javax.imageio.IIOException: Can't create output stream

javax.imageio.IIOException: Can't create output stream!

javax.imageio.IIOException: Can't create output stream!javax.imageio.ImageIO.write(ImageIO.java:1560)com.zte.ngccap.web.actions.VerifyCodeController.handleRequest(VerifyCodeController.java:124)sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)java.lang.reflect.Method.invoke(Method.java:597)org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426)org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414)org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)javax.servlet.http.HttpServlet.service(HttpServlet.java:617)javax.servlet.http.HttpServlet.service(HttpServlet.java:717)org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:81)org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:359)org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:275)org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:344)org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:272)org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:81)org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)com.zte.ngccap.web.filter.EnvironmentFilter.doFilterInternal(EnvironmentFilter.java:135)org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)root cause javax.imageio.IIOException: Can't create cache file!javax.imageio.ImageIO.createImageOutputStream(ImageIO.java:397)javax.imageio.ImageIO.write(ImageIO.java:1558)com.zte.ngccap.web.actions.VerifyCodeController.handleRequest(VerifyCodeController.java:124)sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)java.lang.reflect.Method.invoke(Method.java:597)org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426)org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414)org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)javax.servlet.http.HttpServlet.service(HttpServlet.java:617)javax.servlet.http.HttpServlet.service(HttpServlet.java:717)org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:81)org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:359)org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:275)org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:344)org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:272)org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:81)org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)com.zte.ngccap.web.filter.EnvironmentFilter.doFilterInternal(EnvironmentFilter.java:135)org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)root cause java.io.IOException: 系统找不到指定的路径。java.io.WinNTFileSystem.createFileExclusively(Native Method)java.io.File.checkAndCreate(File.java:1704)java.io.File.createTempFile(File.java:1792)javax.imageio.stream.FileCacheImageOutputStream.<init>(FileCacheImageOutputStream.java:71)com.sun.imageio.spi.OutputStreamImageOutputStreamSpi.createOutputStreamInstance(OutputStreamImageOutputStreamSpi.java:50)javax.imageio.ImageIO.createImageOutputStream(ImageIO.java:393)javax.imageio.ImageIO.write(ImageIO.java:1558)com.zte.ngccap.web.actions.VerifyCodeController.handleRequest(VerifyCodeController.java:124)sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)java.lang.reflect.Method.invoke(Method.java:597)org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426)org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414)org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)javax.servlet.http.HttpServlet.service(HttpServlet.java:617)javax.servlet.http.HttpServlet.service(HttpServlet.java:717)org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:81)org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:359)org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:275)org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:344)org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:272)org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:81)org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)com.zte.ngccap.web.filter.EnvironmentFilter.doFilterInternal(EnvironmentFilter.java:135)org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)

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今天验证码不出现提示如上异常，后搜索搞定。

原因：因采用绿色版tomcat，tomcat根目录下没有 temp 文件夹(temp为tomcat临时文件夹，用于存放图片、文件上传等临时文件)，系统在创建临时文件夹时无法找到目录导致。

解决方案：手动创建 temp 文件夹即可。