值 -->
- <property name="empName">
- <list>
- <value>小明</value>
- <value>小明小明</value>
- <value>小明小明小明小明</value>
- </list>
- </property>
- <!-- 给list注入值 list 中可以有相当的对象 -->
- <property name="empList">
- <list>
- <ref bean="emp2" />
- <ref bean="emp1"/>
- <ref bean="emp1"/>
- <ref bean="emp1"/>
- <ref bean="emp1"/>
- <ref bean="emp1"/>
- <ref bean="emp1"/>
- </list>
- </property>
- <!-- 给set注入值 set不能有相同的对象 -->
- <property name="empsets">
- <set>
- <ref bean="emp1" />
- <ref bean="emp2"/>
- <ref bean="emp2"/>
- <ref bean="emp2"/>
- <ref bean="emp2"/>
- </set>
- </property>
- <!-- 给map注入值 map只有key不一样,就可以装配value -->
- <property name="empMaps">
- <map>
- <entry key="11" value-ref="emp1" />
- <entry key="22" value-ref="emp2"/>
- <entry key="22" value-ref="emp1"/>
- </map>
- </property>
- <!-- 给属性集合配置 -->
- <property name="pp">
- <props>
- <prop key="pp1">abcd</prop>
- <prop key="pp2">hello</prop>
- </props>
- </property>
- </bean>
- <bean id="emp1" class="com.hsp.collection.Employee">
- <property name="name" value=http://www.mamicode.com/"北京"/>
- <property name="id" value=http://www.mamicode.com/"1"/>
- </bean>
- <bean id="emp2" class="com.hsp.collection.Employee">
- <property name="name" value=http://www.mamicode.com/"天津"/>
- <property name="id" value=http://www.mamicode.com/"2"/>
- </bean>
- </beans>
(3)如何使用
[java] view plain copy
- package com.lc.collection;
- import java.util.Enumeration;
- import java.util.Iterator;
- import java.util.Map;
- import java.util.Properties;
- import java.util.Map.Entry;
- import org.springframework.context.ApplicationContext;
- import org.springframework.context.support.ClassPathXmlApplicationContext;
- public class App1 {
- public static void main(String[] args) {
- ApplicationContext ac=new ClassPathXmlApplicationContext("com/lc/collection/beans.xml");
- Department department=(Department) ac.getBean("department");
- System.out.println(department.getName());
- for(String emName:department.getEmpName()){
- System.out.println(emName);
- }
- /*
- * 通过list集合取出数据
- */
- System.out.println("**********通过list集合取出数据*****");
- for(Employee e : department.getEmpList()){
- System.out.println("name="+e.getName()+" "+e.getId());
- }
- /*
- * 通过set集合取出数据
- */
- System.out.println("**********通过set集合取出数据*****");
- for(Employee e : department.getEmpsets()){
- System.out.println("name="+e.getName());
- }
- /*
- * 通过map集合取出数据 迭代器
- */
- System.out.println("*******通过map集合取出数据 迭代器****");
- //1.迭代器
- Map<String,Employee> empmaps=department.getEmpMaps();
- Iterator it=empmaps.keySet().iterator();
- while(it.hasNext()){
- String key=(String) it.next();
- Employee emp=empmaps.get(key);
- System.out.println("key="+key+" "+emp.getName());
- }
- System.out.println("*******通过map集合取出数据 简洁方法****");
- //2.简洁方法
- for(Entry<String,Employee> entry1:department.getEmpMaps().entrySet()){
- System.out.println(entry1.getKey()+" "+entry1.getValue().getName());
- }
- System.out.println("*****通过Propertis取出数据*****");
- Properties pp=department.getPp();
- for(Entry<Object,Object> entry:pp.entrySet()){
- System.out.println(entry.getKey().toString()+" "+entry.getValue().toString());
- }
- System.out.println("*****通过Enumeration取出*****");
- Enumeration en= pp.keys();
- while(en.hasMoreElements()){
- String key=(String) en.nextElement();
- System.out.println(key+" "+pp.getProperty(key));
- }
- }
- }
(4)以后那些不知道的粘贴拷贝即可
Spring中使用Map、Set、List、数组、属性集合的注入方法配置文件
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