Httpclient 发送 get 请求-蒲公英云

Httpclient 发送 get 请求

Httpclient 发送get请求：

1、工具客户端代码：

public  NmpResponse doGet(NmpRequest request) throws IOException {
        logger.info("------------开始GET请求 nmpHttpClient------------");
        String charset="UTF-8";
        HttpClient httpClient = new HttpClient();
        //设置Http连接超时为15秒
        httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(15000);
        Map<String,String> params = request.getParams();
        String paramValue ="";
        if (null != params && params.size()>0) {
            paramValue=paramValue+"?";
            for(Map.Entry<String,String> param : params.entrySet()) {
                String key = param.getKey();
                String paramEncode  = null;
                if ("?".equals(paramValue)) {
                    paramEncode =  URLEncoder.encode(params.get(key),"UTF-8");//参数转义
                    paramValue = paramValue+key+"="+ paramEncode;
                } else {
                    paramEncode =  URLEncoder.encode(params.get(key),"UTF-8");
                    paramValue = paramValue+"&"+key+"="+ paramEncode;
                }
            }
        }
         String URL =NMP_ROOT_URL+request.getUrl()+paramValue;
        System.out.println("访问接口的全路径转义后："+URL);
        GetMethod getMethod = new GetMethod(URL);
        getMethod = setHeaderAuthInfo(getMethod);
        NmpResponse response = new NmpResponse();
        try {
            logger.info("------------开始执行GET请求，url:{}------------",URL);
            int statusCode = httpClient.executeMethod(getMethod);
            logger.info("------------GET请求结束，code={}------------",statusCode);
            if (statusCode != HttpStatus.SC_OK){
                logger.error("请求出错code={}：{}" ,statusCode ,getMethod.getStatusLine());
            }
            Header[] headers = getMethod.getResponseHeaders();
            byte[] responseBody = getMethod.getResponseBody();
            String s = new String(responseBody, charset);
            response.setRespBody(responseBody);
            response.setRespHeaders(headers);
            response.setResponseStr(s);
            logger.info("------------结束GET请求 nmpHttpClient------------");
        } catch (IOException e){
            logger.error("请求出错IOException：{}" ,e);
            throw e;
        }  finally {      
            getMethod.releaseConnection();//.释放连接
        }
        return response;
    }

2、服务端接收参数的方法可以这样设置：

@GetMapping(value = {"/query/getData"})
    public Object  getQueryPartition( @RequestParam("parameter") String parameter) {
        String catName = "" ;
        String layName = "" ;
        String parName = "" ;
        Integer  version = -1 ;
        String productVersion = Constant.ProductVersionLastest ;
         if (! "".equals(parameter)){
              JSONObject jsonObject = JSONObject.parseObject(parameter);
              layerName = jsonObject.getString("layName");
              partitionName = jsonObject.getString("parName");
             if (StringUtils.isEmpty(layName)){
                 return new JSONObject();
             }
             if (StringUtils.isEmpty(parName)){
                 return new JSONObject();
             }
             if(jsonObject.containsKey("catName")){
                 catalogName = jsonObject.getString("catName");
             }
              if(jsonObject.containsKey("version")){
                  version = Integer.valueOf(jsonObject.getString("version"));
              }
             if(jsonObject.containsKey("productVersion")){
                 productVersion = jsonObject.getString("productVersion");
             }
         }
        //这里处理业务的代码省略
        return null;
    }