HttpClient 实现 get,post请求

private String sendPost(Map<String,Object> data, String url) {
        CloseableHttpClient httpClient = HttpClientBuilder.create().build();
        StringBuffer sb = new StringBuffer();
        HttpPost httpPost = new HttpPost(url);
        List<NameValuePair> valuePairs = new ArrayList<>();
        if(null != data) {
            for (String key : data.keySet()) {
                if(data.get(key) != null){
                    valuePairs.add(new BasicNameValuePair(key, data.get(key)
                            .toString()));
                }
            }
        }
        try {
            httpPost.setEntity(new UrlEncodedFormEntity(valuePairs));
            HttpResponse response = httpClient.execute(httpPost);
            HttpEntity httpEntity = response.getEntity();
            BufferedInputStream bis = new BufferedInputStream(httpEntity.getContent());
            byte [] buffer;
            while (0<bis.read(buffer=new byte[128])){
                sb.append(new String(buffer,"utf-8"));
            }
        }catch (UnsupportedEncodingException e){//数据格式有误
            e.printStackTrace();
        }catch (IOException e){//请求出错
            e.printStackTrace();
        }finally {
            httpPost.releaseConnection();
        }
        return sb.toString();
    }

    public String sendGet(String url) {
        CloseableHttpClient httpClient = HttpClientBuilder.create().build();
        StringBuffer sb = new StringBuffer();
        HttpGet httpGet = new HttpGet(url);
        try {
            HttpResponse response = httpClient.execute(httpGet);

            HttpEntity entity = response.getEntity();
            InputStreamReader reader = new InputStreamReader(entity.getContent(), "utf-8");
            char[] charbufer;
            while (0 < reader.read(charbufer = new char[10])) {
                sb.append(charbufer);
            }
        } catch (IOException e) {//
            e.printStackTrace();
        } finally {
            httpGet.releaseConnection();
        }
        return sb.toString();
    }