Java8中字符串處理庫strman-java的使用示例

介紹

Strmen-java是一個字符串處理工具，你可以通過maven將它引入到項目中。 Strmen-java為我們提供了一個非常完整且強大的解決方案，使用它可以解決幾乎所有字符串處理場景。

使用

為了能在你的Java應用程序中使用strman-java，可以把這個包下載下來添加到你項目的lib目錄中，如果使用的是Maven做項目管理，則只需要在你的pom.xml中加入如下依賴即可：

 <dependency> <groupId>com.shekhargulati</groupId> <artifactId>strman</artifactId> <version>0.2.0</version> <type>jar</type></dependency>

如果是Gradle用戶則在build.gradle文件中添加如下代碼：

 compile(group: 'com.shekhargulati', name: 'strman', version: '0.2.0', ext: 'jar'){ transitive=true}

示例

下面便是Strman-java的使用示例：

 import strman.Strman; import java.util.Arrays; import java.util.Optional;/** * strman-java包的測試使用類* Created by blinkfox on 16/7/17. */public class StrmanTest { public static void main(String[] args) { // append 在一個字符串後追加任意個數的字符串String s1 = Strman.append("f", "o", "o", "b", "a", "r"); System.out.println("append:" + s1); // result => "foobar" // prepend 在一個字符串前追加任意個數的字符串String s1pre = Strman.prepend("r", "f", "o", "o", "b", "a"); System.out.println("prepend:" + s1pre); // result => "foobar" // appendArray 在一個字符串後先後追加一個字符串數組中的元素String s2 = Strman.appendArray("f", new String[]{"o", "o", "b", "a", "r"}); System.out.println("append:" + s2); // result => "foobar" // at 根據字符串的索引獲取到對應的字符。如果索引是負數,則逆向獲取,超出則拋出異常Optional<String> s3 = Strman.at("foobar", 3); System.out.println("at:" + s3.get()); // result => "b" // between 得到一個字符串中,開始字符串和結束字符串之間的字符串的數組String[] s4 = Strman.between("[abc], [def]", "[", "]"); System.out.println("between:" + Arrays.toString(s4)); // result => "[abc, def]" // chars 得到一個字符串中所有字符構成的字符串數組String[] s5 = Strman.chars("title"); System.out.println("chars:" + Arrays.toString(s5)); // result => "[t, i, t, l, e]" // collapseWhitespace 替換掉連續的多個空格為一個空格String s6 = Strman.collapseWhitespace("foo bar"); System.out.println("chars:" + s6); // result => "foo bar" // contains 判斷一個字符串是否包含另外一個字符串,第三個參數,表示字符串大小寫是否敏感boolean s7 = Strman.contains("foo bar", "foo"); boolean s8 = Strman.contains("foo bar", "FOO", false); System.out.println("contains:" + s7 + ", " + s8); // result => "true, true" // containsAll 判斷一個字符串是否包含某字符串數組中的所有元素boolean s9 = Strman.containsAll("foo bar", new String[]{"foo", "bar"}); boolean s10 = Strman.containsAll("foo bar", new String[]{"FOO", "bar"}, false); System.out.println("containsAll:" + s9 + ", " + s10); // result => "true, true" // containsAny 判斷一個字符串是否包含某字符串數組中的任意一個元素boolean s11 = Strman.containsAny("foo bar", new String[]{"FOO", "BAR", "Test"}, false); System.out.println("containsAny:" + s11); // result => "true" // countSubstr 判斷一個字符串包含某字符串的個數long s12 = Strman.countSubstr("aaaAAAaaa", "aaa"); long s13 = Strman.countSubstr("aaaAAAaaa", "aaa", false, false); System.out.println("countSubstr:" + s12 + ", " + s13); // result => "2, 3" // endsWith 判斷一個字符串是否以某個字符串結尾boolean s14 = Strman.endsWith("foo bar", "bar"); boolean s15 = Strman.endsWith("foo bar", "BAR", false); System.out.println("endsWith:" + s14 + ", " + s15); // result => "true, true" // ensureLeft 確保一個字符串以某個字符串開頭,如果不是,則在前面追加該字符串,並將字符串結果返回String