1、springBoot版本 1.5.9
2、jdk 版本 1.8
問題描述：

http://localhost:35620/api/admin/login
2018-06-02 00:04:31.739 |-INFO  [XNIO-2 task-1] org.thymeleaf.TemplateEngine [825] -| [THYMELEAF] INITIALIZING TEMPLATE ENGINE
2018-06-02 00:04:31.849 |-INFO  [XNIO-2 task-1] org.thymeleaf.templateresolver.AbstractTemplateResolver [99] -| [THYMELEAF] INITIALIZING TEMPLATE RESOLVER: org.thymeleaf.spring4.templateresolver.SpringResourceTemplateResolver
2018-06-02 00:04:31.850 |-INFO  [XNIO-2 task-1] org.thymeleaf.templateresolver.AbstractTemplateResolver [110] -| [THYMELEAF] TEMPLATE RESOLVER INITIALIZED OK
2018-06-02 00:04:31.851 |-INFO  [XNIO-2 task-1] org.thymeleaf.messageresolver.AbstractMessageResolver [72] -| [THYMELEAF] INITIALIZING MESSAGE RESOLVER: org.thymeleaf.spring4.messageresolver.SpringMessageResolver
2018-06-02 00:04:31.851 |-INFO  [XNIO-2 task-1] org.thymeleaf.messageresolver.AbstractMessageResolver [78] -| [THYMELEAF] MESSAGE RESOLVER INITIALIZED OK
2018-06-02 00:04:31.862 |-INFO  [XNIO-2 task-1] org.thymeleaf.TemplateEngine.CONFIG [123] -| [THYMELEAF] TEMPLATE ENGINE CONFIGURATION:
[THYMELEAF] * Cache Factory implementation: org.thymeleaf.cache.StandardCacheManager
[THYMELEAF] * Template modes:
[THYMELEAF]     * XHTML
[THYMELEAF]     * HTML5
[THYMELEAF]     * VALIDXML
[THYMELEAF]     * VALIDXHTML
[THYMELEAF]     * LEGACYHTML5
[THYMELEAF]     * XML
[THYMELEAF] * Template resolvers (in order):
[THYMELEAF]     * org.thymeleaf.spring4.templateresolver.SpringResourceTemplateResolver
[THYMELEAF] * Message resolvers (in order):
[THYMELEAF]     * org.thymeleaf.spring4.messageresolver.SpringMessageResolver
[THYMELEAF] * Dialect [1 of 2]: org.thymeleaf.spring4.dialect.SpringStandardDialect
[THYMELEAF]     * Prefix: "th"
[THYMELEAF] * Dialect [2 of 2]: nz.net.ultraq.thymeleaf.LayoutDialect
[THYMELEAF]     * Prefix: "layout"
[THYMELEAF] TEMPLATE ENGINE CONFIGURED OK
2018-06-02 00:04:31.863 |-INFO  [XNIO-2 task-1] org.thymeleaf.TemplateEngine [838] -| [THYMELEAF] TEMPLATE ENGINE INITIALIZED
http://localhost:35620/api/admin/verify-code
http://localhost:35620/api/error

訪問首頁， 會請求繪制驗證碼，但是在繪制的時候，輸出了 http://localhost:35620/api/error 這個。在windows 下面不會跳轉(zhuǎn)到error頁面，能成功登入，部署到linux上面，立馬跳轉(zhuǎn)到error頁面。

我debug的時候，發(fā)現(xiàn)在執(zhí)行完

 BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

這條語句時，就會出錯，但是出錯的原因完全不清楚。

備注： 嵌入式的服務(wù)器用的是 undertow， 不是用tomcat