1 package com.liveyc.framework.util;
2
3 import java.io.UnsupportedEncodingException;
4 import java.net.URLDecoder;
5 import java.text.DecimalFormat;
6 import java.util.ArrayList;
7 import java.util.HashMap;
8 import java.util.Iterator;
9 import java.util.List;
10 import java.util.Map;
11 import java.util.StringTokenizer;
12
13 import org.apache.commons.collections.CollectionUtils;
14
15
16 /**
17 * @author aitf
18 * @version 创建时间：2016年12月15日 下午2:38:30
19 * 类说明
20 */
21 public class StringUtil {
22
23 /**
24 * <li>判断字符串是否为空值</li>
25 * <li>NULL、空格均认为空值</li>.
26 *
27 * @param value
28 * the value
29 *
30 * @return true, if checks if is empty
31 */
32 public static boolean isEmpty(String value) {
33 return null == value || "".equals(value.trim());
34 }
35
36
37 /**
38 * 去除,分隔符，用于金额数值去格式化.
39 *
40 * @param value
41 * the value
42 *
43 * @return the string
44 */
45 public static String decimal(String value) {
46 if (null == value || "".equals(value.trim())) {
47 return "0";
48 } else {
49 return value.replaceAll(",", "");
50 }
51 }
52
53 /**
54 * 在数组中查找字符串.
55 *
56 * @param params
57 * the params
58 * @param name
59 * the name
60 * @param ignoreCase
61 * the ignore case
62 *
63 * @return the int
64 */
65 public static int indexOf(String[] params, String name, boolean ignoreCase) {
66 if (params == null)
67 return -1;
68 for (int i = 0, j = params.length; i < j; i++) {
69 if (ignoreCase && params[i].equalsIgnoreCase(name)) {
70 return i;
71 } else if (params[i].equals(name)) {
72 return i;
73 }
74 }
75 return -1;
76 }
77
78 /**
79 * 查询Str2在Str1中出现几次
80 *
81 * @param str1
82 * @param str2
83 * @return
84 */
85 public static int indexAllOf(String str1, String str2) {
86 int he = 0;
87 for (int i = 0; i < str1.length(); i++) {
88 int t = str1.indexOf(str2, i);
89 if (i == t) {
90 he++;
91 }
92 }
93 return he;
94 }
95
96 /**
97 * 将字符转数组.
98 *
99 * @param str
100 * the str
101 *
102 * @return the string[]
103 */
104 public static String[] toArr(String str) {
105 String inStr = str;
106 String a[] = null;
107 try {
108 if (null != inStr) {
109 StringTokenizer st = new StringTokenizer(inStr, ",");
110 if (st.countTokens() > 0) {
111 a = new String[st.countTokens()];
112 int i = 0;
113 while (st.hasMoreTokens()) {
114 a[i++] = st.nextToken();
115 }
116 }
117 }
118 } catch (Exception e) {
119 e.printStackTrace();
120 }
121 return a;
122 }
123
124 /**
125 * 将字符转数组.
126 *
127 * @param str
128 * the str
129 * @param splitChar
130 * the split char
131 *
132 * @return the string[]
133 */
134 public static String[] toArr(String str, String splitChar) {
135 String inStr = str;
136 String a[] = null;
137 try {
138 if (null != inStr) {
139 StringTokenizer st = new StringTokenizer(inStr, splitChar);
140 if (st.countTokens() > 0) {
141 a = new String[st.countTokens()];
142 int i = 0;
143 while (st.hasMoreTokens()) {
144 a[i++] = st.nextToken();
145 }
146 }
147 }
148 } catch (Exception e) {
149 e.printStackTrace();
150 }
151 return a;
152 }
153
154 /**
155 * 字符串数组包装成字符串.
156 *
157 * @param ary
158 * the ary
159 * @param s
160 * 包装符号如 ‘ 或 "
161 *
162 * @return the string
163 */
164 public static String toStr(String[] ary, String s) {
165 if (ary == null || ary.length < 1)
166 return "";
167 StringBuffer bf = new StringBuffer();
168 bf.append(s);
169 bf.append(ary[0]);
170 for (int i = 1; i < ary.length; i++) {
171 bf.append(s).append(",").append(s);
172 bf.append(ary[i]);
173 }
174 bf.append(s);
175 return bf.toString();
176 }
177
178 /**
179 * 得到字符的编码格式
180 *
181 * @param str
182 * @return
183 */
184 public static String getEncoding(String str) {
185 String encode = "GB2312";
186 try {
187 if (str.equals(new String(str.getBytes(encode), encode))) {
188 String s = encode;
189 return s;
190 }
191 } catch (Exception exception) {
192 }
193 encode = "ISO-8859-1";
194 try {
195 if (str.equals(new String(str.getBytes(encode), encode))) {
196 String s1 = encode;
197 return s1;
198 }
199 } catch (Exception exception1) {
200 }
201 encode = "UTF-8";
202 try {
203 if (str.equals(new String(str.getBytes(encode), encode))) {
204 String s2 = encode;
205 return s2;
206 }
207 } catch (Exception exception2) {
208 }
209 encode = "GBK";
210 try {
211 if (str.equals(new String(str.getBytes(encode), encode))) {
212 String s3 = encode;
213 return s3;
214 }
215 } catch (Exception exception3) {
216 }
217 return "";
218 }
219
220
221 /**
222 * utf8转码 Description :.
