u010034713的博客

java的map有putAll来合并两个map,但是只能做到第一层的合并,如果多层级就不行,使用递归做一个合并map简单方法to_map{ "a":"aaa", "b":"bbb", "c":{ "c1":"ccc1", "c2":{ "c11":"c1c1c1" }, "c3":"ccc3" }}from_map{ "b":"bbb_new", "c":{ "c1":"ccc1_new", "c3":{ "c11":"c1c1c1"