java的json转成string

问题遇到的现象和发生背景

使用httpClient 发送post请求 但是参数全部被转换成JSON格式，根据url传递过去后，如何将其转换为String类型

问题相关代码，请勿粘贴截图

CloseableHttpClient httpClient = HttpClients.createDefault();
HttpPost httpPost = new HttpPost(url);
int result=0;

    List<BasicNameValuePair> pairList = new ArrayList<BasicNameValuePair>();
    for( Map.Entry<String,String> entry : params.entrySet() ){
        pairList.add(new BasicNameValuePair((String) entry.getKey(),(String) entry.getValue()));
    }
    CloseableHttpResponse httpResponse = null;
    try {
        httpPost.setEntity(new UrlEncodedFormEntity(pairList,"utf-8"));
        httpResponse = httpClient.execute(httpPost);

        if( httpResponse != null && httpResponse.getStatusLine().getStatusCode()==200 ){
            return 0;
        }
        HttpEntity httpEntity = httpResponse.getEntity();
        result = Integer.parseInt(EntityUtils.toString(httpEntity));
    }

public int add(String name,String address,String httpPort,String tcpPort,String sId){

    return result;
}

运行结果及报错内容

传的是 “测试”，过去后成为“测试”

我的解答思路和尝试过的方法

我想要达到的结果

将参数直接传递过去，不转换为JSON 或者接收到后将JSON转换为String类型

EntityUtils.toString(httpEntity, "UTF-8") ； 这样试试，可能是编码方式不一样的原因吧。

private static String doHttpPost(URI uri, HttpClient httpClient, List<NameValuePair> nvps, String charsetEncoding) {
    HttpPost httpPost = new HttpPost(uri);
    try {
        httpPost.setEntity(new UrlEncodedFormEntity(nvps, charsetEncoding));
        HttpResponse httpResponse = httpClient.execute(httpPost);
        InputStream in = httpResponse.getEntity().getContent();
        StringBuilder sb = new StringBuilder();
        BufferedReader reader = new BufferedReader(new InputStreamReader(in, charsetEncoding));
        for (String line = reader.readLine(); line != null; line = reader.readLine()) {
            sb.append(line);
        }
        in.close();
        return sb.toString();
    } catch (IOException e) {
        e.printStackTrace();
        throw ResultException.createResultException("get "+uri+"fail", e.getMessage());
    } finally {
        HttpClientUtils.closeQuietly(httpClient);
    }
}

是这个意思不

参考以下两文
https://blog.csdn.net/qq_37918817/article/details/85232821
https://blog.csdn.net/qq_37918817/article/details/87700350