https://www.cnblogs.com/mambahyw/p/7875142.html

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通过httpclient的post方法发送json参数进行接口测试。借鉴知乎上“云层”的提供的方法。

作者：云层

链接：https://www.zhihu.com/question/30878548/answer/121149629

来源：知乎

把要发送的json作为字符串传入body即可

public static String sendHttpPost(String url, String body) throws Exception {CloseableHttpClient httpClient = HttpClients.createDefault();HttpPost httpPost = new HttpPost(url);httpPost.addHeader("Content-Type", "application/json");httpPost.setEntity(new StringEntity(body));CloseableHttpResponse response = httpClient.execute(httpPost);System.out.println(response.getStatusLine().getStatusCode() + "\n");HttpEntity entity = response.getEntity();String responseContent = EntityUtils.toString(entity, "UTF-8"); System.out.println(responseContent);response.close();httpClient.close();return responseContent;}

我的测试代码示例：

public static void main(String[] args) {    //测试公司的API接口，将json当做一个字符串传入httppost的请求体    String result = null;    HttpClient client = HttpClients.createDefault();    URIBuilder builder = new URIBuilder();    URI uri = null;    try {        uri = builder.setScheme("http")                  .setHost("xxx.xxx.xxx.xxx:xxxx")                  .setPath("/api/authorize/login")                  .build();                HttpPost post = new HttpPost(uri);        //设置请求头        post.setHeader("Content-Type", "application/json");        String body = "{\"Key\": \"\",\"Secret\": \"\"}";        //设置请求体        post.setEntity(new StringEntity(body));        //获取返回信息        HttpResponse response = client.execute(post);        result = response.toString();    } catch (Exception e) {        System.out.println("接口请求失败"+e.getStackTrace());    }    System.out.println(result);}