formatfilesize.java

java web模拟的简单的一个网络硬盘

package com.dark.nethd.tags;

import java.text.Format;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;

import org.apache.struts.taglib.TagUtils;

public class FormatFileSize extends TagSupport {
	private String name = null;

	private String scope = null;

	private String property = null;

	private String format = "KB";

	public String getFormat() {
		return format;
	}

	public void setFormat(String format) {
		this.format = format;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getProperty() {
		return property;
	}

	public void setProperty(String property) {
		this.property = property;
	}

	public String getScope() {
		return scope;
	}

	public void setScope(String scope) {
		this.scope = scope;
	}

	public int doEndTag() throws JspException {
		Object value = TagUtils.getInstance().lookup(pageContext, name,
				property, scope);
		if (value == null) {
			return (SKIP_BODY); // Nothing to output
		}
		// Convert value to the String with some formatting
		Integer filesize = 0;
		if (format.equals("MB")) {
			filesize = Integer.parseInt(value.toString()) / 1024 / 1024;
		}
		if (format.equals("KB")) {
			filesize = Integer.parseInt(value.toString()) / 1024;
		}
		String output = filesize + format;
		TagUtils.getInstance().write(pageContext, output);
		return (SKIP_BODY);
	}

	public void release() {
		super.release();
		name = null;
		property = null;
		scope = null;
		format = "KB";
	}
}