介绍了P2P 的概念和特点, 分析了P2P 搜索与传统搜索的不同之处, 并从结构角度出发剖析和比较了P2P 四种不同的搜索技 术, 给出了它们的优缺点。-Introduced the concept and characteristics of P2P, P2P search and analysis of the traditional difference between the search and from a structural point of view of the P2P