记录一个HttpClient请求

原创已于 2023-02-23 09:01:51 修改 · 233 阅读

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#http #java

于 2023-02-23 08:45:56 首次发布

该代码示例展示了如何使用ApacheHttpClient库向服务器发送一个应用/json类型的POST请求，构造JSON数据，设置请求头，并处理响应。

用HttpClient写一个application/json的post请求

import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpEntity;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import java.io.IOException;

public class PostXml {
    public static String doPost() throws IOException {
        String json = "";
        HttpClient httpclient = HttpClients.createDefault();
        HttpPost httpPost = new HttpPost("http://127.0.0.1:8966/ms/");
        StringEntity reqEntity = new StringEntity(
                json, ContentType.create("application/json", "utf-8"));
        httpPost.setEntity(reqEntity);
        httpPost.addHeader("Accept", "application/json");
        CloseableHttpResponse response = (CloseableHttpResponse) httpclient.execute(
                httpPost);
        JSONObject object = null;
        try {
            HttpEntity entity = response.getEntity();
            
            if (null != entity) {
                String result = EntityUtils.toString(entity,"UTF-8");
                object = JSONObject.parseObject(result);
                System.out.println(object);
            }
            EntityUtils.consume(entity);
        } finally {
            response.close();
        }
        return object.toJSONString();
    }
}