问题
I try to include httpmime in my application using the build.gradle file, and everything compiles fine. Instead, when the application tries to actually use the MultipartEntityBuilder class, there are a bunch of WARN level messages on the log saying that there are problems.
Here's the excerpt from my build.gradle for the dependency:
compile('org.apache.httpcomponents:httpmime:4.+') {
exclude module: "httpclient"
}
Here are the errors:
10-09 13:39:37.367 2409-2426/com.company.app W/dalvikvm﹕ VFY: unable to resolve static field 6967 (DEFAULT_BINARY) in Lorg/apache/http/entity/ContentType; 10-09 13:39:37.367 2409-2426/com.company.app W/dalvikvm﹕ VFY: unable to find class referenced in signature (Lorg/apache/http/entity/ContentType;) 10-09 13:39:37.367 2409-2426/com.company.app W/dalvikvm﹕ VFY: unable to find class referenced in signature (Lorg/apache/http/entity/ContentType;) 10-09 13:39:37.367 2409-2426/com.company.app W/dalvikvm﹕ VFY: unable to resolve static field 6967 (DEFAULT_BINARY) in Lorg/apache/http/entity/ContentType; 10-09 13:39:37.367 2409-2426/com.company.app W/dalvikvm﹕ VFY: unable to find class referenced in signature (Lorg/apache/http/entity/ContentType;) 10-09 13:39:37.367 2409-2426/com.company.app W/dalvikvm﹕ VFY: unable to find class referenced in signature (Lorg/apache/http/entity/ContentType;) 10-09 13:39:37.367 2409-2426/com.company.app W/dalvikvm﹕ VFY: unable to resolve static field 6967 (DEFAULT_BINARY) in Lorg/apache/http/entity/ContentType; 10-09 13:39:37.367 2409-2426/com.company.app W/dalvikvm﹕ VFY: unable to find class referenced in signature (Lorg/apache/http/entity/ContentType;) 10-09 13:39:37.367 2409-2426/com.company.app W/dalvikvm﹕ VFY: unable to find class referenced in signature (Lorg/apache/http/entity/ContentType;) 10-09 13:39:37.377 2409-2426/com.company.app W/dalvikvm﹕ VFY: unable to resolve static method 19478: Lorg/apache/http/util/Args;.notNull (Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object; 10-09 13:39:37.377 2409-2426/com.company.app W/dalvikvm﹕ VFY: unable to resolve static field 6968 (DEFAULT_TEXT) in Lorg/apache/http/entity/ContentType; 10-09 13:39:37.377 2409-2426/com.company.app W/dalvikvm﹕ VFY: unable to find class referenced in signature (Lorg/apache/http/entity/ContentType;) 10-09 13:39:37.377 2409-2426/com.company.app W/dalvikvm﹕ VFY: unable to find class referenced in signature (Lorg/apache/http/entity/ContentType;)
The java class:
import android.util.Log;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import org.apache.http.HttpEntity;
import org.apache.http.entity.mime.MultipartEntityBuilder;
public class FileUploader {
private final static String BOUNDARY = "__--__--__SERVETHEOVERMIND-__-_";
public void uploadFile(String targetUrl, MultipartEntityBuilder upload, UploadHandler after) {
Log.v("FileUploader", "Uploading to " + targetUrl);
HttpURLConnection con = null;
OutputStream os = null;
InputStream is = null;
try {
HttpEntity uploadEntity = upload.build();
URL postTo = new URL(targetUrl);
con = (HttpURLConnection) postTo.openConnection();
con.setRequestMethod("POST");
con.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + BOUNDARY);
con.setDoOutput(true);
con.setDoInput(true);
con.setUseCaches(false);
con.addRequestProperty("Connection", "Keep-Alive");
con.setRequestProperty("Content-length", String.valueOf(uploadEntity.getContentLength()));
os = con.getOutputStream();
uploadEntity.writeTo(os);
os.close();
con.connect();
is = con.getInputStream();
after.consumeUploadResponse(is);
con.disconnect();
} catch (IOException e) {
e.printStackTrace();
}
if(con != null) {
con.disconnect();
}
if(os != null) {
try {
os.close();
} catch (IOException e) {
Log.v("Uploader", "Closed output stream");
}
}
if(is != null) {
try {
is.close();
} catch (IOException e) {
Log.v("Uploader", "Closed input stream");
}
}
}
public interface UploadHandler {
public void consumeUploadResponse(InputStream stream);
}
}
[EDIT] Correct Dependencies, as per answer
compile('org.apache.httpcomponents:httpmime:4.+') {
exclude module: "httpclient"
}
compile('org.apache.httpcomponents:httpcore:4.+') {
exclude module: "httpclient"
}
[SECOND EDIT] Still having issues - now it's these other missing bits, but it might be problems on the backend:
10-10 11:51:54.998 29597-29638/com.company.app W/dalvikvm﹕ VFY: unable to resolve static field 7465 (INSTANCE) in Lorg/apache/http/message/BasicHeaderValueParser; 10-10 11:51:54.998 29597-29638/com.company.app W/dalvikvm﹕ VFY: unable to resolve static field 7459 (INSTANCE) in Lorg/apache/http/message/BasicHeaderValueFormatter;
[YET ANOTHER EDIT]
It seems the last little missing bits don't have any effect on the successful use of the MultipartEntityBuilder in this case.
回答1:
You need to add httpcore-4.3.jar to your java build path. I had the same problem and it's gone after adding this jar.
回答2:
This is how I did in my gradle..
dependencies {
compile ('org.apache.httpcomponents:httpmime:4.3'){
exclude group: 'org.apache.httpcomponents', module: 'httpclient'
}
compile ('org.apache.httpcomponents:httpcore:4.4.1'){
exclude group: 'org.apache.httpcomponents', module: 'httpclient'
}
}
And inside android
android{
packagingOptions {
exclude 'META-INF/DEPENDENCIES'
exclude 'META-INF/NOTICE'
exclude 'META-INF/LICENSE'
}
}
回答3:
compile group: 'org.apache.httpcomponents' , name: 'httpclient-android' , version: '4.3.5.1' compile('org.apache.httpcomponents:httpmime:4.3') {
exclude module: "httpclient" }
You can use this above dependencies to the build.gradle (Module:app) to your Project for the following IMPORT statements
import org.apache.http.entity.ContentType; import org.apache.http.entity.mime.MIME;
来源：https://stackoverflow.com/questions/19283691/problems-including-apache-httpcomponents-in-android-gradle-project