package com.java1234.utils;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
/**
* 字符串工具类
* @author
*
*/
public class StringUtil {
/**
* 判断是否是空
* @param str
* @return
*/
public static boolean isEmpty(String str){
if(str==null||"".equals(str.trim())){
return true;
}else{
return false;
}
}
/**
* 判断是否不是空
* @param str
* @return
*/
public static boolean isNotEmpty(String str){
if((str!=null)&&!"".equals(str.trim())){
return true;
}else{
return false;
}
}
/**
* 格式化模糊查询
* @param str
* @return
*/
public static String formatLike(String str){
if(isNotEmpty(str)){
return "%"+str+"%";
}else{
return null;
}
}
/**
* 过滤掉集合里的空格
* @param list
* @return
*/
public static List<String> filterWhite(List<String> list){
List<String> resultList=new ArrayList<String>();
for(String l:list){
if(isNotEmpty(l)){
resultList.add(l);
}
}
return resultList;
}
/**
* 去除html标签
*/
public static String stripHtml(String content) {
// <p>段落替换为换行
content = content.replaceAll("<p .*?>", "\r\n");
// <br><br/>替换为换行
content = content.replaceAll("<br\\s*/?>", "\r\n");
// 去掉其它的<>之间的东西
content = content.replaceAll("\\<.*?>", "");
// 去掉空格
content = content.replaceAll(" ", "");
return content;
}
/**
* 生成六位随机数
* @return
*/
public static String genSixRandomNum(){
Random random = new Random();
String result="";
for (int i=0;i<6;i++)
{
result+=random.nextInt(10);
}
return result;
}
/**
* 生成由[A-Z,0-9]生成的随机字符串
* @param length 欲生成的字符串长度
* @return
*/
public static String getRandomString(int length){
Random random = new Random();
StringBuffer sb = new StringBuffer();
for(int i = 0; i < length; ++i){
int number = random.nextInt(2);
long result = 0;
switch(number){
case 0:
result = Math.round(Math.random() * 25 + 65);
sb.append(String.valueOf((char)result));
break;
case 1:
sb.append(String.valueOf(new Random().nextInt(10)));
break;
}
}
return sb.toString();
}
}
标签:return,String,StringUtil,content,static,str,public
From: https://www.cnblogs.com/guozhiqiang/p/16898989.html