Spring 2.0的新标签----util实例
?

?经验技巧之Spring
?

一个测试Bean:

?

package?util;

public?class?TestBean?{
???private?Integer?co;

public?Integer?getCo()?{
????return?co;
}

public?void?setCo(Integer?co)?{
????this.co?=?co;
}
}

?一个测试属性文件config.properties

prop1=propValue1
prop2=propValue2

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"
?xmlns:util="http://www.springframework.org/schema/util"
?xsi:schemaLocation="http://www.springframework.org/schema/beans?
?????????????????????http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
?????????????????????http://www.springframework.org/schema/util
?????????????????????http://www.springframework.org/schema/util/spring-util-2.0.xsd">

<bean id="test" ref="list">
?? </property>
??? <property name="map" ref="map">
?? </property>
??? <property name="properties" ref="properties">
?? </property>
??? <property name="array" ref="array">
?? </property>
??? <property name="set" ref="set">
?? </property>
?? <property name="constantValue" ref="constantValue">
?? </property>

</bean>

<util:list id="list" list-value="mapValue2"></entry>
</util:map>

<util:set id="set" set-location="classpath:/util/config.properties">
</util:properties>

<util:list id="array">
? <value>arrayValue1</value>
? <value>arrayValue2</value>
</util:list>
<!-- 定义常量 -->
<util:constant id="constantValue" static-field="java.sql.Connection.TRANSACTION_SERIALIZABLE"/>

<!-- 为bean属性成员定义id,供其他bean引用,但自身属性不能使用，只能用在其他的bean上 -->

<util:property-path id="source" path="test.constantValue"/>
<bean id="testBean" class="util.TestBean">
? <property name="co">
??? <ref bean="source"/>
? </property>
</bean>

</beans>

测试程序：

package util;

import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;

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

?

public class Test {
??? private List list;
??? private Map map;
??? private String[] array;
??? private Set set;
??? private Properties properties;
??? private Integer constantValue;

?public Integer getConstantValue() {
??return constantValue;
?}
?public void setConstantValue(Integer constantValue) {
??this.constantValue = constantValue;
?}
?public List getList() {
??return list;
?}
?public void setList(List list) {
??this.list = list;
?}
?public Map getMap() {
??return map;
?}
?public void setMap(Map map) {
??this.map = map;
?}
?public String[] getArray() {
??return array;
?}
?public void setArray(String[] array) {
??this.array = array;
?}
?public Set getSet() {
??return set;
?}
?public void setSet(Set set) {
??this.set = set;
?}
?public Properties getProperties() {
??return properties;
?}
?public void setProperties(Properties properties) {
??this.properties = properties;
?}
?public static void main(String[] args) {
?
?????????? ApplicationContext ctx=new ClassPathXmlApplicationContext("util/applicationContext.xml");
?????????? Test t=(Test)ctx.getBean("test");
?????????? t.printArray(t.getArray());
?????????? t.printList(t.getList());
?????????? t.printMap(t.getMap());
?????????? t.printSet(t.getSet());
?????????? t.printProperties(t.getProperties());???
?????????? System.out.println(t.getConstantValue());
???????????
?????????? TestBean tb=(TestBean)ctx.getBean("testBean");
?????????? System.out.println("use util:property-path:"+tb.getCo());

?}
?public void printList(List result){
??System.out.println("list value:");
??for (Iterator iterator = result.iterator(); iterator.hasNext();) {
???String element = (String) iterator.next();
???System.out.println(element);
??}
?}
?public void printMap(Map result){
??System.out.println("map value:");
??for (Iterator iterator = result.keySet().iterator(); iterator.hasNext();) {
???String element = (String) iterator.next();
???System.out.println(element);
??}
?}
?public void printSet(Set result){
??System.out.println("set value:");
??for (Iterator iterator = result.iterator(); iterator.hasNext();) {
???String element = (String) iterator.next();
???System.out.println(element);
??}
?}
?public void printArray(String[] result){
??System.out.println("array value:");
??for (int i = 0; i < result.length; i++) {
???System.out.println(result[i]);
??}
?}
?public void printProperties(Properties result){

??System.out.println("properties value:");
??Enumeration enu2=result.propertyNames();
??while(enu2.hasMoreElements()){
????? String key = (String)enu2.nextElement();
????? System.out.println(key);
??}

?}

}

测试结果：

array value:
arrayValue1
arrayValue2
list value:
listValue1
listValue2
map value:
key1
key12
set value:
setValue1
setValue2
properties value:
prop2
prop1
8
use util:property-path:8