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

app显示

浏览器显示

本文来自:开源中国博客

感谢作者:oldfeel

查看原文:把 android 手机变成 web server (golang)

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