40 lines
1.0 KiB
Go
40 lines
1.0 KiB
Go
package main
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import (
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"fmt"
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"github.com/lionsoul2014/ip2region/binding/golang/xdb"
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)
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func ip2region(ip string) (string, error) {
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var dbPath = "ip2region/ip2region.xdb"
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searcher, err := xdb.NewWithFileOnly(dbPath)
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if err != nil {
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fmt.Printf("failed to create searcher: %s\n", err.Error())
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}
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defer searcher.Close()
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// 备注：并发使用，每个 goroutine 需要创建一个独立的 searcher 对象。
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// 1、从 dbPath 加载整个 xdb 到内存
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cBuff, err := xdb.LoadContentFromFile(dbPath)
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if err != nil {
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fmt.Printf("failed to load content from `%s`: %s\n", dbPath, err)
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}
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// 2、用全局的 cBuff 创建完全基于内存的查询对象。
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searcher, err = xdb.NewWithBuffer(cBuff)
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if err != nil {
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fmt.Printf("failed to create searcher with content: %s\n", err)
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}
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region, err := searcher.SearchByStr(ip)
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if err != nil {
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fmt.Printf("failed to SearchIP(%s): %s\n", ip, err)
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}
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// 备注：并发使用，用整个 xdb 缓存创建的 searcher 对象可以安全用于并发。
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return region, err
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}
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