STRUTS2 implement custom converters and global type converters

One of the fields in the action is birthday is the date type, and when we pass the value it must be written in 1999-01-01 it will be converted automatically, but there are times when the requirement is written as 19990101 so that no automatic type conversion is done by default. This allows us to write a custom type converter to implement the transformation requirements.

STRUTS2 has two types of converters:

Local: Working on an Action transformation type

To customize the type converter first:

public class Datetypeconverter extends Defaulttypeconverter {
	@Override the public
	Object Convertvalue (map< String, object> context, Object value, Class totype) {
		SimpleDateFormat DateFormat = new SimpleDateFormat ("YYYYMMD D ");
		try { 
			if (ToType = = Date.class) {//when the string is converted to the Date type
				string[] params = (string[)) value;// Request.getparametervalues () return 
				dateformat.parse (params[0]);
			else if (ToType = = String.class) {//when date is converted to a string,
				date date = (date) value;
				return Dateformat.format (date);
			}
		catch (ParseException e) {} return
		null;
	}
}

To register:

Create Helloworldaction-conversion.properties file helloworldaction is the action to be registered.

The content of the file is the content converter to which the property in the action is to be typed and only to:

Birthday=cn.test.type.converter.datetypeconverter

Global: Works on all action conversion types

Create a xwork-conversion.properties file under SRC

Content is: Java.util.date=cn.test.type.converter.datetypeconverter