参悟spring中的StringUtils部分强大的功能

参悟spring中的StringUtils部分强大的功能：

System.out.println(org.springframework.util.StringUtils.containsWhitespace("sfas"));//是否有空白System.out.println(org.springframework.util.StringUtils.trimWhitespace(" - dfasd- "));//去除前后空格System.out.println(org.springframework.util.StringUtils.trimAllWhitespace(" - - - - fshjk     s j - -"));//去除所有空格System.out.println(org.springframework.util.StringUtils.trimLeadingWhitespace("  - - - - fshjk     s j - - "));//去除第字符串开头的空格System.out.println(org.springframework.util.StringUtils.trimTrailingWhitespace("  - - - - fshjk     s j - - "));//去除第字符串结尾的空格System.out.println(org.springframework.util.StringUtils.substringMatch("f sdfc",2,"sd"));//判断字符串第几个位置起为某值System.out.println(org.springframework.util.StringUtils.countOccurrencesOf("qwertyrtttttt", "t"));//判断字符串字符重复次数System.out.println(org.springframework.util.StringUtils.replace("yuiyuiyui", "y", "m"));//字符替换System.out.println(org.springframework.util.StringUtils.delete("yuiyuiyui", "y"));//删除匹配的字符System.out.println(org.springframework.util.StringUtils.deleteAny("yuiyuiyui", "yi"));//删除出现且匹配的字符System.out.println(org.springframework.util.StringUtils.quote("yuiyuiyui"));//为字符串加上''号System.out.println(org.springframework.util.StringUtils.unqualify("yuiyuiy.ui"));//字符串截取，，从'.'号+1的未知开始System.out.println(org.springframework.util.StringUtils.unqualify("yuiyuiy.ui",'y'));//字符串截取，，从字符最后出现的位置+1开始System.out.println(org.springframework.util.StringUtils.capitalize("yuiyuiy"));//首字母大写System.out.println(org.springframework.util.StringUtils.uncapitalize("YuIyuiy"));//首字母小写System.out.println(org.springframework.util.StringUtils.uncapitalize("YuIyuiy"));//首字母小写 changeFirstCharacterCase(String str, boolean capitalize),capitalize为true则为大写System.out.println(org.springframework.util.StringUtils.getFilename("D://Java"));//截取最后一个\出现的未知+1的字符串System.out.println(org.springframework.util.StringUtils.getFilenameExtension("D:/Java.fdsdf"));//获取路劲下的后缀名System.out.println(org.springframework.util.StringUtils.stripFilenameExtension("D:/Java.fdsdf"));//获取路劲下的后缀名之前的部分

org.apache.commons.codec.binary部分

String string1 = "你好";        String string2 = "";        System.out.println(StringUtils.equals(string1, string2));//判断equals        //字节        System.out.println(StringUtils.getBytesUtf8(string1));//提供了获取多种字符 类型的字节方法        byte[] bb = StringUtils.getBytesUtf8(string1);        System.out.println(StringUtils.newString(bb, "UTF-8"));//字节转换        System.out.println(StringUtils.newStringUtf8(bb));