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111 lines
3.0 KiB
Markdown
111 lines
3.0 KiB
Markdown
# ip2region nodejs 查询客户端实现
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## 使用方式
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### 完全基于文件的查询
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```javascript
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// 导入包
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const Searcher = require('.')
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// 指定ip2region数据文件路径
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const dbPath = 'ip2region.xdb file path'
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try {
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// 创建searcher对象
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const searcher = Searcher.newWithFileOnly(dbPath)
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// 查询
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const data = await searcher.search('218.4.167.70')
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// data: '中国|0|江苏省|苏州市|电信'
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} catch(e) {
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console.log(e)
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}
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```
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### 缓存 `VectorIndex` 索引
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```javascript
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// 导入包
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const Searcher = require('.')
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// 指定ip2region数据文件路径
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const dbPath = 'ip2region.xdb file path'
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try {
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// 同步读取vectorIndex
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const vectorIndex = Searcher.loadVectorIndexFromFile(dbPath)
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// 创建searcher对象
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const searcher = Searcher.newWithVectorIndex(dbPath, vectorIndex)
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// 查询 await 或 promise均可
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const data = await searcher.search('218.4.167.70')
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// data: '中国|0|江苏省|苏州市|电信'
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} catch(e) {
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console.log(e)
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}
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```
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### 缓存整个 `xdb` 数据
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```javascript
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// 导入包
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const Searcher = require('.')
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// 指定ip2region数据文件路径
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const dbPath = 'ip2region.xdb file path'
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try {
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// 同步读取buffer
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const buffer = Searcher.loadContentFromFile(dbPath)
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// 创建searcher对象
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const searcher = Searcher.newWithVectorIndex(buffer)
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// 查询 await 或 promise均可
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const data = await searcher.search('218.4.167.70')
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// data: '中国|0|江苏省|苏州市|电信'
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} catch(e) {
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console.log(e)
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}
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```
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## 查询测试
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可以通过 `java -jar ip2region-{version}.jar search` 命令来测试查询:
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```shell
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➜ java git:(v2.0_xdb) ✗ java -jar target/ip2region-2.6.0.jar search
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java -jar ip2region-{version}.jar search [command options]
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options:
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--db string ip2region binary xdb file path
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--cache-policy string cache policy: file/vectorIndex/content
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```
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例如:使用默认的 data/ip2region.xdb 文件进行查询测试:
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```shell
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➜ java git:(v2.0_xdb) ✗ java -jar target/ip2region-2.6.0.jar search --db=../../data/ip2region.xdb
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ip2region xdb searcher test program, cachePolicy: vectorIndex
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type 'quit' to exit
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ip2region>> 1.2.3.4
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{region: 美国|0|华盛顿|0|谷歌, ioCount: 7, took: 82 μs}
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ip2region>>
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```
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输入 ip 即可进行查询测试,也可以分别设置 `cache-policy` 为 file/vectorIndex/content 来测试三种不同缓存实现的查询效果。
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## bench 测试
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## 单元测试结果
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```shell
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ip2region
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✔ #newWithFileOnly
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✔ #newWithVectorIndex
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✔ #newWithBuffer
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3 passing (10ms)
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----------|---------|----------|---------|---------|----------------------------------
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File | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s
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----------|---------|----------|---------|---------|----------------------------------
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All files | 91.17 | 60.71 | 100 | 91.17 |
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index.js | 91.17 | 60.71 | 100 | 91.17 | 56,70,80,137,143,173,179,193,201
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----------|---------|----------|---------|---------|----------------------------------
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```
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