Jstl Tag Library (2) i18n format Tag Library

I18N Format Tag Library

The JSTL tag provides support for internationalization (i18n), which can display different languages depending on the client domain that makes the request. It also provides a way to format data and dates.

Implementing these features requires the I18N Format Tag library (i18n-capable formation tags liberary). The method for introducing the tag library is:

<%@ taglib prefix= "FMT" uri= "Http://java.sun.com/jsp/jstl/fmt"%>

The I18N Format Tag library provides 11 tags, which can be functionally divided into 3 categories as follows:

(1) Date format of the number. FormatNumber tags, formatdata tags, parsenumber tags, parsedate tags, timezone tags, settimezone tags.

(2) Read the message resource. Bundle label, message label, Setbundle label.

(3) Internationalization. SetLocale label, requestencoding label.

1 Digital Date format

Numeric date format Labels There are 6 of them, used to convert numbers or dates to the format you set.

1.1<frm:formatnumber/> Label

The label is displayed by changing the number to a different format based on a specific area.

"Syntax 1":

<frm:formatnumber value= "formatted data" [type= "Number|currency|percent"]  
 [pattern= "pattern"]  
 [currencycode= "Code"  
 [currencysymbol= "symbol"]  
 [groupingused= "True|false"]  
 [maxintergerdigits= "Maxdigits"]  
 [minintergerdigits= "Mindigits"]  
 [maxfractiondigits= "Maxdigits"]  
 [minfractiondigits= "Mindigits"]  
 [var= ' name ']  
 [Scope=page|request|session|application]  
/>

"Syntax 2":

<frm:formatnumber [type= "Number|currency|percent"]  
 [pattern= "pattern"]  
 [currencycode= "code"]  
 [currencysymbol= "symbol"]  
 [groupingused= "True|false"]  
 [maxintergerdigits= "Maxdigits"]  
 [minintergerdigits= "Mindigits"]  
 [maxfractiondigits= "Maxdigits"]  
 [minfractiondigits= "Mindigits"]  
 [var= ' name ']  
 [Scope=page|request|session|application]

> Formatted Data <frm:formatNumber>

Attribute Description <fmt:formatNumber> Label parameter description

Name: Description: EL: Type: must: Default value

Value: Data to format: Yes: String: Yes: none

Type: Specifies types (units, currencies, percentages, and so on): yes: No: Number

Pattern: Formatted data style: is: String: No: None

CurrencyCode: Currency Unit code: Yes: No: No

Cuttencysymbol: Currency symbol ($, ￥): is: String: No: None

Groupingused: Whether to group integer parts as (9,999): Yes: Boolean: Yes: True

Maxintergerdigits: Number of digits of the most pairs of integers: yes: int: no: None

Minintergerdigits: Minimum number of digits in the integer section: yes: int: no: None

Maxfractiondigits: The number of decimal parts to display most digits: yes: int: no: None

Minfractiondigits: Minimum number of decimal digits: yes: int: no: None

VAR: Storing formatted data: No: String: No: None

Scope:var's JSP range: No: String: No: Page

Type application of the types attribute

Type: Description: Example

Number: Digital format: 0.8

Currency: Local Currency: ￥0.80

Percent: Percent format: 80%