{"image_url":null,"width":"100%","type":"rich","version":"1.0","categories":[],"provider_name":"Hatena Blog","title":"OGNL-3.1\u3067\u3001(!!\"1\") == false\u3000\u306b\u306a\u3063\u3066\u56f0\u3063\u305f","blog_title":"R42\u65e5\u8a18","blog_url":"https://takahashikzn.root42.jp/","published":"2015-09-03 21:03:50","author_url":"https://blog.hatena.ne.jp/takahashikzn/","author_name":"takahashikzn","height":"190","description":"OGNL-3.1\u304c\u3072\u3063\u305d\u308a\u3068\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3059\u304c\u3001\u304b\u306a\u308a\u56f0\u3063\u305f\u4ed5\u69d8\u5909\u66f4\u304c\u5165\u3063\u3066\u307e\u3059\u3002 foo || bar\u304c\u52d5\u304b\u306a\u3044 \u4f8b\u3048\u3070\u3001bar\u304c\u6587\u5b57\u5217\u578b\u306e\u5024\u3060\u3068\u3057\u3066\u3001 foo.aMethod(bar || \"default string\") \u306e\u3088\u3046\u306b\u3057\u3066\u3001bar\u304cnull\u306a\u3089\"default string\"\u3092\u6e21\u3059\u3088\u3046\u306a\u30b3\u30fc\u30c9\u304c\u52d5\u304b\u306a\u304f\u306a\u308a\u307e\u3059\u3002 \u3053\u308c\u306fJavascript\u7b49\u3067\u306f\u983b\u51fa\u3059\u308b\u30a4\u30c7\u30a3\u30aa\u30e0\u3067\u3059\u3002 \u3069\u3046\u5909\u308f\u3063\u305f\u306e\u304b \u3053\u3053\u306b\u8a73\u7d30\u304c\u3042\u308a\u307e\u3059\u3002 http://github.com/jkuhnert/ognl/issues/8 \u8981\u3059\u308b\u306b\u3001\u6587\u5b57\u5217\u578b\u306a\u3089\"true\"\u306e\u6642\u306e\u307ftrue\u3001\u305d\u308c\u4ee5\u5916\u306f\u5e38\u306bfals\u2026","provider_url":"https://hatena.blog","url":"https://takahashikzn.root42.jp/entry/2015/09/03/210350","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftakahashikzn.root42.jp%2Fentry%2F2015%2F09%2F03%2F210350\" title=\"OGNL-3.1\u3067\u3001(!!&quot;1&quot;) == false\u3000\u306b\u306a\u3063\u3066\u56f0\u3063\u305f - R42\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}