外卖小程序实战-接单后小票机自动打印订单

1、导入小票机的sdk

https://www.feieyun.com/api/API-JAVA.zip

public static String addprinter(String snlist){//通过POST请求，发送打印信息到服务器RequestConfig requestConfig = RequestConfig.custom()  .setSocketTimeout(30000)//读取超时  .setConnectTimeout(30000)//连接超时.build();CloseableHttpClient httpClient = HttpClients.custom().setDefaultRequestConfig(requestConfig).build(); HttpPost post = new HttpPost(URL);List<NameValuePair> nvps = new ArrayList<NameValuePair>();nvps.add(new BasicNameValuePair("user",USER));String STIME = String.valueOf(System.currentTimeMillis()/1000);nvps.add(new BasicNameValuePair("stime",STIME));nvps.add(new BasicNameValuePair("sig",signature(USER,UKEY,STIME)));nvps.add(new BasicNameValuePair("apiname","Open_printerAddlist"));//固定值,不需要修改nvps.add(new BasicNameValuePair("printerContent",snlist));CloseableHttpResponse response = null;String result = null;try{post.setEntity(new UrlEncodedFormEntity(nvps,"utf-8"));response = httpClient.execute(post);int statecode = response.getStatusLine().getStatusCode();if(statecode == 200){HttpEntity httpentity = response.getEntity(); if (httpentity != null){result = EntityUtils.toString(httpentity);}}}catch (Exception e){e.printStackTrace();}finally{try {if(response!=null){response.close();}} catch (IOException e) {e.printStackTrace();}try {post.abort();} catch (Exception e) {e.printStackTrace();}try {httpClient.close();} catch (IOException e) {e.printStackTrace();}}return result;}

查看这个添加打印机的方法。

他这个方法不是我想要的，目前这个方法是将user和ukey写死，只能传入打印机列表参数。

而我们需要设置user和ukey，所以得把它这个方法魔改一下。

2、制作需要的请求类

@Data
@Schema(description = "添加小票机")
public class FeieyunRequestDto {private static final String API_NAME = "Open_printerAddlist";@Schema(description = "飞鹅云后台注册用户名")private  String user;private  String ukey;@Schema(description = "当前UNIX时间戳，10位，精确到秒。")private  String stime;/*** 对参数user+UKEY+stime 拼接后（+号表示连接符）* 进行SHA1加密得到签名，加密后签名值为40位小写字符串。*/private  String sig;@Schema(description = "请求的接口名称")private  String apiname;/*** debug=1返回非json格式的数据。仅测试时候使用。*/private  String debug;/*** 打印机编号(必填) # 打印机识别码(必填)* # 备注名称(选填) # 流量卡号码(选填)，* 多台打印机请换行（\n）添加新打印机信息，每次最多100台。*/private  String printerContent;
}

3、更改请求参数