Spring+JCaptcha验证码使用示例

1，导入jcaptcha.jar包，这里用的是1.0版本

2，编写captcha-context.xml配置文件（非必须，可在spring配置文件中直接添加）：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean >
        <constructor-arg index="0" ref="imageEngine"/>
        <constructor-arg type="int" index="1" value="180"/>
        <constructor-arg type="int" index="2" value="100000"/>
        <constructor-arg type="int" index="3" value="75000"/>
    </bean>
    <bean >
        <constructor-arg index="0">
            <list>
                <ref bean="captchaFactory"/>
            </list>
        </constructor-arg>
    </bean>

    <bean >
        <constructor-arg>
            <ref bean="wordgen"/>
        </constructor-arg>
        <constructor-arg>
            <ref bean="wordtoimage"/>
        </constructor-arg>
    </bean>

    <bean >        
        <!--可选字符-->
        <constructor-arg>
            <value>0123456789</value>
            <!-- <value>abcdefghijklmnopquvwxyz</value> -->
        </constructor-arg>
    </bean>

    <bean >
        <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 >
        <!--最小字体-->
        <constructor-arg index="0">
            <value>16</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>12</value></constructor-arg>
                </bean>
            </list>
        </constructor-arg>
    </bean>
    <bean >
        <!--背景宽度-->
        <constructor-arg index="0">
            <value>90</value>
        </constructor-arg>
        <!--背景高度-->
        <constructor-arg index="1">
            <value>30</value>
        </constructor-arg>
    </bean>

    <bean >
        <!--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 >
        <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 >
        <constructor-arg type="java.awt.Color" index="0">
            <ref bean="colorBlack"/>
        </constructor-arg>
    </bean>
    <bean >
        <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 >
        <constructor-arg type="int" index="0">
            <value>50</value>
        </constructor-arg>
        <constructor-arg type="int" index="1">
            <value>50</value>
        </constructor-arg>
        <constructor-arg type="int" index="2">
            <value>50</value>
        </constructor-arg>
    </bean>
</beans>

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