Java随机生成中文汉字

Java随机生成中文汉字

/**

* 原理是从汉字区位码找到汉字。在汉字区位码中分高位与底位， 且其中简体又有繁体。位数越前生成的汉字繁体的机率越大。

* 所以在本例中高位从171取，底位从161取， 去掉大部分的繁体和生僻字。但仍然会有！！

*

*/

@Test

public void create() throws Exception {

String str = null;

int hightPos, lowPos; // 定义高低位

Random random = new Random();

hightPos = (176 + Math.abs(random.nextInt(39)));//获取高位值

lowPos = (161 + Math.abs(random.nextInt(93)));//获取低位值

byte[] b = new byte[2];

b[0] = (new Integer(hightPos).byteValue());

b[1] = (new Integer(lowPos).byteValue());

str = new String(b, "GBk");//转成中文

System.err.println(str);

}

/**

* 旋转和缩放文字

* 必须要使用Graphics2d类

*/

public void trans(HttpServletRequest req, HttpServletResponse resp) throws Exception{

int width=88;

int height=22;

BufferedImage img = new BufferedImage(width, height,BufferedImage.TYPE_INT_RGB);

Graphics g = img.getGraphics();

Graphics2D g2d = (Graphics2D) g;

g2d.setFont(new Font("黑体",Font.BOLD,17));

Random r = new Random();

for(int i=0;i<4;i++){

String str = ""+r.nextInt(10);

AffineTransform aff = new AffineTransform();

aff.rotate(Math.random(),i*18,height-5);

aff.scale(0.6+Math.random(), 0.6+Math.random());

g2d.setTransform(aff);

g2d.drawString(str,i*18,height-5);

System.err.println(">:"+str);

}

g2d.dispose();

ImageIO.write(img, "JPEG",resp.getOutputStream());

}