httpclient上传附件实例

    /**
     * 上传附件
     * @param host
     * @param uri
     * @param filePath  文件路径
     * @param name  服务端定义的附件名
     * @param param  请求带的参数
     * @return
     */
    public String upload(String host, String uri, String filePath,String name, Map param) {
        logger.info("*****************request*****************");
        CloseableHttpClient httpClient = null;
        CloseableHttpResponse respOnse= null;
        String url = host + uri ;
        String rst = "";
        try {
            httpClient = HttpClients.createDefault();
            logger.info("请求路径： "+ url);
            HttpPost httpPost = new HttpPost(url);
　　           //通过当前类的加载器来加载资源，调用getResourceAsStream()是保证和类类型同一个加载器加载
            InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream(filePath);  //获取resources下的资源文件
            File file = new File(filePath);
            MultipartEntityBuilder builder = MultipartEntityBuilder.create(); //创建MultipartEntityBuilder对象
　　　　　　　　//添加上传的二进制文件
            builder.addBinaryBody(name, inputStream, ContentType.create("multipart/form-data",Consts.UTF_8), file.getName());  
            for (Map.Entry entry : param.entrySet()) {
		        String key = entry.getKey();
		        String value = entry.getValue();
		        StringBody stringBody = new StringBody(value, create("text/plain", Consts.UTF_8)); //解决中文乱码问题
　　　　　　　　　　　　　　　//添加请求入参
		        builder.addPart(key, stringBody);
		        logger.info("请求参数："+key+":"+ value);
            }
            HttpEntity reqEntity = builder.build();
            httpPost.setEntity(reqEntity);
              // 发起请求 并返回请求的响应
            respOnse= httpClient.execute(httpPost);
               // 获取响应对象
            HttpEntity resEntity = response.getEntity();
            if (resEntity != null) {
		          // 打印响应内容
                rst = EntityUtils.toString(resEntity, Charset.forName("UTF-8")) ;
                logger.info("*****************response*****************");
                logger.info("响应结果： " +rst);
            }
             // 销毁
            EntityUtils.consume(resEntity);
            return rst;
        } catch (Exception e) {
            logger.info("出错啦： "+e.getMessage());
            e.printStackTrace();
            return "出错了";
        } finally {
            try {
		    if (response != null) {
		        response.close();
	        }
            } catch (IOException e) {
		        e.printStackTrace();
            }
		    try {
		    if (httpClient != null) {
                httpClient.close();
		    }
		    } catch (IOException e) {
		        e.printStackTrace();
		        }
        }
    }　

    /**
     　　* @description: TODO 上传图片
     　　* @author : xxx
     　　* @date 2019/6/6 11:15
     　　*/
    public String uploadImage() throws Exception {
        Map params  = new HashMap<>();
        params.put("uploadType","1");
	  //文件放置resources目录下， 服务端定义接收附件名称为 imageFile
        String rst = upload("http://xxxx.com","/web/upload","picture/repaymentPic.jpg","imageFile",params);
        return rst;
    }