{"id":31411,"date":"2023-09-11T17:03:29","date_gmt":"2023-11-25T16:05:01","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java%e7%b3%bb%e7%bb%9f%e5%b1%9e%e6%80%a7%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f\/"},"modified":"2025-08-12T23:54:14","modified_gmt":"2025-08-12T15:54:14","slug":"java%e7%b3%bb%e7%bb%9f%e5%b1%9e%e6%80%a7%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java%e7%b3%bb%e7%bb%9f%e5%b1%9e%e6%80%a7%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f\/","title":{"rendered":"Java\u7cfb\u7edf\u5c5e\u6027\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

\u4eca\u5929\u7684\u8bae\u9898\u662f\u201c\u7cfb\u7edf\u5c5e\u6027\u201d\u3002\u7531\u4e8e\u8fd9\u65b9\u9762\u7684\u5185\u5bb9\u53ea\u6709\u7b80\u5355\u7684\u4e66\u7c4d\u4ecb\u7ecd\uff0c\u6240\u4ee5\u6211\u4eec\u7684\u76ee\u6807\u662f\u7ed3\u5408\u5b98\u65b9\u6587\u6863\u7b49\u8fdb\u884c\u6574\u7406\u3002<\/p>\n

\u7cfb\u7edf\u5c5e\u6027\u662f\u6307<\/h1>\n

\u9996\u5148\uff0c\u4ec0\u4e48\u662f\u5c5e\u6027\uff08\u30d7\u30ed\u30d1\u30c6\u30a3\uff09\uff1f
\n\u5c5e\u6027\uff08\u30d7\u30ed\u30d1\u30c6\u30a3\uff09\u88ab\u7ffb\u8bd1\u4e3a\u65e5\u8bed\u4e2d\u7684\u300c\u5c5e\u6027\u300d\u6216\u300c\u7279\u6027\u300d\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5b83\u8868\u793a\u5173\u4e8e\u67d0\u4e2a\u5bf9\u8c61\u7279\u5f81\u7684\u4fe1\u606f\u3002
\n\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u6d4f\u89c8\u67d0\u4e2a\u6587\u4ef6\u7684\u5c5e\u6027\u65f6\uff0c\u53ef\u4ee5\u770b\u5230\u5b83\u662f\u4f55\u65f6\u521b\u5efa\u7684\uff0c\u6269\u5c55\u540d\u662f\u4ec0\u4e48\uff0c\u7f16\u7801\u662f\u4ec0\u4e48\u7b49\u7b49\uff0c\u5305\u542b\u4e86\u5404\u79cd\u5404\u6837\u7684\u5c5e\u6027\u3002<\/p>\n

\u5728\u4e2d\u6587\u4e2d\uff0c\u7cfb\u7edf\u5c5e\u6027\u662f\u6307Java\u7684\u7cfb\u7edf\uff0c\u5373JVM\u76f8\u5173\u4fe1\u606f\u3002\u5728Java\u4e2d\uff0c\u5b83\u53ef\u4ee5\u4f7f\u7528Map\u7684\u5f62\u5f0f\u8fdb\u884c\u5904\u7406\uff0c\u5e76\u88ab\u5b58\u50a8\u5728Properties\u7c7b\u4e2d\u3002\u5173\u4e8eProperties\u7c7b\u7684\u8be6\u7ec6\u5185\u5bb9\u5c06\u7a0d\u540e\u8bf4\u660e\uff0c\u800cMap\u662f\u4e00\u79cd\u53ef\u4ee5\u5b58\u50a8\u591a\u4e2a\u5b57\u7b26\u4e32\u548c\u5b57\u7b26\u4e32\u5bf9\u7684\u5bb9\u5668\u3002<\/p>\n

\u66f4\u5177\u4f53\u7684\u4f8b\u5b50\u662f\uff0c\u4f8b\u5982Java\u7684\u7248\u672c\uff1a11.0.9\uff0c\u8fd9\u4e2a\u5b57\u7b26\u4e32\u548c\u5b57\u7b26\u4e32\u5c06\u4f5c\u4e3a\u952e\u503c\u5bf9\u5b58\u50a8\u5728Properties\u7c7b\u4e2d\u3002<\/p>\n

\u9664\u6b64\u4e4b\u5916\uff0c\u8fd8\u5305\u62ec\u4e86\u5176\u4ed6\u5404\u79cd\u5185\u5bb9\u3002\u867d\u7136\u4e0d\u9700\u8981\u8bb0\u4f4f\u6240\u6709\u8fd9\u4e9b\u4fe1\u606f\uff0c\u4f46\u5b83\u4eec\u975e\u5e38\u65b9\u4fbf\uff0c\u6240\u4ee5\u81f3\u5c11\u8981\u7406\u89e3\u5b83\u4eec\u8868\u793a\u7684\u662f\u4ec0\u4e48\u3002<\/p>\n

\n
\u30ad\u30fc\u5bfe\u5fdc\u3059\u308b\u5024\u306e\u8aac\u660ejava.versionJava Runtime Environment\u306e\u30d0\u30fc\u30b8\u30e7\u30f3java.vendorJava Runtime Environment\u306e\u30d9\u30f3\u30c0\u30fcjava.vendor.urlJava\u30d9\u30f3\u30c0\u30fc\u306eURLjava.homeJava\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u5148\u30c7\u30a3\u30ec\u30af\u30c8\u30eajava.vm.specification.versionJava\u4eee\u60f3\u30de\u30b7\u30f3\u306e\u4ed5\u69d8\u30d0\u30fc\u30b8\u30e7\u30f3java.vm.specification.vendorJava\u4eee\u60f3\u30de\u30b7\u30f3\u306e\u4ed5\u69d8\u306e\u30d9\u30f3\u30c0\u30fcjava.vm.specification.nameJava\u4eee\u60f3\u30de\u30b7\u30f3\u306e\u4ed5\u69d8\u540djava.vm.versionJava\u4eee\u60f3\u30de\u30b7\u30f3\u306e\u5b9f\u88c5\u30d0\u30fc\u30b8\u30e7\u30f3java.vm.vendorJava\u4eee\u60f3\u30de\u30b7\u30f3\u306e\u5b9f\u88c5\u306e\u30d9\u30f3\u30c0\u30fcjava.vm.nameJava\u4eee\u60f3\u30de\u30b7\u30f3\u306e\u5b9f\u88c5\u540djava.specification.versionJava Runtime Environment\u306e\u4ed5\u69d8\u30d0\u30fc\u30b8\u30e7\u30f3java.specification.vendorJava Runtime Environment\u306e\u4ed5\u69d8\u306e\u30d9\u30f3\u30c0\u30fcjava.specification.nameJava Runtime Environment\u306e\u4ed5\u69d8\u540djava.class.versionJava\u30af\u30e9\u30b9\u306e\u5f62\u5f0f\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u756a\u53f7java.class.pathJava\u30af\u30e9\u30b9\u30fb\u30d1\u30b9java.library.path\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30ed\u30fc\u30c9\u6642\u306b\u691c\u7d22\u3059\u308b\u30d1\u30b9\u306e\u30ea\u30b9\u30c8java.io.tmpdir\u30c7\u30d5\u30a9\u30eb\u30c8\u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u306e\u30d1\u30b9java.compiler\u4f7f\u7528\u3059\u308bJIT\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u540d\u524djava.ext.dirs\u62e1\u5f35\u30c7\u30a3\u30ec\u30af\u30c8\u30eaDeprecated.\u306e\u30d1\u30b9\u3053\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u304a\u3088\u3073\u3053\u308c\u3092\u5b9f\u88c5\u3059\u308b\u30e1\u30ab\u30cb\u30ba\u30e0\u306f\u5c06\u6765\u306e\u30ea\u30ea\u30fc\u30b9\u3067\u524a\u9664\u3055\u308c\u307e\u3059\u3002os.name\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30fb\u30b7\u30b9\u30c6\u30e0\u540dos.arch\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30fb\u30b7\u30b9\u30c6\u30e0\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3os.version\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30fb\u30b7\u30b9\u30c6\u30e0\u306e\u30d0\u30fc\u30b8\u30e7\u30f3file.separator\u30d5\u30a1\u30a4\u30eb\u533a\u5207\u308a\u6587\u5b57(UNIX\u3067\u306f”\/”)path.separator\u30d1\u30b9\u533a\u5207\u308a\u6587\u5b57(UNIX\u3067\u306f”:”)line.separator\u884c\u533a\u5207\u308a\u6587\u5b57(UNIX\u3067\u306f”\\n”)user.name\u30e6\u30fc\u30b6\u30fc\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u540duser.home\u30e6\u30fc\u30b6\u30fc\u306e\u30db\u30fc\u30e0\u30fb\u30c7\u30a3\u30ec\u30af\u30c8\u30eauser.dir\u30e6\u30fc\u30b6\u30fc\u306e\u73fe\u5728\u306e\u4f5c\u696d\u30c7\u30a3\u30ec\u30af\u30c8\u30ea<\/div>\n<\/div>\n

