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新增Maven项目模板
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‎maven_project_template/maven_account_parent/maven_account_captcha/pom.xml‎

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>com.jun.plugin.account</groupId>
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<artifactId>maven_account_parent</artifactId>
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<version>1.0.0-SNAPSHOT</version>
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</parent>
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<artifactId>maven_account_captcha</artifactId>
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<name>Account Captcha</name>
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<properties>
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<kaptcha.version>2.3</kaptcha.version>
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</properties>
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<dependencies>
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<!-- kaptcha -->
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<dependency>
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<groupId>com.github.axet</groupId>
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<artifactId>kaptcha</artifactId>
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<version>0.0.9</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-core</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-beans</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-context</artifactId>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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</dependency>
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</dependencies>
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<!-- <repositories>
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<repository>
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<id>sonatype-forge</id>
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<name>Sonatype Forge</name>
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<url>http://repository.sonatype.org/content/groups/forge/</url>
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<releases>
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<enabled>true</enabled>
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</releases>
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<snapshots>
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<enabled>false</enabled>
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</snapshots>
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</repository>
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</repositories> -->
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</project>

‎maven_project_template/maven_account_parent/maven_account_captcha/src/main/java/com/jun/plugin/teamplate/account/captcha/AccountCaptchaException.java‎

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package com.jun.plugin.teamplate.account.captcha;
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public class AccountCaptchaException
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extends Exception
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{
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private static final long serialVersionUID = 1339439433313285858L;
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public AccountCaptchaException( String message )
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{
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super( message );
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}
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public AccountCaptchaException( String message, Throwable throwable )
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{
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super( message, throwable );
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}
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}

‎maven_project_template/maven_account_parent/maven_account_captcha/src/main/java/com/jun/plugin/teamplate/account/captcha/AccountCaptchaService.java‎

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package com.jun.plugin.teamplate.account.captcha;
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import java.util.List;
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public interface AccountCaptchaService
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{
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String generateCaptchaKey()
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throws AccountCaptchaException;
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byte[] generateCaptchaImage( String captchaKey )
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throws AccountCaptchaException;
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boolean validateCaptcha( String captchaKey, String captchaValue )
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throws AccountCaptchaException;
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List<String> getPreDefinedTexts();
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void setPreDefinedTexts( List<String> preDefinedTexts );
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}

‎maven_project_template/maven_account_parent/maven_account_captcha/src/main/java/com/jun/plugin/teamplate/account/captcha/AccountCaptchaServiceImpl.java‎

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package com.jun.plugin.teamplate.account.captcha;
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import java.awt.image.BufferedImage;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Properties;
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import javax.imageio.ImageIO;
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import org.springframework.beans.factory.InitializingBean;
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import com.google.code.kaptcha.impl.DefaultKaptcha;
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import com.google.code.kaptcha.util.Config;
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public class AccountCaptchaServiceImpl
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implements AccountCaptchaService, InitializingBean
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{
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private DefaultKaptcha producer;
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private Map<String, String> captchaMap = new HashMap<String, String>();
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private List<String> preDefinedTexts;
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private int textCount = 0;
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public void afterPropertiesSet()
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throws Exception
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{
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producer = new DefaultKaptcha();
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producer.setConfig( new Config( new Properties() ) );
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}
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public String generateCaptchaKey()
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{
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String key = RandomGenerator.getRandomString();
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String value = getCaptchaText();
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captchaMap.put( key, value );
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return key;
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}
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public List<String> getPreDefinedTexts()
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{
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return preDefinedTexts;
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}
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public void setPreDefinedTexts( List<String> preDefinedTexts )
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{
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this.preDefinedTexts = preDefinedTexts;
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}
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private String getCaptchaText()
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{
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if ( preDefinedTexts != null && !preDefinedTexts.isEmpty() )
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{
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String text = preDefinedTexts.get( textCount );
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textCount = ( textCount + 1 ) % preDefinedTexts.size();
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return text;
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}
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else
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{
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return producer.createText();
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}
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}
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public byte[] generateCaptchaImage( String captchaKey )
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throws AccountCaptchaException
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{
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String text = captchaMap.get( captchaKey );
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if ( text == null )
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{
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throw new AccountCaptchaException( "Captch key '" + captchaKey + "' not found!" );
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}
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BufferedImage image = producer.createImage( text );
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ByteArrayOutputStream out = new ByteArrayOutputStream();
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try
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{
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ImageIO.write( image, "jpg", out );
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}
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catch ( IOException e )
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{
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throw new AccountCaptchaException( "Failed to write captcha stream!", e );
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}
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return out.toByteArray();
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}
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public boolean validateCaptcha( String captchaKey, String captchaValue )
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throws AccountCaptchaException
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{
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String text = captchaMap.get( captchaKey );
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if ( text == null )
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{
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throw new AccountCaptchaException( "Captch key '" + captchaKey + "' not found!" );
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}
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if ( text.equals( captchaValue ) )
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{
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captchaMap.remove( captchaKey );
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return true;
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}
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else
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{
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return false;
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}
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}
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}

