bug记录（1）

来源：互联网发布：.net程序员面试宝典编辑：程序博客网时间：2024/06/07 06:49

第一个：

在编写一个远程调用接口时，远程传过来的是一个PDF报表文件，PrintWrite打印出来。在用httpclient远程访问时，发现打印报表为空白。

public String postreport(String url, Map<String, String> params) {        String resp = null;        CloseableHttpClient httpclient = HttpClients.createDefault();        HttpPost httppost = new HttpPost(url);        List<NameValuePair> formparams = new ArrayList<NameValuePair>();        Set<String> keySet = params.keySet();        for (String key : keySet) {            formparams.add(new BasicNameValuePair(key, params.get(key)));        }        try {            UrlEncodedFormEntity uefEntity = new UrlEncodedFormEntity(formparams, ApplicationConstant.UTF_8);            httppost.addHeader("Content-type", "application/x-www-form-urlencoded; charset=utf-8");            httppost.setHeader("Accept", "application/json");            uefEntity.setContentType("text/json");            httppost.setEntity(uefEntity);            httppost.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 600000);            CloseableHttpResponse response = httpclient.execute(httppost);            HttpEntity entity = response.getEntity();            if (entity != null) {                //这里是问题所在。去掉后面的编码就能正常打印报表                <span style="color:#FF0000;">resp = EntityUtils.toString(entity, ApplicationConstant.UTF_8);</span>            }            response.close();        } catch (IOException e) {            LOGGER.error("HttpClientUtil.post(),{}", e);            resp = ApplicationConstant.FAIL_CODE;        } finally {            try {                httpclient.close();            } catch (IOException e) {                LOGGER.error("HttpClientUtil.post(),{}", e);                resp = ApplicationConstant.FAIL_CODE;            }        }        return resp;    }

第二个：

请求远程Jasperreports报表接口时，每次调用发现接口运行了2次。研究发现这与浏览器下载机制有关。Google和火狐都会出现这种情况，而IE却不会。先这样，下次在具体补充。

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