- 首先添加依赖和权限
依赖：
implementation 'com.android.support:design:27.1.1' //防止版本错误
implementation 'com.github.bumptech.glide:glide:3.8.0' //解析图片（glide图片加载框架）
implementation 'com.squareup.picasso:picasso:2.3.2' //解析图片
implementation 'com.squareup.okhttp3:okhttp:3.10.0'//okhttp3
implementation 'com.google.code.gson:gson:2.2.4'//gson
权限：
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.INTERNET"/>
- 2.在activity_main.xml文件中写布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<Button
android:id="@+id/btn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="上传文件" />
<TextView
android:id="@+id/text"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<ImageView
android:id="@+id/img"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
- 3.在MainActivity.java 文件中实现效果
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
/**
* 上传文件
*/
private Button mBtn;
private TextView mText;
private ImageView mImg;
private File mFile;
private String url = "http://yun918.cn/study/public/file_upload.php";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
}
private void initView() {
mBtn = (Button) findViewById(R.id.btn);
mBtn.setOnClickListener(this);
mText = (TextView) findViewById(R.id.text);
mImg = (ImageView) findViewById(R.id.img);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
default:
break;
case R.id.btn:
initData();
break;
}
}
private void initData() {
// 判断是否有写入数据的权限
if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)
== PackageManager.PERMISSION_GRANTED) {
uploadFile();
} else {
// 获取（请求）权限
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission
.WRITE_EXTERNAL_STORAGE}, 1);
}
}
/**
* 请求结果
* @param requestCode
* @param permissions
* @param grantResults
*/
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
@NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
// 用户是否获取权限
if (requestCode == 1 && grantResults.length > 0 && grantResults[0] == PackageManager
.PERMISSION_GRANTED) {
uploadFile();
} else {
Toast.makeText(this, "授权失败", Toast.LENGTH_SHORT).show();
}
}
private void uploadFile() {
// 获取要上传的文件
mFile = new File("/storage/sdcard0/Pictures/text.jpg");
/* if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
File directory = Environment.getExternalStorageDirectory();
mFile = new File(directory, "text.jpg");
}*/
OkHttpClient client = new OkHttpClient.Builder()
.build();
// 设置文件以及文件上传类型封装
RequestBody requestBody = RequestBody.create(MediaType.parse("image/jpg"), mFile);
// 文件上传的请求体封装
MultipartBody multipartBody = new MultipartBody.Builder()
.setType(MultipartBody.FORM)
.addFormDataPart("key", "H1808C")
.addFormDataPart("file", mFile.getName(), requestBody)
.build();
Request request = new Request.Builder()
.url("http://yun918.cn/study/public/file_upload.php")
.post(multipartBody)
.build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(MainActivity.this, e.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
@Override
public void onResponse(Call call, Response response) throws IOException {
final String result = response.body().string();
Gson gson = new Gson();
final UpLoadBean upLoadBean = gson.fromJson(result, UpLoadBean.class);
runOnUiThread(new Runnable() {
@Override
public void run() {
if (upLoadBean != null) {
if (upLoadBean.getCode() == 200) {
mText.setText(upLoadBean.getRes());
Glide.with(MainActivity.this).load(upLoadBean.getData().getUrl()).into(mImg);
} else {
mText.setText(upLoadBean.getRes());
}
} else {
Toast.makeText(MainActivity.this, "失败", Toast.LENGTH_SHORT).show();
}
}
});
}
});
}
}
- 4.bean文件夹下的实体类
public class UpLoadBean {
/**
* code : 200
* res : 上传文件成功
* data : {"url":"http://yun918.cn/study/public/uploadfiles/abc/b.jpg"}
*/
private int code;
private String res;
private DataBean data;
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
public String getRes() {
return res;
}
public void setRes(String res) {
this.res = res;
}
public DataBean getData() {
return data;
}
public void setData(DataBean data) {
this.data = data;
}
public static class DataBean {
/**
* url : http://yun918.cn/study/public/uploadfiles/abc/b.jpg
*/
private String url;
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
}
}
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