{"id":62067,"date":"2024-10-13T15:54:15","date_gmt":"2024-10-13T07:54:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62067\/"},"modified":"2024-10-13T15:54:15","modified_gmt":"2024-10-13T07:54:15","slug":"java%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e5%af%a6%e7%94%a8%e6%8a%80%e5%b7%a7%ef%bc%9a%e5%b0%8e%e8%88%aa%e6%ac%84%e4%b8%8a%e5%82%b3%e5%8a%9f%e8%83%bd%e8%a9%b3%e8%a7%a3-java%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62067\/","title":{"rendered":"Java\u6578\u64da\u5eab\u64cd\u4f5c\u5be6\u7528\u6280\u5de7\uff1a\u5c0e\u822a\u6b04\u4e0a\u50b3\u529f\u80fd\u8a73\u89e3 (java\u6578\u64da\u5eab\u5c0e\u822a\u6b04\u4e0a\u50b3)"},"content":{"rendered":"<h1 id=\"java%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e5%af%a6%e7%94%a8%e6%8a%80%e5%b7%a7%ef%bc%9a%e5%b0%8e%e8%88%aa%e6%ac%84%e4%b8%8a%e5%82%b3%e5%8a%9f%e8%83%bd%e8%a9%b3%e8%a7%a3-GLadwKVJsQ\">Java\u6578\u64da\u5eab\u64cd\u4f5c\u5be6\u7528\u6280\u5de7\uff1a\u5c0e\u822a\u6b04\u4e0a\u50b3\u529f\u80fd\u8a73\u89e3<\/h1>\n<p>\u5728\u73fe\u4eca\u7684\u7db2\u9801\u61c9\u7528\u7a0b\u5f0f\u4e2d\uff0c\u6578\u64da\u5eab\u64cd\u4f5c\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u7279\u5225\u662f\u5728\u4f7f\u7528Java\u9032\u884c\u958b\u767c\u6642\uff0c\u5982\u4f55\u6709\u6548\u5730\u5be6\u73fe\u6578\u64da\u5eab\u7684\u64cd\u4f5c\uff0c\u5c24\u5176\u662f\u5c0e\u822a\u6b04\u7684\u4e0a\u50b3\u529f\u80fd\uff0c\u6210\u70ba\u4e86\u8a31\u591a\u958b\u767c\u8005\u9700\u8981\u9762\u5c0d\u7684\u6311\u6230\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eJava\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u5be6\u7528\u6280\u5de7\uff0c\u4e26\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u5be6\u73fe\u5c0e\u822a\u6b04\u7684\u4e0a\u50b3\u529f\u80fd\u3002<\/p>\n<h2 id=\"1-%e7%90%86%e8%a7%a3%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-GLadwKVJsQ\">1. \u7406\u89e3\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u6211\u5011\u9700\u8981\u4e86\u89e3\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u57fa\u672c\u6982\u5ff5\u3002Java\u901a\u5e38\u4f7f\u7528JDBC\uff08Java Database Connectivity\uff09\u4f86\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002JDBC\u63d0\u4f9b\u4e86\u4e00\u7d44API\uff0c\u5141\u8a31Java\u61c9\u7528\u7a0b\u5f0f\u9023\u63a5\u5230\u5404\u7a2e\u6578\u64da\u5eab\uff0c\u57f7\u884cSQL\u67e5\u8a62\uff0c\u4e26\u8655\u7406\u7d50\u679c\u96c6\u3002<\/p>\n<h2 id=\"2-%e8%a8%ad%e7%bd%aejdbc%e7%92%b0%e5%a2%83-GLadwKVJsQ\">2. \u8a2d\u7f6eJDBC\u74b0\u5883<\/h2>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u5df2\u7d93\u5728\u60a8\u7684Java\u9805\u76ee\u4e2d\u6dfb\u52a0\u4e86JDBC\u9a45\u52d5\u7a0b\u5e8f\u3002\u4ee5\u4e0b\u662f\u8a2d\u7f6eJDBC\u74b0\u5883\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li>\u4e0b\u8f09\u76f8\u61c9\u7684JDBC\u9a45\u52d5\u7a0b\u5e8f\uff08\u4f8b\u5982MySQL\u7684Connector\/J\uff09\u3002<\/li>\n<li>\u5c07\u9a45\u52d5\u7a0b\u5e8f\u7684JAR\u6587\u4ef6\u6dfb\u52a0\u5230\u60a8\u7684\u9805\u76ee\u4e2d\u3002<\/li>\n<li>\u5728\u4ee3\u78bc\u4e2d\u52a0\u8f09\u9a45\u52d5\u7a0b\u5e8f\uff1a<\/li>\n<\/ul>\n<pre><code>Class.forName(\"com.mysql.cj.jdbc.Driver\");<\/code><\/pre>\n<h2 id=\"3-%e5%af%a6%e7%8f%be%e5%b0%8e%e8%88%aa%e6%ac%84%e4%b8%8a%e5%82%b3%e5%8a%9f%e8%83%bd-GLadwKVJsQ\">3. \u5be6\u73fe\u5c0e\u822a\u6b04\u4e0a\u50b3\u529f\u80fd<\/h2>\n<p>\u5c0e\u822a\u6b04\u7684\u4e0a\u50b3\u529f\u80fd\u901a\u5e38\u6d89\u53ca\u5230\u6587\u4ef6\u7684\u4e0a\u50b3\u548c\u6578\u64da\u7684\u5b58\u5132\u3002\u4ee5\u4e0b\u662f\u5be6\u73fe\u9019\u4e00\u529f\u80fd\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"3-1-%e5%89%b5%e5%bb%bahtml%e8%a1%a8%e5%96%ae-GLadwKVJsQ\">3.1 \u5275\u5efaHTML\u8868\u55ae<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u5275\u5efa\u4e00\u500bHTML\u8868\u55ae\uff0c\u8b93\u7528\u6236\u53ef\u4ee5\u9078\u64c7\u8981\u4e0a\u50b3\u7684\u6587\u4ef6\uff1a<\/p>\n<pre><code>&lt;form action=\"upload\" method=\"post\" enctype=\"multipart\/form-data\"&gt;\n    &lt;input type=\"file\" name=\"file\"&gt;\n    &lt;input type=\"submit\" value=\"\u4e0a\u50b3\"&gt;\n&lt;\/form&gt;<\/code><\/pre>\n<h3 id=\"3-2-%e8%99%95%e7%90%86%e6%96%87%e4%bb%b6%e4%b8%8a%e5%82%b3-GLadwKVJsQ\">3.2 \u8655\u7406\u6587\u4ef6\u4e0a\u50b3<\/h3>\n<p>\u5728Java\u5f8c\u7aef\uff0c\u60a8\u9700\u8981\u8655\u7406\u6587\u4ef6\u7684\u4e0a\u50b3\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Servlet\u793a\u4f8b\uff1a<\/p>\n<pre><code>import java.io.*;\nimport javax.servlet.*;\nimport javax.servlet.http.*;\n\npublic class FileUploadServlet extends HttpServlet {\n    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {\n        Part filePart = request.getPart(\"file\");\n        String fileName = filePart.getSubmittedFileName();\n        InputStream fileContent = filePart.getInputStream();\n        \n        \/\/ \u5c07\u6587\u4ef6\u5167\u5bb9\u5b58\u5132\u5230\u6578\u64da\u5eab\n        \/\/ \u9019\u88e1\u53ef\u4ee5\u4f7f\u7528JDBC\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\n    }\n}<\/code><\/pre>\n<h3 id=\"3-3-%e5%b0%87%e6%96%87%e4%bb%b6%e5%ad%98%e5%84%b2%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab-GLadwKVJsQ\">3.3 \u5c07\u6587\u4ef6\u5b58\u5132\u5230\u6578\u64da\u5eab<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u60a8\u9700\u8981\u5c07\u4e0a\u50b3\u7684\u6587\u4ef6\u5b58\u5132\u5230\u6578\u64da\u5eab\u4e2d\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528JDBC\u5c07\u6587\u4ef6\u5b58\u5132\u5230MySQL\u6578\u64da\u5eab\uff1a<\/p>\n<pre><code>Connection conn = DriverManager.getConnection(\"jdbc:mysql:\/\/localhost:3306\/yourdb\", \"username\", \"password\");\nString sql = \"INSERT INTO files (name, data) VALUES (?, ?)\";\nPreparedStatement statement = conn.prepareStatement(sql);\nstatement.setString(1, fileName);\nstatement.setBlob(2, fileContent);\nstatement.executeUpdate();\n<\/code><\/pre>\n<h2 id=\"4-%e7%b8%bd%e7%b5%90-GLadwKVJsQ\">4. \u7e3d\u7d50<\/h2>\n<p>\u672c\u6587\u4ecb\u7d39\u4e86Java\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u57fa\u672c\u6982\u5ff5\uff0c\u4e26\u8a73\u7d30\u8aaa\u660e\u4e86\u5982\u4f55\u5be6\u73fe\u5c0e\u822a\u6b04\u7684\u4e0a\u50b3\u529f\u80fd\u3002\u901a\u904e\u8a2d\u7f6eJDBC\u74b0\u5883\u3001\u5275\u5efaHTML\u8868\u55ae\u3001\u8655\u7406\u6587\u4ef6\u4e0a\u50b3\u4ee5\u53ca\u5c07\u6587\u4ef6\u5b58\u5132\u5230\u6578\u64da\u5eab\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u5be6\u73fe\u9019\u4e00\u529f\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u4f3a\u670d\u5668\u74b0\u5883\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Java\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u5be6\u7528\u6280\u5de7\uff0c\u6df1\u5165\u4e86\u89e3\u5c0e\u822a\u6b04\u4e0a\u50b3\u529f\u80fd\u7684\u8a73\u7d30\u5be6\u73fe\u8207\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-62067","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62067","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=62067"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62067\/revisions"}],"predecessor-version":[{"id":62068,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62067\/revisions\/62068"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=62067"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=62067"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=62067"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}