Java中模拟POST上传文件

/**
     *
     * @param url 请求URL
     * @param filePath 本地文件地址
     * @return
     */
    public static String upload(String url,String filePath){
        String fdfsPath = "";
        try {

            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost(url);
            File file = new File(filePath);
            String name = file.getName();
            InputStream in = new FileInputStream(file);
            MultipartEntity reqEntity = new MultipartEntity();
            InputStreamBody inputStreamBody = new InputStreamBody(in,name);
            StringBody fileNam = new StringBody(name);
            StringBody dateFlag = new StringBody("20160122152301");
            StringBody datumType = new StringBody("0");
            StringBody uploadWay = new StringBody("0");
            StringBody userId = new StringBody("0538");
            StringBody tenderId = new StringBody("2315");
            StringBody metrialsType = new StringBody("25");
            StringBody ip = new StringBody("0.0.0.1");
            StringBody driverName = new StringBody("huawei");
            StringBody systemVersion = new StringBody("djf");
            StringBody position = new StringBody("信息路38",  Charset.forName("utf8"));
　　　　　　//文件流
            reqEntity.addPart("datums", inputStreamBody);
            reqEntity.addPart("fileName", fileNam);
            reqEntity.addPart("dateFlag", dateFlag);
            reqEntity.addPart("datumType", datumType);
            reqEntity.addPart("uploadWay", uploadWay);
            reqEntity.addPart("userId", userId);
            reqEntity.addPart("tenderId", tenderId);
            reqEntity.addPart("metrialsType", metrialsType);
            reqEntity.addPart("ip", ip);
            reqEntity.addPart("driverName", driverName);
            reqEntity.addPart("systemVersion", systemVersion);
            reqEntity.addPart("position", position);

            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());

                EntityUtils.consume(resEntity);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return "";
    }


    /**
     * @param args
     */
    public static void main(String[] args) {
        upload("http://192.168.1.1:8080/xxxImageUpload.action","E:\weatertest\002.jpg");
    }

 图片下载

　　

private static void downFile() {
        try {

            String path = "E:\downurl\2016022302\";

            File downFileUrl = new File(path);
            File[] files = downFileUrl.listFiles();
            for (File file:files) {
                BufferedReader bfr = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
                String downParas = null;
                while((downParas=bfr.readLine())!=null){
                    System.out.println("下载参数："+downParas);
                    String[] dows = downParas.split("&");
                    if(dows==null||dows.length<3){
                        System.out.println("数据不正常downParas："+downParas);
                    }else{
                        String tenderFlod = path+dows[0].trim();
                        File tender_fold = new File(tenderFlod.trim());

                        if(!tender_fold.exists()){
                            System.out.println("创建文件夹："+tenderFlod.trim());
                            tender_fold.mkdir();
                        }
                        String leiFold = tenderFlod+"\"+dows[1].trim();
                        File lei_Fold = new File(leiFold);
                        if(!lei_Fold.exists()){
                            System.out.println("创建文件夹："+leiFold);
                            lei_Fold.mkdir();
                        }
                        HttpClient httpclient = new DefaultHttpClient();
                        HttpPost httppost = new HttpPost("http://imagelocal.eloancn.com/xxxdownImg.action");
                        StringBody fileName = new StringBody(dows[2]);
                        MultipartEntity reqEntity = new MultipartEntity();
                        reqEntity.addPart("imgPath", fileName);//fileName文件名称
                        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....."+dows[2].substring(dows[2].lastIndexOf("/")+1)+"下载完成。");
                            HttpEntity resEntity = response.getEntity();
                            String savepath = lei_Fold+"//"+dows[2].substring(dows[2].lastIndexOf("/")+1).trim();
                            FileOutputStream fos = new FileOutputStream(new File(savepath));
                            resEntity.writeTo(fos);
                        }
                    }



                }

            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }