项目报 ClassDefFoundError: org/apache/http/ssl/SSLContexts 错误的解决办法（亲测）

我的代码：

HttpGet httpGet = new HttpGet("https://xxxxxxxxxx");
//设置请求器的配置
HttpClient httpClient = HttpClients.createDefault();
HttpResponse res = httpClient.execute(httpGet);
HttpEntity entity = res.getEntity();
String result = EntityUtils.toString(entity, "UTF-8");
response.getWriter().append(result);

调用HttpClients报错：

报错jar包为：

        org.apache.httpcomponents
        httpclient
        4.5.5

        

        org.apache.httpcomponents
        httpcore
        4.3.2

解决方法：
换高版本的jar包，如下：

        org.apache.httpcomponents
        httpclient
        4.5.5

        

        org.apache.httpcomponents
        httpcore
        4.3.2

重新运行项目后，执行方法不报错，完美解决！