安装 Graphviz

• 下载: http://graphviz.org/Download_windows.php
• 普通windows安装包安装

下载 plantuml.jar

• plantuml.jar: http://plantuml.com/download
• 任意位置，例：C:/plantuml.jar
  :: 不要放在类似 .emacs.d/ 这种命名的文件夹下

plantuml 配置

• github: https://github.com/skuro/plantuml-mode

;; active Org-babel languages
(org-babel-do-load-languages
    'org-babel-load-languages
      '(;; other Babel languages
           (plantuml . t)))

(setq org-plantuml-jar-path
      (expand-file-name "C:/plantuml.jar"))

;; Enable plantuml-mode for PlantUML files
(add-to-list 'auto-mode-alist '("\\.plantuml\\'" . plantuml-mode))

;; Integration with org-mode
(add-to-list 'org-src-lang-modes '("plantuml" . plantuml))

测试(C-c C-c 生成图片)

#+BEGIN_SRC plantuml :file ./demo.png
Bob->Alice : hello
#+END_SRC

#+RESULTS:
[[file:./demo.png]]

demo.png