HttpClient发送Post请求传递json、普通参数

首先引入依赖

        <dependency>
            <groupId>commons-httpclient</groupId>
            <artifactId>commons-httpclient</artifactId>
            <version>3.1</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.76</version>
        </dependency>

 

1、Post请求传json数据

        // 省略前面声明请求、设置Header等操作，直接从传递参数开始
        JSONObject json = new JSONObject();
　　　　　json.put("filePath","js");
　　　　　json.put("projectId","61020ccdfd33d86b6abe8745");
　　　　　json.put("type","fileFolder");
　　　　　
　　　　　// 将参数放到Post中
　　　　　// 通过new StringEntity()，可将Content-Type设置为text/plain类型或则json类型
        httpPost.setEntity(new StringEntity(json.toString(),"UTF-8"));

 

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import com.alibaba.fastjson.JSONObject;import org.apache.http.HttpEntity; import org.apache.http.NameValuePair; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.message.BasicNameValuePair; import org.apache.http.util.EntityUtils; import java.io.IOException; import java.util.ArrayList; import java.util.List;   /**  * @Author: yc  * @Description: HttpClient发送Post请求  * @Date: 2021/07/27/18:32  */ public class HttpClientUtil {       //发送请求的url     public static String url = "http://192.168.9.247:3080/co/cmd/deleteProject";       public static void deletePost() throws IOException {               // 获取HttpClient对象         CloseableHttpClient httpClient = HttpClients.createDefault();           // 声明Post请求         HttpPost httpPost = new HttpPost(url);           // 设置请求头，在Post请求中限制了浏览器后才能访问         httpPost.addHeader("User-Agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36");         httpPost.addHeader("Accept", "*/*");         httpPost.addHeader("Accept-Encoding", "gzip, deflate, br");         httpPost.addHeader("Content-Type", "application/json"); //        httpPost.addHeader("Content-Type", "application/x-www-form-urlencoded");         httpPost.addHeader("Accept-Language", "zh-CN,zh;q=0.9,en;q=0.8");         httpPost.addHeader("Connection", "keep-alive");                   // 设置token         //httpPost.addHeader("Authorization","eyJ0eXAiOiJKV1QiLCJhbGciOiJIDASDUzI1NiJ9.eyJleHAiOjE2Mjc0NTQzODYsInVzZXJuYW1lIjoiYWJjZCJ9.MYvNg03txeNm_KiI27fdS0KViVxWhLntDjBjiP44UYQDASCSACCSA");   　　　　　JSONObject json = new JSONObject(); 　　　　　json.put("filePath","js"); 　　　　　json.put("projectId","61020ccdfd33d86b6abe8745"); 　　　　　json.put("type","fileFolder"); 　　　　　 　　　　　// 发送 json 类型数据，通过new StringEntity()，可将Content-Type设置为text/plain类型         httpPost.setEntity(new StringEntity(json.toString(),"UTF-8"));   　　　　　// 设置参数（发送 普通参数 数据类型） 　　　　　/*         List<NameValuePair> parameters = new ArrayList<NameValuePair>();         for(String key:json.keySet()) {             parameters.add(new BasicNameValuePair(key, json.getString(key)));         }                   // 将Content-Type设置为application/x-www-form-urlencoded类型         UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(parameters, "UTF-8");         httpPost.setEntity(formEntity);         */           // 发送请求         CloseableHttpResponse response = httpClient.execute(httpPost);                   if (response.getStatusLine().getStatusCode() == 200) {             HttpEntity entity = response.getEntity();                           // 获取返回的信息             String string = EntityUtils.toString(entity, "UTF-8");             System.out.println(string);         }         else         {             System.out.println("删除失败，请重试！！！");         }           // 关闭response、HttpClient资源         response.close();         httpClient.close();     } }<br><br>

2、Post请求传普通参数表单传参数

        JSONObject json = new JSONObject();
　　　　　json.put("filePath","js");
　　　　　json.put("projectId","61020ccdfd33d86b6abe8745");
　　　　　json.put("type","fileFolder");

　　　　　// 设置参数
        List<NameValuePair> parameters = new ArrayList<NameValuePair>();
        for(String key:json.keySet()) {
            parameters.add(new BasicNameValuePair(key, json.getString(key)));
        }
        
        // 将Content-Type设置为application/x-www-form-urlencoded类型
        UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(parameters, "UTF-8");
        httpPost.setEntity(formEntity);

 

　　

原文来自：https://blog.csdn.net/qq_43758789/article/details/119222073