如何使用rest api get方法检索pdf文件？

Question

enter code here

String getUrl =“ https：// xyz”;          HttpGet httpget = null;

     try {
         httpclient = HttpClients.createDefault();
         ResponseHandler<String> responseHandler = response -> {
                int status = response.getStatusLine().getStatusCode();
                HttpEntity resMsg2 = response.getEntity();
                if (status >= 200 && status < 300) {
                    HttpEntity entity = response.getEntity();
                    return entity != null ? EntityUtils.toString(entity) : null;
                } if (status >= 500) {
                       HttpEntity entity2 = response.getEntity();
                       return entity2 != null ? EntityUtils.toString(entity2) : null;
                   }
                 else {
                      System.out.println("resMsg :--"+resMsg2);
                       throw new ClientProtocolException("Unexpected response status SS : " + status);
                 }
            };
           JSONParser JSONparse = new JSONParser();
           httpget = new HttpGet(getUrl);
           httpget.addHeader("accept", "application/");



           String responseBody2 = httpclient.execute(httpget, responseHandler);


           System.out.println("value of response body:"+responseBody2);

     }
     catch(Exception e)
     {
         System.out.println(e);
     }
     finally {
         httpget.releaseConnection();

}

我要这样放下

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