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README
Apache-2.0
  1. 它是什么?

	这是一个非常简单的图片处理的插件,可快速集成在你的web应用中。基于http对图片进行缩略大小、质量压缩、旋转、转换扩展类型、添加水印等常用操作。
前台的图片尺寸发生变化的时候在前端修改url参数就好了,不用每次单独在后台去写一个尺寸常量,然后重新生成。
  1. 如何使用?

	预览缩略图
		服务器有一个abc.png的图片大小为1024x800,现在想要300x230的比例图
			http://host:port/upload/abc.png?imageView/s/300x230 这个链接就ok了
			这里imageView是图片预览,后面的1是按大小缩放,300x230是缩放后的大小
		我想取一个512x400的图,就是原图的一半
			http://host:port/upload/abc.png?imageView/p/50
			这里的2是按比例缩放,50是缩放为原图的50%
	下载缩略图
		只需把imageView改为imageDown即可
	查看图片信息
		http://host:port/upload/abc.png?imageInfo
	旋转图片
		http://host:port/upload/abc.png?imageView/r/180 这个链接就ok了
	添加水印
		待完成
	这里的参数顺序可以打乱的,imageView这个参数是请求显示还是下载(必须是第一个),后面的是处理图片参数(以键值对方式排列)
	…….
  1. 快速集成

	1. 在web.xml中加入即可
	<filter>
		<filter-name>image-plugin</filter-name>
		<filter-class>org.unique.plugin.image.ImageFilter</filter-class>
	</filter>
	
	<filter-mapping>
		<filter-name>image-plugin</filter-name>
		<url-pattern>/upload/*</url-pattern>
	</filter-mapping>
	
	然后,就没有然后了。。。
  1. 参数详解

图片预览
	http://xxxxx/abc.png?imageView/s/300x200/q/90
	http://xxxxx/abc.png?imageView/缩放类型/类型参数/压缩图片比例/比例参数
	缩放类型:1按大小缩放  2按比例缩放
	类型参数:类型为1后面跟widthxheight(当前这个不是强制压缩的会根据图片宽高比缩放),类型为2后面跟1-100的比例
	压缩图片比例:对图片的质量要求不高可以在这里处理(非必须)
	比例参数:1-100比例
图片下载参数和预览是一样的,imageView变成了imageDown,我没有考虑吧他变的很复杂做成可配置的,
因为这个插件只支持单机环境,分布式的话考虑别的架构,它非常的轻小。

图片旋转
	http://xxxxx/abc.png?imageView/r/180
	将图片abc旋转180度预览,参考范围(0-360)可以是负数
图片加水印

整体参数

r:旋转角度(单位 角度数字)
q:图片质量(单位%)
p:按比例缩放(单位%)
s:按大小缩放(单位px)	
c:裁剪(单位px)
f:转换图片格式(单位 图片格式)
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简介

一个java api式图片处理插件,可以下载代码直接植入你的web项目中使用。喜欢的点击Star,3q~ 展开 收起
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Apache-2.0
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