httpPost的两种方式

1，post-Body流和post参数，以下客户端代码和服务端代码可共用

　　客户端代码
/**
* post 方法
* 抛送给EDI
* @param url http://127.0.0.1:9003/api/edi/csm/csmReturnSubConBody?customerId=Fotile_CSM&api=csmreturnsub_confirm&id=6006
* @param jsonParam xml报文结构
* @return
*/
String httpPost45(String url, String jsonParam) {
//url?后面的即为post parmas 参数，bodu 放在数据流中进行传输
CloseableHttpClient httpclient = HttpClients.createDefault()
// HttpGet httpGet = new HttpGet(url)
HttpPost post=new HttpPost(url)
//httpClient 4.5版本的超时参数配置
RequestConfig requestConfig = RequestConfig.custom()
.setConnectTimeout(50000).setConnectionRequestTimeout(50000)
.setSocketTimeout(50000).build()
post.setConfig(requestConfig)
//往BODY里填充数据主体
StringEntity entitys=new StringEntity(jsonParam.toString(), "utf-8")
entitys.setContentEncoding("UTF-8")
entitys.setContentType("application/xml")
post.setEntity(entitys)
HttpResponse response = httpclient.execute(post)
// System.out.println("得到的结果:" + response.getStatusLine())//得到请求结果
String str = EntityUtils.toString(response.getEntity())//得到请求回来的数据
return str
}

客户端代码二=========================================

如果只是简单拼接进url是行不通的，因为我们都知道URLEncoder，对url字符集编码设置，所以需要对所有的值进行字符集编码设置，最终我们封装成了如下post方法支持url拼接入相应的请求参数：

POST_URL:请求url

urlParam:如上需要封装进url的参数

body：普通需要传递的参数

 public static String httpURLConnectionPOST (String POST_URL,Map<String, String> urlParam,String body) {

        CloseableHttpResponse response = null;
        try {
            RequestConfig defaultRequestConfig = RequestConfig.custom()
                    .setSocketTimeout(6000)
                    .setConnectTimeout(6000)
                    .setConnectionRequestTimeout(6000)
                    .build();
　　　　　　　　//httpclient
            CloseableHttpClient httpclient = HttpClients.custom().setDefaultRequestConfig(defaultRequestConfig).build();
//            HttpPost httpPost = new HttpPost(POST_URL);
            StringBuilder param=new StringBuilder("");
//将要拼接的参数urlencode
            for (String key:urlParam.keySet()){
                param.append(key + "=" + URLEncoder.encode(urlParam.get(key), "UTF-8") + "&");
            }
//pingjie
            HttpPost httpPost = new HttpPost(POST_URL+param.toString());
//请求参数设置
            if(com.sf.ccsp.common.util.StringUtils.isNotEmpty(body)){
                StringEntity entity=new StringEntity(body, ContentType.APPLICATION_JSON);
                httpPost.setEntity(entity);
            }
            response = httpclient.execute(httpPost);
            HttpEntity entity = response.getEntity();
            return EntityUtils.toString(entity, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            logger.error(e.getMessage(), e);
        } catch (ClientProtocolException e) {
            logger.error(e.getMessage(), e);
        } catch (IOException e) {
            logger.error(e.getMessage(), e);
        } catch (Exception e){
            System.out.println(e);
        }finally {
            if (response != null) {
                try {
                    response.close();
                } catch (IOException e) {
                    logger.error(e.getMessage(), e);
                }
            }

        }

        return null;

    }

服务端代码

@ResponseBody
@RequestMapping(value = "csmReturnSubConBody", method = RequestMethod.POST, produces = "application/xml")
ResponseMessage csmReturnSubConBody(HttpServletRequest request, HttpServletResponse response,
@RequestParam Map<String, String> params) {

//params为客户端URL?后面的参数集，同理，也可以将bodu放到参数集里，进行传输
CustomerInfo customerInfo = erpSetting.getCustomerInfo(params.customerId as String)
if (!customerInfo) return
ApiInfo apiInfo = erpSetting.getApiInfo(customerInfo, params.api as String)
if (!apiInfo) return
String body = readBody(request)//这里去解析post流里的body数据
ResponseMessage rsp = csmSvc.convertBodyAndSendErpRetu(apiInfo, customerInfo, body, "xml", params.id as Object, null)

return rsp
}

对于post参数流，服务端，可以这样取值

String body = params.keySet()[0] + "=" + params[params.keySet()[0]].toString()

params.keySet()[0]得到key

params[params.keySet()[0]].toString()得到第一个key的value

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