我尝试使用 build.gradle 文件将 httpmime 包含在我的应用程序中,并且一切都可以正常编译。相反,当应用程序尝试实际使用 MultipartEntityBuilder 类时,日志上会出现一堆 WARN 级别消息,表明存在问题。
以下是我的 build.gradle 依赖项的摘录:
compile('org.apache.httpcomponents:httpmime:4.+') {
exclude module: "httpclient"
}
以下是错误:
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;)
java类:
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);
}
}
[编辑]根据答案正确的依赖关系
compile('org.apache.httpcomponents:httpmime:4.+') {
exclude module: "httpclient"
}
compile('org.apache.httpcomponents:httpcore:4.+') {
exclude module: "httpclient"
}
[第二次编辑]仍然存在问题 - 现在是这些其他缺失的位,但后端可能存在问题:
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;
[另一个编辑]
在这种情况下,最后的一点缺失似乎对 MultipartEntityBuilder 的成功使用没有任何影响。