java 如何用java無(wú)限級(jí)樹(shù)形結(jié)構(gòu)的構(gòu)建？
如何用java無(wú)限級(jí)樹(shù)形結(jié)構(gòu)的構(gòu)建？編寫(xiě)遞歸gettreenodes（treenode parent，int parentid）{string SQL=“select*from trees”if（pa
如何用java無(wú)限級(jí)樹(shù)形結(jié)構(gòu)的構(gòu)建？
編寫(xiě)遞歸gettreenodes（treenode parent，int parentid）{string SQL=“select*from trees”if（parentid>0）{SQL=“where parentuid=”parentid}else{SQL=“where parentuid=0”}//創(chuàng)建每個(gè)子節(jié)點(diǎn)。創(chuàng)建后，遞歸其子節(jié)點(diǎn)}