spring中继承PropertyEditorSupport的写法和用法

User.java

public class User {
private String name;
private int age;

public String getName() {
  return name;
}

public void setName(String name) {
  this.name = name;
}

public int getAge() {
  return age;
}

public void setAge(int age) {
  this.age = age;
}

}

用到User的类：UserContainer.java

public class UserContainer {
private User user;

public void setUser(User user) {
  this.user = user;
}

public void printUser() {
  System.out.println(user.getName() + " " + user.getAge());
}

}

将配置中的转换的类：TransformUser.java

import java.beans.PropertyEditorSupport;

public class TransformUser extends PropertyEditorSupport {

public void setAsText(String text) {
  String[] data = text.split(",");
  User user = new User();
  user.setName(data[0]);
  user.setAge(Integer.parseInt(data[1]));
  this.setValue(user);
}
}

测试类：SpringTest.java

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

public class SpringTest {

public static void main(String[] args) {
  ApplicationContext beanFactory = new ClassPathXmlApplicationContext(
    "applicationContext.xml");
  UserContainer ut = (UserContainer) beanFactory.getBean("userContainer");
  ut.printUser();

}

}

需要这样配置：在applicationContext.xml文件中。

<bean id="user" class="User" />

<bean id="userContainer" class="UserContainer">
 <property name="user" value="liming,23"></property>
</bean>
<bean id="transformUser" class="TransformUser"></bean>

<bean id="configBean"
  class="org.springframework.beans.factory.config.CustomEditorConfigurer">
  <property name="customEditors">
   <map>
    <entry key="User" value-ref="transformUser"></entry>
   </map>
  </property>
</bean>

将liming,23这种格式的转换成User类。

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