我使用以下代码进行图片上传
package com.purpletab.warehouse.utils;
import android.util.Log;
import com.android.volley.AuthFailureError;
import com.android.volley.NetworkResponse;
import com.android.volley.ParseError;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.VolleyLog;
import com.android.volley.toolbox.HttpHeaderParser;
import com.google.gson.Gson;
import org.apache.http.HttpEntity;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.Map;
/**
* Created by macpurple8 on 15/06/16.
*/
public class MultipartRequest extends Request {
private static final String KEY_PICTURE = "picture";
private static final String KEY_FILE = "file";
private static final String TAG = "MutlipartRequest";
private HttpEntity mHttpEntity;
private final Class mClass;
private Response.Listener mListener;
private Map mHeaders;
private final Gson gson;
public MultipartRequest(String url, File file, String imageName,
Class clazz,
Map headers,
Response.Listener listener,
Response.ErrorListener errorListener) {
super(Method.POST, url, errorListener);
mHeaders = headers;
mClass = clazz;
mListener = listener;
gson = new Gson();
mHttpEntity = buildMultipartEntity(file, imageName);
}
public MultipartRequest(String url, String path, String imageName,
Class clazz,
Map headers,
Response.Listener listener,
Response.ErrorListener errorListener) {
super(Method.POST, url, errorListener);
mHeaders = headers;
mClass = clazz;
mListener = listener;
gson = new Gson();
mHttpEntity = buildMultipartEntity(path, imageName);
}
private HttpEntity buildMultipartEntity(String path, String imageName) {
File file = new File(path);
return buildMultipartEntity(file, imageName);
}
private HttpEntity buildMultipartEntity(File file, String imageName) {
MultipartEntityBuilder builder = MultipartEntityBuilder.create();
String fileName = file.getName();
System.out.println("file name .. .. " + imageName);
//builder.addBinaryBody(KEY_PICTURE, file, ContentType.create("image/jpeg"), imageName);
builder.addBinaryBody(KEY_FILE, file, ContentType.create("image/jpeg"), imageName);
return builder.build();
}
@Override
public Map getHeaders() throws AuthFailureError {
return mHeaders != null ? mHeaders : super.getHeaders();
}
@Override
public String getBodyContentType() {
return mHttpEntity.getContentType().getValue();
}
@Override
public byte[] getBody() throws AuthFailureError {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try {
mHttpEntity.writeTo(bos);
} catch (IOException e) {
VolleyLog.e("IOException writing to ByteArrayOutputStream");
}
return bos.toByteArray();
}
@Override
protected Response parseNetworkResponse(NetworkResponse response) {
String json;
try {
json = new String(response.data, HttpHeaderParser.parseCharset(response.headers));
} catch (UnsupportedEncodingException e) {
Log.e(TAG, String.format("Encoding problem parsing API response. NetworkResponse:%s", response.toString()), e);
return Response.error(new ParseError(e));
}
/*try {
return Response.success(gson.fromJson(json, mClass), HttpHeaderParser.parseCacheHeaders(response));
} catch (JsonSyntaxException e) {
Log.e(TAG, String.format("Couldn't API parse JSON response. NetworkResponse:%s", response.toString()), e);
Log.e(TAG, String.format("Couldn't API parse JSON response. Json dump: %s", json));
return Response.error(new ParseError(e));
}
*/
Log.e(TAG, String.format("Couldn't API parse JSON response. Json dump: %s", json));
return Response.success(response.toString(), HttpHeaderParser.parseCacheHeaders(response));
}
/**
* Subclasses must implement this to perform delivery of the parsed
* response to their listeners. The given response is guaranteed to
* be non-null; responses that fail to parse are not delivered.
*
* @param response The parsed response returned by
* {@link #parseNetworkResponse(NetworkResponse)}
*/
@Override
protected void deliverResponse(Object response) {
mListener.onResponse(response);
}
/**
* Compares this object to the specified object to determine their relative
* order.
*
* @param another the object to compare to this instance.
* @return a negative integer if this instance is less than {@code another};
* a positive integer if this instance is greater than
* {@code another}; 0 if this instance has the same order as
* {@code another}.
* @throws ClassCastException if {@code another} cannot be converted into something
* comparable to {@code this} instance.
*/
@Override
public int compareTo(Object another) {
return 0;
}
}
要触发方法，我调用以下代码
MultipartRequest request = new MultipartRequest(url, new File(imagepath), imageName,
Response.class, null, new Response.Listener() {
@Override
public void onResponse(Object response) {
System.out.println("Uploaded to server");
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
System.out.println("Upload failed " + error.getMessage());
}
});
request.setRetryPolicy(new DefaultRetryPolicy(
AppConstants.SOCKET_TIMEOUT_MS,
DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
baseApp.addToRequestQueue(request, "a tag");
我得到的错误如下..
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.purpletab.warehouse, PID: 14595
java.lang.NoClassDefFoundError: org.apache.http.util.Args
at org.apache.http.entity.mime.content.AbstractContentBody.<init>(AbstractContentBody.java:48)
at org.apache.http.entity.mime.content.FileBody.<init>(FileBody.java:96)
at org.apache.http.entity.mime.MultipartEntityBuilder.addBinaryBody(MultipartEntityBuilder.java:141)
at com.purpletab.warehouse.utils.MultipartRequest.buildMultipartEntity(MultipartRequest.java:76)
at com.purpletab.warehouse.utils.MultipartRequest.<init>(MultipartRequest.java:48)
at com.purpletab.warehouse.fragments.FormPageFragment$override.onClick(FormPageFragment.java:329)
at com.purpletab.warehouse.fragments.FormPageFragment$override.access$dispatch(FormPageFragment.java)
at com.purpletab.warehouse.fragments.FormPageFragment.onClick(FormPageFragment.java:0)
at android.view.View.performClick(View.java:4438)
at android.view.View$PerformClick.run(View.java:18431)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:149)
at android.app.ActivityThread.main(ActivityThread.java:5061)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:603)
at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：0)
尝试添加此行：
useLibrary 'org.apache.http.legacy'
到app android文件中的build.gradle关闭。
这个apache.http pacakge在Android 6中已被弃用。