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[英]How to copy a subset of properties from Bean A to Bean B in Java?
[英]how to copy groovy properties to java bean properties
我想將一個groovy對象的屬性復制到另一個java對象,並且我知道groovy到groovy就像這樣
def copyProperties(source, target) {
source.properties.each { key, value ->
if (target.hasProperty(key) && !(key in ['class', 'metaClass']))
target[key] = value
}
}
從Java到Java我可以使用apache BeanUtils,但是如何將Groovy對象屬性復制到Java對象屬性? ps:常規對象
class UserInfo {
Integer age
String userName
String password
}
Java對象
public class UserInfo {
private int age;
private String userName;
private String password;
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
def copyProperties(source, Object target) {
source.properties.each { key, value ->
Class<? extends Object> toClass = target.getClass();
try {
BeanInfo toBean = Introspector.getBeanInfo(toClass);
PropertyDescriptor[] toPd = toBean.getPropertyDescriptors();
for (PropertyDescriptor propertyDescriptor : toPd) {
propertyDescriptor.getDisplayName();
if (key.equals(
propertyDescriptor.getDisplayName())
&& !(key in ['class', 'metaClass'])) {
if(propertyDescriptor.getWriteMethod() != null)
propertyDescriptor.getWriteMethod().invoke(target, value);
}
}
} catch (IntrospectionException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
}
我一個人知道的〜
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