Spring PropertyEditor 使用案例

1. 继承 PropertyEditorSupport 重写 setAsText 方法

import java.beans.PropertyEditorSupport;

public class StringToArrayEditor extends PropertyEditorSupport {


    @Override
    public void setAsText(String text) throws IllegalArgumentException {

        //接收Text的值并处理
        String[] split = text.split(",");

        //处理后临时存储值
        setValue(split);
    }
}

2.实现 org.springframework.beans.PropertyEditorRegistrar接口，重写 registerCustomEditors 方法

import org.springframework.beans.BeansException;
import org.springframework.beans.PropertyEditorRegistrar;
import org.springframework.beans.PropertyEditorRegistry;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;


public class MyConversionRegistor implements PropertyEditorRegistrar, BeanFactoryPostProcessor {
    @Override
    public void registerCustomEditors(PropertyEditorRegistry registry) {
        registry.registerCustomEditor(String[].class,new StringToArrayEditor());
    }

    @Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
        beanFactory.addPropertyEditorRegistrar(this);
    }
}

3.刷新容器，获取bean

package com.sz;

import com.sz.pojo.MyNumber;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class App {

    public static void main(String[] args) {

        ConfigurableApplicationContext app = new ClassPathXmlApplicationContext("META-INF/Instanation.xml");

        MyNumber bean = app.getBean(MyNumber.class);

        System.out.println("bean = " + bean);
        //输出结果
       // Number{member=[1, 2, 3, 4, 5, 6, 7, 8, 9]}
        
    }

}

xml

    

    
        
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