向数据库写入数据

src/chapter10/Example02.java

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+package chapter10;
+
+import java.sql.Connection;
+import java.sql.Statement;
+import java.sql.DriverManager;
+
+public class Example02 {
+    public static void main(String[] args) {
+        try {
+            // 1. 加载驱动
+            Class.forName("com.mysql.cj.jdbc.Driver");
+
+            // 2. 准备连接参数
+            String url = "jdbc:mysql://localhost:3306/school?characterEncoding=utf-8&useSSL=false&serverTimezone=UTC";
+            String username = "root";
+            String password = "root";
+
+            // 使用try-with-resources自动关闭资源
+            try (
+                    Connection connection = DriverManager.getConnection(url, username, password);
+                    Statement statement = connection.createStatement()
+            ) {
+                // 准备INSERT语句
+                String sql = "INSERT INTO student (name, age, gender, class, score) " +
+                        "VALUES ('小张', 19, 'M', '计算机1班', 88.5)";
+
+                // 执行INSERT语句
+                int rows = statement.executeUpdate(sql);
+
+                // 输出受影响的行数
+                System.out.println("成功插入 " + rows + " 条数据");
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}