post、raw、json调用第三方接口

1、调用第三方接口，对方接口文档写到”请求方式 post json格式、请求参数 json格式“，看不懂，就用postMan试试看。发现只有一种方式能调用通，

2、

3、Content-Type:application/json

4、根据上面的方式，所有写了下面的方法：

/**
 *
 * @param url 接口地址
 * @param putData JSONString，不是单纯的字符串
 * @param encoding 一般就传“UTF-8”即可
 * @return
 */
public static String doPostJson(String url, String putData, String encoding) {
    String body = "";
    CloseableHttpResponse response = null;
    CloseableHttpClient client = HttpClients.createDefault();
    // 向指定资源位置上传内容
    HttpPost httpPost = new HttpPost(url);
    httpPost.addHeader(HttpHeaders.CONTENT_TYPE, "application/json;charset=utf-8");
    httpPost.setHeader( HttpHeaders.ACCEPT,"application/json");
    httpPost.setEntity(new StringEntity(putData, Charset.forName("UTF-8")));
    try {
        response = client.execute(httpPost);
        // 通过response中的getEntity()方法获取返回值
        HttpEntity entity = response.getEntity();
        if (entity != null) {
            body = EntityUtils.toString(entity, encoding);
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        httpPost.abort();
        if (response != null) {
            EntityUtils.consumeQuietly(response.getEntity());
        }
    }
    return body;
}

5、需要的包

import org.apache.http.HttpEntity;
import org.apache.http.HttpHeaders;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import java.nio.charset.Charset;

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpcore</artifactId>
    <version>4.4.14</version>
</dependency>