{"id":168691,"date":"2024-11-06T15:18:18","date_gmt":"2024-11-06T07:18:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168691\/"},"modified":"2024-11-06T15:18:19","modified_gmt":"2024-11-06T07:18:19","slug":"s-%e6%a1%86%e6%9e%b6%e4%b8%ad%e5%b1%ac%e6%80%a7%e6%96%87%e4%bb%b6%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%af%a6%e7%8f%be%e6%96%b9%e6%b3%95-s-%e4%b8%ad%e7%94%a8%e5%b1%ac%e6%80%a7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168691\/","title":{"rendered":"S \u6846\u67b6\u4e2d\u5c6c\u6027\u6587\u4ef6\u9023\u63a5\u6578\u64da\u5eab\u7684\u5be6\u73fe\u65b9\u6cd5 (s \u4e2d\u7528\u5c6c\u6027\u6587\u4ef6\u9023\u63a5\u6578\u64da\u5eab)"},"content":{"rendered":"

S \u6846\u67b6\u4e2d\u5c6c\u6027\u6587\u4ef6\u9023\u63a5\u6578\u64da\u5eab\u7684\u5be6\u73fe\u65b9\u6cd5<\/h1>\n

\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u9023\u63a5\u662f\u61c9\u7528\u7a0b\u5e8f\u904b\u884c\u7684\u6838\u5fc3\u90e8\u5206\u4e4b\u4e00\u3002\u7279\u5225\u662f\u5728\u4f7f\u7528 S \u6846\u67b6\uff08Spring \u6846\u67b6\uff09\u6642\uff0c\u901a\u904e\u5c6c\u6027\u6587\u4ef6\u4f86\u914d\u7f6e\u6578\u64da\u5eab\u9023\u63a5\u662f\u4e00\u7a2e\u5e38\u898b\u4e14\u6709\u6548\u7684\u65b9\u6cd5\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 S \u6846\u67b6\u4e2d\u4f7f\u7528\u5c6c\u6027\u6587\u4ef6\u4f86\u9023\u63a5\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u5177\u9ad4\u7684\u5be6\u73fe\u6b65\u9a5f\u548c\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n

1. \u5c6c\u6027\u6587\u4ef6\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

\u5c6c\u6027\u6587\u4ef6\u662f\u4e00\u7a2e\u7528\u65bc\u5b58\u5132\u914d\u7f6e\u4fe1\u606f\u7684\u6587\u4ef6\uff0c\u901a\u5e38\u4ee5\u9375\u503c\u5c0d\u7684\u5f62\u5f0f\u5b58\u5728\u3002\u5728 Java \u61c9\u7528\u7a0b\u5e8f\u4e2d\uff0c\u5c6c\u6027\u6587\u4ef6\u901a\u5e38\u4ee5 .properties \u70ba\u64f4\u5c55\u540d\u3002\u9019\u4e9b\u6587\u4ef6\u53ef\u4ee5\u7528\u4f86\u914d\u7f6e\u6578\u64da\u5eab\u9023\u63a5\u3001\u61c9\u7528\u7a0b\u5e8f\u53c3\u6578\u7b49\uff0c\u65b9\u4fbf\u958b\u767c\u8005\u5728\u4e0d\u4fee\u6539\u4ee3\u78bc\u7684\u60c5\u6cc1\u4e0b\u9032\u884c\u914d\u7f6e\u8b8a\u66f4\u3002<\/p>\n

2. \u914d\u7f6e\u5c6c\u6027\u6587\u4ef6<\/h2>\n

\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5275\u5efa\u4e00\u500b\u5c6c\u6027\u6587\u4ef6\u4f86\u5b58\u5132\u6578\u64da\u5eab\u7684\u9023\u63a5\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u540d\u70ba db.properties<\/code> \u7684\u793a\u4f8b\u6587\u4ef6\uff1a<\/p>\n

