{"id":986,"date":"2021-02-23T15:55:03","date_gmt":"2021-02-23T07:55:03","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/java\/?p=986"},"modified":"2021-03-19T13:13:39","modified_gmt":"2021-03-19T05:13:39","slug":"classloader-%e7%b1%bb%e5%8a%a0%e8%bd%bd%e5%99%a8","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/java\/post-986.html","title":{"rendered":"ClassLoader — \u7c7b\u52a0\u8f7d\u5668"},"content":{"rendered":"\n

\u7c7b\u52a0\u8f7d\u5668\uff0c\u53ef\u4ee5\u83b7\u53d6\u4efb\u610f\u7c7b\u7684\u52a0\u8f7d\u4fe1\u606f<\/p>\n\n\n\n

\u6b64\u7c7b\u7684\u5168\u9650\u5b9a\u7c7b\u540d\u662f java.lang.ClassLoader<\/a> \uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528<\/p>\n\n\n\n

1.\u6784\u9020\u65b9\u6cd5<\/h5>\n\n\n\n

\u901a\u5e38\u4e0d\u76f4\u63a5\u4f7f\u7528\u6784\u9020\u65b9\u6cd5\u83b7\u53d6 ClassLoader \u5bf9\u8c61<\/p>\n\n\n\n

\u53ef\u4ee5\u4f7f\u7528\u4efb\u610f\u7684 Class\uff0c\u83b7\u53d6 ClassLoader ,\uff08\u5047\u8bbe\u6709\u4e00\u4e2aMy.java\u6587\u4ef6)<\/p>\n\n\n\n

ClassLoader classLoader = My.class.getClassLoader();<\/code><\/pre>\n\n\n\n
2.\u65b9\u6cd5<\/h5>\n\n\n\n
1.\u83b7\u53d6\u8d44\u6e90<\/p>\n\n\n\n
URL url = classLoader.getResource(\"jdbc.properties\"); \/\/\u6307\u5b9a\u7684\u4f4d\u7f6e\n\/\/\u6b64\u65b9\u6cd5\u9ed8\u8ba4\u4ece\/\u5f00\u5934\uff0c\u5373classpath\u5f00\u5934,\u5bf9\u5e94\u666e\u901ajava\u5de5\u7a0b\u7684src\u76ee\u5f55\n\/\/\u5982\u679c\u662fclass.getResource(\"xxx\")\uff0c\u5219\u9ed8\u8ba4\u662f\u8be5class\u5f00\u5934<\/code><\/pre>\n\n\n\n
2.\u83b7\u53d6\u8d44\u6e90\u7684\u8f93\u51fa\u6d41<\/p>\n\n\n\n
InputStream is = classLoader.getResourceAsStream(\"my.properties\");\n\/\/\u6b64\u65b9\u6cd5\u9ed8\u8ba4\u4ece\/\u5f00\u5934\uff0c\u5373classpath\u5f00\u5934,\u5bf9\u5e94\u666e\u901ajava\u5de5\u7a0b\u7684src\u76ee\u5f55\n\/\/\u5982\u679c\u662fclass.getResourceAsStream(\"xxx\")\uff0c\u5219\u9ed8\u8ba4\u662f\u8be5class\u5f00\u5934<\/code><\/pre>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
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