Java string truncation Function

The function used to intercept strings in java is also a substring function. It is a bit like a string Intercept function in SQL. Next I will introduce you to the substring function in detail.

Substring

Public String substring (int beginIndex) returns a new String, which is a substring of this String. The substring starts with a character at the specified index until the end of the string.
For example:
"Unhappy". substring (2) returns "happy"
"Harbison". substring (3) returns "bison"
"Emptiness". substring (9) returns "" (an empty string)
Parameters:
BeginIndex-the index at the beginning (including ).
Return Value:
The specified substring.
Throw:
IndexOutOfBoundsException-If beginIndex is negative or greater than the length of this String object

Example

/*

* If the content is too long, the xml file may be too large and loading is too slow.

* From the seo perspective, all outputs are good for search engines, but the content is usually not too much.

* To prevent the css from being subject to space wrapping, the space is replaced by a regular expression. Therefore, the first 100 characters are truncated and the content displayed on the page is subject to css control.

 

* Zdz works

The Code is as follows:

Copy code

*/ // Str. trim (). replaceAll ("\ s + ",""); String contenttemp = rs. getString (contentName). trim (). replaceAll ("\ s + ",""); // NpfDebug. print (contenttemp. length ()); If (contenttemp. length ()> 100) {// intercept if the length is greater than 100 Contenttemp = contenttemp. substring (0,100 ); // NpfDebug. print ("contenttemp. length ()> 100? "+ Contenttemp. length () +" n "+ contentStr ); } Rsbody. append (beforCONTENT ); Rsbody. append (contenttemp ); Rsbody. append (endCONTENT );   Returns the real length of a string and the string function with a fixed length. Function getInterceptedStr (sSource, iLen) { If (sSource. replace (/[^ x00-xff]/g, "xx"). length <= iLen) { Return sSource; } Var ELIDED = "";   Var str = ""; Var l = 0; Var schar; For (var I = 0; schar = sSource. charAt (I); I ++) { Str + = schar; L ++ = (schar. match (/[^ x00-xff]/)! = Null? 2: 1 ); If (l> = iLen-ELIDED. length) { Break; } } Str + = ELIDED;   Return str;