Jstl fn:substring () function code and usage-Returns a subset of the start and end indexes of a specified string.

2. uri="http://java.sun.com/jsp/jstl/functions" prefix="FN" %>
4. The above URI depends on your actual situation.
8. ${fn:substring ("The string you want to intercept"), Beginindex,endindex}
14. User reply: Can intercept, with the FN function:
18. <%@ taglib prefix="FN" uri="Http://java.sun.com/jsp/jstl/functions" %>
22. The following is a list of the methods that are in Jstl and their descriptions
26. Function Name Function Description Use example
28. Fn:contains determines whether a string contains another string <c:if Test="${fn:contains (name, searchstring)} ">
30. Fn:containsignorecase determines whether a string contains another string (case-insensitive) <c:ifTest="${ Fn:containsignorecase (name, SearchString)} ">
32. Fn:endswith determines whether the string ends with a different string <c:if Test="${fn:endswith (filename,". TXT ")}">
34. Fn:escapexml convert some characters into XML representations, such as the < character should be converted to < ${fn:escapexml (Param:info)}
36. The position of the fn:indexof substring in the parent string ${fn:indexof (name, "-")}
38. Fn:join union the data in the array into a new string and uses the specified character format to open ${fn:join (array, ";")}
40. Fn:length gets the length of the string, or the size of the array ${fn:length (shoppingcart.products)}
42. Fn:replace replaces the character specified in the string ${fn:replace (text, "-", "?")}
44. Fn:split the string according to the specified word segmentation ${fn:split (customernames, ";")}
46. Fn:startswith determines whether the string starts with a substring <c:if Test= "${fn:startswith (product.id," ")}">
48. Fn:substring Get substring ${fn:substring (zip, 6,-1)}
50. Fn:substringafter gets the substring starting at the location of a character
52. ${fn:substringafter (Zip, "-")}
54. Fn:substringbefore Gets the substring ${fn:substringbefore (zip, "-") from the beginning to the location of a character}
56. Fn:tolowercase converted to lowercase ${fn.tolowercase (product.name)}
58. Fn:touppercase to uppercase characters ${FN. Uppercase (Product.name)}
60. Fn:trim Remove the space before and after the string ${fn.trim (name)}
66. Function
68. Describe
72. Fn:contains (string, substring)
74. Returns true if the parameter string contains the parameter substring.
78. Fn:containsignorecase (string, substring)
80. Returns true if the parameter string contains the parameter substring (ignoring case)
84. Fn:endswith (string, suffix)
86. Returns true if the argument string ends with the argument suffix
90. Fn:escapexml (String)
92. Convert XML (and HTML) of extraordinary significance to the corresponding XML character entity code, and return
96. Fn:indexof (string, substring)
98. Returns the position of the first occurrence of the parameter substring in the parameter string
102. Fn:join (array, separator)
104. Separator a given array array together with the given spacer, forming a new string and returning it.
108. Fn:length (item)
110. Returns the number of elements contained in the parameter item. The parameter item type is an array, a collection, or a string. If it is of type string, the return value is the number of characters in string.
114. Fn:replace (String, before, after)
116. Returns a String object. Replaces all occurrences of a parameter before string in a parameter string with a parameter after string, and returns the replaced result
120. Fn:split (string, separator)
122. Returns an array that splits the argument string with the parameter separator, and each part of the split is an element of the array
126. Fn:startswith (string, prefix)
128. If the argument string starts with the argument prefix, returns true
132. Fn:substring (string, begin, end)
134. Returns the string part of the argument, starting with the argument begin to the end position of the argument, including the character of the end position
138. Fn:substringafter (string, substring)
140. Returns the part of the string that follows the parameter substring in the argument string
144. Fn:substringbefore (string, substring)
146. Returns the part of the string that precedes the argument substring in the argument string
150. Fn:tolowercase (String)
152. Converts all characters of the argument string to lowercase and returns it
156. Fn:touppercase (String)
158. Converts all characters of the argument string to uppercase and returns it
162. Fn:trim (String)

1. Strips the argument string from the end of the space and returns it

Examples of Use

<%@ taglib uri= "Http://java.sun.com/jsp/jstl/core" prefix= "C"%><%@ taglib uri= "http://java.sun.com/jsp/ Jstl/functions "                                                   prefix=" FN "%>

Jstl fn:substring () function code and usage-Returns a subset of the start and end indexes of a specified string.