public class StringUtils {
private StringUtils() {
throw new AssertionError();
}
/**
* 密码
*
* @param pwd
* @return
*/
public static boolean isPwd(String pwd) {
int length = pwd.length();
boolean falg = false;
if (length >= 6 && length <= 16) {
falg = true;
} else {
falg = false;
}
return falg;
}
/**
* 纯数字
*
* @param str
* @return
*/
public static boolean isNumeric(String str) {
for (int i = str.length(); --i >= 0; ) {
if (!Character.isDigit(str.charAt(i))) {
return false;
}
}
return true;
}
/**
* 纯字母
*
* @param
* @return
*/
public static boolean isChar(String data) {
boolean flag = false;
for (int i = data.length(); --i >= 0; ) {
char c = data.charAt(i);
if (((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))) {
flag = true;
} else {
flag = false;
}
}
return flag;
}
/*数字+字母*/
public static boolean ispsd(String psd) {
Pattern p = Pattern
.compile("^([A-Za-z]|[0-9])+$");
Matcher m = p.matcher(psd);
return m.matches();
}
/**
* 手机验证
*
* @param mobiles
* @return
*/
public static boolean isMobileNO(String mobiles) {
Pattern p = Pattern
.compile("^((13[0-9])|(15[^4,\\D])|(14[57])|(17[0])|(17[7])|(18[0,0-9]))\\d{8}$");
Matcher m = p.matcher(mobiles);
return m.matches();
}
/**
* 验证邮政编码
*
* @param post
* @return
*/
public static boolean checkPost(String post) {
if (post.matches("[1-9]\\d{5}(?!\\d)")) {
return true;
} else {
return false;
}
}
/**
* 计算金额
*
* @param argStr
* @return
*/
public static String getFloatDotStr(String argStr) {
float arg = Float.valueOf(argStr);
DecimalFormat fnum = new DecimalFormat("##0.00");
return fnum.format(arg);
}
/**
* is null or its length is 0 or it is made by space
* <p/>
* <pre>
* isBlank(null) = true;
* isBlank("") = true;
* isBlank(" ") = true;
* isBlank("a") = false;
* isBlank("a ") = false;
* isBlank(" a") = false;
* isBlank("a b") = false;
* </pre>
*
* @param str
* @return if string is null or its size is 0 or it is made by space, return
* true, else return false.
*/
public static boolean isBlank(String str) {
return (str == null || str.trim().length() == 0);
}
/**
* is null or its length is 0
* <p/>
* <pre>
* isEmpty(null) = true;
* isEmpty("") = true;
* isEmpty(" ") = false;
* </pre>
*
* @param str
* @return if string is null or its size is 0, return true, else return
* false.
*/
public static boolean isEmpty(CharSequence str) {
return (str == null || str.length() == 0);
}
/**
* get length of CharSequence
* <p/>
* <pre>
* length(null) = 0;
* length(\"\") = 0;
* length(\"abc\") = 3;
* </pre>
*
* @param str
* @return if str is null or empty, return 0, else return
* {@link CharSequence#length()}.
