httpclient post/set请求

最新推荐文章于 2023-07-14 14:29:14 发布

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最新推荐文章于 2023-07-14 14:29:14 发布

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本文链接：https://blog.youkuaiyun.com/woshigaoshou980/article/details/48489579

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本文介绍了使用Java发送POST请求的方法，包括配置HttpClient、设置请求头、构建JSON参数并发送请求，最后处理响应状态。

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import java.io.IOException;
import java.io.InputStream;
import net.sf.json.JSONObject;
import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.HttpClientUtils;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;


/**
  * send post
  * @param postUrl
  * @return
  */
 private String sendPostMethod(String postUrl) {
  String resultMsg = "";
  int resultcode = HttpStatus.SC_INTERNAL_SERVER_ERROR;
  CloseableHttpClient httpClient = HttpClientBuilder.create().build();
  if (StringUtil.isNotEmpty(postUrl)) {
   try {
    HttpPost httpPost = new HttpPost(postUrl);
    httpPost.setHeader("Content-Type", "application/json");
    httpPost.setHeader("filename", "filename");
    
    //JSONObject jsonParam = JSONObject.fromObject(wsUser);  
    JSONObject jsonParam = new JSONObject();  
    jsonParam.put("username", "zhangsan");
    String param = new String((jsonParam.toString()).getBytes("utf-8"), "gbk");
    HttpEntity entity = new StringEntity(param);
    httpPost.setEntity(entity);
    CloseableHttpResponse response = httpClient.execute(httpPost);
    resultcode = response.getStatusLine().getStatusCode();
    HttpClientUtils.closeQuietly(response);
   } catch (IOException e) {
    e.printStackTrace();
   } finally {
    HttpClientUtils.closeQuietly(httpClient);
   }
  }

  if (resultcode != HttpStatus.SC_OK) {
   resultMsg = "成功";
  }

  return resultMsg;
 }

所需两个jar包下载：

http://download.youkuaiyun.com/detail/woshigaoshou980/9110381

http://download.youkuaiyun.com/detail/woshigaoshou980/9110397