com.tmsps.ne4spring.utils.StrUtil Maven / Gradle / Ivy
package com.tmsps.ne4spring.utils;
/**
*
* @author zhangwei [email protected]
*
*/
public class StrUtil {
/**
* 处理标签字符串，用于初始化
*/
public static String getTagsStr(String tags) {
if (tags.length() == 0) {
return tags;
}
String[] strs = tags.split(",");
StringBuilder sb = new StringBuilder();
for (String str : strs) {
sb.append("'").append(str).append("',");
}
return sb.deleteCharAt(sb.length() - 1).toString();
}
/**
* 首字母变小写
*/
public static String firstCharToLowerCase(String str) {
char firstChar = str.charAt(0);
if (firstChar >= 'A' && firstChar <= 'Z') {
char[] arr = str.toCharArray();
arr[0] += ('a' - 'A');
return new String(arr);
}
return str;
}
/**
* 首字母变大写
*/
public static String firstCharToUpperCase(String str) {
char firstChar = str.charAt(0);
if (firstChar >= 'a' && firstChar <= 'z') {
char[] arr = str.toCharArray();
arr[0] -= ('a' - 'A');
return new String(arr);
}
return str;
}
/**
* 字符串为 null 或者为 "" 时返回 true
*/
public static boolean isBlank(String str) {
return str == null || "".equals(str.trim()) ? true : false;
}
/**
* 字符串不为 null 而且不为 "" 时返回 true
*/
public static boolean notBlank(String str) {
return str == null || "".equals(str.trim()) ? false : true;
}
public static boolean notBlank(String... strings) {
if (strings == null)
return false;
for (String str : strings)
if (str == null || "".equals(str.trim()))
return false;
return true;
}
public static boolean notNull(Object... paras) {
if (paras == null)
return false;
for (Object obj : paras)
if (obj == null)
return false;
return true;
}
public static String toInStr(String strs) {
if (ChkUtil.isNull(strs)) {
return "";
}
String origialStr[] = strs.split(",");
StringBuilder SB = new StringBuilder();
for (String string : origialStr) {
SB.append("\'").append(string).append("\'").append(",");
}
return SB.subSequence(0, SB.length() - 1).toString();
}
public static String toInStr(String... strs) {
StringBuilder SB = new StringBuilder();
for (String string : strs) {
SB.append("\'").append(string).append("\'").append(",");
}
return SB.subSequence(0, SB.length() - 1).toString();
}
public static String toLikeOrStr(String strs) {
String origialStr[] = strs.split(",");
for (int i = 0; i < origialStr.length; i++) {
origialStr[i] = "\"%" + origialStr[i] + "%\"";
}
return String.join(" or ", origialStr);
}
}