Question

我已经在Microsoft文档中上下搜索了一个cmdlet，该cmdlet返回一个包含接口默认网关的对象。我知道Get-NetIPConfiguration返回默认网关，但是它不返回供我使用的对象。有任何想法吗？

在这里编辑我正在运行的内容。我正在尝试自动更改nic的ip地址，为此，我需要nic的默认网关。

 import java.util.Comparator;
 public class MedalCount {
 String name;
 int goldMedals;
 int silverMedals;
 int bronzeMedals;
 int totalMedals;


/** 
 * Creates a new MedalCount instance.
 * @param name is the name of the nation
 * @param nGoldMedals is the number of gold medals
 * @param nSilverMedals is the number of silver medals
 * @param nBronzeMedals is the number of bronze medals
 */
public MedalCount(String name, int nGoldMedals, int nSilverMedals,
                  int nBronzeMedals) {
    this.name = name;
    this.goldMedals = nGoldMedals;
    this.silverMedals = nSilverMedals;
    this.bronzeMedals = nBronzeMedals;
    totalMedals = nGoldMedals + nSilverMedals + nBronzeMedals;
}

/** Return a string describing the medal count information for the country */
public String toString() {
    return name + ":\t" + goldMedals + ",\t" + silverMedals + ",\t" 
        + bronzeMedals + ",\t"+ totalMedals;
}

/** 
 * Compare instance of medal count with another. 
 * Nations compared based on number of total medals (descending order).
 */
// TODO: create comparator
public static final Comparator<MedalCount> COMPARATOR = new Comparator<MedalCount>() {
    @Override
    public int compare(MedalCount totalMedals1, MedalCount TotalMedals2) {
        if (totalMedals1.totalMedals >= totalMedals1.totalMedals) {
            return 1;
        } else
            return 0;


    }
}




/** Comparator for sorting by nation name alphabetically */
// TODO: create comparator


/** Comparator for sorting by gold medal count (descending order) */
// TODO: create comparator

Answer 1

在Powershell中，事情并不总是看起来一样。为了便于阅读，可以过滤屏幕上对象的显示。就像这里：

PS> Get-NetIPConfiguration -InterfaceIndex 8
InterfaceAlias       : Wi-Fi
InterfaceIndex       : 8
InterfaceDescription : Intel(R) Dual Band Wireless-AC 8265
NetProfile.Name      : xxxxxx
IPv4Address          : 10.0.0.26
IPv6DefaultGateway   :
IPv4DefaultGateway   : 10.0.0.251
DNSServer            : 10.0.0.251
                       212.54.35.25
                       212.54.40.25

似乎IPv4DefaultGateway只是一个包含IP地址的字符串。但这不是：

PS> (Get-NetIPConfiguration -InterfaceIndex 8).ipv4defaultgateway

ifIndex DestinationPrefix                              NextHop                                  RouteMetric ifMetric PolicyStore PSComputerName
------- -----------------                              -------                                  ----------- -------- ----------- --------------
8       0.0.0.0/0                                      10.0.0.251                                         0 45       ActiveStore

现在您可以看到IPv4DefaultGateway具有成员，而NextHop是包含网关的实际IP地址的成员。有时，您需要剥离对象以找出其中的内容。此处未使用，但是Get-Member在这些问题上可能会非常有帮助

所以您需要的代码是这样：

$ip =  Get-NetIPConfiguration -InterfaceIndex 17
New-NetIPAddress -IPAddress (New Ip address) -PrefixLength (Current Prefix length) -DefaultGateway $ip.IPv4DefaultGateway.NextHop

Powershell cmdlet返回一个对象，该对象包含接口的默认网关

1 个答案: