对象和Map转化gongju

 package czc.superzig.modular.utils;

 import java.lang.reflect.Field;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;

 /** 对象转Map工具类
  * <b>
  * </b><br><br><i>Description</i> :
  * <br><br>Date: 2019/6/18 ${time}    <br>Author : dxl
  */
 public class ObjToMap {
     private static Pattern linePattern = Pattern.compile("_(\\w)");
     private static Pattern humpPattern = Pattern.compile("[A-Z]");

     /**
      * <b>对象转map
      * @date 2019年7月1日 下午2:53:33    <br><i>author</i> : dxl
      */
     public static Map<String, Object> modelToMap(Object obj) {

         Map<String, Object> map = new HashMap<String, Object>();
         // 获取f对象对应类中的所有属性域
         Field[] fields = obj.getClass().getDeclaredFields();
         for (int i = 0, len = fields.length; i < len; i++) {
             String varName = fields[i].getName();
             if("serialVersionUID".equals(varName)){
                 continue;
             }
             //将key置为小写，默认为对象的属性
              varName = humpToLine(varName).toString();
             try {
                 // 获取原来的访问控制权限
                 boolean accessFlag = fields[i].isAccessible();
                 // 修改访问控制权限
                 fields[i].setAccessible(true);
                 // 获取在对象f中属性fields[i]对应的对象中的变量
                 Object o = fields[i].get(obj);
                 if (o != null){
                     map.put(varName, o);}
                 // System.out.println("传入的对象中包含一个如下的变量：" + varName + " = " + o);
                 // 恢复访问控制权限
                 fields[i].setAccessible(accessFlag);
             } catch (IllegalArgumentException ex) {
                 ex.printStackTrace();
             } catch (IllegalAccessException ex) {
                 ex.printStackTrace();
             }
         }
         return map;
     }
     /** 下划线转驼峰 */
     public static String lineToHump(String str) {
         str = str.toLowerCase();
         Matcher matcher = linePattern.matcher(str);
         StringBuffer sb = new StringBuffer();
         while (matcher.find()) {
             matcher.appendReplacement(sb, matcher.group(1).toUpperCase());
         }
         matcher.appendTail(sb);
         return sb.toString();
     }
     /** 驼峰转下划线,效率比上面高 */
     public static String humpToLine(String str) {
         Matcher matcher = humpPattern.matcher(str);
         StringBuffer sb = new StringBuffer();
         while (matcher.find()) {
             matcher.appendReplacement(sb, "_" + matcher.group(0).toLowerCase());
         }
         matcher.appendTail(sb);
         return sb.toString();
     }
 }