问题如图
1:写上了数据结构,可直接写,
2:要用stream 流实现
public void testTest(){
Map<String,String> objectObjectHashMap = new HashMap<>();
objectObjectHashMap.put("id","1");
objectObjectHashMap.put("contract_id","1");
objectObjectHashMap.put("repay_at","65");
objectObjectHashMap.put("plan_total_price","36");
Map<String,String> objectObjectHashMap1 = new HashMap<>();
objectObjectHashMap.put("id","6");
objectObjectHashMap.put("contract_id","1");
objectObjectHashMap.put("repay_at","98");
objectObjectHashMap.put("plan_total_price","54");
Map<String,String> objectObjectHashMap2 = new HashMap<>();
objectObjectHashMap.put("id","44");
objectObjectHashMap.put("contract_id","2");
objectObjectHashMap.put("repay_at","87");
objectObjectHashMap.put("plan_total_price","36");
Map<String,String> objectObjectHashMap3 = new HashMap<>();
objectObjectHashMap.put("id","8");
objectObjectHashMap.put("contract_id","2");
objectObjectHashMap.put("repay_at","35");
objectObjectHashMap.put("plan_total_price","21");
List<Map<String,String>> list = new ArrayList<>();
list.add(objectObjectHashMap);
list.add(objectObjectHashMap1);
list.add(objectObjectHashMap2);
list.add(objectObjectHashMap3);
}