spring中自定义属性编辑器注入org.springframework.beans.factory.config.CustomEditorConfigurer时报错问题

灰太狼 2021-12-05 17:51 266阅读 0赞

报错信息如下：

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'PropertyEditorConfigurer1' defined in class path resource [spring/application-ren.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type 'java.util.LinkedHashMap' to required type 'java.util.Map' for property 'customEditors'; nested exception is java.lang.IllegalArgumentException: Cannot convert value of type 'renchaofeng_propertyEditor.TestPropertyEditor' to required type 'java.lang.Class' for property 'customEditors[renchaofeng_propertyEditor.Education]': PropertyEditor [org.springframework.beans.propertyeditors.ClassEditor] returned inappropriate value of type 'renchaofeng_propertyEditor.TestPropertyEditor'
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:564)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312)
    	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:168)
    	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:687)
    	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:525)
    	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
    	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
    	at renchaofeng.TestSpring.main(TestSpring.java:11)
    Caused by: org.springframework.beans.TypeMismatchException: Failed to convert property value of type 'java.util.LinkedHashMap' to required type 'java.util.Map' for property 'customEditors'; nested exception is java.lang.IllegalArgumentException: Cannot convert value of type 'renchaofeng_propertyEditor.TestPropertyEditor' to required type 'java.lang.Class' for property 'customEditors[renchaofeng_propertyEditor.Education]': PropertyEditor [org.springframework.beans.propertyeditors.ClassEditor] returned inappropriate value of type 'renchaofeng_propertyEditor.TestPropertyEditor'
    	at org.springframework.beans.AbstractNestablePropertyAccessor.convertIfNecessary(AbstractNestablePropertyAccessor.java:608)
    	at org.springframework.beans.AbstractNestablePropertyAccessor.convertForProperty(AbstractNestablePropertyAccessor.java:615)
    	at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:216)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1583)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1542)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1284)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
    	... 11 more
    Caused by: java.lang.IllegalArgumentException: Cannot convert value of type 'renchaofeng_propertyEditor.TestPropertyEditor' to required type 'java.lang.Class' for property 'customEditors[renchaofeng_propertyEditor.Education]': PropertyEditor [org.springframework.beans.propertyeditors.ClassEditor] returned inappropriate value of type 'renchaofeng_propertyEditor.TestPropertyEditor'
    	at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:303)
    	at org.springframework.beans.TypeConverterDelegate.convertToTypedMap(TypeConverterDelegate.java:661)
    	at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:227)
    	at org.springframework.beans.AbstractNestablePropertyAccessor.convertIfNecessary(AbstractNestablePropertyAccessor.java:588)
    	... 17 more

有时我们需要定义属性编辑器，便于将string类型转成我们需要的类型，代码如下：

package renchaofeng_propertyEditor;
    
    public class Person {
    	private int id;
    	private String name;
    	private Education education;
    	public int getId() {
    		return id;
    	}
    	public void setId(int id) {
    		this.id = id;
    	}
    	public String getName() {
    		return name;
    	}
    	public void setName(String name) {
    		this.name = name;
    	}
    	public Education getEducation() {
    		return education;
    	}
    	public void setEducation(Education education) {
    		this.education = education;
    	}
    	@Override
    	public String toString() {
    		return "Person [id=" + id + ", name=" + name + ", education=" + education + "]";
    	}
    }

package renchaofeng_propertyEditor;
    
    public class Education {
    	private String country;
    
        private String directory;
    
    	public String getCountry() {
    		return country;
    	}
    
    	public void setCountry(String country) {
    		this.country = country;
    	}
    
    	public String getDirectory() {
    		return directory;
    	}
    
    	public void setDirectory(String directory) {
    		this.directory = directory;
    	}
    }

package renchaofeng_propertyEditor;
    
    import java.beans.PropertyEditorSupport;
    
    import org.apache.commons.lang3.StringUtils;
    
    public class TestPropertyEditor extends PropertyEditorSupport{
    	 
    	@Override
    	public void setAsText(String text) throws IllegalArgumentException {
    		 if(text == null || StringUtils.isBlank(text)) {
    			 throw new IllegalArgumentException("参数text不能为空");
    		 }else {
    			 String[] StrAddressArr = StringUtils.split(text, ",");
    	            Education add = new Education();
    	            add.setCountry(StrAddressArr[0]);
    	            add.setDirectory(StrAddressArr[1]);
    	            setValue(add);
    		 }
    	}
    }

然后在spring的配置文件里注入Person类和属性编辑器TestPropertyEditor，如下：

原因在于CustomEditorConfigurer类的属性customEditors进行更改，老版本的是定义是private Map customEditors;　而新版本定义如下：　private Map<Class<?>, Class<? extends PropertyEditor>> customEditors;　所以要更改一下org.springframework.beans.factory.config.CustomEditorConfigurer的配置方式。