配置 golang 开发环境

略

安装并初始化 gomobile
go get golang.org/x/mobile/cmd/gomobile gomobile init
创建 beego 项目, 参考 ​​https://beego.me/quickstart​​ 
cd $GOPATH/src bee new androidweb # 创建 gomobile 文件 cd androidweb mkdir androidweb gedit androidweb.go

androidweb.go 的内容

package androidweb  import (  "androidweb/controllers"  _ "androidweb/routers"   "github.com/astaxie/beego" )  func Run(dir string) {  beego.Router("/", &controllers.MainController{})  beego.LoadAppConfig("ini", dir+"/conf/app.conf")  beego.SetStaticPath("/static", dir+"/static")  beego.BConfig.WebConfig.ViewsPath = dir + "/views"  beego.Run() }
生成 aar,
cd $GOPATH/src gomobile bind -target=android androidweb/androidweb/

成功的话,会在 $GOPATH/src 目录下创建一个 androidweb.aar 文件

创建 android 项目,并添加权限
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />      <uses-permission android:name="android.permission.INTERNET" />
将 beego 项目中的 conf static views 复制到 android 项目的 assets 中导入前面生成的 androidweb.aar 文件修改 MainActivity
import android.content.Context; import android.content.res.AssetManager; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.widget.TextView;  import java.io.BufferedReader; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream;  import androidweb.Androidweb;  public class MainActivity extends AppCompatActivity {      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);         ((TextView) findViewById(R.id.textView)).setText("启动成功..." + "\n" +                 "IP: " + getIpAddress() + "\n" +                 appConf());          copyFolder("conf");         copyFolder("static");         copyFolder("views");          new Thread() {             @Override             public void run() {                 super.run();                 Androidweb.run(getFilesDir().getAbsolutePath());             }         }.start();     }      private String appConf() {         BufferedReader reader = null;         StringBuilder sb = new StringBuilder();         try {             reader = new BufferedReader(new InputStreamReader(getAssets().open("conf/app.conf")));             // do reading, usually loop until end of file reading             String mLine;             while ((mLine = reader.readLine()) != null) {                 //process line                 sb.append(mLine + "\n");             }         } catch (IOException e) {             //log the exception         } finally {             if (reader != null) {                 try {                     reader.close();                 } catch (IOException e) {                     //log the exception                 }             }         }         return sb.toString();     }      private String getIpAddress() {         WifiManager wm = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);         if (wm.getWifiState() == WifiManager.WIFI_STATE_ENABLED) {             WifiInfo info = wm.getConnectionInfo();             int hostip = info.getIpAddress();             String ip = (hostip & 0xFF) + "." + ((hostip >> 8) & 0xFF) + "." + ((hostip >> 16) & 0xFF) + "." + ((hostip >> 24) & 0xFF);             return ip;         }         return null;     }      private void copyFolder(String path) {         AssetManager assetManager = getAssets();         InputStream in = null;         OutputStream out = null;          File dir = new File(getFilesDir() + "/" + path);         if (!dir.exists()) {             dir.mkdirs();         }         try {             String[] files = assetManager.list(path);             for (String filename : files) {                 in = assetManager.open(path + "/" + filename);                 File outFile = new File(dir, filename);                 out = new FileOutputStream(outFile);                 copyFile(in, out);             }         } catch (IOException e) {             e.printStackTrace();         } finally {             if (in != null) {                 try {                     in.close();                 } catch (IOException e) {                     e.printStackTrace();                 }             }             if (out != null) {                 try {                     out.close();                 } catch (IOException e) {                     e.printStackTrace();                 }             }         }     }      private void copyFile(InputStream in, OutputStream out) throws IOException {         byte[] buffer = new byte[1024];         int read;         while ((read = in.read(buffer)) != -1) {             out.write(buffer, 0, read);         }     } }
启动 android 程序即可