{"id":170203,"date":"2024-11-06T22:00:25","date_gmt":"2024-11-06T14:00:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/170203\/"},"modified":"2024-11-06T22:00:26","modified_gmt":"2024-11-06T14:00:26","slug":"%e9%85%8d%e7%bd%aemysql%e6%95%b8%e6%93%9a%e6%ba%90%e5%9c%a8tomcat5%e4%b8%ad%e7%9a%84%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c%e6%b5%81%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/170203\/","title":{"rendered":"\u914d\u7f6eMySQL\u6578\u64da\u6e90\u5728Tomcat5\u4e2d\u7684\u5be6\u969b\u64cd\u4f5c\u6d41\u7a0b"},"content":{"rendered":"<h1 id=\"%e9%85%8d%e7%bd%aemysql%e6%95%b8%e6%93%9a%e6%ba%90%e5%9c%a8tomcat5%e4%b8%ad%e7%9a%84%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c%e6%b5%81%e7%a8%8b-lwzypMBecR\">\u914d\u7f6eMySQL\u6578\u64da\u6e90\u5728Tomcat5\u4e2d\u7684\u5be6\u969b\u64cd\u4f5c\u6d41\u7a0b<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u958b\u767c\u4e2d\uff0cJava 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id=\"%e6%ad%a5%e9%a9%9f%e4%b8%80%ef%bc%9a%e5%b0%87jdbc%e9%a9%85%e5%8b%95%e7%a8%8b%e5%ba%8f%e6%94%be%e5%85%a5tomcat%e7%9a%84lib%e7%9b%ae%e9%8c%84-lwzypMBecR\">\u6b65\u9a5f\u4e00\uff1a\u5c07JDBC\u9a45\u52d5\u7a0b\u5e8f\u653e\u5165Tomcat\u7684lib\u76ee\u9304<\/h2>\n<p>\u9996\u5148\uff0c\u5c07\u4e0b\u8f09\u7684MySQL JDBC\u9a45\u52d5\u7a0b\u5e8f\uff08.jar\u6587\u4ef6\uff09\u8907\u88fd\u5230Tomcat\u7684lib\u76ee\u9304\u4e2d\u3002\u901a\u5e38\uff0c\u8a72\u76ee\u9304\u4f4d\u65bc\uff1a<\/p>\n<pre><code>\/path\/to\/tomcat\/lib<\/code><\/pre>\n<h2 id=\"%e6%ad%a5%e9%a9%9f%e4%ba%8c%ef%bc%9a%e9%85%8d%e7%bd%ae%e6%95%b8%e6%93%9a%e6%ba%90-lwzypMBecR\">\u6b65\u9a5f\u4e8c\uff1a\u914d\u7f6e\u6578\u64da\u6e90<\/h2>\n<p>\u63a5\u4e0b\u4f86\uff0c\u60a8\u9700\u8981\u5728Tomcat\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u8a2d\u7f6e\u6578\u64da\u6e90\u3002\u9019\u901a\u5e38\u662f\u5728<code>context.xml<\/code>\u6587\u4ef6\u4e2d\u9032\u884c\u914d\u7f6e\u3002\u8a72\u6587\u4ef6\u4f4d\u65bc\uff1a<\/p>\n<pre><code>\/path\/to\/tomcat\/conf\/context.xml<\/code><\/pre>\n<p>\u5728<code>context.xml<\/code>\u4e2d\uff0c\u6dfb\u52a0\u4ee5\u4e0b\u5167\u5bb9\uff1a<\/p>\n<pre><code>\n\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u914d\u7f6e\u4e2d\uff0c\u60a8\u9700\u8981\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u66ff\u63db\u4ee5\u4e0b\u53c3\u6578\uff1a<\/p>\n<ul>\n<li><code>yourUsername<\/code>\uff1a\u60a8\u7684MySQL\u7528\u6236\u540d\u3002<\/li>\n<li><code>yourPassword<\/code>\uff1a\u60a8\u7684MySQL\u5bc6\u78bc\u3002<\/li>\n<li><code>yourDatabaseName<\/code>\uff1a\u60a8\u8981\u9023\u63a5\u7684\u6578\u64da\u5eab\u540d\u7a31\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%ad%a5%e9%a9%9f%e4%b8%89%ef%bc%9a%e5%9c%a8web%e6%87%89%e7%94%a8%e4%b8%ad%e4%bd%bf%e7%94%a8%e6%95%b8%e6%93%9a%e6%ba%90-lwzypMBecR\">\u6b65\u9a5f\u4e09\uff1a\u5728Web\u61c9\u7528\u4e2d\u4f7f\u7528\u6578\u64da\u6e90<\/h2>\n<p>\u5728\u60a8\u7684Java