在Android应用程序中使用Jersey for restful api时出现此错误：

Question

1. 这是我正在使用的代码：

    import android.os.Bundle; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import java.io.File; import java.io.IOException; import java.util.logging.Logger; import java.io.FileInputStream; import java.io.FileNotFoundException; import org.apache.commons.codec.binary.Base64; public class Fragment_2 extends Fragment { static Logger logger = Logger.getLogger(Fragment_2.class.getSimpleName()); public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){ new Thread(new Runnable() { public void run() { try { String base64 = null; String imageDataString2 = null; File file = new File("/mnt/sdcard/DCIM/Camera/2013-03-27 00.22.48.jpg"); try { // Reading a Image file from file system FileInputStream imageInFile = new FileInputStream(file); byte imageData[] = new byte[(int) file.length()]; imageInFile.read(imageData); // Converting Image byte array into Base64 String String imageDataString = new String(Base64.encodeBase64(imageData)); imageDataString2 = imageDataString.replace("_", "/"); imageDataString2 = imageDataString2.replace("-", "+"); System.out.println(imageDataString2); base64 = imageDataString2; System.out.println("Image Successfully Manipulated!"); } catch (FileNotFoundException e) { System.out.println("Image not found" + e); } catch (IOException ioe) { System.out.println("Exception while reading the Image " + ioe); } ClientConfig config = new DefaultClientConfig(); Client client = Client.create(config); WebResource service = client.resource(UriBuilder.fromUri("http://xxxxxx:8080/api").build());//change it to the latest URL Form f = new Form(); f.add("img",base64 ); String s = service.post(String.class, f); } catch (Exception e) { } } }).start(); return inflater.inflate(R.layout.fragment_2, container, false); } } 

这是错误：

03-28 03:50:24.569: W/dalvikvm(20989): Link of class 'Lcom/sun/jersey/core/osgi/OsgiRegistry;' failed
03-28 03:50:24.569: W/dalvikvm(20989): VFY: unable to resolve static method 5977: Lcom/sun/jersey/core/osgi/OsgiRegistry;.getInstance ()Lcom/sun/jersey/core/osgi/OsgiRegistry;
03-28 03:50:24.569: W/dalvikvm(20989): Link of class 'Lcom/sun/jersey/core/osgi/OsgiRegistry;' failed
03-28 03:50:24.569: W/dalvikvm(20989): VFY: unable to find class referenced in signature (Lcom/sun/jersey/core/osgi/OsgiRegistry;)
03-28 03:50:27.379: W/dalvikvm(20989): Exception Ljava/lang/NullPointerException; thrown while initializing Lcom/sun/jersey/core/header/MediaTypes;
03-28 03:50:27.379: W/dalvikvm(20989): threadid=9: thread exiting with uncaught exception (group=0x40018578)
03-28 03:50:27.399: E/AndroidRuntime(20989): FATAL EXCEPTION: Thread-10
03-28 03:50:27.399: E/AndroidRuntime(20989): java.lang.ExceptionInInitializerError
03-28 03:50:27.399: E/AndroidRuntime(20989):    at com.sun.jersey.core.spi.factory.MessageBodyFactory.getMessageBodyWriterMediaTypes(MessageBodyFactory.java:444)
03-28 03:50:27.399: E/AndroidRuntime(20989):    at com.sun.jersey.api.client.RequestWriter.getMediaType(RequestWriter.java:324)
03-28 03:50:27.399: E/AndroidRuntime(20989):    at com.sun.jersey.api.client.RequestWriter.writeRequestEntity(RequestWriter.java:282)
03-28 03:50:27.399: E/AndroidRuntime(20989):    at com.sun.jersey.client.urlconnection.URLConnectionClientHandler._invoke(URLConnectionClientHandler.java:213)
03-28 03:50:27.399: E/AndroidRuntime(20989):    at com.sun.jersey.client.urlconnection.URLConnectionClientHandler.handle(URLConnectionClientHandler.java:149)
03-28 03:50:27.399: E/AndroidRuntime(20989):    at com.sun.jersey.api.client.Client.handle(Client.java:648)
03-28 03:50:27.399: E/AndroidRuntime(20989):    at com.sun.jersey.api.client.WebResource.handle(WebResource.java:680)
03-28 03:50:27.399: E/AndroidRuntime(20989):    at com.sun.jersey.api.client.WebResource.post(WebResource.java:251)
03-28 03:50:27.399: E/AndroidRuntime(20989):    at com.example.programming_fragments.Fragment_2$1.run(Fragment_2.java:91)
03-28 03:50:27.399: E/AndroidRuntime(20989):    at java.lang.Thread.run(Thread.java:1019)
03-28 03:50:27.399: E/AndroidRuntime(20989): Caused by: java.lang.NullPointerException
03-28 03:50:27.399: E/AndroidRuntime(20989):    at javax.ws.rs.core.MediaType.valueOf(MediaType.java:119)
03-28 03:50:27.399: E/AndroidRuntime(20989):    at com.sun.jersey.core.header.MediaTypes.<clinit>(MediaTypes.java:65)
03-28 03:50:27.399: E/AndroidRuntime(20989):    ... 10 more

我该怎么办？

Answer 1

我不确定这是正确的解决方案

根据Jersey deps，您需要在依赖项/类路径中使用jersey-json模块。

如果库的名称为libitv.so，则会识别该库，并在构建.apk之前将其放在应用程序目录的libs \\ armeabi目录中。

有时，当库未完全复制（部分复制）时，由于某些系统问题，也无法识别部分库。

有关详细信息，请参阅此处

试试这个链接有一些解决方案

更新：

java.lang.ExceptionInInitializerError

引起： java.lang.UnsatisfiedLinkError:找不到库jniavutil

除了libsndfile之外，还需要安装libFLAC。 您可以使用您用于安装libsndfile的任何方法安装libFLAC ...

您已经错过了ddms日志中的重要位。 查找包含“由...引起”的行和/或包含更多异常日志，以便我们查看它。

您已编译启用CodePro coverage。 把它关掉。

实际上这是我们在ADT 17面临的问题，你必须把你的jar文件放到libs文件夹中才能克服这个异常

所以右键单击你的项目 - >创建一个名为libs的文件夹

并按照此步骤操作

 right click (on libs folder) -->import-->File System-->browse to select your jar file and hit finish and run you project.

之后

 right click on the project --> Built Path-->java built path-->add jars select your jar file from your libs folder

如果这也无法重建一切（包括数据），它将起作用。