https://www.pexels.com/zh-cn/photo/768089/
http://www.implements.fun:8080/tag/minispring
package com.minis.beans.factory;
import com.minis.beans.BeansException;
public interface BeanFactory {
Object getBean(String name) throws BeansException;
boolean containsBean(String name);
boolean isSingleton(String name);
boolean isPrototype(String name);
Class<?> getType(String name);
}
package com.minis.beans;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class BeanWrapperImpl extends AbstractPropertyAccessor {
Object wrappedObject;
Class<?> clz;
public BeanWrapperImpl(Object object) {
super();
this.wrappedObject = object;
this.clz = object.getClass();
}
@Override
public void setPropertyValue(PropertyValue pv) {
BeanPropertyHandler propertyHandler = new BeanPropertyHandler(pv.getName());
PropertyEditor pe = this.getCustomEditor(propertyHandler.getPropertyClz());
if (pe == null) {
pe = this.getDefaultEditor(propertyHandler.getPropertyClz());
}
if (pe != null) {
pe.setAsText((String) pv.getValue());
propertyHandler.setValue(pe.getValue());
}
else {
propertyHandler.setValue(pv.getValue());
}
}
class BeanPropertyHandler {
Method writeMethod = null;
Method readMethod = null;
Class<?> propertyClz = null;
public Class<?> getPropertyClz() {
return propertyClz;
}
public BeanPropertyHandler(String propertyName) {
try {
Field field = clz.getDeclaredField(propertyName);
propertyClz = field.getType();
this.writeMethod = clz.getDeclaredMethod("set"+propertyName.substring(0,1).toUpperCase()+propertyName.substring(1),propertyClz);
this.readMethod = clz.getDeclaredMethod("get"+propertyName.substring(0,1).toUpperCase()+propertyName.substring(1));
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (SecurityException e) {
e.printStackTrace();
} catch (NoSuchFieldException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public Object getValue() {
Object result = null;
writeMethod.setAccessible(true);
try {
result = readMethod.invoke(wrappedObject);
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
return result;
}
public void setValue(Object value) {
writeMethod.setAccessible(true);
try {
writeMethod.invoke(wrappedObject, value);
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
}
}