使用 IP 地址范圍 (JavaScript) 過濾 JSON

Question

我有一個 JSON 文件，其中每個 JSON 對象都有一個唯一標識符（ IP 地址）

當給定一個 IP 地址范圍時，我想根據給定的范圍過濾原始 JSON 並將其存儲在一個新文件中。 （即所有 JSON 對象的 IP 地址都在給定范圍內）

JSON 文件：

[{
    "Name": "SERVER1",
    "ipv4Address": "192.168.0.50",
    "OperatingSystem": [],
    "OperatingSystemServicePack": null,
    "OperatingSystemVersion": "6.3 (9600)"
},
{
    "Name": "SERVER2",
    "ipv4Address": "192.168.0.51",
    "OperatingSystem": [],
    "OperatingSystemServicePack": null,
    "OperatingSystemVersion": "6.3 (9600)"
},
{
    "Name": "SERVER3",
    "ipv4Address": "192.168.0.52",
    "OperatingSystem": [],
    "OperatingSystemServicePack": null,
    "OperatingSystemVersion": "6.3 (9600)"
},
{
    "Name": "SERVER4",
    "ipv4Address": "192.168.0.53",
    "OperatingSystem": [],
    "OperatingSystemServicePack": null,
    "OperatingSystemVersion": "6.3 (9600)"
},
{
    "Name": "SERVER5",
    "ipv4Address": "192.168.0.54",
    "OperatingSystem": [],
    "OperatingSystemServicePack": null,
    "OperatingSystemVersion": "6.3 (9600)"
}]

如果給定范圍是 192.168.0.52 - 192.168.0.54，則輸出應為：

 [{
    "Name": "SERVER3",
    "ipv4Address": "192.168.0.52",
    "OperatingSystem": [],
    "OperatingSystemServicePack": null,
    "OperatingSystemVersion": "6.3 (9600)"
},
{
    "Name": "SERVER4",
    "ipv4Address": "192.168.0.53",
    "OperatingSystem": [],
    "OperatingSystemServicePack": null,
    "OperatingSystemVersion": "6.3 (9600)"
},
{
    "Name": "SERVER5",
    "ipv4Address": "192.168.0.54",
    "OperatingSystem": [],
    "OperatingSystemServicePack": null,
    "OperatingSystemVersion": "6.3 (9600)"
}]

Answer 1

使用下面的代碼片段。

 function isWithinRange(ip, lowerBound, upperBound) { // Put all IPs into one array for iterating and split all into their own // array of segments var ips = [ip.split('.'), lowerBound.split('.'), upperBound.split('.')]; // Convert all IPs to ints for(var i = 0; i < ips.length; i++) { // Typecast all segments of all ips to ints for(var j = 0; j < ips[i].length; j++) { ips[i][j] = parseInt(ips[i][j]); } // Bit shift each segment to make it easier to compare ips[i] = (ips[i][0] << 24) + (ips[i][1] << 16) + (ips[i][2] << 8) + (ips[i][3]); } // Do comparisons if(ips[0] >= ips[1] && ips[0] <= ips[2]) return true; return false; } var json = [{ "Name": "SERVER1", "ipv4Address": "192.168.0.50", "OperatingSystem": [], "OperatingSystemServicePack": null, "OperatingSystemVersion": "6.3 (9600)" }, { "Name": "SERVER2", "ipv4Address": "192.168.0.51", "OperatingSystem": [], "OperatingSystemServicePack": null, "OperatingSystemVersion": "6.3 (9600)" }, { "Name": "SERVER3", "ipv4Address": "192.168.0.52", "OperatingSystem": [], "OperatingSystemServicePack": null, "OperatingSystemVersion": "6.3 (9600)" }, { "Name": "SERVER4", "ipv4Address": "192.168.0.53", "OperatingSystem": [], "OperatingSystemServicePack": null, "OperatingSystemVersion": "6.3 (9600)" }, { "Name": "SERVER5", "ipv4Address": "192.168.0.54", "OperatingSystem": [], "OperatingSystemServicePack": null, "OperatingSystemVersion": "6.3 (9600)" }]; var newArr = []; var lowerBound = '192.168.0.52'; var upperBound = '192.168.0.54'; json.forEach(function(item){ var isInRange = isWithinRange(item.ipv4Address, lowerBound, upperBound); if(isInRange){ newArr.push(item); } }); console.log("new Array : ", newArr);

我使用@SaltedBlowfish 提供的解決方案，使用他的Bit Shifting公式

參考： https : //stackoverflow.com/a/29173281/4882013