\u5c5e\u6027\u7c7b<\/h1>\n

Properties\u7c7b\u7684\u5b98\u65b9\u6587\u4ef6<\/p>\n

\u6839\u636e\u516c\u5f0f\u6587\u6863\u663e\u793a\uff0cProperties\u7c7b\u662f<\/p>\n

\u8868\u793a\u5c5e\u6027\u7684\u96c6\u5408\u3002<\/p><\/blockquote>\n

\u9019\u662f\u5c0d\u4e4b\u524d\u8a0e\u8ad6\u904e\u7684\u5167\u5bb9\u7684\u5be6\u884c\u3002\u9019\u500b\u985e\u5225\u64c1\u6709\u591a\u7a2e\u65b9\u6cd5\uff0c\u4f46\u9019\u500bProperties\u985e\u5225\u672c\u4f86\u5c31\u662f\u88abSystem\u985e\u5225\u7684getProperties()\u65b9\u6cd5\u6240\u547c\u53eb\u7684\u3002
\nSystem\u985e\u5225\u7684\u5b98\u65b9\u6587\u4ef6\u3002<\/p>\n

\u6b64\u5916\uff0c\u7531\u4e8eMap\u7684\u5f62\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528key\u6765\u8c03\u7528value\u3002\u53ef\u4ee5\u901a\u8fc7System\u7c7b\u7684getProperty(key)\u65b9\u6cd5\u8c03\u7528\u76f8\u5e94\u7684value\u3002<\/p>\n

\u901a\u8fc7\u4f7f\u7528\u7cfb\u7edf\u5c5e\u6027\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6d88\u9664\u73af\u5883\u4f9d\u8d56\u3002\u4f8b\u5982\uff0c<\/p>\n

System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"\u79c1\u306e\u540d\u524d\u306f\\n\u592a\u90ce\u3067\u3059\u3002\"<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u8fd9\u6bb5\u4ee3\u7801\u4f1a\u6839\u636e\u4e0d\u540c\u7684\u64cd\u4f5c\u7cfb\u7edf\u663e\u793a\u4e0d\u540c\u7684\u5185\u5bb9\u3002
\n\u5982\u679c\u662fLinux\u7cfb\u7edf\uff0c<\/p>\n
\u6211\u53eb\u592a\u90ce\u3002<\/p><\/blockquote>\n
\u867d\u7136\u5728\u65e7\u7248\u7684Mac OS\u4e2d\uff0c<\/p>\n
\u6211\u7684\u540d\u5b57\u662f\u592a\u90ce\u3002<\/p><\/blockquote>\n
\u7531\u4e8e\u4e0d\u540c\u7684\u64cd\u4f5c\u7cfb\u7edf\u5bf9”\\n”\u6709\u4e0d\u540c\u7684\u610f\u4e49\uff0c\u8fd9\u5c31\u662f\u539f\u56e0\u3002
\n\u8981\u4f7f\u4e0a\u9762\u7684\u4ee3\u7801\u5728\u4efb\u4f55\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u90fd\u5305\u542b\u6362\u884c\u7b26\uff0c\u53ea\u9700\u91c7\u7528\u4e0b\u9762\u7684\u65b9\u6cd5\u3002<\/p>\n
final<\/span> String<\/span> BR<\/span> =<\/span> System<\/span>.<\/span>getProperty<\/span>(<\/span>\"line.separator\"<\/span>);<\/span>\r\nSystem<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"\u79c1\u306e\u540d\u524d\u306f\"<\/span> +<\/span> BR<\/span> +<\/span> \"\u592a\u90ce\u3067\u3059\u3002\"<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u6309\u7167\u4e0a\u8ff0\u7684\u65b9\u5f0f\u8fdb\u884c\uff0c\u4f1a\u63d2\u5165\u8868\u793a\u64cd\u4f5c\u7cfb\u7edf\u6362\u884c\u7684\u7279\u6b8a\u5b57\u7b26\uff0c\u56e0\u6b64\u5c06\u603b\u662f\u53d1\u751f\u6362\u884c\u3002
\n\u5c31\u50cf\u4e0a\u8ff0\u7684\u4f8b\u5b50\u4e00\u6837\uff0c\u5982\u679c\u4f7f\u7528\u5f97\u5f53\uff0c\u53ef\u4ee5\u7f16\u5199\u4e0d\u4f9d\u8d56\u64cd\u4f5c\u7cfb\u7edf\u7684\u7a0b\u5e8f\u3002<\/p>\n
\u8fc7\u53bb\u6211\u4eec\u5df2\u7ecf\u770b\u5230\u4e86\u83b7\u53d6\u5c5e\u6027\u7684\u51fd\u6570\uff0c\u4f46\u662f\u4e5f\u6709\u8bbe\u7f6e\u5c5e\u6027\u7684\u51fd\u6570\u3002\u8be5\u51fd\u6570\u662f\u901a\u8fc7System.setProperty(key, value)\u65b9\u6cd5\u5b9e\u73b0\u7684\u3002<\/p>\n
\u5728\u8fd9\u91cc\u9700\u8981\u6ce8\u610f\u3002
\n\u7cfb\u7edf\u5c5e\u6027\u662f\u4e00\u4e2a\u65b9\u4fbf\u7684\u5b58\u50a8\u533a\u57df\uff0c\u53ef\u4ee5\u4ece\u4efb\u4f55\u7c7b\u76f4\u63a5\u8bfb\u5199\uff0c\u4f46\u5bb9\u6613\u6210\u4e3a\u6545\u969c\u7684\u539f\u56e0\uff0c\u56e0\u6b64\u6ee5\u7528\u662f\u4e0d\u53ef\u53d6\u7684\u3002<\/p>\n
\u83b7\u53d6\u7cfb\u7edf\u5c5e\u6027\u7684\u4ee3\u7801\u793a\u4f8b<\/h1>\n
    public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[]<\/span> args<\/span>)<\/span> {<\/span>\r\n        \/\/ Properties\u30af\u30e9\u30b9\u3092\u53d6\u5f97<\/span>\r\n        Properties<\/span> properties<\/span> =<\/span> System<\/span>.<\/span>getProperties<\/span>();<\/span>\r\n\r\n        Iterator<\/span><<\/span>String<\/span>><\/span> iterator<\/span> =<\/span> properties<\/span>.<\/span>stringPropertyNames<\/span>().<\/span>iterator<\/span>();<\/span>\r\n\r\n        System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"\u300c\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30d1\u30c6\u30a3\u4e00\u89a7\u300d\"<\/span>);<\/span>\r\n        while<\/span> (<\/span>iterator<\/span>.<\/span>hasNext<\/span>())<\/span> {<\/span>\r\n            String<\/span> key<\/span> =<\/span> iterator<\/span>.<\/span>next<\/span>();<\/span>\r\n            System<\/span>.<\/span>out<\/span>.<\/span>print<\/span>(<\/span>key<\/span> +<\/span> \" = \"<\/span>);<\/span>\r\n\u3000\u3000\u3000\u3000\u3000\u3000\u3000<\/span>\/\/ getProperty(key)\u3067\u6307\u5b9a\u3055\u308c\u305f\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u3092\u8fd4\u3059\u3002<\/span>\r\n            System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>System<\/span>.<\/span>getProperty<\/span>(<\/span>key<\/span>));<\/span>\r\n        }<\/span>\r\n\r\n        final<\/span> String<\/span> LINEBREAKER<\/span> =<\/span> System<\/span>.<\/span>getProperty<\/span>(<\/span>\"line.separator\"<\/span>);<\/span>\r\n        System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"\u5168\u3066\u306eOS\u3067\u6539\u884c\"<\/span> +<\/span> LINEBREAKER<\/span> +<\/span> \"\u3055\u308c\u308b\u3088\u3002\"<\/span> );<\/span>\r\n    }<\/span>\r\n<\/code><\/pre>\n
\u4eca\u5929\u5c31\u5230\u8fd9\u91cc\u5427\u3002\u56e0\u4e3a\u6211\u8fd8\u6ca1\u6709\u7528\u4ee3\u7801\u6765\u4f53\u9a8c\u8fc7\u7cfb\u7edf\u5c5e\u6027\uff0c\u6240\u4ee5\u65e0\u6cd5\u771f\u6b63\u611f\u53d7\uff0c\u4f46\u662f\u4e86\u89e3\u5230\u4e86\u4e00\u4e2a\u80fd\u591f\u83b7\u53d6JVM\u4fe1\u606f\u7684\u7c7b\uff0c\u6211\u611f\u5230\u975e\u5e38\u9ad8\u5174\u3002<\/p>\n
\u8bf7\u6309\u7167\u6307\u5bfc\u601d\u60f3\u529e\u4e8b\u3002<\/h1>\n
    \n
  • \n
      https:\/\/docs.oracle.com\/javase\/jp\/8\/docs\/api\/java\/util\/Properties.html<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        https:\/\/docs.oracle.com\/javase\/jp\/8\/docs\/api\/java\/util\/Map.html<\/ul>\n","protected":false},"excerpt":{"rendered":"
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