httpClient中post请求并传送form-data数据（同样适用于Raw的application-json格式）

httpClient模仿Postman的form-data格式

话不多说，直接上代码

依赖包：

　　　　<!--集成httpclient-->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpmime</artifactId>
        </dependency>

适用于post请求并传送form-data数据（同样适用于Raw类型的application-json格式）

public static String postParams(String url, Map<String, String> params) {
        SSLContext sslcontext = createIgnoreVerifySSL();
        // 设置协议http和https对应的处理socket链接工厂的对象
        Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
                .register("http", PlainConnectionSocketFactory.INSTANCE)
                .register("https", new SSLConnectionSocketFactory(sslcontext))
                .build();
        PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);

        //创建自定义的httpclient对象
        CloseableHttpClient client = HttpClients.custom().setConnectionManager(connManager).build();
        HttpPost post = new HttpPost(url);
        CloseableHttpResponse res = null;
        try {
            List<NameValuePair> nvps = new ArrayList<NameValuePair>();
            Set<String> keySet = params.keySet();
            for (String key : keySet) {
                nvps.add(new BasicNameValuePair(key, params.get(key)));
            }
            post.setEntity(new UrlEncodedFormEntity(nvps, "utf-8"));
            res = client.execute(post);
            HttpEntity entity = res.getEntity();
            return EntityUtils.toString(entity, "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                res.close();
                client.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return "";
    }

再来个head传参版：

public static String postMethod(String url, String params, String contentType, String head) {
        //创建HttpClientBuilder
        HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
        //HttpClient
        CloseableHttpClient client = httpClientBuilder.build();
        client = (CloseableHttpClient) wrapClient(client);

        HttpPost post = new HttpPost(url);
        CloseableHttpResponse res = null;
        try {
            StringEntity s = new StringEntity(params, "UTF-8");
            if (StringUtils.isBlank(contentType)) {
                s.setContentType("application/json");
            }
            s.setContentType(contentType);
            s.setContentEncoding("utf-8");
            post.setEntity(s);

            if (StringUtils.isNotBlank(head)) {
                post.addHeader("Authorization", head); //依据你自己的head传参进行改造
            }

            res = client.execute(post);
            HttpEntity entity = res.getEntity();
            return EntityUtils.toString(entity, "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                res.close();
                client.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return "";
    }

业务层代码调用示例：

Map<String, String> params = new HashMap<>();
params.put("参数1",xxx.toString());
params.put("参数2",xxx.toString());
String result = postParams(你的url,params);