实用工具类

Posted 2022-03-21 波子汽水yeah

/**
 * 获取文件名和文件类型
 * @param file
 * @return
 */
public static ImmutablePair getFileNameAndExtension(String file) 
    ImmutablePair<String, String> pair = ImmutablePair.of("", "");
    if (file != null) 
        if (file.contains("/"))
            file = file.substring(file.lastIndexOf("/")+1);
        
        String fileName = file.substring(0, file.lastIndexOf("."));
        String fileSuffix = file.substring(file.lastIndexOf("."));
        pair = ImmutablePair.of(fileName, fileSuffix);
    
    return pair;

提取文本变量  如 你好name  提取name

正则提取文本

/**
 *  String pattern = "\\\\[a-zA-Z0-9]*";
 * @param regex
 * @param source
 * @return
 */
public static List<String> getMatcher(String regex, String source) 
    String result = "";
    //String pattern = "[a-zA-Z0-9]*";
    Pattern pattern = Pattern.compile(regex);
    Matcher matcher = pattern.matcher(source);
    List<String> list = new ArrayList<>();
    while (matcher.find()) 
        result = matcher.group(0);
        list.add(trimStr(result));
    
    return list;

mysql插入时间少8小时问题 指定时区

jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=true&serverTimezone=GMT%2B8

idea代码模板  

 

#if ($PACKAGE_NAME && $PACKAGE_NAME != "")package $PACKAGE_NAME;#end
#parse("File Header.java")
/**
 * @author Maobo
 * @date $YEAR年$MONTH月$DAY日 $TIME
 */
public @interface $NAME 



#if ($PACKAGE_NAME && $PACKAGE_NAME != "")package $PACKAGE_NAME;#end
#parse("File Header.java")
/**
 * @author Maobo
 * @date $YEAR年$MONTH月$DAY日 $TIME
 */
public enum $NAME 



#if ($PACKAGE_NAME && $PACKAGE_NAME != "")package $PACKAGE_NAME;#end
#parse("File Header.java")
/**
 * @author Maobo
 * @date $YEAR年$MONTH月$DAY日 $TIME
 */
public interface $NAME 



#if ($PACKAGE_NAME && $PACKAGE_NAME != "")package $PACKAGE_NAME;#end
#parse("File Header.java")
/**
 * @author Maobo
 * @date $YEAR年$MONTH月$DAY日 $TIME
 */
public class $NAME 

没什么好写的，为了保持一个月有一篇的好习惯，随便写点，有点水了