存在的问题包括在Android的摇篮项目的Apache HttpComponents

问题描述

我尝试包括httpmime在使用build.gradle文件我的应用程序，一切编译罚款。相反，当应用程序试图实际使用MultipartEntityBuilder类，还有一堆的WARN在日志中说，有问题级的消息。

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.

下面是从我的build.gradle的依赖的摘录：

Here's the excerpt from my build.gradle for the dependency:

    compile('org.apache.httpcomponents:httpmime:4.+') {
        exclude module: "httpclient"
    }

下面是错误的：

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：

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);
    }
}

正确的依赖关系，因为每个答案

compile('org.apache.httpcomponents:httpmime:4.+') {
    exclude module: "httpclient"
}
compile('org.apache.httpcomponents:httpcore:4.+') {
    exclude module: "httpclient"
}

[第二编辑]但问题仍然存在 - 现在是这些失踪位，但它可能是在后端的问题：

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;

[又一编辑]

看来最后的小缺失位上没有在这种情况下成功使用MultipartEntityBuilder的任何效果。

It seems the last little missing bits don't have any effect on the successful use of the MultipartEntityBuilder in this case.

推荐答案

您需要的HttpCore-4.3.jar添加到您的Java构建路径。我有同样的问题，它的消失将这个jar后。

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.

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