ThinkPHP轻松应对：Android图片上传全攻略

前端开发

1. 创建上传界面

首先，在Android项目中创建一个简单的上传界面。可以使用EditText和Button来实现。

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <EditText
        android:id="@+id/image_path"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入图片路径" />

    <Button
        android:id="@+id/upload_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="上传图片"
        android:layout_below="@id/image_path" />
</RelativeLayout>

2. 图片选择和上传

Button uploadButton = findViewById(R.id.upload_button);
uploadButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
        intent.setType("image/*");
        startActivityForResult(intent, 1);
    }
});

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == 1 && resultCode == RESULT_OK) {
        Uri uri = data.getData();
        String path = uri.getPath();
        uploadImage(path);
    }
}

private void uploadImage(String imagePath) {
    HttpURLConnection connection = null;
    try {
        URL url = new URL("http://yourserver.com/upload");
        connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("POST");
        connection.setRequestProperty("Content-Type", "multipart/form-data");
        connection.setDoOutput(true);

        OutputStream os = connection.getOutputStream();
        FileInputStream fis = new FileInputStream(imagePath);
        byte[] buffer = new byte[1024];
        int length;
        while ((length = fis.read(buffer)) != -1) {
            os.write(buffer, 0, length);
        }
        fis.close();
        os.close();

        if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
            // 图片上传成功
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (connection != null) {
            connection.disconnect();
        }
    }
}

后端开发

1. 创建ThinkPHP控制器

<?php
namespace app\index\controller;

use think\Controller;

class Upload extends Controller
{
    public function index()
    {
        // 获取上传的图片
        $file = request()->file('image');
        if ($file) {
            $info = $file->move('public/uploads');
            if ($info) {
                // 上传成功
                return json(['code' => 0, 'msg' => '上传成功', 'data' => ['path' => $info->getSaveName()]]);
            } else {
                // 上传失败
                return json(['code' => 1, 'msg' => $file->getError()]);
            }
        } else {
            // 没有上传的图片
            return json(['code' => 2, 'msg' => '没有上传的图片']);
        }
    }
}

2. 配置上传目录

3. 配置路由

在route/route.php文件中添加路由规则。

use think\facade\Route;

Route::post('upload', 'index/Upload/index');

总结