在linux环境中由于未安装字符集,导致验证码的生成错误,后台日志报错如下

javax.servlet.ServletException: org.glassfish.jersey.server.ContainerException: java.lang.InternalError: java.lan                                                   g.reflect.InvocationTargetException
        at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:489)
        at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427)
        at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388)
        at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341)
        at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228)
        at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:763)
        at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1633)
        at org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:228)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1609)
        at com.x.base.core.project.jaxrs.CipherManagerJaxrsFilter.doFilter(CipherManagerJaxrsFilter.java:40)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1609)
        at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:124)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1609)
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:561)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:602)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1612)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1582)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
        at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:59)
        at org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:766)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
        at org.eclipse.jetty.server.Server.handle(Server.java:516)
        at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383)
        at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:556)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375)
        at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273)
        at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
        at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
        at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
        at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:37                                                   5)
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:773)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:905)
        at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: org.glassfish.jersey.server.ContainerException: java.lang.InternalError: java.lang.reflect.InvocationT                                                   argetException
        at org.glassfish.jersey.servlet.internal.ResponseWriter.rethrow(ResponseWriter.java:278)
        at org.glassfish.jersey.servlet.internal.ResponseWriter.failure(ResponseWriter.java:260)
        at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:509)
        at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:334)
        at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
        at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
        at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
        at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
        at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
        at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
        at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
        at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
        at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473)
        ... 48 more
Caused by: java.lang.InternalError: java.lang.reflect.InvocationTargetException
        at java.desktop/sun.font.FontManagerFactory$1.run(FontManagerFactory.java:86)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at java.desktop/sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:74)
        at java.desktop/sun.font.SunFontManager.getInstance(SunFontManager.java:247)
        at java.desktop/sun.font.FontDesignMetrics.getMetrics(FontDesignMetrics.java:265)
        at java.desktop/sun.java2d.SunGraphics2D.getFontMetrics(SunGraphics2D.java:861)
        at com.wf.captcha.SpecCaptcha.graphicsImage(SpecCaptcha.java:76)
        at com.wf.captcha.SpecCaptcha.out(SpecCaptcha.java:45)
        at com.wf.captcha.base.Captcha.toBase64(Captcha.java:127)
        at com.x.program.center.jaxrs.captcha.V2Create.execute(V2Create.java:42)
        at com.x.program.center.jaxrs.captcha.CaptchaAction.V2Create(CaptchaAction.java:77)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:4                                                   3)

解决办法

安装字符集

yum install -y fontconfig urw-fonts