CODEWITHSUNDEEP
javaexception
marioosh
marioosh

Reputation: 28556

SAXParseException localized

I have service that parse XML and produce report with list of parser errors (SAXParseException exactly) using exception.getMessage() (exception.getLocalizedMessage() return the same) that can be read and understand by humans. How to localize this exception messages in a language other than English ?

Upvotes: 1

Views: 2238

Answers (3)

Denis Orlov
Denis Orlov

Reputation: 127

1.Use xercesImpl dependency

<dependency>
   <groupId>xerces</groupId>
   <artifactId>xercesImpl</artifactId>
   <version>2.12.2</version>
</dependency>

see https://mvnrepository.com/artifact/xerces/xercesImpl

2.Translate this file https://github.com/JetBrains/jdk8u_jaxp/blob/master/src/com/sun/org/apache/xerces/internal/impl/msg/XMLSchemaMessages.properties

name it like XMLSchemaMessages_<lower_case_language_code>.properties and put into directory src/main/resources/org/apache/xerces/impl/msg, according to path in the org.apache.xerces.impl.xs.XSMessageFormatter

3.Create custom XSMessageFormatterLocale, extends org.apache.xerces.impl.xs.XSMessageFormatter:

/** Use file XMLSchemaMessages_<lower_case_language_code>.properties,
 ex: put file src/main/resources/org/apache/xerces/impl/msg/XMLSchemaMessages_ru.properties for "ru-RU"

 final Validator validator = schema.newValidator();
 // https://svn.apache.org/repos/asf/xerces/site/trunk/production/xerces2-j/javadocs/xerces2/org/apache/xerces/impl/XMLErrorReporter.html
 XMLErrorReporter property = (XMLErrorReporter) validator.getProperty("http://apache.org/xml/properties/internal/error-reporter");
 property.putMessageFormatter(XSMessageFormatterLocale.SCHEMA_DOMAIN, new XSMessageFormatterLocale(Locale.forLanguageTag("ru-RU")));
 */
public class XSMessageFormatterLocale extends XSMessageFormatter { // org.apache.xerces.impl.xs.XSMessageFormatter

    private final Locale locale;

    public XSMessageFormatterLocale(Locale locale) {
        this.locale = locale;
    }

    public String formatMessage(Locale locale, String key, Object[] arguments)throws MissingResourceException {
        return super.formatMessage(this.locale, key, arguments);
    }
}
  1. put custom MessageFormatter into your schema.newValidator

Profit!

final Validator validator = schema.newValidator();
XMLErrorReporter property = (XMLErrorReporter) validator.getProperty("http://apache.org/xml/properties/internal/error-reporter");
property.putMessageFormatter(XSMessageFormatterLocale.SCHEMA_DOMAIN, new XSMessageFormatterLocale(Locale.forLanguageTag("ru-RU")));

validator.validate(...);

Upvotes: 0

marioosh
marioosh

Reputation: 28556

I've found solution. First need to get XMLSchemaMessages.properties from Apache Xerces. I downloaded Xerces-J-src.2.11.0.tar.gz from http://xerces.apache.org/, unzip and get this file from location: ...\src\org\apache\xerces\impl\msg.

Now rename this file to XMLSchemaMessages_pl.properties or localization You need and place in classpath. I have project in Maven so i put this file into: src\main\resources\com\sun\org\apache\xerces\internal\impl\msg.

And that's all. Changes to this file will be visible in exception messages.

Upvotes: 4

Sajan Chandran
Sajan Chandran

Reputation: 11487

As per the java doc, you need to extends SAXParseException and override getLocalizedMessage, the default implementation returns the same as getMessage.

Edit: You can have seperate property file for each language and in each you can have code and local message. When you raise SAXParseException, based on the locale and some code, returns the appropriate message.

MySAXParseException ex = new MySAXParseException(<code>);

Upvotes: 2

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