\n# db.properties\njdbc.driverClassName=com.mysql.cj.jdbc.Driver\njdbc.url=jdbc:mysql:\/\/localhost:3306\/mydatabase\njdbc.username=root\njdbc.password=password\n<\/pre>\n
\u5728\u9019\u500b\u6587\u4ef6\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u6578\u64da\u5eab\u7684\u9a45\u52d5\u985e\u3001URL\u3001\u7528\u6236\u540d\u548c\u5bc6\u78bc\u7b49\u4fe1\u606f\u3002<\/p>\n
3. \u5728 S \u6846\u67b6\u4e2d\u52a0\u8f09\u5c6c\u6027\u6587\u4ef6<\/h2>\n
\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u5728 S \u6846\u67b6\u4e2d\u52a0\u8f09\u9019\u500b\u5c6c\u6027\u6587\u4ef6\u3002\u53ef\u4ee5\u901a\u904e PropertyPlaceholderConfigurer<\/code> \u985e\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u914d\u7f6e\u7684\u793a\u4f8b\uff1a<\/p>\n
\n\n\n    \n        \n    \n\n\n<\/pre>\n
\u5728\u9019\u6bb5\u914d\u7f6e\u4e2d\uff0c\u6211\u5011\u544a\u8a34 S \u6846\u67b6\u5f9e\u985e\u8def\u5f91\u4e2d\u52a0\u8f09 db.properties<\/code> \u6587\u4ef6\u3002<\/p>\n
4. \u5275\u5efa\u6578\u64da\u6e90<\/h2>\n
\u4e00\u65e6\u5c6c\u6027\u6587\u4ef6\u88ab\u52a0\u8f09\uff0c\u6211\u5011\u5c31\u53ef\u4ee5\u4f7f\u7528\u9019\u4e9b\u914d\u7f6e\u4f86\u5275\u5efa\u6578\u64da\u6e90\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 DriverManagerDataSource<\/code> \u7684\u793a\u4f8b\uff1a<\/p>\n
\nimport org.springframework.beans.factory.annotation.Autowired;\nimport org.springframework.context.annotation.Bean;\nimport org.springframework.context.annotation.Configuration;\nimport org.springframework.jdbc.datasource.DriverManagerDataSource;\n\nimport javax.sql.DataSource;\n\n@Configuration\npublic class DataSourceConfig {\n\n    @Autowired\n    private Environment env;\n\n    @Bean\n    public DataSource dataSource() {\n        DriverManagerDataSource dataSource = new DriverManagerDataSource();\n        dataSource.setDriverClassName(env.getProperty(\"jdbc.driverClassName\"));\n        dataSource.setUrl(env.getProperty(\"jdbc.url\"));\n        dataSource.setUsername(env.getProperty(\"jdbc.username\"));\n        dataSource.setPassword(env.getProperty(\"jdbc.password\"));\n        return dataSource;\n    }\n}\n<\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 Environment<\/code> \u4f86\u7372\u53d6\u5c6c\u6027\u6587\u4ef6\u4e2d\u7684\u6578\u64da\u5eab\u9023\u63a5\u4fe1\u606f\uff0c\u4e26\u5275\u5efa\u4e00\u500b\u6578\u64da\u6e90\u3002<\/p>\n
5. \u4f7f\u7528\u6578\u64da\u6e90\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c<\/h2>\n
\u6700\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u5275\u5efa\u7684\u6578\u64da\u6e90\u4f86\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528 JdbcTemplate \u9032\u884c\u67e5\u8a62\uff1a<\/p>\n
\nimport org.springframework.beans.factory.annotation.Autowired;\nimport org.springframework.jdbc.core.JdbcTemplate;\nimport org.springframework.stereotype.Repository;\n\n@Repository\npublic class UserRepository {\n\n    @Autowired\n    private JdbcTemplate jdbcTemplate;\n\n    public String getUserNameById(int id) {\n        String sql = \"SELECT name FROM users WHERE id = ?\";\n        return jdbcTemplate.queryForObject(sql, new Object[]{id}, String.class);\n    }\n}\n<\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 JdbcTemplate<\/code> \u4f86\u57f7\u884c SQL \u67e5\u8a62\uff0c\u4e26\u7372\u53d6\u7528\u6236\u540d\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u901a\u904e\u4f7f\u7528\u5c6c\u6027\u6587\u4ef6\u4f86\u914d\u7f6e\u6578\u64da\u5eab\u9023\u63a5\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u61c9\u7528\u7a0b\u5e8f\u7684\u914d\u7f6e\u66f4\u52a0\u9748\u6d3b\u548c\u53ef\u7dad\u8b77\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u7c21\u5316\u4e86\u914d\u7f6e\u904e\u7a0b\uff0c\u9084\u63d0\u9ad8\u4e86\u4ee3\u78bc\u7684\u53ef\u8b80\u6027\u548c\u53ef\u91cd\u7528\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u9078\u64c7\u5408\u9069\u7684 VPS<\/a> \u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22 S \u6846\u67b6\u4e2d\u4f7f\u7528\u5c6c\u6027\u6587\u4ef6\u9023\u63a5\u6578\u64da\u5eab\u7684\u5be6\u73fe\u65b9\u6cd5\uff0c\u7c21\u5316\u914d\u7f6e\uff0c\u63d0\u5347\u958b\u767c\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-168691","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168691","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=168691"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168691\/revisions"}],"predecessor-version":[{"id":168692,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168691\/revisions\/168692"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=168691"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=168691"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=168691"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}