package com.moral.common.util;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class StringUtils {
	public static final char UNDERLINE = '_';

    /**
     * 驼峰格式字符串转换为下划线格式字符串
     * 
     * @param param
     * @return
     */
    public static String camelToUnderline(String param) {
        if (param == null || "".equals(param.trim())) {
            return "";
        }
        int len = param.length();
        StringBuilder sb = new StringBuilder(len);
        for (int i = 0; i < len; i++) {
            char c = param.charAt(i);
            if (Character.isUpperCase(c)) {
                sb.append(UNDERLINE);
                sb.append(Character.toLowerCase(c));
            } else {
                sb.append(c);
            }
        }
        return sb.toString();
    }

    
    /**
     * //首字母转大写
     * 
     * @param s
     * @return
     */
    public static String toUpperCaseFirstOne(String s){
        StringBuilder sb = new StringBuilder(s);
        sb.setCharAt(0, Character.toUpperCase(sb.charAt(0)));
        return sb.toString();
    }
	public static boolean isNullOrEmpty(String toTest) {
		return toTest == null || toTest.length() == 0;
	}
	public static Object stringToObject4Type(Class<?> type,String value) throws Exception{
		Object result = value;
		if (type == double.class || type == Double.class) {
			result = Double.parseDouble(value);
		} else if (type == float.class || type == Float.class) {
			result = Float.parseFloat(value);
		} else if (type == long.class || type == Long.class) {
			result = Long.parseLong(value);
		} else if (type == int.class || type == Integer.class) {
			result = Integer.parseInt(value);
		} else if (type == short.class || type == Short.class) {
			result = Short.parseShort(value);
		} else if (type == boolean.class || type == Boolean.class) {
			result = Boolean.parseBoolean(value);
		} else if (type == Date.class) {
			value = value.replace("T", " ");
			SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
			try {
				result = df.parse(value);
			} catch (Exception e) {
				df = new SimpleDateFormat("yyyy-MM-dd HH:mm");
				try {
					result = df.parse(value);
				} catch (ParseException e1) {
					df = new SimpleDateFormat("yyyy-MM-dd");
					try {
						result = df.parse(value);
					} catch (ParseException e2) {
					}
				}
			}
		}
		return result;
	}

}