CloseableHttpClient传输中文乱码

为了避免CloseableHttpClient传输中文乱码，可以在请求中设置字符编码为UTF-8。具体实现方法如下所示：

CloseableHttpClient httpClient = HttpClients.createDefault();
HttpPost httpPost = new HttpPost(url);
httpPost.setHeader("Content-Type", "application/json;charset=UTF-8");
StringEntity entity = new StringEntity(jsonstr, "UTF-8");
httpPost.setEntity(entity);
HttpResponse httpResponse = httpClient.execute(httpPost);

在上述代码中，我们通过设置请求头的Content-Type为application/json;charset=UTF-8来指定请求的字符编码为UTF-8。同时，我们还需要在设置请求实体时，将字符编码设置为UTF-8，这样就可以避免CloseableHttpClient传输中文乱码的问题。