数行代码实现利用Volley网络框架上传文件
jopen
9年前
首先自己写一个MultipartRequest类，继承自StringRequest。
import com.android.internal.http.multipart.Part; import com.android.volley.AuthFailureError; import com.android.volley.Response; import com.android.volley.VolleyLog; import com.android.volley.toolbox.StringRequest; import java.io.ByteArrayOutputStream; import java.io.IOException; public class MultipartRequest extends StringRequest { private Part[] parts; public MultipartRequest(String url, Part[] parts, Response.Listener<String> listener, Response.ErrorListener errorListener) { super(Method.POST, url, listener, errorListener); this.parts = parts; } @Override public String getBodyContentType() { return "multipart/form-data; boundary=" + Part.getBoundary(); } @Override public byte[] getBody() throws AuthFailureError { ByteArrayOutputStream baos = new ByteArrayOutputStream(); try { Part.sendParts(baos, parts); } catch (IOException e) { VolleyLog.e(e, "error when sending parts to output!"); } return baos.toByteArray(); } }
重写了StringRequest中的getBody()和getBodyContentType()方法就可以了。
使用方法：
//构造参数列表 List<Part> partList = new ArrayList<Part>(); partList.add(new StringPart("username", "hellfire")); partList.add(new StringPart("email", "ouyangjun@aliyun.com")); try { partList.add(new FilePart("photo", new File("/mnt/sdcard/Test/hellfire.jpg"))); } catch (FileNotFoundException e) { e.printStackTrace(); } //获取队列 RequestQueue requestQueue = Volley.newRequestQueue(this); String url = "http://test/profileUpdate.do"; //生成请求 MultipartRequest profileUpdateRequest = new MultipartRequest(url, partList.toArray(new Part[partList.size()]), new Response.Listener<String>() { @Override public void onResponse(String response) { //处理成功返回信息 String info = response.substring(0, 20); Toast.makeText(getApplication(), info, Toast.LENGTH_SHORT).show(); } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { //处理失败错误信息 Log.e("MultipartRequest", error.getMessage(), error); Toast.makeText(getApplication(), error.getMessage(), Toast.LENGTH_SHORT).show(); } }); //将请求加入队列 requestQueue.add(profileUpdateRequest);