HttpClient 4 - 文件上传

package test.httpclient4;

    import java.io.File;
    import java.io.IOException;

    import org.apache.http.HttpEntity;
    import org.apache.http.HttpResponse;
    import org.apache.http.HttpStatus;
    import org.apache.http.client.ClientProtocolException;
    import org.apache.http.client.HttpClient;
    import org.apache.http.client.methods.HttpPost;
    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.util.EntityUtils;

    public class SendFile {

        public static void main(String[] args) throws ClientProtocolException,
                IOException {
            HttpClient httpclient = new DefaultHttpClient();
            //请求处理页面
            HttpPost httppost = new HttpPost(
                    "");
            //创建待处理的文件
            FileBody file = new FileBody(new File("d:/22.rar"));
            //创建待处理的表单域内容文本
            StringBody descript = new StringBody("0431.la");

            //对请求的表单域进行填充
            MultipartEntity reqEntity = new MultipartEntity();
            reqEntity.addPart("file", file);
            reqEntity.addPart("descript", descript);
            //设置请求
            httppost.setEntity(reqEntity);
            //执行
            HttpResponse response = httpclient.execute(httppost);
            //HttpEntity resEntity = response.getEntity();
            //System.out.println(response.getStatusLine());
            if(HttpStatus.SC_OK==response.getStatusLine().getStatusCode()){
                HttpEntity entity = response.getEntity();
                //显示内容
                if (entity != null) {
                    System.out.println(EntityUtils.toString(entity));
                }
                if (entity != null) {
                    entity.consumeContent();
                }
            }
        }
    }

这里说明一下 需要一个额外的包，apache 的mime4j 的lib。