com.minlia.cloud.utils.StringUtil Maven / Gradle / Ivy
package com.minlia.cloud.utils;
import com.google.common.collect.Lists;
import org.apache.commons.lang3.StringEscapeUtils;
import org.springframework.core.io.DefaultResourceLoader;
import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.StringTokenizer;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* 字符串工具类, 继承org.apache.commons.lang3.StringUtils类
*
* @author lijie version 2014-1-20 下午3:37:29
*/
public class StringUtil extends org.apache.commons.lang3.StringUtils {
public static final String SPLIT_DEFAULT = ",";
public static final String SPLIT_FILE_DEFAULT = "|";
private static final char SEPARATOR = '_';
private static final String CHARSET_NAME = "UTF-8";
/**
* 获取一定位数的随机字符串
***/
public static String getRandomString(int size) {
char[] c = {'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', 'z', 'x', 'c', 'v', 'b', 'n', 'm'};
Random random = new Random();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < size; ++i)
sb.append(c[(Math.abs(random.nextInt()) % c.length)]);
return sb.toString();
}
public static String[] splitDefault(final String str) {
return split(str, SPLIT_DEFAULT);
}
/**
* 转换为字节数组
*
* @param str
* @return
*/
public static byte[] getBytes(String str) {
if (str != null) {
try {
return str.getBytes(CHARSET_NAME);
} catch (UnsupportedEncodingException e) {
return null;
}
} else {
return null;
}
}
/**
* 转换为字节数组
*
* @param str
* @return
*/
public static String toString(byte[] bytes) {
try {
return new String(bytes, CHARSET_NAME);
} catch (UnsupportedEncodingException e) {
return EMPTY;
}
}
/**
* 是否包含字符串
*
* @param str 验证字符串
* @param strs 字符串组
* @return 包含返回true
*/
public static boolean inString(String str, String... strs) {
if (str != null) {
for (String s : strs) {
if (str.equals(trim(s))) {
return true;
}
}
}
return false;
}
/**
* 替换掉HTML标签方法
*/
public static String replaceHtml(String html) {
if (isBlank(html)) {
return "";
}
String regEx = "<.+?>";
Pattern p = Pattern.compile(regEx);
Matcher m = p.matcher(html);
String s = m.replaceAll("");
return s;
}
/**
* 替换为手机识别的HTML，去掉样式及属性，保留回车。
*
* @param html
* @return
*/
public static String replaceMobileHtml(String html) {
if (html == null) {
return "";
}
return html.replaceAll("<([a-z]+?)\\s+?.*?>", "<$1>");
}
/**
* 替换为手机识别的HTML，去掉样式及属性，保留回车。
*
* @param txt
* @return
*/
public static String toHtml(String txt) {
if (txt == null) {
return "";
}
return replace(replace(Encodes.escapeHtml(txt), "\n", "
"), "\t", " ");
}
/**
* 缩略字符串（不区分中英文字符）
*
* @param str 目标字符串
* @param length 截取长度
* @return
*/
public static String abbr(String str, int length) {
if (str == null) {
return "";
}
try {
StringBuilder sb = new StringBuilder();
int currentLength = 0;
for (char c : replaceHtml(StringEscapeUtils.unescapeHtml4(str)).toCharArray()) {
currentLength += String.valueOf(c).getBytes("GBK").length;
if (currentLength <= length - 3) {
sb.append(c);
} else {
sb.append("...");
break;
}
}
return sb.toString();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return "";
}
public static String abbr2(String param, int length) {
if (param == null) {
return "";
}
StringBuffer result = new StringBuffer();
int n = 0;
char temp;
boolean isCode = false; // 是不是HTML代码
boolean isHTML = false; // 是不是HTML特殊字符,如
for (int i = 0; i < param.length(); i++) {
temp = param.charAt(i);
if (temp == '<') {
isCode = true;
} else if (temp == '&') {
isHTML = true;
} else if (temp == '>' && isCode) {
n = n - 1;
isCode = false;
} else if (temp == ';' && isHTML) {
isHTML = false;
}
try {
if (!isCode && !isHTML) {
n += String.valueOf(temp).getBytes("GBK").length;
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
if (n <= length - 3) {
result.append(temp);
} else {
result.append("...");
break;
}
}
// 取出截取字符串中的HTML标记
String temp_result = result.toString().replaceAll("(>)[^<>]*(]*/?>",
"");
// 去掉成对的HTML标记
temp_result = temp_result.replaceAll("<([a-zA-Z]+)[^<>]*>(.*?)", "$2");
// 用正则表达式取出标记
Pattern p = Pattern.compile("<([a-zA-Z]+)[^<>]*>");
Matcher m = p.matcher(temp_result);
