格式化工具,数字、字符串、Object类型之间的常用转换 Created by Administrator on 2016/3/7. @author Steven Duan @version 1.0
| 7 | * @version 1.0 |
| 8 | */ |
| 9 | public final class ToolFormat { |
| 10 | |
| 11 | private ToolFormat() { |
| 12 | throw new UnsupportedOperationException("我是工具类,别初始化我。。。"); |
| 13 | } |
| 14 | |
| 15 | /** |
| 16 | * 判断是否为空 , |
| 17 | * |
| 18 | * @param arg |
| 19 | * 要判断的值 |
| 20 | * |
| 21 | * @return 为空返回true, 否则返回false |
| 22 | */ |
| 23 | public static boolean isEmpty(Object arg) { |
| 24 | return toStringTrim(arg).length() == 0; |
| 25 | } |
| 26 | |
| 27 | /** |
| 28 | * Object 转换成 String 为null 返回空字符,使用:toString(值,默认值[选填]) |
| 29 | * |
| 30 | * @param args |
| 31 | * 参数序列 |
| 32 | * |
| 33 | * @return 返回转换后的String |
| 34 | */ |
| 35 | public static String toString(Object... args) { |
| 36 | String def = ""; |
| 37 | if (args != null) { |
| 38 | if (args.length > 1) { |
| 39 | def = toString(args[args.length - 1]); |
| 40 | } |
| 41 | Object obj = args[0]; |
| 42 | if (obj == null) { |
| 43 | return def; |
| 44 | } |
| 45 | return obj.toString(); |
| 46 | } else { |
| 47 | return def; |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * Object 转换成 String[去除所以空格]; 为null 返回空字符,使用:toStringTrim(值,默认值[选填]) |
| 53 | * |
| 54 | * @param args |
| 55 | * 参数序列 |
| 56 | * |
| 57 | * @return 返回转换后的String |
| 58 | */ |
| 59 | public static String toStringTrim(Object... args) { |
| 60 | String str = toString(args); |
| 61 | return str.replaceAll("\\s*", ""); |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * 获取人性化的异常信息 |
| 66 | * |
nothing calls this directly
no outgoing calls
no test coverage detected