httpclient中post提交json和map参数，及Springmvc接收

1、jar：httpclient-4.5.2.jar

2.1、请求的json数据

public static String doPost(String url, String params) throws Exception {

    CloseableHttpClient httpclient = HttpClients.createDefault();
    HttpPost httpPost = new HttpPost(url);
    httpPost.setHeader("Accept", "application/json");
    httpPost.setHeader("Content-Type", "application/json");
    StringEntity entity = new StringEntity(params, "UTF-8");
    httpPost.setEntity(entity);
    CloseableHttpResponse response = null;

    try {
        response = httpclient.execute(httpPost);
        StatusLine status = response.getStatusLine();
        int state = status.getStatusCode();
        if (state == HttpStatus.SC_OK) {
            HttpEntity responseEntity = response.getEntity();
            return EntityUtils.toString(responseEntity);
        }
        else{
            logger.error("ProjectSendUtil.doPost.ErrorState："+state);
        }
    } catch (Exception e) {
    	logger.error("ProjectSendUtil.doPost.ErrorMessage:" + e.getMessage());
    }
    finally {
    	try {
            response.close();
            httpclient.close();
        } catch (Exception e) {
            logger.error("ProjectSendUtil.doPost.ErrorMessage:" + e.getMessage());
        }
    }
    return null;
}

2.2、请求的map数据

public static String mapPost(String url, Map<String,Object> map){
	CloseableHttpClient httpClient = HttpClients.createDefault();
	HttpPost httpPost = new HttpPost(url);
	//设置参数
	List<NameValuePair> list = new ArrayList<NameValuePair>();
	Iterator iterator = map.entrySet().iterator();
	while(iterator.hasNext()){
		Map.Entry<String,String> elem = (Map.Entry<String, String>) iterator.next();
		list.add(new BasicNameValuePair(elem.getKey(),String.valueOf(elem.getValue())));
	}
	String result = null;
	try{
		UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, "UTF-8");
		httpPost.setEntity(entity);
		HttpResponse response = httpClient.execute(httpPost);
		if(response != null){
			HttpEntity resEntity = response.getEntity();
			if(resEntity != null){
				result = EntityUtils.toString(resEntity, "UTF-8");
			}
		}
	}catch(Exception ex){
		ex.printStackTrace();
	}
	return result;
}

3、Springmvc接收

@RequestMapping(value="/postJson",method = RequestMethod.POST,produces="application/json;charset=UTF-8")
@ResponseBody
public String postJson(@RequestBody Object aa,HttpServletRequest request)
{		
	System.out.println(aa);
	return "success";
}