如何从嵌套数组中提取数据?
我想提取数组项"值",其中wind_speed参数值介于vitRange.min和vitRange.max之间(twaRange和wind direction的条件相同)
数据:
{
"name" : "race"
,"polaire" : [
{
"voile" : "foc"
, "matrice" :[
{
"vitRange" : { "min" : 0, "max" : 4}
,"twaRange" : { "min" : 0, "max" : 30}
,"values" : [0, 0, 0, 2.4]
},
{
"vitRange" : { "min" : 4, "max" : 6}
,"twaRange" : { "min" : 30, "max" : 33}
,"values" : [0, 0, 2.4, 3.7]
}
]
},
{
"voile" : "spi"
, "matrice" :[
{ …Run Code Online (Sandbox Code Playgroud) mongodb aggregation-framework spring-data-mongodb spring-boot
我需要将 Spring Cloud 服务器连接到我的私有 github 存储库。我收到错误“原因:属性‘spring.cloud.config.server.git.privateKey’不是有效的私钥”
脚步:
spring:
cloud:
config:
server:
git:
uri: git@github.com:[repository]/config-repo.git
searchPaths: '{application}'
hostKey: someHostKey
hostKeyAlgorithm: ssh-rsa
ignoreLocalSshSettings: true
privateKey: |
-----BEGIN RSA PRIVATE KEY-----
[...]
-----END RSA PRIVATE KEY-----
Run Code Online (Sandbox Code Playgroud)
你能帮我启动我的服务器吗?多谢
我需要你的建议来简化下面的代码.我有一个玩家列表,其中包含赢得的游戏ID.我想从这个列表中提取2个最佳玩家(2个拥有更好匹配ID的玩家)一旦被提取,我必须返回初始列表以进行其他操作.我认为可以在优化或阅读方面改进此代码.如果你能帮助我.
public class PlayerStatistics {
int id
String name;
int idMatchWon; // key from Match
// getter , setter
}
public static void main(String[] args) throws Exception {
List<PlayerStatistics> _players = new ArrayList<PlayerStatistics>();
_players.add(initialize(1,'John',4));
_players.add(initialize(2,'Teddy',2));
_players.add(initialize(3,'Kevin',3));
// How to get Top 2
List<PlayerStatistics> _top2Players = extractTop2Players(_players);
}
private List<PlayerStatistics> extractTop2Players (List<PlayerStatistics> _list) {
List<PlayerStatistics> _topPlayers = new ArrayList<PlayerStatistics>();
// 1. Group and count
Map<String, Long> _players = _list
.stream()
.filter(x -> (!"".equals(x.getName()) && x.getName()!= null) )
.collect(
Collectors.groupingBy(
PlayerStatistics::getName, Collectors.counting() …Run Code Online (Sandbox Code Playgroud)