circletypeconverter.java

struts2使用实例代码,通过这些实例

package com.briup.converter;

import java.util.Map;

import org.apache.struts2.util.StrutsTypeConverter;

import com.opensymphony.xwork2.util.TypeConversionException;

public class CircleTypeConverter 
	extends StrutsTypeConverter{
	//将客户端提交的参数,转换成我们需要的类型
	@Override
	public Object convertFromString(
			Map context
			, String[] values
			, Class clazz) {
		String value=values[0];
		if(!value.startsWith("C:r")){
			throw new TypeConversionException();
		}
		int radiusIndex
				=value.indexOf("r")+1;
		int radius=Integer.parseInt(
				value.substring(radiusIndex));
		Circle circle=new Circle();
		circle.setRadius(radius);
		return circle;
	}
	//将Action的属性转换成字符串输出
	@Override
	public String convertToString(
			Map context, Object o) {
		Circle circle=(Circle)o;
		return "C:r"+circle.getRadius();
	}
}