很不稳定，一会好用一会不好用。 严重: Servlet.service() for servlet Jcaptcha threw exception com.octo.captcha.CaptchaException: word is too tall: try to use less letters, smaller font or bigger background:  text  bounds = {text=ydxzbmg java.awt.geom.Rectangle2D$Float[x=0.0,y=-27.14502,w=13.5,h=36.87451] ascent=27.14502 descent=5.932617  leading=3.796875  java.awt.geom.Rectangle2D$Float[x=33.5,y=-30.161133,w=16.68457,h=40.97168] ascent=30.161133 descent=6.591797  leading=4.21875  java.awt.geom.Rectangle2D$Float[x=70.18457,y=-29.155762,w=16.128418,h=39.605957] ascent=29.155762  descent=6.3720703 leading=4.078125  java.awt.geom.Rectangle2D$Float[x=106.31299,y=-32.171875,w=16.0,h=43.703125] ascent=32.171875 descent=7.03125  leading=4.5  java.awt.geom.Rectangle2D$Float[x=142.31299,y=-31.166504,w=18.936035,h=42.337402] ascent=31.166504  descent=6.8115234 leading=4.359375  java.awt.geom.Rectangle2D$Float[x=181.24902,y=-33.177246,w=29.342285,h=45.068848] ascent=33.177246  descent=7.2509766 leading=4.640625  java.awt.geom.Rectangle2D$Float[x=230.59131,y=-33.177246,w=20.157715,h=45.068848] ascent=33.177246  descent=7.2509766 leading=4.640625  } with fonts {java.awt.Font[family=Dialog,name=Default,style=bolditalic,size=27] java.awt.Font[family=Dialog,name=Default,style=plain,size=27] java.awt.Font[family=Dialog,name=Default,style=plain,size=30] java.awt.Font[family=Dialog,name=Default,style=bolditalic,size=29] java.awt.Font[family=Dialog,name=Default,style=bolditalic,size=32] java.awt.Font[family=Dialog,name=Default,style=bold,size=31] java.awt.Font[family=Dialog,name=Default,style=bold,size=33] } versus image width = 110, height = 50 at com.octo.captcha.image.gimpy.GimpyFactory.getImageCaptcha(GimpyFactory.java:79) at com.octo.captcha.image.ImageCaptchaFactory.getCaptcha(ImageCaptchaFactory.java:37) at com.octo.captcha.engine.GenericCaptchaEngine.getNextCaptcha(GenericCaptchaEngine.java:81) at com.octo.captcha.service.AbstractCaptchaService.generateAndStoreCaptcha(AbstractCaptchaService.java:156) at com.octo.captcha.service.AbstractManageableCaptchaService.generateCountTimeStampAndStoreCaptcha (AbstractManageableCaptchaService.java:342) at com.octo.captcha.service.AbstractManageableCaptchaService.generateAndStoreCaptcha (AbstractManageableCaptchaService.java:331) at com.octo.captcha.service.AbstractCaptchaService.getChallengeForID(AbstractCaptchaService.java:73) at com.octo.captcha.service.multitype.GenericManageableCaptchaService.getImageChallengeForID (GenericManageableCaptchaService.java:81) at com.jeecms.common.captcha.JcaptchaServlet.doGet(JcaptchaServlet.java:45) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter (StrutsPrepareAndExecuteFilter.java:88) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal (OpenSessionInViewFilter.java:198) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:861) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1584) at java.lang.Thread.run(Thread.java:662) Caused by: com.octo.captcha.CaptchaException: word is too tall: try to use less letters, smaller font or bigger  background:  text bounds = {text=ydxzbmg java.awt.geom.Rectangle2D$Float[x=0.0,y=-27.14502,w=13.5,h=36.87451] ascent=27.14502 descent=5.932617  leading=3.796875  java.awt.geom.Rectangle2D$Float[x=33.5,y=-30.161133,w=16.68457,h=40.97168] ascent=30.161133 descent=6.591797  leading=4.21875  java.awt.geom.Rectangle2D$Float[x=70.18457,y=-29.155762,w=16.128418,h=39.605957] ascent=29.155762  descent=6.3720703 leading=4.078125  java.awt.geom.Rectangle2D$Float[x=106.31299,y=-32.171875,w=16.0,h=43.703125] ascent=32.171875 descent=7.03125  leading=4.5  java.awt.geom.Rectangle2D$Float[x=142.31299,y=-31.166504,w=18.936035,h=42.337402] ascent=31.166504  descent=6.8115234 leading=4.359375  java.awt.geom.Rectangle2D$Float[x=181.24902,y=-33.177246,w=29.342285,h=45.068848] ascent=33.177246  descent=7.2509766 leading=4.640625  java.awt.geom.Rectangle2D$Float[x=230.59131,y=-33.177246,w=20.157715,h=45.068848] ascent=33.177246  descent=7.2509766 leading=4.640625  } with fonts {java.awt.Font[family=Dialog,name=Default,style=bolditalic,size=27] java.awt.Font[family=Dialog,name=Default,style=plain,size=27] java.awt.Font[family=Dialog,name=Default,style=plain,size=30] java.awt.Font[family=Dialog,name=Default,style=bolditalic,size=29] java.awt.Font[family=Dialog,name=Default,style=bolditalic,size=32] java.awt.Font[family=Dialog,name=Default,style=bold,size=31] java.awt.Font[family=Dialog,name=Default,style=bold,size=33] } versus image width = 110, height = 50 at com.octo.captcha.component.image.textpaster.ChangeableAttributedString.moveToRandomSpot (ChangeableAttributedString.java:184) at com.octo.captcha.component.image.textpaster.ChangeableAttributedString.moveToRandomSpot (ChangeableAttributedString.java:111) at com.octo.captcha.component.image.textpaster.DecoratedRandomTextPaster.pasteText (DecoratedRandomTextPaster.java:82) at com.octo.captcha.component.image.wordtoimage.ComposedWordToImage.pasteText(ComposedWordToImage.java:130) at com.octo.captcha.component.image.wordtoimage.AbstractWordToImage.getImage(AbstractWordToImage.java:52) at com.octo.captcha.image.gimpy.GimpyFactory.getImageCaptcha(GimpyFactory.java:77) ... 33 more

您是3.0.1版本的吗？

是不是图片 长宽设置的 问题？

是最新版本 3.0.1  ，要怎么样修改呢？

http://jcaptcha.octo.com/jira/browse/FWK-58  在jcaptcha 官网jira 有人好像提交的有这个BUG，
要求字体设置小点 或者 背景设置大点，不知道你们正式版本修改了没有，是怎么设置的？

验证码的问题目前目前正在修改中，会在正式版的时候修改

<!--最小字体-->
<constructor-arg index="0">
<value>20</value>
</constructor-arg>
<!--最大字体-->
<constructor-arg index="1">
<value>28</value>
</constructor-arg>

我把最小字体 和最大字体修改一下，好像不出问题了，但是太难看了， 背景大字体下 能不能弄的漂亮点？

这个是样式的问题了，您可以修改下后台的模版

据说有个jar包下载

回复第9楼