优化导出的费用清单和费用说明

src/main/java/dao/IPowerDao.java

@@ -6,4 +6,8 @@ import java.util.List;
 
 public interface IPowerDao {
     List<Power> selectAll();
+
+    void insertPower(Power power);
+
+    void deletePower(Power power);
 }

src/main/java/dao/IPowerDao.xml

@@ -5,4 +5,10 @@
     <select id="selectAll" resultType="beans.Power">
         select * from power
     </select>
+    <insert id="insertPower" useGeneratedKeys="true" keyProperty="id">
+        insert into power(name,price) values (#{name},#{price})
+    </insert>
+    <delete id="deletePower">
+        delete from power where id=#{id}
+    </delete>
 </mapper>
\ No newline at end of file

src/main/java/dao/ITravelDao.xml

@@ -10,14 +10,14 @@
     </select>
     <insert id="insertTravel">
         insert into budgetmanagementsystem.travel(name, price, food, traffic, accommodation)
-          values (#{dest},#{price},#{food},#{traffic},#{accommodation})
+          values (#{name},#{price},#{food},#{traffic},#{accommodation})
     </insert>
     <delete id="deleteTravel">
         delete from budgetmanagementsystem.travel where id=#{id}
     </delete>
     <update id="updateTravel">
         update budgetmanagementsystem.travel
-        set name=#{dest},price=#{price},food=#{food},traffic=#{traffic},accommodation=#{accommodation}
+        set name=#{name},price=#{price},food=#{food},traffic=#{traffic},accommodation=#{accommodation}
         where id=#{id}
     </update>
 </mapper>
\ No newline at end of file

src/main/java/handlers/DatabaseQueryHandler.java

@@ -103,6 +103,32 @@ public class DatabaseQueryHandler {
     }
 
     @Autowired
+    private IPowerDao powerDao;
+    @RequestMapping("/Power")
+    public void queryPower(HttpServletRequest request, HttpServletResponse response){
+        try {
+            response.setCharacterEncoding("utf-8");
+            response.setContentType("text/html;charset=utf-8");
+            PrintWriter writer = response.getWriter();
+            JSONObject object=new JSONObject();
+            List<Power> powers = powerDao.selectAll();
+            List<JSONObject> list=new LinkedList<>();
+            for (Power item : powers) {
+                JSONObject obj=new JSONObject();
+                obj.put("id",item.getId());
+                obj.put("name",item.getName());
+                obj.put("price",item.getPrice());
+                obj.put("nums",0);
+                list.add(obj);
+            }
+            object.put("data",list);
+            writer.write(JSON.toJSONString(object));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Autowired
     private ILabourDao labourDao;
     @RequestMapping("/Labour")
     public void queryLabour(HttpServletRequest request, HttpServletResponse response){