‎maven_project_template/maven_account_parent/maven_account_captcha/src/main/java/com/jun/plugin/teamplate/account/captcha/RandomGenerator.java‎

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package com.jun.plugin.teamplate.account.captcha;
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import java.util.Random;
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public class RandomGenerator
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{
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private static String range = "0123456789abcdefghijklmnopqrstuvwxyz";
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public static synchronized String getRandomString()
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{
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Random random = new Random();
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StringBuffer result = new StringBuffer();
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for ( int i = 0; i < 8; i++ )
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{
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result.append( range.charAt( random.nextInt( range.length() ) ) );
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}
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return result.toString();
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}
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}

‎maven_project_template/maven_account_parent/maven_account_captcha/src/main/resources/account-captcha.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
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<bean id="accountCaptchaService"
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class="com.jun.plugin.teamplate.account.captcha.AccountCaptchaServiceImpl">
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</bean>
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</beans>

‎maven_project_template/maven_account_parent/maven_account_captcha/src/test/java/com/jun/plugin/teamplate/account/captcha/AccountCaptchaServiceTest.java‎

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package com.jun.plugin.teamplate.account.captcha;
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import static org.junit.Assert.*;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.OutputStream;
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import java.util.ArrayList;
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import java.util.List;
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import org.junit.Before;
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import org.junit.Test;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.support.ClassPathXmlApplicationContext;
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import com.jun.plugin.teamplate.account.captcha.AccountCaptchaService;
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public class AccountCaptchaServiceTest
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{
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private AccountCaptchaService service;
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@Before
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public void prepare()
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throws Exception
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{
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ApplicationContext ctx = new ClassPathXmlApplicationContext( "account-captcha.xml" );
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service = (AccountCaptchaService) ctx.getBean( "accountCaptchaService" );
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}
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@Test
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public void testGenerateCaptcha()
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throws Exception
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{
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String captchaKey = service.generateCaptchaKey();
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assertNotNull( captchaKey );
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byte[] captchaImage = service.generateCaptchaImage( captchaKey );
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assertTrue( captchaImage.length > 0 );
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File image = new File( "target/" + captchaKey + ".jpg" );
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OutputStream output = null;
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try
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{
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output = new FileOutputStream( image );
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output.write( captchaImage );
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}
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finally
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{
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if ( output != null )
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{
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output.close();
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}
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}
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assertTrue( image.exists() && image.length() > 0 );
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}
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@Test
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public void testValidateCaptchaCorrect()
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throws Exception
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{
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List<String> preDefinedTexts = new ArrayList<String>();
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preDefinedTexts.add( "12345" );
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preDefinedTexts.add( "abcde" );
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service.setPreDefinedTexts( preDefinedTexts );
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String captchaKey = service.generateCaptchaKey();
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service.generateCaptchaImage( captchaKey );
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assertTrue( service.validateCaptcha( captchaKey, "12345" ) );
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captchaKey = service.generateCaptchaKey();
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service.generateCaptchaImage( captchaKey );
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assertTrue( service.validateCaptcha( captchaKey, "abcde" ) );
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}
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@Test
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public void testValidateCaptchaIncorrect()
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throws Exception
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{
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List<String> preDefinedTexts = new ArrayList<String>();
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preDefinedTexts.add( "12345" );
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service.setPreDefinedTexts( preDefinedTexts );
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String captchaKey = service.generateCaptchaKey();
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service.generateCaptchaImage( captchaKey );
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assertFalse( service.validateCaptcha( captchaKey, "67890" ) );
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}
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}

‎maven_project_template/maven_account_parent/maven_account_captcha/src/test/java/com/jun/plugin/teamplate/account/captcha/RandomGeneratorTest.java‎

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package com.jun.plugin.teamplate.account.captcha;
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import static org.junit.Assert.assertFalse;
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import java.util.HashSet;
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import java.util.Set;
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import org.junit.Test;
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import com.jun.plugin.teamplate.account.captcha.RandomGenerator;
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public class RandomGeneratorTest
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{
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@Test
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public void testGetRandomString()
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throws Exception
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{
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Set<String> randoms = new HashSet<String>( 100 );
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for ( int i = 0; i < 100; i++ )
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{
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String random = RandomGenerator.getRandomString();
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assertFalse( randoms.contains( random ) );
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randoms.add( random );
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}
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}
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}

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