Spring Boot调用api post接口

示例

public static String sendPost(String url, JSONObject jsonObject) {

        log.info("请求地址：{}", url);
        String body = "";
        // 创建httpclient对象
        CloseableHttpClient client = HttpClients.createDefault();

        CloseableHttpResponse response = null;
        // 创建post方式请求对象
        HttpPost httpPost = new HttpPost(url);
        // 装填参数
        StringEntity s = new StringEntity(jsonObject.toString(), "utf-8");
        s.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
        // 设置参数到请求对象中
        httpPost.setEntity(s);
        log.info("请求参数：{}", jsonObject.toString());

        // 设置header信息, 指定报文头【Content-type】 【User-Agent】
        httpPost.setHeader("Content-type", "application/json");
        httpPost.setHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
        try {
            // 执行请求操作，并拿到结果（同步阻塞）
            response = client.execute(httpPost);
            log.info("response 返回状态码：{}", response.getStatusLine().getStatusCode());
            if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK){
                // 获取结果实体
                HttpEntity entity = response.getEntity();
                if (entity != null) {
                    // 按指定编码转换结果实体为String类型
                    body = EntityUtils.toString(entity, "utf-8");
                    log.info("响应body:", body);
                }
                // 关闭流
                EntityUtils.consume(entity);
            }else{
                log.error("response 返回状态码异常：{}", response.getStatusLine().getStatusCode());
            }
            // 释放链接
            response.close();
        } catch (IOException e) {
            log.error("调用amf-sub api异常，{0}", e);
            e.printStackTrace();
        } finally {
            if (client != null) {
                try {
                    client.close();
                } catch (IOException e) {
                    log.error("关闭http client异常，{0}", e);
                    e.printStackTrace();
                }
            }
            if (response != null) {
                try {
                    response.close();
                } catch (IOException e) {
                    log.error("关闭http response异常，{0}", e);
                    e.printStackTrace();
                }
            }
        }
        return body;
    }

pom

<!-- fastjson -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.62</version>
        </dependency>
        <!-- fastjson End -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.7</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpcore -->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>
            <version>4.4.15</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5.13</version>
        </dependency>