Web\u61c9\u7528\u4e2d\uff0c\u60a8\u53ef\u4ee5\u901a\u904eJNDI\u4f86\u7372\u53d6\u6578\u64da\u6e90\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nimport javax.naming.InitialContext;\nimport javax.naming.NamingException;\nimport javax.sql.DataSource;\nimport java.sql.Connection;\nimport java.sql.SQLException;\n\npublic class DatabaseUtil {\n    public static Connection getConnection() throws NamingException, SQLException {\n        InitialContext ctx = new InitialContext();\n        DataSource ds = (DataSource) ctx.lookup(\"java:comp\/env\/jdbc\/MySQLDB\");\n        return ds.getConnection();\n    }\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528JNDI\u67e5\u627e\u6578\u64da\u6e90\uff0c\u4e26\u7372\u53d6\u6578\u64da\u5eab\u9023\u63a5\u3002\u9019\u6a23\uff0c\u60a8\u5c31\u53ef\u4ee5\u5728\u61c9\u7528\u4e2d\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u4e86\u3002<\/p>\n<h2 id=\"%e6%ad%a5%e9%a9%9f%e5%9b%9b%ef%bc%9a%e6%b8%ac%e8%a9%a6%e6%95%b8%e6%93%9a%e6%ba%90%e9%85%8d%e7%bd%ae-lwzypMBecR\">\u6b65\u9a5f\u56db\uff1a\u6e2c\u8a66\u6578\u64da\u6e90\u914d\u7f6e<\/h2>\n<p>\u70ba\u4e86\u78ba\u4fdd\u6578\u64da\u6e90\u914d\u7f6e\u6b63\u78ba\uff0c\u60a8\u53ef\u4ee5\u7de8\u5beb\u4e00\u500b\u7c21\u55ae\u7684Servlet\u4f86\u6e2c\u8a66\u9023\u63a5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nimport java.io.IOException;\nimport java.io.PrintWriter;\nimport java.sql.Connection;\nimport java.sql.SQLException;\nimport javax.naming.NamingException;\nimport javax.servlet.ServletException;\nimport javax.servlet.http.HttpServlet;\nimport javax.servlet.http.HttpServletRequest;\nimport javax.servlet.http.HttpServletResponse;\n\npublic class TestDBServlet extends HttpServlet {\n    protected void doGet(HttpServletRequest request, HttpServletResponse response) \n            throws ServletException, IOException {\n        response.setContentType(\"text\/html\");\n        PrintWriter out = response.getWriter();\n        try {\n            Connection conn = DatabaseUtil.getConnection();\n            out.println(\"\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff01\");\n            conn.close();\n        } catch (SQLException | NamingException e) {\n            out.println(\"\u9023\u63a5\u6578\u64da\u5eab\u5931\u6557\uff1a\" + e.getMessage());\n        }\n    }\n}\n<\/code><\/pre>\n<p>\u5c07\u6b64Servlet\u90e8\u7f72\u5230Tomcat\u4e2d\uff0c\u7136\u5f8c\u901a\u904e\u700f\u89bd\u5668\u8a2a\u554f\u76f8\u61c9\u7684URL\u4f86\u6e2c\u8a66\u6578\u64da\u6e90\u914d\u7f6e\u662f\u5426\u6210\u529f\u3002<\/p>\n<h2 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