ztree 选中刷新之后选中不变

[{"title":"（ 312 个子文件 1.85MB ） ztree 选中刷新之后选中不变","children":[{"title":"bootstrap.min.css <span style='color:#111;'> 118.36KB </span>","children":null,"spread":false},{"title":"fontawesome-all.css <span style='color:#111;'> 42.22KB </span>","children":null,"spread":false},{"title":"fontawesome.css <span style='color:#111;'> 40.70KB </span>","children":null,"spread":false},{"title":"fontawesome-all.min.css <span style='color:#111;'> 33.92KB </span>","children":null,"spread":false},{"title":"fontawesome.min.css <span style='color:#111;'> 32.59KB </span>","children":null,"spread":false},{"title":"bootstrap-theme.min.css <span style='color:#111;'> 22.86KB </span>","children":null,"spread":false},{"title":"fileinput.css <span style='color:#111;'> 11.28KB </span>","children":null,"spread":false},{"title":"fileinput.min.css <span style='color:#111;'> 8.50KB </span>","children":null,"spread":false},{"title":"awesome.css <span style='color:#111;'> 8.19KB 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