HttpClient跨域请求post

service层

@Override
public Map<String, Object> selectCurrentProgress(String branchesId,String businessId) throws Exception {
//用于结束返回映射结果
Map<String ,Object> map=new HashMap<String,Object>();
//用于判断是否返回成功
int result=0;
???????// 创建默认的httpClient实例. ???
???????CloseableHttpClient httpclient = HttpClients.createDefault(); ?
???????// 创建httppost ???
???????HttpPost httppost = new HttpPost("请求地址"); ?
???????// 创建参数队列 ???
???????List<NameValuePair> formparams = new ArrayList<NameValuePair>(); ?
???????formparams.add(new BasicNameValuePair("branchesId", branchesId));
???????formparams.add(new BasicNameValuePair("businessId", businessId));
???????UrlEncodedFormEntity uefEntity; ?
???????try { ?
???????????uefEntity = new UrlEncodedFormEntity(formparams, "UTF-8"); ?
???????????httppost.setEntity(uefEntity); ?
???????????System.out.println("executing request " + httppost.getURI()); ?
???????????CloseableHttpResponse response = httpclient.execute(httppost); ?
???????????try { ?
???????????????HttpEntity entity = response.getEntity(); ?
???????????????if (entity != null) {
???????????????String jsonStr=EntityUtils.toString(entity, "UTF-8");
???????????????JSONObject jsonObj=JSONObject.parseObject(jsonStr);
???????????????if(jsonObj.getInteger("Code")==0){
???????????????result=1;
???????????????JSONObject dataJSONObj=jsonObj.getJSONObject("Data");
???????????????Integer waitingNumber=dataJSONObj.getInteger("要在页面显示的参数1");
???????????????Integer remainderNumber=dataJSONObj.getInteger("要在页面显示的参数2");
???????????????String estimateWaitingTime=dataJSONObj.getString("要在页面显示的参数3");
???????????????map.put("waitingNumber", waitingNumber);
???????????????map.put("remainderNumber", remainderNumber);
???????????????map.put("EstimateWaitingTime", estimateWaitingTime);
???????????????}
???????????????????System.out.println("--------------------------------------"); ?
??????????????????// System.out.println("Response content: " + EntityUtils.toString(entity, "UTF-8")); ?
???????????????????System.out.println("--------------------------------------"); ?
???????????????}
???????????} finally {
???????????????response.close(); ?
???????????} ?
???????} catch (ClientProtocolException e) { ?
???????????e.printStackTrace(); ?
???????} catch (UnsupportedEncodingException e1) { ?
???????????e1.printStackTrace(); ?
???????} catch (IOException e) { ?
???????????e.printStackTrace(); ?
???????} finally { ?
???????????// 关闭连接,释放资源 ???
???????????try { ?
???????????????httpclient.close(); ?
???????????} catch (IOException e) { ?
???????????????e.printStackTrace(); ?
???????????} ?
???????} ?
???map.put("result", result);
return map;
}

Controller层

@RequestMapping("")
@ResponseBody
public Map<String, Object> selectCurrentProgress(String branchesId,String businessId){
Map<String, Object> map = new HashMap<String,Object>();
try {
map = keywordsService.selectCurrentProgress( branchesId, businessId);
} catch (Exception e) {
map.put("result", 1);
map.put("message", "异常");
e.printStackTrace();
}
return map;
}

第一次写博客，写的不是很好，请见谅