*/
public static int length(CharSequence str) {
return str == null ? 0 : str.length();
}
/**
* null Object to empty string
* <p/>
* <pre>
* nullStrToEmpty(null) = "";
* nullStrToEmpty("") = "";
* nullStrToEmpty("aa") = "aa";
* </pre>
*
* @param str
* @return
*/
public static String nullStrToEmpty(Object str) {
return (str == null ? "" : (str instanceof String ? (String) str : str
.toString()));
}
/**
* capitalize first letter
* <p/>
* <pre>
* capitalizeFirstLetter(null) = null;
* capitalizeFirstLetter("") = "";
* capitalizeFirstLetter("2ab") = "2ab"
* capitalizeFirstLetter("a") = "A"
* capitalizeFirstLetter("ab") = "Ab"
* capitalizeFirstLetter("Abc") = "Abc"
* </pre>
*
* @param str
* @return
*/
public static String capitalizeFirstLetter(String str) {
if (isEmpty(str)) {
return str;
}
char c = str.charAt(0);
return (!Character.isLetter(c) || Character.isUpperCase(c)) ? str
: new StringBuilder(str.length())
.append(Character.toUpperCase(c))
.append(str.substring(1)).toString();
}
/**
* encoded in utf-8
* <p/>
* <pre>
* utf8Encode(null) = null
* utf8Encode("") = "";
* utf8Encode("aa") = "aa";
* utf8Encode("啊啊啊啊") = "%E5%95%8A%E5%95%8A%E5%95%8A%E5%95%8A";
* </pre>
*
* @param str
* @return
* @throws UnsupportedEncodingException if an error occurs
*/
public static String utf8Encode(String str) {
if (!isEmpty(str) && str.getBytes().length != str.length()) {
try {
return URLEncoder.encode(str, "UTF-8");
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(
"UnsupportedEncodingException occurred. ", e);
}
}
return str;
}
/**
* encoded in utf-8, if exception, return defultReturn
*
* @param str
* @param defultReturn
* @return
*/
public static String utf8Encode(String str, String defultReturn) {
if (!isEmpty(str) && str.getBytes().length != str.length()) {
try {
return URLEncoder.encode(str, "UTF-8");
} catch (UnsupportedEncodingException e) {
return defultReturn;
}
}
return str;
}
/**
* get innerHtml from href
* <p/>
* <pre>
* getHrefInnerHtml(null) = ""
* getHrefInnerHtml("") = ""
* getHrefInnerHtml("mp3") = "mp3";
* getHrefInnerHtml("<a innerHtml</a>") = "<a innerHtml</a>";
* getHrefInnerHtml("<a>innerHtml</a>") = "innerHtml";
* getHrefInnerHtml("<a<a>innerHtml</a>") = "innerHtml";
* getHrefInnerHtml("<a href="baidu.com">innerHtml</a>") = "innerHtml";
* getHrefInnerHtml("<a href="baidu.com" title="baidu">innerHtml</a>") = "innerHtml";
* getHrefInnerHtml(" <a>innerHtml</a> ") = "innerHtml";
* getHrefInnerHtml("<a>innerHtml</a></a>") = "innerHtml";
* getHrefInnerHtml("jack<a>innerHtml</a></a>") = "innerHtml";
* getHrefInnerHtml("<a>innerHtml1</a><a>innerHtml2</a>") = "innerHtml2";
* </pre>
*
* @param href
* @return <ul>
* <li>if href is null, return ""</li>
* <li>if not match regx, return source</li>
* <li>return the last string that match regx</li>
* </ul>
*/
public static String getHrefInnerHtml(String href) {
if (isEmpty(href)) {
return "";
}
String hrefReg = ".*<[\\s]*a[\\s]*.*>(.+?)<[\\s]*/a[\\s]*>.*";
Pattern hrefPattern = Pattern
.compile(hrefReg, Pattern.CASE_INSENSITIVE);
Matcher hrefMatcher = hrefPattern.matcher(href);
if (hrefMatcher.matches()) {
return hrefMatcher.group(1);
}
return href;
}
/**
* process special char in html
* <p/>
* <pre>
* htmlEscapeCharsToString(null) = null;
* htmlEscapeCharsToString("") = "";
* htmlEscapeCharsToString("mp3") = "mp3";
* htmlEscapeCharsToString("mp3<") = "mp3<";
* htmlEscapeCharsToString("mp3>") = "mp3\>";
* htmlEscapeCharsToString("mp3&mp4") = "mp3&mp4";
* htmlEscapeCharsToString("mp3"mp4") = "mp3\"mp4";
* htmlEscapeCharsToString("mp3<>&"mp4") = "mp3\<\>&\"mp4";
