字符串

  • #strings: 用于String对象的实用方法。
  1. /*
  2.  * ======================================================================
  3.  * See javadoc API for class org.thymeleaf.expression.Strings
  4.  * ======================================================================
  5.  */
  7. /*
  8.  * Null-safe toString()
  9.  */
  10. ${#strings.toString(obj)}                           // also array*, list* and set*
  12. /*
  13.  * Check whether a String is empty (or null). Performs a trim() operation before check
  14.  * Also works with arrays, lists or sets
  15.  */
  16. ${#strings.isEmpty(name)}
  17. ${#strings.arrayIsEmpty(nameArr)}
  18. ${#strings.listIsEmpty(nameList)}
  19. ${#strings.setIsEmpty(nameSet)}
  21. /*
  22.  * Perform an 'isEmpty()' check on a string and return it if false, defaulting to
  23.  * another specified string if true.
  24.  * Also works with arrays, lists or sets
  25.  */
  26. ${#strings.defaultString(text,default)}
  27. ${#strings.arrayDefaultString(textArr,default)}
  28. ${#strings.listDefaultString(textList,default)}
  29. ${#strings.setDefaultString(textSet,default)}
  31. /*
  32.  * Check whether a fragment is contained in a String
  33.  * Also works with arrays, lists or sets
  34.  */
  35. ${#strings.contains(name,'ez')}                     // also array*, list* and set*
  36. ${#strings.containsIgnoreCase(name,'ez')}           // also array*, list* and set*
  38. /*
  39.  * Check whether a String starts or ends with a fragment
  40.  * Also works with arrays, lists or sets
  41.  */
  42. ${#strings.startsWith(name,'Don')}                  // also array*, list* and set*
  43. ${#strings.endsWith(name,endingFragment)}           // also array*, list* and set*
  45. /*
  46.  * Substring-related operations
  47.  * Also works with arrays, lists or sets
  48.  */
  49. ${#strings.indexOf(name,frag)}                      // also array*, list* and set*
  50. ${#strings.substring(name,3,5)}                     // also array*, list* and set*
  51. ${#strings.substringAfter(name,prefix)}             // also array*, list* and set*
  52. ${#strings.substringBefore(name,suffix)}            // also array*, list* and set*
  53. ${#strings.replace(name,'las','ler')}               // also array*, list* and set*
  55. /*
  56.  * Append and prepend
  57.  * Also works with arrays, lists or sets
  58.  */
  59. ${#strings.prepend(str,prefix)}                     // also array*, list* and set*
  60. ${#strings.append(str,suffix)}                      // also array*, list* and set*
  62. /*
  63.  * Change case
  64.  * Also works with arrays, lists or sets
  65.  */
  66. ${#strings.toUpperCase(name)}                       // also array*, list* and set*
  67. ${#strings.toLowerCase(name)}                       // also array*, list* and set*
  69. /*
  70.  * Split and join
  71.  */
  72. ${#strings.arrayJoin(namesArray,',')}
  73. ${#strings.listJoin(namesList,',')}
  74. ${#strings.setJoin(namesSet,',')}
  75. ${#strings.arraySplit(namesStr,',')}                // returns String[]
  76. ${#strings.listSplit(namesStr,',')}                 // returns List<String>
  77. ${#strings.setSplit(namesStr,',')}                  // returns Set<String>
  79. /*
  80.  * Trim
  81.  * Also works with arrays, lists or sets
  82.  */
  83. ${#strings.trim(str)}                               // also array*, list* and set*
  85. /*
  86.  * Compute length
  87.  * Also works with arrays, lists or sets
  88.  */
  89. ${#strings.length(str)}                             // also array*, list* and set*
  91. /*
  92.  * Abbreviate text making it have a maximum size of n. If text is bigger, it
  93.  * will be clipped and finished in "..."
  94.  * Also works with arrays, lists or sets
  95.  */
  96. ${#strings.abbreviate(str,10)}                      // also array*, list* and set*
  98. /*
  99.  * Convert the first character to upper-case (and vice-versa)
  100.  */
  101. ${#strings.capitalize(str)}                         // also array*, list* and set*
  102. ${#strings.unCapitalize(str)}                       // also array*, list* and set*
  104. /*
  105.  * Convert the first character of every word to upper-case
  106.  */
  107. ${#strings.capitalizeWords(str)}                    // also array*, list* and set*
  108. ${#strings.capitalizeWords(str,delimiters)}         // also array*, list* and set*
  110. /*
  111.  * Escape the string
  112.  */
  113. ${#strings.escapeXml(str)}                          // also array*, list* and set*
  114. ${#strings.escapeJava(str)}                         // also array*, list* and set*
  115. ${#strings.escapeJavaScript(str)}                   // also array*, list* and set*
  116. ${#strings.unescapeJava(str)}                       // also array*, list* and set*
  117. ${#strings.unescapeJavaScript(str)}                 // also array*, list* and set*
  119. /*
  120.  * Null-safe comparison and concatenation
  121.  */
  122. ${#strings.equals(first, second)}
  123. ${#strings.equalsIgnoreCase(first, second)}
  124. ${#strings.concat(values...)}
  125. ${#strings.concatReplaceNulls(nullValue, values...)}
  127. /*
  128.  * Random
  129.  */
  130. ${#strings.randomAlphanumeric(count)}