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42 lines
1.4 KiB
42 lines
1.4 KiB
/**
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* 客户订单分析策略，分析每个客户的订单数量和消费总额
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*/
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package com.orderprocessing;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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public class CustomerOrderAnalysisStrategy implements OrderAnalysisStrategy {
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@Override
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public Map<String, Object> analyze(List<Order> orders) {
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Map<String, Object> results = new HashMap<>();
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Map<String, Integer> customerOrderCount = new HashMap<>();
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Map<String, Double> customerSpending = new HashMap<>();
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if (orders != null) {
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for (Order order : orders) {
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String customerName = order.getCustomerName();
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// 统计每个客户的订单数量
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customerOrderCount.put(customerName,
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customerOrderCount.getOrDefault(customerName, 0) + 1);
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// 统计每个客户的消费总额
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customerSpending.put(customerName,
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customerSpending.getOrDefault(customerName, 0.0) + order.getTotalAmount());
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}
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}
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results.put("customerOrderCount", customerOrderCount);
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results.put("customerSpending", customerSpending);
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results.put("uniqueCustomerCount", customerOrderCount.size());
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return results;
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}
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@Override
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public String getStrategyName() {
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return "客户订单分析";
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}
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} |