Java\u304c\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30af\u30a8\u30ea\u6a5f\u80fd\u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f\u3001JDBC\uff08Java \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\uff09\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a\u3057\u3001SQL\u30af\u30a8\u30ea\u6587\u3092\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n
1. **\u5fc5\u8981\u306a\u30af\u30e9\u30b9\u3068\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u30a4\u30f3\u30dd\u30fc\u30c8**
\n“`java
\nimport java.sql.Connection;
\nimport java.sql.DriverManager;
\nimport java.sql.ResultSet;
\nimport java.sql.SQLException;
\nimport java.sql.Statement;
\n“`
\n2. **\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u306e\u78ba\u7acb**
\n“`java
\nConnection conn = null;
\ntry {
\n\/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30c9\u30e9\u30a4\u30d0\u306e\u30ed\u30fc\u30c9
\nClass.forName(“com.mysql.jdbc.Driver”);<\/p>\n
\/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u306e\u78ba\u7acb
\nconn = DriverManager.getConnection(“jdbc:mysql:\/\/localhost:3306\/mydatabase”, “username”, “password”);
\n} catch (ClassNotFoundException e) {
\ne.printStackTrace();
\n} catch (SQLException e) {
\ne.printStackTrace();
\n}
\n“`
\n`mydatabase`\u306f\u63a5\u7d9a\u3059\u308b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u540d\u3001`username`\u3068`password`\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30ed\u30b0\u30a4\u30f3\u60c5\u5831\u306b\u7f6e\u304d\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
3. **\u30af\u30a8\u30ea\u306e\u5b9f\u884c**
\n“`java
\nStatement stmt = null;
\nResultSet rs = null;
\ntry {
\n\/\/ Statement\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4f5c\u6210
\nstmt = conn.createStatement();<\/p>\n
\/\/ \u30af\u30a8\u30ea\u306e\u767a\u884c
\nrs = stmt.executeQuery(“SELECT * FROM tablename”);<\/p>\n
\/\/ \u30af\u30a8\u30ea\u7d50\u679c\u306e\u51e6\u7406
\nwhile (rs.next()) {
\nint id = rs.getInt(“id”);
\nString name = rs.getString(“name”);
\n\/\/ \u305d\u306e\u4ed6\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3082\u540c\u69d8
\nSystem.out.println(“ID: ” + id + “, Name: ” + name);
\n}
\n} catch (SQLException e) {
\ne.printStackTrace();
\n} finally {
\n\/\/ ResultSet\u3001Statement\u3001Connection\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30af\u30ed\u30fc\u30ba
\ntry {
\nif (rs != null) {
\nrs.close();
\n}
\nif (stmt != null) {
\nstmt.close();
\n}
\nif (conn != null) {
\nconn.close();
\n}
\n} catch (SQLException e) {
\ne.printStackTrace();
\n}
\n}
\n“`
\n`tablename`\u306f\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3059\u308b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30c6\u30fc\u30d6\u30eb\u540d\u306b\u7f6e\u304d\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u3002\u30af\u30a8\u30ea\u7d50\u679c\u306e\u51e6\u7406\u306f\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5909\u66f4\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
\u3053\u308c\u306f\u5358\u7d14\u306a\u4f8b\u3067\u3042\u308a\u3001\u5177\u4f53\u7684\u306a\u8981\u4ef6\u306b\u5fdc\u3058\u3066\u3055\u3089\u306b\u8907\u96d1\u306a\u30af\u30a8\u30ea\u64cd\u4f5c\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u7406\u7531\u304b\u3089\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u60c5\u5831\uff08\u30e6\u30fc\u30b6\u30fc\u540d\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\u306a\u3069\uff09\u306f\u30b3\u30fc\u30c9\u306b\u76f4\u63a5\u8a18\u8ff0\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306b\u683c\u7d0d\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Java\u304c\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30af\u30a8\u30ea\u6a5f\u80fd\u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f\u3001JDBC\uff08Java \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\uff09\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a\u3057\u3001SQL\u30af\u30a8\u30ea\u6587\u3092\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002 1. **\u5fc5\u8981\u306a\u30af\u30e9\u30b9\u3068\u30d1 […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-128920","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n