Java | httpClient请求put方法

概述

目前很多公司项目大多是微服务开发，接口规范一般会采用restful格式，所以请求方式不局限于post和get，还有put和delete。
所以在用httpClient请求的时候，会遇到请求方式的问题，因为非微服务项目只有post和get两种请求方。所以这里做了一个简单的封装。

主要采用httpPost和httpPut的抽象父类 HttpEntityEnclosingRequestBase 进行封装。

---

支持post put分别对应的 K-V、json方式：

/**
     * 发送 POST 请求（HTTP），K-V形式
     */
    public static String doPostByMap(String apiUrl, Map params, String cookie) {
        return doXwwwFormUrlencoded(apiUrl,params,cookie,new HttpPost(apiUrl));
    }

    /**
     * 发送 PUT 请求（HTTP），K-V形式
     */
    public static String doPutByMap(String apiUrl, Map params, String cookie) {
        return doXwwwFormUrlencoded(apiUrl,params,cookie,new HttpPut(apiUrl));
    }


    /**
     *
     * 发送 POST 请求（HTTP），json形式
     */
    public static String postJson(String url, String params, String cookie) throws IOException {
        return doApplicationJson(url, params,cookie,new HttpPost(url));
    }

    /**
     *
     * 发送 PUT 请求（HTTP），json形式
     */

    public static String putJson(String url, String params, String cookie) throws IOException {
        return doApplicationJson(url, params,cookie,new HttpPut(url));
    }

参数为 K-V 形式：

 public static String doXwwwFormUrlencoded(String apiUrl, Map params, String cookie,HttpEntityEnclosingRequestBase httpRequest){

        String httpStr = null;
        CloseableHttpResponse response = null;

        try {
            List pairList = new ArrayList(params.size());
            for (Map.Entry entry : params.entrySet()) {
                NameValuePair pair = new BasicNameValuePair(entry.getKey(), entry.getValue().toString());
                pairList.add(pair);
            }
            if (StringUtils.isNotEmpty(cookie)) {
                httpRequest.setHeader("Cookie", SystemConstant.IYB_LOGIN_COOKIE_KEY + "=" + cookie);
            }
            httpRequest.setEntity(new UrlEncodedFormEntity(pairList, Charset.forName("UTF-8")));
            response = getHttpClient(apiUrl).execute(httpRequest, HttpClientContext.create());
            System.out.println(response.toString());
            HttpEntity entity = response.getEntity();
            httpStr = EntityUtils.toString(entity, "UTF-8");
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (response != null) {
                try {
                    EntityUtils.consume(response.getEntity());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return httpStr;
    }

参数为 json 形式：

 private static String doApplicationJson(String url, String params,String cookie,HttpEntityEnclosingRequestBase httpRequest) {
        initConfig(httpRequest);
        CloseableHttpResponse response = null;
        try {
            log.info("url:{}, params: {}", url, params);

            HttpEntity httpEntity = new StringEntity(params, ContentType.APPLICATION_JSON);
            httpRequest.setEntity(httpEntity);
            if (StringUtils.isNotEmpty(cookie)) {
                httpRequest.setHeader("Cookie", SystemConstant.IYB_LOGIN_COOKIE_KEY + "=" + cookie);
            }
            response = getHttpClient(url).execute(httpRequest, HttpClientContext.create());
            HttpEntity entity = response.getEntity();
            String result = EntityUtils.toString(entity, "utf-8");
            EntityUtils.consume(entity);
            return result;
        } catch (Exception e) {
            log.error(e.getMessage());
        } finally {
            try {
                if (response != null)
                    response.close();
            } catch (Exception e) {
                log.error(e.getMessage());
            }
        }
        return null;
    }