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怎么用Lambda表达式实现List<Map>的映射
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怎么用Lambda表达式实现List<Map>的映射
Map<String,Object> m1 = new HashMap<>();
m1.put("key","a");
m1.put("value",1);
Map<String,Object> m2 = new HashMap<>();
m2.put("key","b");
m2.put("value",2);
List<Map<String,Object>> list = new ArrayList<>();
list.add(m1);
list.add(m2);上面的list值是[{value=1, key=a}, {value=2, key=b}]
我想把这个list转换成[{a=1},{b=2}]，这样的一个List<Map<String,String>>集合，这里需要把上面的Map里面的value全部转成String类型，用Lambda该怎么实现
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