Java httppost没有'；不要更改内容类型

这是我的代码：

HttpClient client = HttpClientBuilder.create().build();
HttpPost httpPost = new HttpPost(postUrl);
httpPost.setHeader("Content-Type", MediaType.APPLICATION_JSON);
StringEntity bodyEntity = new StringEntity("{\"name\":\"hello\"}");
bodyEntity.setContentType(MediaType.APPLICATION_JSON);
httpPost.setEntity(bodyEntity);

HttpResponse response = client.execute(httpPost);
String responseString = new BasicResponseHandler().handleResponse(response);
System.out.println(responseString);

我一直收到错误

不支持的内容类型

，虽然我的web服务只接受

json

，但我检查了httpPost内容类型，它总是

纯文本

，为什么它不改为json请？

试试这段代码

 public static void HttpPost() {
        try {

            HttpClient client = new DefaultHttpClient();
            HttpPost post = new HttpPost(
                    "https://api.website.net/auth/token");
            StringEntity input = new StringEntity("{\"name\":\"hello\"}");
            post.setEntity(input);
            HttpResponse response = client.execute(post);
            BufferedReader rd = new BufferedReader(new InputStreamReader(
                    response.getEntity().getContent()));
            String line = "";
            while ((line = rd.readLine()) != null) {
                System.out.println(line);
            }
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }

---

这怎么能解决我的问题？内容类型在哪里？