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我正在尝试通过我的 java 代码执行文件附件操作。但它在我的控制台输出中返回“java.lang.NoClassDefFoundError”。你能帮我解决这个问题吗？休息我的代码没有任何问题。

以下是我的代码：

import java.io.BufferedReader;
import java.io.File;
import java.io.InputStreamReader;
import java.nio.charset.Charset;

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.MultipartEntity;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.protocol.HTTP;


    public static void main(String[] args) throws Exception {
            HttpClient httpClient = new DefaultHttpClient();
            HttpPost httpPost = new HttpPost("http://watsonexp-stg.corp.adobe.com/watson/api/bug/addAttachmentAPI.jsp");

            //to make a multipart POST request
             MultipartEntity multipartEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE, null, Charset.forName(HTTP.UTF_8));
             multipartEntity.addPart("appGUID", new StringBody("e2513b90-f327-4cc0-8c07-2d79a1b6eddd"));
             multipartEntity.addPart("userId", new StringBody("karansha"));
             multipartEntity.addPart("password", new StringBody("RGVsbCUxMDA="));
             multipartEntity.addPart("bugId", new StringBody("3402114"));

             multipartEntity.addPart("fileDescription", new StringBody("trying to attach a file"));
             multipartEntity.addPart("external", new StringBody("false"));
             multipartEntity.addPart("Filedata", new FileBody(new File("C:/Users/karansha/Desktop/test.jpg")));

             httpPost.setEntity(multipartEntity);

             HttpResponse res= httpClient.execute(httpPost);

            //following lines will print out the respose from the server on attempting to upload a file.

             HttpEntity httpEntity = res.getEntity();
             BufferedReader br = new BufferedReader(new InputStreamReader(httpEntity.getContent()));
             String  line = "";
             while ((line = br.readLine()) != null){
                 System.out.println(line);
             }
        }
    }
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1 回答 1

0

这意味着您在编译时拥有的某些类在运行时以某种方式丢失。在编译期间记下您的类路径并将其与您的运行时环境进行比较。这应该可以帮助您找到丢失的课程。

于 2013-04-16T12:19:37.753 回答