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IDValidator

//初始化一个实例
IDValidator validator = new IDValidator();

//验证身份证是否有效
validator.isValid("152103198909218022")

//分析详细信息
validator.getInfo(id15)

//生成18位身份证号
validator.makeID(false)

//生成15位身份证号
validator.makeID(true)

参考:http://blog.jdk5.com/zh/java-chinese-personal-id-card-validation/

#image - 图片处理工具

String str = ImageUtilsTest.class.getResource("/org.jpg").getPath();
File f = new File(str);		//原图片
str = ImageUtilsTest.class.getResource("/images/watermarkater.png").getPath();	//水印
BufferedImage watermarkImage = ImageIO.read(new File(str));
Watermark watermark = new Watermark(Positions.CENTER, watermarkImage, 0.6f);	//水印居中,透明度0.6
Watermark watermark2 = new Watermark(Positions.BOTTOM_CENTER, watermarkImage, 0.6f);
ArrayList<Watermark> list = new ArrayList<Watermark>();
list.add(watermark);
list.add(watermark2);
			
ImageUtils.fromFile(f)		//设置原图片
	//.width(200)			//设置生成图片的宽度,高度将以原图片的高度等比例伸缩
	//.height(200)			//设置生成图片的高度,宽度将以原图片的宽度等比例伸缩
	//.scale(1)				//设置生成图片的伸缩比例
	//.size(200, 22)		//设置生成图片的宽度和高度
	.rotate(34)				//设置原图片的旋转角度
	.watermark(watermark)	//设置水印
	//.watermarkArray(list)	//设置多个水印
	.bgcolor(Color.BLUE)	//设置背景颜色,如果为null,表示不添加背景颜色,如果图片为png,为透明颜色
	.quality(0.6f)			//设置压缩比例,默认为0.75
	.toFile(new File("d:\\image\\test.jpg"));	//生成图片的路径

参考:http://blog.jdk5.com/zh/java-adding-a-watermark-over-an-image-programmatically/

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