ADD file via upload

BaseApprover.java

@@ -0,0 +1,57 @@
+public abstract class BaseApprover implements Approver {
+    private String approverName;
+    private ApprovalLevel level;
+    private Logger logger;
+    
+    public BaseApprover(String approverName, ApprovalLevel level, Logger logger) {
+        this.approverName = approverName;
+        this.level = level;
+        this.logger = logger;
+    }
+    
+    @Override
+    public ApprovalLevel getRequiredLevel() {
+        return level;
+    }
+    
+    @Override
+    public String getApproverName() {
+        return approverName;
+    }
+    
+    protected Logger getLogger() {
+        return logger;
+    }
+    
+    protected abstract boolean canApprove(Order order);
+    
+    @Override
+    public boolean approve(Order order, ApprovalContext context) {
+        logger.info(getApproverName() + " 正在审批订单: " + order.getOrderId());
+        
+        if (!canApprove(order)) {
+            logger.warn(getApproverName() + " 拒绝审批订单: " + order.getOrderId());
+            context.addApprovalRecord(this, false, "不符合审批条件");
+            context.setCurrentStatus(ApprovalStatus.REJECTED);
+            context.setRejectionReason("不符合" + getApproverName() + "的审批条件");
+            return false;
+        }
+        
+        // 子类可以提供额外的审批逻辑
+        boolean approved = performApproval(order, context);
+        
+        if (approved) {
+            logger.info(getApproverName() + " 已批准订单: " + order.getOrderId());
+            context.addApprovalRecord(this, true, "审批通过");
+        } else {
+            logger.warn(getApproverName() + " 已拒绝订单: " + order.getOrderId());
+            context.addApprovalRecord(this, false, "审批拒绝");
+            context.setCurrentStatus(ApprovalStatus.REJECTED);
+            context.setRejectionReason(getApproverName() + "拒绝了订单");
+        }
+        
+        return approved;
+    }
+    
+    protected abstract boolean performApproval(Order order, ApprovalContext context);
+}