coderwhy深入Node.js技術(shù)棧
Aggregation.group分組匯總
1.1 初始化數(shù)據(jù)
?mongoTemplate.save(new Role("zhang1",5));
?mongoTemplate.save(new Role("zhang2",6));
?mongoTemplate.save(new Role("zhang3",12));
?mongoTemplate.save(new Role("zhang4",14));
?mongoTemplate.save(new Role("zhang5",23));
?mongoTemplate.save(new Role("zhang1",6));
標簽：
