SpringMVC 利用HttpPost向服务端接口上传文件

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.ParseException;  
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.impl.client.DefaultHttpClient;  
import org.apache.http.util.EntityUtils; 


public class FileUploadClient {

    public void SubmitPost(String url, String file36Path, String file48Path, String file72Path,
            String file96Path, String file144Path) {

        HttpClient httpclient = new DefaultHttpClient();

        try {

            HttpPost httppost = new HttpPost(url);

            FileBody file36 = new FileBody(new File(file36Path));
            FileBody file48 = new FileBody(new File(file48Path));
            FileBody file72 = new FileBody(new File(file72Path));
            FileBody file96 = new FileBody(new File(file96Path));
            FileBody file144 = new FileBody(new File(file144Path));

            MultipartEntity reqEntity = new MultipartEntity();

            reqEntity.addPart("file36", file36);// file36为请求后台的File upload;属性
            reqEntity.addPart("file48", file48);
            reqEntity.addPart("file72", file72);
            reqEntity.addPart("file96", file96);
            reqEntity.addPart("file144", file144);
            
            httppost.setEntity(reqEntity);

            HttpResponse response = httpclient.execute(httppost);

            int statusCode = response.getStatusLine().getStatusCode();

            if (statusCode == HttpStatus.SC_OK) {

                System.out.println("服务器正常响应.....");

                HttpEntity resEntity = response.getEntity();

                System.out.println(EntityUtils.toString(resEntity));// httpclient自带的工具类读取返回数据

                System.out.println(resEntity.getContent());//这里是服务端的返回值

                EntityUtils.consume(resEntity);
            }

        } catch (ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            try {
                httpclient.getConnectionManager().shutdown();
            } catch (Exception ignore) {

            }
        }
    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub

        FileUploadClient fileUploadClient = new FileUploadClient();

        fileUploadClient.SubmitPost(
                "http://127.0.0.1:8080/testProject/pictureUploadInterface.htm",
                "C://app_icon1.png", "C://app_icon2.png", "C://app_icon3.png", "C://app_icon4.png", "C://app_icon5.png");
    }

}

　　/**
     * 图片上传接口
     * 
     * @param request
     * @param response
     * @param session
     * @return
     * @throws IOException
     */
    @RequestMapping(value = "/pictureUploadInterface", method = RequestMethod.POST)
    public String pictureUploadInterface(HttpServletRequest request,
            HttpServletResponse response, HttpSession session,
            @RequestParam("file36") MultipartFile file36,
            @RequestParam("file48") MultipartFile file48,
            @RequestParam("file72") MultipartFile file72,
            @RequestParam("file96") MultipartFile file96,
            @RequestParam("file144") MultipartFile file144)
            throws IOException {
        String filePath = "D://test";

        // 响应客户端  
        response.setContentType("text/html"); 
        PrintWriter out = response.getWriter();
        if (file36.isEmpty() && file48.isEmpty()
                && file72.isEmpty() && file96.isEmpty() && file144.isEmpty()) {
            out.write(-102);//-102 上传的图片全部为空
            return null;
        }
        if((game==null||game.equals(""))||(channel==null)||channel.equals("")){
            out.write(-100);//-100 参数错误
            return null;
        }
        
        if (!file36.isEmpty()) {
            if (!FilenameUtils.getExtension(file36.getOriginalFilename())
                    .equalsIgnoreCase("png")) {
                out.write(-101);//-101 图片格式错误
                return null;
            } else {
                String path = filePath + File.separator + "drawable-ldpi"
                        + File.separator + "app_icon.png";
                byte[] file36Byte = file36.getBytes();
                FileUtils.writeByteArrayToFile(new File(path), file36Byte);
                out.write(200);
            }
        }
        if (!file48.isEmpty()) {
            if (!FilenameUtils.getExtension(file48.getOriginalFilename())
                    .equalsIgnoreCase("png")) {
                out.write(-101);
                return null;
            } else {
                String path = filePath + File.separator + "drawable"
                        + File.separator + "app_icon.png";
                byte[] file48Bype = file48.getBytes();
                FileUtils.writeByteArrayToFile(new File(path), file48Bype);
            }
        }
        if (!file72.isEmpty()) {
            if (!FilenameUtils.getExtension(file72.getOriginalFilename())
                    .equalsIgnoreCase("png")) {
                out.write(-101);
                return null;
            } else {
                String path = filePath + File.separator + "drawable-hdpi"
                        + File.separator + "app_icon.png";
                byte[] file72Byte = file72.getBytes();
                FileUtils.writeByteArrayToFile(new File(path), file72Byte);
            }
        }
        if (!file96.isEmpty()) {
            if (!FilenameUtils.getExtension(file96.getOriginalFilename())
                    .equalsIgnoreCase("png")) {
                out.write(-101);
                return null;
            } else {
                String path = filePath + File.separator + "drawable-xhdpi"
                        + File.separator + "app_icon.png";
                byte[] file96Byte = file96.getBytes();
                FileUtils.writeByteArrayToFile(new File(path), file96Byte);
            }
        }
        if (!file144.isEmpty()) {
            if (!FilenameUtils.getExtension(file144.getOriginalFilename())
                    .equalsIgnoreCase("png")) {
                out.write(-101);
                return null;
            } else {
                String path = filePath + File.separator + "drawable-xxhdpi"
                        + File.separator + "app_icon.png";
                byte[] file144Byte = file144.getBytes();
                FileUtils.writeByteArrayToFile(new File(path), file144Byte);
            }
        }
        out.write(200);//200 上传图片成功
        out.close();
        return null;
    }