List endHTML = Lists.newArrayList();
while (m.find()) {
endHTML.add(m.group(1));
}
// 补全不成对的HTML标记
for (int i = endHTML.size() - 1; i >= 0; i--) {
result.append("");
}
return result.toString();
}
/**
* 转换为Double类型
*/
public static Double toDouble(Object val) {
if (val == null) {
return 0D;
}
try {
return Double.valueOf(trim(val.toString()));
} catch (Exception e) {
return 0D;
}
}
/**
* 转换为Float类型
*/
public static Float toFloat(Object val) {
return toDouble(val).floatValue();
}
/**
* 转换为Long类型
*/
public static Long toLong(Object val) {
return toDouble(val).longValue();
}
/**
* 转换为Integer类型
*/
public static Integer toInteger(Object val) {
return toLong(val).intValue();
}
/**
* 驼峰命名法工具
*
* @return toCamelCase("hello_world") == "helloWorld" toCapitalizeCamelCase("hello_world") == "HelloWorld" toUnderScoreCase("helloWorld") = "hello_world"
*/
public static String toCamelCase(String s) {
return toCamelCase(s, SEPARATOR);
}
public static String toCamelCase(String s, Character... splits) {
if (s == null) {
return null;
}
StringBuilder sb = new StringBuilder(s.length());
boolean upperCase = false;
List splitList = Lists.newArrayList(splits);
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
if (splitList.contains(c)) {
upperCase = true;
} else if (upperCase) {
sb.append(Character.toUpperCase(c));
upperCase = false;
} else {
sb.append(c);
}
}
return sb.toString();
}
/**
* 驼峰命名法工具
*
* @return toCamelCase("hello_world") == "helloWorld" toCapitalizeCamelCase("hello_world") == "HelloWorld" toUnderScoreCase("helloWorld") = "hello_world"
*/
public static String toCapitalizeCamelCase(String s) {
if (s == null) {
return null;
}
s = toCamelCase(s);
return s.substring(0, 1).toUpperCase() + s.substring(1);
}
/**
* 驼峰命名法工具
*
* @return toCamelCase("hello_world") == "helloWorld" toCapitalizeCamelCase("hello_world") == "HelloWorld" toUnderScoreCase("helloWorld") = "hello_world"
*/
public static String toUnderScoreCase(String s) {
if (s == null) {
return null;
}
StringBuilder sb = new StringBuilder();
boolean upperCase = false;
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
boolean nextUpperCase = true;
if (i < (s.length() - 1)) {
nextUpperCase = Character.isUpperCase(s.charAt(i + 1));
}
if ((i > 0) && Character.isUpperCase(c)) {
if (!upperCase || !nextUpperCase) {
sb.append(SEPARATOR);
}
upperCase = true;
} else {
upperCase = false;
}
sb.append(Character.toLowerCase(c));
}
return sb.toString();
}
/**
* 获取工程路径
*
* @return
*/
public static String getProjectPath() {
String projectPath = "";
try {
File file = new DefaultResourceLoader().getResource("").getFile();
if (file != null) {
while (true) {
File f = new File(file.getPath() + File.separator + "src" + File.separator + "main");
if (f == null || f.exists()) {
break;
}
if (file.getParentFile() != null) {
file = file.getParentFile();
} else {
break;
}
}
projectPath = file.toString();
}
} catch (IOException e) {
e.printStackTrace();
}
return projectPath;
}
/**
* 如果不为空，则设置值
*
* @param target
* @param source
*/
public static void setValueIfNotBlank(String target, String source) {
if (isNotBlank(source)) {
target = source;
}
}
/**
* 转换为JS获取对象值，生成三目运算返回结果
*
* @param objectString 对象串 例如：row.user.id 返回：!row?'':!row.user?'':!row.user.id?'':row.user.id
*/
public static String jsGetVal(String objectString) {
StringBuilder result = new StringBuilder();
StringBuilder val = new StringBuilder();
String[] vals = split(objectString, ".");
for (int i = 0; i < vals.length; i++) {
val.append("." + vals[i]);
result.append("!" + (val.substring(1)) + "?'':");
}
result.append(val.substring(1));
return result.toString();
}
/**
* @param string
* @param separate
* @return
* @description 按指定分隔符解析字符串
* @date 2008-4-15
* @author cy
*/
public static List parseStringTokenizer(String string, String separate) {
List list = new ArrayList();
StringTokenizer objTokenizer = new StringTokenizer(string, separate);
while (objTokenizer.hasMoreTokens()) {
list.add(objTokenizer.nextToken().trim());
}
return list;
}
}
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