java.io.IOException: Attempted read from closed stream

代碼如下，執行的時候提示“java.io.IOException: Attempted read from closed stream.”

 @Test
    public void test_temp(){
        String url="http://ssov1.59iedu.com/login?TARGET=http://med.ihbedu.com:80/gateway/web/sso/auth&js&callback=loginThen&1470491151264&nocache=1470491171451";
        this.HttpGet(url);

    }
    public void HttpGet(String url) {
        CloseableHttpClient httpClient = HttpClients.createDefault();//建立httpclient
        HttpGet httpGet = new HttpGet(url);//建立httpget
        System.out.println("get請求的地址：" + httpGet.getURI());
        try {
            CloseableHttpResponse response = httpClient.execute(httpGet);//執行get請求，並結果保存
            System.out.println("get請求返回的狀態碼：" + response.getStatusLine().getStatusCode());
            HttpEntity httpEntity = response.getEntity();//將保存的response轉為實體
            try {

                if (httpEntity != null) {
                    {
                        System.out.println("get請求返回的response值：" + EntityUtils.toString(httpEntity));
                        System.out.println("lt的值："+EntityUtils.toString(httpEntity).split("lt:\"")[1].split("\",")[0]);
                    }
                }
            } finally {
                EntityUtils.consume(httpEntity);//關閉實體
                response.close();//關閉response
            }

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                httpClient.close();//關閉httpclient
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

原因是如下特別指出我的腳本中以下2個輸出，這個輸出中調用了2次 EntityUtils.toString(httpEntity) ，而根據httpclient的官方說明中，EntityUtils.toString(httpEntity) 這個被調用一次后就會自動銷毀，而我調用了2次所有就報錯了

System.out.println("get請求返回的response值：" + EntityUtils.toString(httpEntity));
System.out.println("lt的值："+EntityUtils.toString(httpEntity).split("lt:\"")[1].split("\",")[0]);

於是把這2個輸出腳本改為如下即可，只要調用一次就好

String responseStr=EntityUtils.toString(httpEntity);
System.out.println("get請求返回的response值：" + responseStr);
String str=responseStr.split("lt:\"")[1].split("\",")[0];
System.out.println("lt的值："+str);