Update .gitignore and add files

back/blueprints/shi1.py

@@ -0,0 +1,34 @@
+from flask import Blueprint, jsonify
+import sqlite3
+from flask_cors import cross_origin
+
+bp = Blueprint('shi1', __name__)
+
+def get_db_connection():
+    conn = sqlite3.connect('agriculture.db')
+    conn.row_factory = sqlite3.Row
+    return conn
+
+@bp.route('/moisture', methods=['GET'])
+@cross_origin()
+def get_moisture_data():
+    conn = get_db_connection()
+    try:
+        cur = conn.cursor()
+        # 获取最近7条记录并按日期正序排列
+        cur.execute('''
+            SELECT record_date as date, moisture 
+            FROM (
+                SELECT record_date, moisture 
+                FROM soil_moisture 
+                ORDER BY id DESC 
+                LIMIT 7
+            ) 
+            ORDER BY date ASC
+        ''')
+        rows = cur.fetchall()
+        return jsonify([dict(row) for row in rows])
+    except Exception as e:
+        return jsonify({'error': str(e)}), 500
+    finally:
+        conn.close()