Java object any deep clone clone tool class share

Original: Java object any deep clone clone tool class share

Source code: Http://www.zuidaima.com/share/1550463408114688.htm

Java object any deep clone clone tool class share

Package com.zuidaima.n_app.util;  Import Java.lang.reflect.Constructor;  Import Java.lang.reflect.Field;  Import java.lang.reflect.InvocationTargetException;  Import Java.lang.reflect.Modifier;  Import Java.util.Arrays;  Import java.util.Collection;  Import Java.util.HashSet;  Import Java.util.Map;    Import Java.util.Set;      /** * Clone Tool class * @author [email protected] www.zuidaima.com * * * * public class Clone {/** * Special type array not required to be copied */static class[] needlesscloneclasses = new Class[]{string.class,boolean.class,character.class,byte.class,short      . class, Integer.class,long.class,float.class,double.class,void.class,object.class,class.class}; /** * Determines if the type object does not need to be copied * @param c specifies type * @return returns True if no replication is required, otherwise false */private static Boolean Isneedl          Essclone (Class c) {if (c.isprimitive ()) {//basic type return true;       } for (Class tmp:needlesscloneclasses) {//is not required to copy an array of type if (C.equals (TMP)) {           return true;      }} return false;      }/** * Try to create a new object * @param C Original Object * @return New Object * @throws illegalaccessexception */ Private Static Object CreateObject (object value) throws illegalaccessexception{try {Retu              RN Value.getclass (). newinstance ();              } catch (Instantiationexception e) {return null;              } catch (Illegalaccessexception e) {throw e; }}/** * Copy Object Data * @param value Original Object * @param level copy depth.      Less than 0 is an infinite depth, which is about to drill down to the most basic type and object class level of data replication; * Greater than 0 copies the data to the specified depth by its value, or 0 returns the object itself without any copying behavior. * @return Return the copied object * @throws illegalaccessexception * @throws instantiationexception * @throws Invocationta Rgetexception * @throws nosuchmethodexception */public static object Clone (object Value,int level) throws Illegalaccessexception, Instantiationexception, INVOcationtargetexception, nosuchmethodexception{if (value==null) {return null;          } if (level==0) {return value;          } Class C = Value.getclass ();          if (Isneedlessclone (c)) {return value;          } level--;              if (value instanceof Collection) {//Copy new collection Collection TMP = (Collection) c.newinstance ();          for (Object V: (Collection) value) {Tmp.add (Clone (V,level));//Deep copy} value = tmp;                  } else if (C.isarray ()) {//Copy new array//first determine if the base data type is (C.equals (Int[].class)) {                  Int[] Old = (int[]) value;              Value = (int[]) arrays.copyof (old, old.length);                  } else if (C.equals (Short[].class)) {short[] old = (short[]) value;              Value = (short[]) arrays.copyof (old, old.length); } else if (C.equals (CHAR[].CLASS) {char[] old = (char[]) value;              Value = (char[]) arrays.copyof (old, old.length);                  } else if (C.equals (Float[].class)) {float[] old = (float[]) value;              Value = (float[]) arrays.copyof (old, old.length);                  } else if (C.equals (Double[].class)) {double[] old = (double[]) value;              Value = (double[]) arrays.copyof (old, old.length);                  } else if (C.equals (Long[].class)) {long[] old = (long[]) value;              Value = (long[]) arrays.copyof (old, old.length);                  } else if (C.equals (Boolean[].class)) {boolean[] old = (boolean[]) value;              Value = (boolean[]) arrays.copyof (old, old.length);                  } else if (C.equals (Byte[].class)) {byte[] old = (byte[]) value;      Value = (byte[]) arrays.copyof (old, old.length);        } else {object[] old = (object[]) value;                  object[] tmp = (object[]) arrays.copyof (old, Old.length, Old.getclass ());                  for (int i = 0;i<old.length;i++) {Tmp[i] = Clone (Old[i],level);              } value = tmp;              }} else if (value instanceof map) {//Copy new map map tmp = (MAP) c.newinstance ();              Map org = (map) value;              For (Object Key:org.keySet ()) {Tmp.put (Key, Clone (Org.get (key), level));//Deep copy}          value = tmp;              } else {Object tmp = CreateObject (value);              if (tmp==null) {//Cannot create a new instance then returns the object itself without cloning return value;              } set<field> fields = new hashset<field> ();        while (C!=null&&!c.equals (Object.class)) {Fields.addall (Arrays.aslist (C.getdeclaredfields ()));          c = C.getsuperclass (); } for (Field field:fields) {if (!                      Modifier.isfinal (Field.getmodifiers ())) {//Copy only non-final fields field.setaccessible (true);          Field.set (TMP, Clone (Field.get (value), level));//Deep copy}} value = tmp;      } return value;      /** * Shallow Copy Object * @param value Original Object * @return copied object, copy only one layer * @throws illegalaccessexception * @throws instantiationexception * @throws invocationtargetexception * @throws nosuchmethodexception * /public static Object Clone (object value) throws Illegalaccessexception, Instantiationexception, Invocationtargetexc      Eption, nosuchmethodexception{return Clone (value,1);  }/** * Deep Copy Object * @param value Original Object * @return Copied Object * @throws illegalaccessexception * @throws instantiationexception * @throws invocationtargeTexception * @throws nosuchmethodexception */public static Object Deepclone (object value) throws Illegalac      Cessexception, Instantiationexception, InvocationTargetException, nosuchmethodexception{return Clone (value,-1);     }  }

Java object any deep clone clone tool class share