Created
August 20, 2019 06:58
-
-
Save supernovel/2c00c96a4ef1d7b949b0e532e75f1687 to your computer and use it in GitHub Desktop.
java merge properties
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
package com.pixup.admin.common.util; | |
import java.beans.PropertyDescriptor; | |
import java.lang.reflect.Method; | |
import java.lang.reflect.Modifier; | |
import java.util.function.Predicate; | |
import javax.annotation.Nullable; | |
import org.springframework.beans.BeanUtils; | |
import org.springframework.beans.BeansException; | |
import org.springframework.beans.FatalBeanException; | |
import org.springframework.util.Assert; | |
import org.springframework.util.ClassUtils; | |
public class ObjectUtil { | |
public static void mergeProperties( | |
Object source, | |
Object target | |
) throws BeansException { | |
mergeProperties(source, target, null); | |
} | |
public static void mergeProperties( | |
Object source, | |
Object target, | |
@Nullable Predicate<Object> filter | |
) throws BeansException { | |
Assert.notNull(source, "Source must not be null"); | |
Assert.notNull(target, "Target must not be null"); | |
PropertyDescriptor[] targetPds = BeanUtils.getPropertyDescriptors(target.getClass()); | |
for (PropertyDescriptor targetPd : targetPds) { | |
Method writeMethod = targetPd.getWriteMethod(); | |
if (writeMethod != null) { | |
PropertyDescriptor sourcePd = BeanUtils.getPropertyDescriptor(source.getClass(), targetPd.getName()); | |
if (sourcePd != null) { | |
Method readMethod = sourcePd.getReadMethod(); | |
if (readMethod != null && | |
ClassUtils.isAssignable(writeMethod.getParameterTypes()[0], readMethod.getReturnType())) { | |
try { | |
if (!Modifier.isPublic(readMethod.getDeclaringClass().getModifiers())) { | |
readMethod.setAccessible(true); | |
} | |
Object value = readMethod.invoke(source); | |
if (!Modifier.isPublic(writeMethod.getDeclaringClass().getModifiers())) { | |
writeMethod.setAccessible(true); | |
} | |
if(filter == null || filter.test(value)){ | |
writeMethod.invoke(target, value); | |
} | |
} | |
catch (Throwable ex) { | |
throw new FatalBeanException( | |
"Could not copy property '" + targetPd.getName() + "' from source to target", ex); | |
} | |
} | |
} | |
} | |
} | |
} | |
} |
Author
supernovel
commented
Aug 20, 2019
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment