java解析任意层数json字符串的方法

一个方法解析任意层数的json字符窜：使用正则表达式，递归算法，将jsonarray解析出后添加到list, jsonobject添加至map

//解析策略，有可能是解析json字符串，有可能为数据中的图片地址，email等
package cc.util.regex;
public enum RegexPolicy {
 Json("Json"),
 Image("ImageFromHtml");

 private String value;
 RegexPolicy (String value) {
  this.value = value;
 }

 @Override
 public String toString() {
  // TODO Auto-generated method stub
  return value;
 }
}

package cc.util.regex;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.util.Log;
/**
 * A static Class help to Analyze data
 * @author wangcccong 
 * @version 1.140122
 * create at: 14-02-14
 */
public class RegexUtil {
 //与解析策略相匹配的正则表达式
 //private static final String REGULAR_IMG_HTML = "Notice: if return Map you should better invoke map.get(null) to obtain value.
  * @see {@link java.util.regex.Matcher}, {@link java.util.regex.Pattern}
  * @param jsonStr
  * @return {@link java.util.Map} or {@link java.util.List} or {@link java.lang.String}
  */
 private static Object regexJson(final String jsonStr) {
  if (jsonStr == null) throw new NullPointerException("JsonString shouldn't be null");
  try {
   if (isJsonObject(jsonStr)) {
    final Pattern pattern = Pattern.compile(REGULAR_JSON_ITEM_NAME);
    final Matcher matcher = pattern.matcher(jsonStr);
    final Map map = new HashMap();
    final JSONObject jsonObject = new JSONObject(jsonStr);
    for ( ; matcher.find(); ) {
     String groupName = matcher.group(1);
     Object obj = jsonObject.opt(groupName);
     if (obj != null && isJsonArray(obj.toString()))
      matcher.region(matcher.end() + obj.toString().replace("\\", "").length(), matcher.regionEnd());
     if (obj != null && !map.containsKey(groupName))
      map.put(groupName, regexJson(obj.toString()));
    }
    return map;
   } else if (isJsonArray(jsonStr)) {
    List