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web dynamic validation code generator 动态web校验码图片生成

xvcode 최신버젼 다운로드

최종 버전 다운로드 (.zip)

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# xvcode (x-validation code)

project description:

this project only for web validation code generating. we provide this tool cause there no security enough validation-code-image generator.
this tool provide 4 kind of valid-code image generators. as follows:

this project refer the [gifencoder][1]

**项目作用：**
主要用于生成web动态验证码图片。主要应用场景为web 页面上需要用户输入验证码才能进行操作的地方。
**开发原因：**
目前网络广为流传的代码所生成的验证码图片太简单，并易于破解。所以我们自己开发了一个简单的验证码生成包，增加了背景的干扰性。
**features：**
> - 提供1中png格式的图片生成器，3种gif格式图片生成器。
> - 随机码由生成器自身生成。
> - 可一定程度自定义背景干扰图形参数

**感谢：**
该项目用于生成gif图片编码器使用了 [gifencoder][1] 项目

*图片示例 mapping from generator to image style*

PngVCGenerator:
![image](https://github.com/botaruibo/xvcode/blob/master/docs/imgs/1.png)

GifVCGenerator:
![image](https://github.com/botaruibo/xvcode/blob/master/docs/imgs/1.gif)

GifVCGenerator2:
![image](https://github.com/botaruibo/xvcode/blob/master/docs/imgs/2.gif)

GifVCGenerator3:
![image](https://github.com/botaruibo/xvcode/blob/master/docs/imgs/3.gif)

[1]: https://github.com/cloader/gifencoder

*国内如果不能查看github中readme的图片，可参考https://blog.51cto.com/14234228/2492600 更新自己本地的github dns*
## Getting Started

### For Java Developers

###### Add Dependency（maven）

add dependency to your pom.xml：

```
<dependency>
	<groupId>com.github.botaruibo</groupId>
	<artifactId>xvcode</artifactId>
	<version>1.0</version>
</dependency>
```
####### Code Examples
```
package test

import java.io.FileOutputStream;
import java.io.IOException;
import com.github.botaruibo.xvcode.generator.Generator;
import com.github.botaruibo.xvcode.generator.Gif2VCGenerator;
import com.github.botaruibo.xvcode.generator.Gif3VCGenerator;
import com.github.botaruibo.xvcode.generator.GifVCGenerator;
import com.github.botaruibo.xvcode.generator.PngVCGenerator;

class Test {
//生成验证码图片到本地磁盘 draw image and save to disk
public void main(String args[]) throws IOException　{
		String path = ".";//图片存储路径 path for image save 
		Integer height = 40;//image 高度。  image height. count as pixel
		Integer width = 200;//image 宽度。 image width. count as pixel
		Integer count = 5;	// validation code length.
		String validCode = null; //验证码
		Generator generator = new PngVCGenerator(width, height, count);
        generator.write2out(new FileOutputStream(path + "/1.png")).close();
        validCode = generator.text(); //get the validation code as 'String'
        System.out.println(validCode);
        generator = new GifVCGenerator(width, height, count);//   gif
        generator.write2out(new FileOutputStream(path + "/1.gif")).close();
        validCode = generator.text();
        System.out.println(validCode);
        generator = new Gif2VCGenerator(width, height, count);//   gif
        generator.write2out(new FileOutputStream(path + "/2.gif")).close();
        validCode = generator.text();
        System.out.println(validCode);
        generator = new Gif3VCGenerator(width, height, count);//   gif
        generator.write2out(new FileOutputStream(path + "/3.gif")).close();
        validCode = generator.text();
        System.out.println(validCode);
}
}
```

the *generator.write2out()* method proved the ability to write the image binary to any OutputStream object. this especially convenience for servlet request

如果要将验证码图片以流的方式穿到前端，可以直接使用*generator.write2out()*方法

### Use Under Command(require ${JAVA_HOME} set)

use the *xvcode-1.0-SNAPSHOT-cl.jar* file to generate valid-code image directly to disk. command like:

可以使用jar包直接生成本地图片。命令：
```
java -jar xvcode-1.0-SNAPSHOT-cl
```
usage :

支持参数如下：
``` 
usage:
	-p	dir path for the image, default generate in current dir
	-h	image height, between 50 to 500, default 200
	-w	image width, between 30 to 300, default 40
	-cl	validation code length, between 2 to 10, default 5
	
```

example:

例如：
```
java -jar xvcode-1.0-SNAPSHOT-cl -p test/ -h 300 -w 60 -cl 7
```

xvcode

xvcode 최신버젼 다운로드

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