* </pre>
*
* @param source
* @return
*/
public static String htmlEscapeCharsToString(String source) {
return StringUtils.isEmpty(source) ? source : source
.replaceAll("<", "<").replaceAll(">", ">")
.replaceAll("&", "&").replaceAll(""", "\"");
}
/**
* transform half width char to full width char
* <p/>
* <pre>
* fullWidthToHalfWidth(null) = null;
* fullWidthToHalfWidth("") = "";
* fullWidthToHalfWidth(new String(new char[] {12288})) = " ";
* fullWidthToHalfWidth("！＂＃＄％＆) = "!\"#$%&";
* </pre>
*
* @param s
* @return
*/
public static String fullWidthToHalfWidth(String s) {
if (isEmpty(s)) {
return s;
}
char[] source = s.toCharArray();
for (int i = 0; i < source.length; i++) {
if (source[i] == 12288) {
source[i] = ' ';
// } else if (source[i] == 12290) {
// source[i] = '.';
} else if (source[i] >= 65281 && source[i] <= 65374) {
source[i] = (char) (source[i] - 65248);
} else {
source[i] = source[i];
}
}
return new String(source);
}
/**
* transform full width char to half width char
* <p/>
* <pre>
* halfWidthToFullWidth(null) = null;
* halfWidthToFullWidth("") = "";
* halfWidthToFullWidth(" ") = new String(new char[] {12288});
* halfWidthToFullWidth("!\"#$%&) = "！＂＃＄％＆";
* </pre>
*
* @param s
* @return
*/
public static String halfWidthToFullWidth(String s) {
if (isEmpty(s)) {
return s;
}
char[] source = s.toCharArray();
for (int i = 0; i < source.length; i++) {
if (source[i] == ' ') {
source[i] = (char) 12288;
// } else if (source[i] == '.') {
// source[i] = (char)12290;
} else if (source[i] >= 33 && source[i] <= 126) {
source[i] = (char) (source[i] + 65248);
} else {
source[i] = source[i];
}
}
return new String(source);
}
/**
* 删除String最后一个字符
*
* @param text
* @return
*/
public static String trimLast(String text) {
String result = "";
result = text.substring(0, text.length() - 1);
return result;
}
public static String noZero(int number) {
if (number == 0) {
return "";
} else {
return String.valueOf(number);
}
}
public static void setPricePoint(final EditText editText) {
editText.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
String srt = s.toString();
if (srt.contains(".")) {
String rex = "[0-9]{0,9}\\.{1}[0-9]{0,2}";
Pattern pattern = Pattern.compile(rex);
if (pattern.matches(rex, srt)) {
if (s.length() - 1 - s.toString().indexOf(".") > 2) {
s = s.toString().subSequence(0, s.toString().indexOf(".") + 3);
editText.setText(s);
editText.setSelection(s.length());
}
String strs[] = srt.split("\\.");
if (strs != null && strs.length > 0) {
if (strs[0].length() > 8) {
String newStr = strs[0].substring(0, strs[0].length() - 1);
editText.setText(newStr + "." + strs[1]);
editText.setSelection(newStr.length());
}
System.out.println("strs==" + strs.length);
}
} else {
if (srt.length() != 0) {
if (srt.length() == editText.getSelectionEnd()) {
srt = srt.substring(0, srt.length() - 1);
editText.setText(srt);
editText.setSelection(srt.length());
} else {
srt = srt.substring(0, editText.getSelectionEnd() - 1);
editText.setText(srt);
editText.setSelection(srt.length());
}
}
}
} else {
if (srt.length() > 8) {
if (srt.length() != 0) {
srt = srt.substring(0, srt.length() - 1);
editText.setText(srt);
editText.setSelection(srt.length());
}
}
}
if (s.toString().trim().substring(0).equals(".")) {
s = "0" + s;
editText.setText(s);
editText.setSelection(2);
}
if (s.toString().startsWith("0") && s.toString().trim().length() > 1) {
if (!s.toString().substring(1, 2).equals(".")) {
editText.setText(s.subSequence(0, 1));
editText.setSelection(1);
return;
}
}
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
});
}
}