223 *
224 * @param str
225 * the str
226 *
227 * @return the string
228 */
229 public static String utf8Decoder(String str) {
230 try {
231 if (str != null) {
232 return URLDecoder.decode(str, "UTF-8");
233 }
234 } catch (UnsupportedEncodingException e) {
235 e.printStackTrace();
236 }
237 return str;
238 }
239
240
241 public static String changeCharset(String str, String oldCharset, String newCharset)
242 throws UnsupportedEncodingException {
243 if (str != null) {
244 // 用旧的字符编码解码字符串。解码可能会出现异常。
245 byte[] bs = str.getBytes(oldCharset);
246 // 用新的字符编码生成字符串
247 return new String(bs, newCharset);
248 }
249 return null;
250 }
251
252
253 /**
254 * 过滤掉高亮的html
255 * @param str
256 * @return
257 */
258 public static String htmlFilter(String str) {
259 if (isEmpty(str)) {
260 return str;
261 }
262 str = str.replace("<font color=‘red‘>", "");
263 str = str.replace("<font color=‘blue‘>", "");
264 str = str.replace("</font>", "");
265
266 return str;
267 }
268
269 public static String trimString(String str){
270 if(isEmpty(str)){
271 return str;
272 }
273 return str.trim();
274 }
275
276
277 public static String encodeToUtf(String str) throws Exception {
278 if(isEmpty(str)){
279 return str;
280 }
281 return new String(str.getBytes("iso-8859-1"), "UTF-8");
282 }
283
284 /**
285 * 根据身份证号转性别
286 * @param sfzh
287 * @return
288 */
289 public static String converToSex(String sfzh){
290 int sex = 0;
291 if(StringUtil.isEmpty(sfzh)){
292 return "";
293 }else{
294 if(sfzh.length()==15){
295 sex = Integer.parseInt(sfzh.substring(13,14));
296 }else if(sfzh.length()==18){
297 sex = Integer.parseInt(sfzh.substring(16,17));
298 }
299 if(sex%2 == 0){
300 return "女";
301 }else{
302 return "男";
303 }
304 }
305 }
306
307 /**
308 * 设置地址的Map,并去重
309 * @param addrMap
310 * @param fromType
311 * @param addrs
312 */
313 public static void setAddr2Map(Map addrMap,String addrs,String fromType){
314 String[] addrls = null ;
315 if(addrMap==null){
316 addrMap = new HashMap();
317 }
318 if(addrMap.containsKey(fromType)){
319 String strAddr = (String)addrMap.get(fromType);
320 if(strAddr!=null && strAddr.trim().length()>0){
321 addrls = strAddr.split(",");
322 }
323
324 if(!isExsit(addrls,addrs)){
325 strAddr +=","+addrs;
326 addrMap.put(fromType, strAddr);
327 }
328 }else{
329 addrMap.put(fromType, addrs);
330 }
331 }
332
333
334 /**
335 * 字符口串是否在数据组存在
336 * @param addrls
337 * @param addrs
338 * @return
339 */
340 private static boolean isExsit(String[] addrls,String addrs){
341 if(addrls!=null && addrls.length>0){
342 for(int i=0;i<addrls.length;i++){
343 if(addrls[i].equals(addrs)){
344 return true;
345 }
346 }
347 }
348 return false;
349 }
350 /**
351 * 把Map转换成String
352 * @param addrMap
353 * @return
354 */
355 public static String convMap2String(Map addrMap){
356 StringBuilder tempBuf =new StringBuilder();
357 Iterator<Map.Entry> it = addrMap.entrySet().iterator();
358 while (it.hasNext()) {
359 Map.Entry<String, String> entry = it.next();
360 String fldName = entry.getKey();
361 String fldValue = entry.getValue();
362 tempBuf.append(fldValue).append("(").append(fldName).append(");");
363 }
364 return tempBuf.toString();
365 }
366
367 //字节转换
368 public static String formetFileSize(long fileS) {
369
370 DecimalFormat df = new DecimalFormat("#.00");
371 String fileSizeString = "";
372 if (fileS < 1024) {
373 fileSizeString = df.format((long) fileS) + "B";
374 } else if (fileS < 1048576) {
375 fileSizeString = df.format((long) fileS / 1024) + "KB";
376 } else if (fileS < 1073741824) {
377 fileSizeString = df.format((long) fileS / 1048576) + "MB";
378 } else if(fileS < 1099511627776l) {
379 fileSizeString = df.format((long) fileS / 1073741824) + "GB";
380 } else{
381 fileSizeString = df.format((long) fileS / 1099511627776l) + "TB";
382 }
383 return fileSizeString;
384 }
385
386 public static void main(String[] args) {
387
388 long a = 1948065583104l;
389 System.out.println(formetFileSize(a));
390 }
391
392 }
时间： 2024-10-20 19:37:58