s16 = Strman.ensureLeft("foobar", "foo"); String s17 = Strman.ensureLeft("bar", "foo"); String s18 = Strman.ensureLeft("foobar", "FOO", false); System.out.println("ensureLeft:" + s16 + ", " + s17 + ", " + s18); // result => "foobar, foobar, foobar" // ensureRight 確保一個字符串以某個字符串開頭,如果不是,則在前面追加該字符串,並將字符串結果返回String s16r = Strman.ensureRight("foobar", "bar"); String s17r = Strman.ensureRight("foo", "bar"); String s18r = Strman.ensureRight("fooBAR", "bar", false); System.out.println("ensureRight:" + s16r + ", " + s17r + ", " + s18r); // result => "foobar, foobar, fooBAR" // base64Encode 將字符串轉成Base64編碼的字符串String s19 = Strman.base64Encode("strman"); System.out.println("base64Encode:" + s19); // result => "c3RybWFu" // binDecode 將二進制編碼（16位）轉成字符串字符String s20 = Strman.binDecode("0000000001000001"); System.out.println("binDecode:" + s20); // result => "A" // binEncode 將字符串字符轉成二進制編碼（16位） String s21 = Strman.binEncode("A"); System.out.println("binEncode:" + s21); // result => "0000000001000001" // decDecode 將十進制編碼（5位）轉成字符串字符String s22 = Strman.decDecode("00065"); System.out.println("decDecode:" + s22); // result => "A" // decEncode 將字符串轉成十進制編碼（5位） String s23 = Strman.decEncode("A"); System.out.println("decEncode:" + s23); // result => "00065" // first 得到從字符串開始到索引n的字符串String s24 = Strman.first("foobar", 3); System.out.println("first:" + s24); // result => "foo" // last 得到從字符串結尾倒數索引n的字符串String s24l = Strman.last("foobar", 3); System.out.println("last:" + s24l); // result => "bar" // head 得到字符串的第一個字符String s25 = Strman.head("foobar"); System.out.println("head:" + s25); // result => "f" // hexDecode 將字符串字符轉成十六進制編碼（4位） String s26 = Strman.hexDecode("0041"); System.out.println("hexDecode:" + s26); // result => "A" // hexEncode 將十六進制編碼（4位）轉成字符串字符String s27 = Strman.hexEncode("A"); System.out.println("hexEncode:" + s27); // result => "0041" // inequal 測試兩個字符串是否相等boolean s28 = Strman.inequal("a", "b"); System.out.println("inequal:" + s28); // result => "true" // insert 將子字符串插入到字符串某索引位置處String s29 = Strman.insert("fbar", "oo", 1); System.out.println("insert:" + s29); // result => "foobar" // leftPad 將字符串從左補齊直到總長度為n為止String s30 = Strman.leftPad("1", "0", 5); System.out.println("leftPad:" + s30); // result => "00001" // rightPad 將字符串從右補齊直到總長度為n為止String s30r = Strman.rightPad("1", "0", 5); System.out.println("rightPad:" + s30r); // result => "10000" // lastIndexOf 此方法返回在指定值的最後一個發生的調用字符串對像中的索引，從偏移量中向後搜索int s31 = Strman.lastIndexOf("foobarfoobar", "F", false); System.out.println("lastIndexOf:" + s31); // result => "6" // leftTrim 移除字符串最左邊的所有空格String s32 = Strman.leftTrim(" strman "); System.out.println("leftTrim:" + s32); // result => "strman " // rightTrim 移除字符串最右邊的所有空格String s32r = Strman.rightTrim(" strman "); System.out.println("rightTrim:" + s32r); // result => " strman" // removeEmptyStrings 移除字符串數組中的空字符串String[] s33 = Strman.removeEmptyStrings(new String[]{"aa", "", " ", "bb", "cc", null}); System.out.println("removeEmptyStrings:" + Arrays.toString(s33)); // result => "[aa, bb, cc]" // removeLeft 得到去掉前綴（如果存在的話）後的新字符串String s34 = Strman.removeLeft("foobar", "foo"); System.out.println("removeLeft:" + s34); // result => "bar" // removeRight 得到去掉後綴（如果存在的話）後的新字符串String s34r = Strman.removeRight("foobar", "bar"); System.out.println("removeRight:" + s34r); // result => "foo" // removeNonWords 得到去掉不是字符的字符串String s35 = Strman.removeNonWords("foo&bar-"); System.out.println("removeNonWords:" + s35); // result => "foobar" // removeSpaces 移除所有空格String s36 = Strman.removeSpaces(" str man "); System.out.println("removeSpaces:" + s36); // result => " strman" // repeat 得到給定字符串和重複次數的新字符串String s37 = Strman.repeat("1", 3); System.out.println("repeat:" + s37); // result => "111" // reverse 得到反轉後的字符串String s38 = Strman.reverse("foobar"); System.out.println("reverse:" + s38); // result => "raboof" // safeTruncate 安全的截斷字符串，不切一個字的一半,它總是返回最後一個完整的單詞String s39 = Strman.safeTruncate("A Javascript string manipulation library.", 19, "..."); System.out.println("safeTruncate:" + s39); // result => "A Javascript..." // truncate 不太安全的截斷字符串String s40 = Strman.truncate("A Javascript string manipulation library.", 19, "..."); System.out.println("truncate:" + s40); // result => "A Javascript str..." // htmlDecode 將html字符反轉義String s41 = Strman.htmlDecode("Ш"); System.out.println("htmlDecode:" + s41); // result => "Ш" // htmlEncode 將html字符轉義String s42 = Strman.htmlEncode("Ш"); System.out.println("htmlEncode:" + s42); // result => "Ш" // shuffle 將給定字符串轉成隨機字符順序的字符串String s43 = Strman.shuffle("shekhar"); System.out.println("shuffle:" + s43); // result => "rhsheak" // slugify 將字符串分段(用"-"分段) String s44 = Strman.slugify("foo bar"); System.out.println("slugify:" + s44); // result => "foo-bar" // transliterate 刪除所有非有效字符,如:á => a String s45 = Strman.transliterate("fóõ bár"); System.out.println("transliterate:" + s45); // result => "foo bar" // surround 給定的“前綴”和“後綴”來包裹一個字符串String s46 = Strman.surround("div", "<", ">"); System.out.println("surround:" + s46); // result => "<div>" // tail 得到去掉第一個字符後的字符串String s47 = Strman.tail("foobar"); System.out.println("tail:" + s47); // result => "oobar" // toCamelCase 轉成駝峰式的字符串String s48 = Strman.toCamelCase("Camel Case"); String s48_2 = Strman.toCamelCase("camel-case"); System.out.println("tail:" + s48 + ", " + s48_2); // result => "camelCase, camelCase" // toStudlyCase 轉成Studly式的字符串String s49 = Strman.toStudlyCase("hello world"); System.out.println("toStudlyCase:" + s49); // result => "HelloWorld" // toDecamelize 轉成Decamelize式的字符串String s50 = Strman.toDecamelize("helloWorld", null); System.out.println("toDecamelize:" + s50); // result => "hello world" // toKebabCase 轉成Kebab式的字符串String s51 = Strman.toKebabCase("hello World"); System.out.println("toKebabCase:" + s51); // result => "hello-world" // toSnakeCase 轉成Snake式的字符串String s52 = Strman.toSnakeCase("hello world"); System.out.println("toSnakeCase:" + s52); // result => "hello_world" }}

總結

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