我正在尝试使用apache http库和MultipartEntityBuilder来编写上传AsyncTask，我正在使用一段代码from this post。
在项目库中，我添加了
httpclient-4.3.1.jar
httpclient-cache-4.3.1.jar
httpcore-4.3.jar
httpmime-4.3.1.jar
这是清单摘录
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CALL_PHONE" />
在AsyncTask中，我添加了库，并按如下方式包含它们：
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.impl.client.DefaultHttpClient;
我有一些Log.d来识别错误的位置，它似乎来自MultipartEntityBuilder builder = MultipartEntityBuilder.create();行，错误描述为VFY: unable to resolve static method 5641: Lorg/apache/http/entity/mime/MultipartEntityBuilder;.create ()...。
任何建议？
这是我的代码：
public class AsyncAdPoster extends AsyncTask<Void, Void, String> {
// Exception Management
private Exception exception;
@Override
protected String doInBackground(Void... arg0) {
// TODO Auto-generated method stub
try {
Log.d("DEBUG", "START [...]");
String resultPost;
resultPost = postAd(MainActivity.postTitle,
MainActivity.postDescription,
MainActivity.bitmapFullresPhoto);
return resultPost;
} catch (Exception e) {
this.setException(e);
return null;
}
}
// Prepare the interface before starting the task
protected void onPreExecute() {
}
// Update the view with the updated data from the adsList
protected void onPostExecute(String result) {
Log.d("DEBUG", "RESULT [" + result + "]");
}
public Exception getException() {
return exception;
}
public void setException(Exception exception) {
this.exception = exception;
}
/**
* Upload management
*/
public static String postAd(String myTitle,
String myDescription,
Bitmap myPhoto ) throws Exception {
Log.d("DEBUG", "INSIDE [1]");
HttpClient client = new DefaultHttpClient();
Log.d("DEBUG", "INSIDE [1a]");
HttpPost post = new HttpPost(MainActivity.POST_URL);
Log.d("DEBUG", "INSIDE [1b]");
MultipartEntityBuilder builder = MultipartEntityBuilder.create(); // ERROR HERE
Log.d("DEBUG", "INSIDE [1c]");
builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
// fetch the picture in MainActivity.
//final File file = new File(fileName);
//FileBody fb = new FileBody(file);
//builder.addPart("file", fb);
Log.d("DEBUG", "INSIDE [2]");
if( myPhoto != null ) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
myPhoto.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] imageBytes = baos.toByteArray();
String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT);
builder.addTextBody("photo", encodedImage);
}
Log.d("DEBUG", "INSIDE [3]");
builder.addTextBody("title", myTitle);
builder.addTextBody("description", myDescription);
Log.d("DEBUG", "INSIDE [4]");
final HttpEntity yourEntity = builder.build();
class ProgressiveEntity implements HttpEntity {
@Override
public void consumeContent() throws IOException {
yourEntity.consumeContent();
}
@Override
public InputStream getContent() throws IOException,
IllegalStateException {
return yourEntity.getContent();
}
@Override
public Header getContentEncoding() {
return yourEntity.getContentEncoding();
}
@Override
public long getContentLength() {
return yourEntity.getContentLength();
}
@Override
public Header getContentType() {
return yourEntity.getContentType();
}
@Override
public boolean isChunked() {
return yourEntity.isChunked();
}
@Override
public boolean isRepeatable() {
return yourEntity.isRepeatable();
}
@Override
public boolean isStreaming() {
return yourEntity.isStreaming();
} // CONSIDER put a _real_ delegator into here!
@Override
public void writeTo(OutputStream outstream) throws IOException {
class ProxyOutputStream extends FilterOutputStream {
public ProxyOutputStream(OutputStream proxy) {
super(proxy);
}
public void write(int idx) throws IOException {
out.write(idx);
}
public void write(byte[] bts) throws IOException {
out.write(bts);
}
public void write(byte[] bts, int st, int end) throws IOException {
out.write(bts, st, end);
}
public void flush() throws IOException {
out.flush();
}
public void close() throws IOException {
out.close();
}
} // CONSIDER import this class (and risk more Jar File Hell)
class ProgressiveOutputStream extends ProxyOutputStream {
public ProgressiveOutputStream(OutputStream proxy) {
super(proxy);
}
public void write(byte[] bts, int st, int end) throws IOException {
// FIXME Put your progress bar stuff here!
out.write(bts, st, end);
}
}
yourEntity.writeTo(new ProgressiveOutputStream(outstream));
}
};
ProgressiveEntity myEntity = new ProgressiveEntity();
Log.d("DEBUG", "INSIDE [5]");
post.setEntity(myEntity);
HttpResponse response = client.execute(post);
return getContent(response);
*/
return "";
}
public static String getContent(HttpResponse response) throws IOException {
BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
String body = "";
String content = "";
while ((body = rd.readLine()) != null)
{
content += body + "\n";
}
return content.trim();
}
}