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Java Reflect ·´Éä»úÖÆ ѧϰ±Ê¼Ç [ÍòÄÜtoString·½·¨]

ÀûÓÃJava Reflect»úÖÆ±àдÍòÄÜtoString()·½·¨:
 
 
package com.accp.test.filed;

import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.List;

public class ObjectAnalyzer {

private List<Object> visited = new ArrayList<Object>();

public String toString(Object obj) {

if (obj == null)
return null; // Èç¹ûobjΪ¿Õ..·µ»Ønull
if (visited.contains(obj))
return "..."; // Èç¹ûvisitedÖÐÒѾ­°üº¬obj,·µ»Ø...

visited.add(obj);

Class c1 = obj.getClass(); // µÃµ½ÔËÐÐʱ¶ÔÏó

if (c1 == String.class)
return (String) obj; // Èç¹ûc1ÊÇStringÀàÐÍ,Ö±½Óת»»

if (c1.isArray()) { // Èç¹ûÊÇÊý×éÀàÐÍ
String r = c1.getComponentType() + "[]{"; // µÃµ½¸ÃÊý×é×é¼þÀàÐ͵ÄClass

for (int i = 0; i < Array.getLength(obj); i++) {
if (i > 0)
r += ",";
Object var = Array.get(obj, i); // È¡µÃobj[i]ÔªËØµÄÖµ
if (c1.getComponentType().isPrimitive()) // Èç¹ûΪ»ù±¾ÀàÐÍ
r += var;
else
r += toString(var); // µÝ¹éµ÷ÓÃ
}
return r + "}";
}

String r = c1.getName(); // µÃµ½objÃû³Æ

// ¼ì²é±¾ÀàÓòºÍËùÓг¬ÀàÓò
do {
r += "[";
Field[] fields = c1.getDeclaredFields(); // µÃµ½±¾ÀàºÍ³¬ÀàËùÓÐÓò
AccessibleObject.setAccessible(fields, true); // ½«ËùÓÐÓòÉèÖÃΪ¿É·ÃÎʵÄ.

for (Field field : fields) {
if (!Modifier.isStatic(field.getModifiers())) {
if (!r.endsWith("["))
r += ",";
r += field.getName() + "=";

try {
Class type = field.getType(); // µÃµ½×Ö¶ÎÀàÐÍ
Object var =


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