Spring学习笔记

2007-10-25 11:50:36　来源:IT168.com　作者:ducklyl 点击:

Spring提供了一个BeanFactoryPostProcessor接口的实现类：CustomEditorConfigurer。这个类可以实现java.beans.PropertyEditor接口的类，并将字符串值转换为指定类型的对象。

　　Spring提供了一个BeanFactoryPostProcessor接口的实现类：CustomEditorConfigurer。这个类可以实现java.beans.PropertyEditor接口的类，并将字符串值转换为指定类型的对象。
　　通过一个简单的例子来说明。
　　导入Spring所需的包：commons-logging.jar，spring.jar 。(日志包和Spring包)
　　包下载地址： http://www.blogjava.net/Files/ducklyl/Spring.rar

		

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				(
				1
				)创建User 类
package com.editor;

				public
				 
				class
				 User {

				private
				 String name;

				private
				 
				int
				 number;

				public
				 String getName() {

				return
				 name;
}

				public
				 
				void
				 setName(String name) {

				this
				.name 
				=
				 name;
}

				public
				 
				int
				 getNumber() {

				return
				 number;
}

				public
				 
				void
				 setNumber(
				int
				 number) {

				this
				.number 
				=
				 number;
}
}
(
				2
				)创建HelloBean 类
package com.editor;

				public
				 
				class
				 HelloBean {

				private
				 String helloWord;

				private
				 User user;

				public
				 String getHelloWord() {

				return
				 helloWord;
}

				public
				 
				void
				 setHelloWord(String helloWord) {

				this
				.helloWord 
				=
				 helloWord;
}

				public
				 User getUser() {

				return
				 user;
}

				public
				 
				void
				 setUser(User user) {

				this
				.user 
				=
				 user;
}
}
(
				3
				)创建UserEditor 类
package com.editor;
import java.beans.PropertyEditorSupport;

				public
				 
				class
				 UserEditor extends PropertyEditorSupport{

				public
				 
				void
				 setAsText(String text)
{
String[] strs
				=
				text.split(
				"
				,
				"
				);

				int
				 number
				=
				Integer.parseInt(strs[
				1
				]);
User user
				=
				new
				 User();
user.setName(strs[
				0
				]);
user.setNumber(number);
setValue(user);
}
}
(
				4
				)在类路径下创建property
				-
				config.xml

				<?
				xml version
				=
				"
				1.0
				"
				 encoding
				=
				"
				UTF-8
				"
				?>
			

				<!
				DOCTYPE beans PUBLIC 
				"
				-//SPRING//DTD BEAN//EN
				"
				 
				"
				http://www.springframework.org/dtd/spring-beans.dtd
				"
				>
			

				<
				beans
				>
			

				<
				bean id
				=
				"
				EditorConfigBean
				"
			

				class
				=
				"
				org.springframework.beans.factory.config.CustomEditorConfigurer
				"
				>
			

				<
				property name
				=
				"
				customEditors
				"
				><!--
				CustomEditorConfigurer类会加载
				"
				customEditors
				"
				属性设定的map
				-->
			

				<
				map
				>
			

				<
				entry key
				=
				"
				com.editor.User
				"
				>
			

				<
				bean id
				=
				"
				userEditor
				"
				 
				class
				=
				"
				com.editor.UserEditor
				"
				 
				/>
			

				</
				entry
				>
			

				</
				map
				>
			

				</
				property
				>
			

				</
				bean
				>
			

				<
				bean id
				=
				"
				helloBean
				"
				 
				class
				=
				"
				com.editor.HelloBean
				"
				>
			

				<
				property name
				=
				"
				helloWord
				"
				>
			

				<
				value
				>
				Hello
				!</
				value
				>
			

				</
				property
				>
			

				<
				property name
				=
				"
				user
				"
				>
			

				<
				value
				>
				ducklyl,
				123456
				</
				value
				>
			

				</
				property
				>
			

				</
				bean
				>
			

				</
				beans
				>
			
(
			5
				)创建测试类
package com.editor;
import org.springframework.context.
				*
				;
import org.springframework.context.support.
				*
				;

				public
				 
				class
				 SpirngTest {

				public
				 
				static
				 
				void
				 main(String[] args)
{

				//
				读取配置文件
			

				  ApplicationContext context
				=
				new
				 FileSystemXmlApplicationContext(
				"
				property-config.xml
				"
				);

				//
				获取id="helloBean"对象
			

				  HelloBean hello
				=
				(HelloBean)context.getBean(
				"
				helloBean
				"
				);

				//
				调用helloBean对象getHelloWord()方法
			

				  System.
				out
				.println(hello.getHelloWord());
System.
				out
				.println(
				"
				Name:
				"
				+
				hello.getUser().getName());
System.
				out
				.println(
				"
				Number:
				"
				+
				hello.getUser().getNumber());
}
}
如果以上正确设置，运行结果为：
Hello
				!
			
Name:ducklyl
Number:
			123456