工厂模式中cpp代码Factory存在内存泄露问题

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注意积木工厂系统delete部分

class BlockFactorySystem {
private:
    std::vector<Block*> blocks;
 
public:
    void produceBlocks(BlockFactory* factory, int quantity) {
        for (int i = 0; i < quantity; i++) {
            Block* block = factory->createBlock();
            blocks.push_back(block);
            block->produce();
        }
    }
 
    const std::vector<Block*>& getBlocks() const {
        return blocks;
    }
 
    ~BlockFactorySystem() {
        // 释放所有动态分配的积木对象
        for (Block* block : blocks) {
            delete block;
        }
    }
};

我们发现积木工厂系统只对block进行了delete

接下来看main代码的new部分

int main() {
..
        if (blockType == "Circle") {
            factorySystem.produceBlocks(**new CircleBlockFactory()**, quantity);
        } else if (blockType == "Square") {
            factorySystem.produceBlocks(new SquareBlockFactory(), quantity);
        }
    }
...
}

发现main代码给factory分配了内存，但并没有对factory进行delete，导致了内存泄漏。