首页 > 编程学习 > geoip mysql_使用geoIP数据库解析IP到城市jsonRPC服务教程

### RESTful接口

**请求URL:**

- ` https://api.turboes.com/Tbsapi/v1/ip2addr?ip=219.140.227.235`

**请求方式:**

- GET

**参数:**

|参数名|类型|说明|

|:----- |:-----|----- |

|ip |url-qurey-string | `可选` 要查询的ip地址,如果不传这表示当前的ip |

**返回示例**

```

{

"code": 1,

"data": {

"Country": "中国",

"Province": "湖北省",

"City": "武汉",

"ISP": "",

"Latitude": 30.5801,

"Longitude": 114.2734,

"TimeZone": "Asia/Shanghai"

},

"ip": "219.140.227.235"

}

```

> json_rpc `tcp` 地址: `121.40.238.123`(IP地址更快) `api.turboes.com` 端口: `3344`

***

### 第三方资源

* [GeoIP2 Reader for Go](https://github.com/oschwald/geoip2-golang)

* [GeoLite2 开源数据库](https://dev.maxmind.com/zh-hans/geoip/geoip2/geolite2-%E5%BC%80%E6%BA%90%E6%95%B0%E6%8D%AE%E5%BA%93/)

### go标准库jsonRPC服务端

> Go官方提供了一个RPC库: net/rpc。包rpc提供了通过网络访问一个对象的方法的能力。服务器需要注册对象, 通过对象的类型名暴露这个服务。注册后这个对象的输出方法就可以远程调用,这个库封装了底层传输的细节,包括序列化。服务器可以注册多个不同类型的对象,但是注册相同类型的多个对象的时候回出错。

> * 方法的类型是可输出的 (the method's type is exported)

> * 方法本身也是可输出的 (the method is exported)

> * 方法必须由两个参数,必须是输出类型或者是内建类型 (the method has two arguments, both exported or builtin types)

> * 方法的第二个参数是指针类型 (the method's second argument is a pointer)

> * 方法返回类型为 error (the method has return type error)

```go

package main

import (

"fmt"

"github.com/oschwald/geoip2-golang"

"net"

"net/rpc"

"net/rpc/jsonrpc"

"os"

"log"

)

//返回值结构体

//需要满足以上要求

type Response struct {

Country string

Province string

City string

ISP string

Latitude float64

Longitude float64

TimeZone string

}

type Ip2addr struct {

db *geoip2.Reader

}

//参数结构体

//需要满足以上要求

type Agrs struct {

IpString string

}

//json rpc 处理请求

//需要满足以上要求

func (t *Ip2addr) Address(agr *Agrs, res *Response) error {

netIp := net.ParseIP(agr.IpString)

//调用开源geoIp 数据库查询ip地址

record, err := t.db.City(netIp)

res.City = record.City.Names["zh-CN"]

res.Province = record.Subdivisions[0].Names["zh-CN"]

res.Country = record.Country.Names["zh-CN"]

res.Latitude = record.Location.Latitude

res.Longitude = record.Location.Longitude

res.TimeZone = record.Location.TimeZone

return err

}

func main() {

//加载geoIp数据库

db, err := geoip2.Open("./GeoLite2-City.mmdb")

if err != nil {

log.Fatal(err)

}

//初始化jsonRPC

ip2addr := &Ip2addr{db}

//注册

rpc.Register(ip2addr)

//绑定端口

address := ":3344"

tcpAddr, err := net.ResolveTCPAddr("tcp", address)

checkError(err)

listener, err := net.ListenTCP("tcp", tcpAddr)

checkError(err)

log.Println("json rpc is listening",tcpAddr)

for {

conn, err := listener.Accept()

if err != nil {

continue

}

jsonrpc.ServeConn(conn)

}

}

func checkError(err error) {

if err != nil {

fmt.Println("Fatal error ", err.Error())

os.Exit(1)

}

}

```

### PHP-jsonRPC客户端

```go

class JsonRPC

{

public $conn;

function __construct($host, $port)

{

$this->conn = fsockopen($host, $port, $errno, $errstr, 3);

if (!$this->conn) {

return false;

}

}

public function Call($method, $params)

{

$obj = new stdClass();

$obj->code = 0;

if (!$this->conn) {

$obj->info = "jsonRPC连接失败!请联系qzhou@turboes.com";

return $obj;

}

$err = fwrite($this->conn, json_encode(array(

'method' => $method,

'params' => array($params),

'id' => 0,

)) . "\n");

if ($err === false) {

fclose($this->conn);

$obj->info = "jsonRPC发送参数失败!请检查自己的rpc-client代码";

return $obj;

}

stream_set_timeout($this->conn, 0, 3000);

$line = fgets($this->conn);

fclose($this->conn);

if ($line === false) {

$obj->info = "jsonRPC返回消息为空!请检查自己的rpc-client代码";

return $obj;

}

$temp = json_decode($line);

$obj->code = $temp->error == null ? 1 : 0;

$obj->data = $temp->result;

return $obj;

}

}

function json_rpc_ip_address($ipString)

{

$client = new JsonRPC("127.0.0.1", 3344);

$obj = $client->Call("Ip2addr.Address", ['IpString' => $ipString]);

return $obj;

}

```

### go语言jsonRPC客户端

```go

package main

import (

"fmt"

"log"

"net/rpc/jsonrpc"

)

type Response struct {

Country string

Province string

City string

ISP string

Latitude float64

Longitude float64

TimeZone string

}

type Agrs struct {

IpString string

}

func main() {

client, err := jsonrpc.Dial("tcp", "121.40.238.123:3344")

if err != nil {

log.Fatal("dialing:", err)

}

// Synchronous call

var res Response

err = client.Call("Ip2addr.Address", Agrs{"219.140.227.235"}, &res)

if err != nil {

log.Fatal("ip2addr error:", err)

}

fmt.Println(res)

}

```

### [代码地址](https://github.com/mojocn/ip2location/tree/master/example)

### [欢迎pr/star golang-captcha](https://github.com/mojocn/base64Captcha)

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