Jcaptcha-all-1.0-RC6.jar
<bean id="captchaService" class="com.octo.captcha.service.multitype.GenericManageableCaptchaService">
<constructor-arg index="0" ref="imageEngine" />
<constructor-arg type="int" index="1" value="180" />
<constructor-arg type="int" index="2" value="100000" />
</bean>
<bean id="imageEngine" class="com.octo.captcha.engine.GenericCaptchaEngine">
<constructor-arg index="0">
<list>
<ref bean="captchaFactory" />
</list>
</constructor-arg>
</bean>
<bean id="captchaFactory" class="com.octo.captcha.image.gimpy.GimpyFactory">
<constructor-arg>
<ref bean="wordgen" />
</constructor-arg>
<constructor-arg>
<ref bean="wordtoimage" />
</constructor-arg>
</bean>
<bean id="wordgen" class="com.octo.captcha.component.word.wordgenerator.RandomWordGenerator">
<!--可选字符-->
<constructor-arg>
<value>
0123456789abcdefghijklmnopqrstuvwxyz
</value>
</constructor-arg>
</bean>
<bean id="wordtoimage" class="com.octo.captcha.component.image.wordtoimage.ComposedWordToImage">
<constructor-arg index="0">
<ref bean="fontGenRandom" />
</constructor-arg>
<constructor-arg index="1">
<ref bean="backGenUni" />
</constructor-arg>
<constructor-arg index="2">
<ref bean="decoratedPaster" />
</constructor-arg>
</bean>
<bean id="fontGenRandom" class="com.octo.captcha.component.image.fontgenerator.RandomFontGenerator">
<!--最小字体-->
<constructor-arg index="0">
<value>20</value>
</constructor-arg>
<!--最大字体-->
<constructor-arg index="1">
<value>20</value>
</constructor-arg>
<constructor-arg index="2">
<list>
<bean class="java.awt.Font">
<constructor-arg index="0">
<value>Arial</value>
</constructor-arg>
<constructor-arg index="1">
<value>0</value>
</constructor-arg>
<constructor-arg index="2">
<value>20</value>
</constructor-arg>
</bean>
</list>
</constructor-arg>
</bean>
<bean id="backGenUni" class="com.octo.captcha.component.image.backgroundgenerator.UniColorBackgroundGenerator">
<!--背景宽度-->
<constructor-arg index="0">
<value>80</value>
</constructor-arg>
<!--背景高度-->
<constructor-arg index="1">
<value>32</value>
</constructor-arg>
</bean>
<!--textpaster有多种paster方式,如LineRandomTextPaster-->
<bean id="decoratedPaster" class="com.octo.captcha.component.image.textpaster.DecoratedRandomTextPaster">
<!--最大字符长度-->
<constructor-arg type="java.lang.Integer" index="0">
<value>4</value>
</constructor-arg>
<!--最小字符长度-->
<constructor-arg type="java.lang.Integer" index="1">
<value>4</value>
</constructor-arg>
<!--文本颜色-->
<constructor-arg index="2">
<ref bean="colorGen" />
</constructor-arg>
<!--文本混淆-->
<constructor-arg index="3">
<list>
<!--<ref bean="baffleDecorator"/>-->
</list>
</constructor-arg>
</bean>
<bean id="baffleDecorator" class="com.octo.captcha.component.image.textpaster.textdecorator.BaffleTextDecorator">
<constructor-arg type="java.lang.Integer" index="0">
<value>1</value>
</constructor-arg>
<constructor-arg type="java.awt.Color" index="1">
<ref bean="colorWrite" />
</constructor-arg>
</bean>
<bean id="colorGen" class="com.octo.captcha.component.image.color.SingleColorGenerator">
<constructor-arg type="java.awt.Color" index="0">
<ref bean="colorDimGrey" />
</constructor-arg>
</bean>
<bean id="colorWrite" class="java.awt.Color">
<constructor-arg type="int" index="0">
<value>255</value>
</constructor-arg>
<constructor-arg type="int" index="1">
<value>255</value>
</constructor-arg>
<constructor-arg type="int" index="2">
<value>255</value>
</constructor-arg>
</bean>
<bean id="colorDimGrey" class="java.awt.Color">
<constructor-arg type="int" index="0">
<value>105</value>
</constructor-arg>
<constructor-arg type="int" index="1">
<value>105</value>
</constructor-arg>
<constructor-arg type="int" index="2">
<value>105</value>
</constructor-arg>
</bean>
</beans>
String captchaId = request.getSession().getId();
BufferedImage challenge = imageCaptchaService.getImageChallengeForID(captchaId, request.getLocale());
ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();
ImageIO.write(challenge, "jpeg", jpegOutputStream);
byte[] captchaChallengeAsJpeg = jpegOutputStream.toByteArray();
os.flush();
os.close();
String captchaImage = new String(Base64.encodeBase64(captchaChallengeAsJpeg), "UTF-8");
Boolean isResponseCorrect = imageCaptchaService.validateResponseForID(request.getSession().getId(), captcha);