上传图片

来源：互联网发布：移动网络e是什么意思编辑：程序博客网时间：2024/05/15 08:20

上传图片的方法首先在OKhttp中封装好，和get、post请求一样，直接调用方法就行了

package bwie.com.day10_1510d.net;import android.util.Log;import java.io.File;import java.util.Map;import okhttp3.Callback;import okhttp3.FormBody;import okhttp3.MediaType;import okhttp3.MultipartBody;import okhttp3.OkHttpClient;import okhttp3.Request;import okhttp3.RequestBody;import okhttp3.logging.HttpLoggingInterceptor;/** * Created by peng on 2017/12/1. */public class OkHttpUtils {    private static OkHttpUtils okHttpUtils;    private final OkHttpClient client;    private OkHttpUtils() {        HttpLoggingInterceptor logging = new HttpLoggingInterceptor();        logging.setLevel(HttpLoggingInterceptor.Level.BODY);        client = new OkHttpClient.Builder()                .addInterceptor(logging)                .build();    }    public static OkHttpUtils getOkHttpUtils() {        if (okHttpUtils == null) {            synchronized (OkHttpUtils.class) {                if (okHttpUtils == null) {                    okHttpUtils = new OkHttpUtils();                }            }        }        return okHttpUtils;    }    /**     * GET请求     *     * @param url     * @param callback     */    public void doGet(String url, Callback callback) {        Request request = new Request.Builder().url(url).build();        client.newCall(request).enqueue(callback);    }    /**     * POST请求     *     * @param url     * @param params     * @param callback     */    public void doPost(String url, Map<String, String> params, Callback callback) {        if (params == null) {            throw new RuntimeException("参数为空了");        }        FormBody.Builder builder = new FormBody.Builder();        for (Map.Entry<String, String> entry : params.entrySet()) {            builder.add(entry.getKey(), entry.getValue());        }        Log.e("OkHttpUtils", "请求地址：" + url + " 请求的参数：");        FormBody formBody = builder.build();        Request request = new Request.Builder().url(url).post(formBody).build();        client.newCall(request).enqueue(callback);    }    public void uploadFile(String url, Map<String, Object> params, Callback callback) {        if (params == null) {            throw new RuntimeException("参数为空了");        }        MultipartBody.Builder builder = new MultipartBody.Builder();        builder.setType(MultipartBody.FORM);        for (Object key : params.keySet()) {            if (params.get(key) instanceof String) {//uid                builder.addFormDataPart(key.toString(), params.get(key).toString());            } else if (params.get(key) instanceof File) {//File                File file = (File) params.get(key);                //image/jpeg jpg png                builder.addFormDataPart(key.toString(), file.getName(), RequestBody.create(MediaType.parse("application/octet-stream"), file));            }        }        RequestBody body = builder.build();        Log.e("OkHttpUtils", "请求地址：" + url + " 请求的参数：");        Request request = new Request.Builder().url(url).post(body).build();        client.newCall(request).enqueue(callback);    }    public void upload(String url, Map<String, Object> params, Callback callback) {        MultipartBody.Builder builder = new MultipartBody.Builder();        builder.setType(MultipartBody.FORM);        for (String key : params.keySet()) {            Object obj = params.get(key);            if (obj instanceof String) {                builder.addFormDataPart(key, obj.toString());            } else if (obj instanceof File) {                File file = (File) obj;                builder.addFormDataPart("file", file.getName(), RequestBody.create(MediaType.parse("image/jpeg"), file));            }        }        MultipartBody body = builder.build();        Request request = new Request.Builder().url(url).post(body).build();        client.newCall(request).enqueue(callback);    }}

上传公共参数的拦截器

package bwie.com.day10_1510d.net;import android.util.Log;import java.io.IOException;import okhttp3.Interceptor;import okhttp3.Request;import okhttp3.Response;public class LoggingInterceptor implements Interceptor {    @Override    public Response intercept(Chain chain) throws IOException {        Request request = chain.request();        long t1 = System.nanoTime();        Log.i("LoggingInterceptor", String.format("Sending request %s on %s%n%s",                request.url(), chain.connection(), request.headers()));        Response response = chain.proceed(request);        long t2 = System.nanoTime();        Log.i("LoggingInterceptor", String.format("Received response for %s in %.1fms%n%s",                response.request().url(), (t2 - t1) / 1e6d, response.headers()));        return response;    }}

MainActivity里这样写。

package bwie.com.day10_1510d;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.Bundle;import android.os.Environment;import android.os.Handler;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.ImageView;import android.widget.Toast;import java.io.File;import java.io.IOException;import java.util.HashMap;import java.util.Map;import bwie.com.day10_1510d.net.OkHttpUtils;import okhttp3.Call;import okhttp3.Callback;import okhttp3.Response;import okhttp3.ResponseBody;public class MainActivity extends AppCompatActivity implements View.OnClickListener{    private ImageView mIv;    private Handler mHandler;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mHandler =new Handler();        initView();    }    private void initView() {        mIv = (ImageView) findViewById(R.id.iv);        mIv.setOnClickListener(this);    }    @Override    public void onClick(View v) {        int id = v.getId();        if (id == R.id.iv) {            uploadFile();        }    }    private  void uploadFile(){        File externalStorageDirectory = Environment.getExternalStorageDirectory();        String filePath = externalStorageDirectory.getAbsolutePath()+"/b.jpg";        File file =new File(filePath);        Map<String, Object> params = new HashMap<>();        params.put("uid","71");        params.put("file",file);        OkHttpUtils.getOkHttpUtils().upload("https://www.zhaoapi.cn/file/upload",params,new Callback(){            @Override            public void onFailure(Call call, IOException e) {                showMsg(e.getMessage());            }            @Override            public void onResponse(Call call, Response response) throws IOException {                ResponseBody body = response.body();                showMsg(body.string());            }        });    }    private void showMsg(final String msg){        mHandler.post(new Runnable() {            @Override            public void run() {                Toast.makeText(getApplicationContext(),msg,Toast.LENGTH_SHORT).show();                //显示图片                File externalStorageDirectory = Environment.getExternalStorageDirectory();                String filePath = externalStorageDirectory.getAbsolutePath()+"/b.jpg";                Bitmap bitmap = BitmapFactory.decodeFile(filePath);                mIv.setImageBitmap(bitmap);            }        });    }}

这是MainActivity的布局

<?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="bwie.com.day10_1510d.MainActivity">    <TextView        android:layout_width="match_parent"        android:layout_height="40dp"        android:background="#ff3660"        android:gravity="center"        android:text="个人信息"        android:textColor="#ffffff" />    <RelativeLayout        android:layout_width="match_parent"        android:layout_height="40dp">        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_centerVertical="true"            android:text="头像" />        <ImageView            android:id="@+id/iv"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_alignParentRight="true"            android:layout_centerVertical="true"            android:src="@mipmap/ic_launcher" />    </RelativeLayout></LinearLayout>

阅读全文

0 0