archieve: homework7 test1 test2

homework7/src/main/java/com/msksbr/homework7/domain/User.java

@@ -0,0 +1,58 @@
+/*
+ * @name: User.java
+ * @author: msksbr
+ * @date: 2025-05-26
+ * @version: 1.0
+ * @description: User class for homework 7
+ */
+package com.msksbr.homework7.domain;
+
+import java.util.Date;
+
+public class User {
+    private int id;
+    private String username;
+    private String password;
+    private String email;
+    private Date birthday;
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public Date getBirthday() {
+        return birthday;
+    }
+
+    public void setBirthday(Date birthday) {
+        this.birthday = birthday;
+    }
+}

homework7/src/main/java/com/msksbr/homework7/util/JDBCUtils.java

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+/*
+ * @name: JDBCUtils.java
+ * @author: msksbr
+ * @date: 2025-05-26
+ * @version: 1.0
+ * @description: JDBCUtils class for homework 7
+ */
+package com.msksbr.homework7.util;
+
+import org.yaml.snakeyaml.Yaml;
+
+import java.io.InputStream;
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.Statement;
+import java.util.Map;
+
+public class JDBCUtils {
+    private static final DBInfo dbInfo = new DBInfo();
+    private Connection connection;
+    private Statement statement;
+
+    public JDBCUtils() {
+        try {
+            Class.forName("com.mysql.cj.jdbc.Driver");
+            connection = java.sql.DriverManager.getConnection(dbInfo.getUrl(), dbInfo.username, dbInfo.password);
+            statement = connection.createStatement();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public ResultSet runQuery(String query) {
+        try {
+            return this.statement.executeQuery(query);
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    static class DBInfo {
+        String address;
+        String port;
+        String username;
+        String password;
+        String database;
+        String yaml_url = "/dbInfo.yaml";
+
+        public DBInfo() {
+            Map<String, String> dbInfo = loadYaml();
+            this.address = dbInfo.get("address");
+            this.port = dbInfo.get("port");
+            this.username = dbInfo.get("username");
+            this.password = dbInfo.get("password");
+            this.database = dbInfo.get("database");
+        }
+
+        public Map<String, String> loadYaml() {
+            Yaml yaml = new Yaml();
+            try (InputStream inputStream = DBInfo.class.getResourceAsStream(yaml_url)) {
+                if (inputStream == null) {
+                    throw new RuntimeException("YAML file not found" + yaml_url);
+                }
+                return yaml.load(inputStream);
+            } catch (Exception e) {
+                throw new RuntimeException("Failed to load YAML file", e);
+            }
+        }
+
+        public String getUrl() {
+            String url = "jdbc:mysql://" + this.address + ":" + this.port + "/" + this.database;
+            return url;
+        }
+    }
+}
+

homework7/src/main/resources/dbInfo sample.yaml

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+# this is a sample of yaml file for dbInfo.yaml
+# you can change the value of the key to your own value
+# 1. copy this file to the same directory as dbInfo.yaml
+# 2. change the value of the key to your own value
+address: "localhost"
+port: "3306"
+username: "root"
+password: "123456"
+database: "master"

homework7/src/test/java/testSQL.java

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+import com.msksbr.homework7.util.JDBCUtils;
+
+public class testSQL {
+    public static void main(String[] args) {
+        JDBCUtils jdbcUtils = new JDBCUtils();
+        String query = "SELECT * FROM users";
+        System.out.println(jdbcUtils.runQuery(query));
+    }
+}

test/jdbc/src/main/resources/com/msksbr/test/jdbc/dbInfo sample.yaml

@@ -2,7 +2,6 @@
 # you can change the value of the key to your own value
 # 1. copy this file to the same directory as dbInfo.yaml
 # 2. change the value of the key to your own value
-link:
 address: "localhost"
 port: 3306
 username: "root"