104 lines
2.4 KiB
Plaintext
104 lines
2.4 KiB
Plaintext
package com.bonus.sys;
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import java.io.ByteArrayOutputStream;
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public class StringHelper {
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private static String hexString = "0123456789ABCDEF";
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public static String replaceAll(String str, String oldStr, String newStr) {
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return str.replaceAll(oldStr, newStr);
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}
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public static boolean contains(String s1, String s2) {
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if (isEmpty(s1)) {
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return false;
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}
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return s1.contains(s2);
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}
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public static int getInt(String valStr){
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return getInt(valStr,0);
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}
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public static int getInt(String valStr,int defaulVal){
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int val = 0;
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try{
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val = Integer.parseInt(valStr);
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}catch (Exception e) {
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val = defaulVal;
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}
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return val;
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}
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public static float getFloat(String valStr){
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return getFloat(valStr,0);
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}
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public static float getFloat(String valStr,int defaulVal){
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float val = 0;
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try{
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val = Float.parseFloat(valStr);
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}catch (Exception e) {
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val = defaulVal;
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}
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return val;
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}
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/*
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* 将字符串编码成16进制数字,适用于所有字符（包括中文）
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*/
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public static String encode(String str) {
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// 根据默认编码获取字节数组
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byte[] bytes = str.getBytes();
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StringBuilder sb = new StringBuilder(bytes.length * 2);
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// 将字节数组中每个字节拆解成2位16进制整数
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for (int i = 0; i < bytes.length; i++) {
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sb.append(hexString.charAt((bytes[i] & 0xf0) >> 4));
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sb.append(hexString.charAt((bytes[i] & 0x0f) >> 0));
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}
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return sb.toString();
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}
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public static String decode(String bytes) {
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ByteArrayOutputStream baos = new ByteArrayOutputStream(bytes.length() / 2);
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// 将每2位16进制整数组装成一个字节
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for (int i = 0; i < bytes.length(); i += 2)
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baos.write((hexString.indexOf(bytes.charAt(i)) << 4 | hexString.indexOf(bytes.charAt(i + 1))));
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return new String(baos.toByteArray());
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}
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public static String fillPrefixZero(int v, int len) {
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String vStr = v + "";
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while (vStr.length() < len) {
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vStr = "0" + vStr;
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}
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return vStr;
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}
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public static boolean isEmpty(String str) {
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if (str == null || "".equals(str.trim())) {
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return true;
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}
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return false;
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}
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/**
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* 判断字符串 不为空
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*/
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public static boolean isNotEmpty(String str) {
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return !isEmpty(str);
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}
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/**
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* 处理时间，获取编号
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*/
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public static String time2Code(String time) {
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if (isNotEmpty(time)) {
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time = time.replace("-", "").replace(" ", "").replace(":", "");
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}
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return time;
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}
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}
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