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/Java微信公眾號開發進階
Exception in thread "main" java.lang.NullPointerException
2017-09-05
源自:Java微信公眾號開發進階 3-2
正在回答
public?static?JSONObject?doPost(String?url,String?outUrl){ JSONObject?jsonObject=null; CloseableHttpClient?httpClient?=?HttpClients.createDefault(); HttpPost?httpPost?=?new?HttpPost(); httpPost.setEntity(new?StringEntity(outUrl,"UTF-8")); URI?uri?=?null; try?{ uri?=?new?URI(url);//視頻中忘了加url,所以輸出httpPost,會顯示POST?null?HTTP/1.1 }? catch?(URISyntaxException?e1)?{ e1.printStackTrace(); } httpPost.setURI(uri); System.out.println(httpPost);//POST?null?HTTP/1.1 try?{ HttpResponse?reponse?=?httpClient.execute(httpPost); System.out.println("d"); String?result?=?EntityUtils.toString(reponse.getEntity(),"UTF-8"); System.out.println(result); jsonObject=JSONObject.fromObject(result); System.out.println(jsonObject); }? catch?(ClientProtocolException?e)?{ e.printStackTrace(); }? catch?(IOException?e)?{ e.printStackTrace(); } return?jsonObject; }
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