Http请求工具【添加请求头】

待我称王封你为后i 2023-06-15 09:53 19阅读 0赞

### 文章目录 ###

*   *   *  一、工具代码：

### 一、工具代码： ###

package *.*;
    
    
    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.HttpGet;
    import org.apache.http.client.methods.HttpPost;
    import org.apache.http.client.utils.URIBuilder;
    import org.apache.http.entity.ContentType;
    import org.apache.http.entity.StringEntity;
    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.net.URI;
    import java.util.ArrayList;
    import java.util.List;
    import java.util.Map;
    
    /** * @description: Http客户端工具类 * @title: HttpClientUtil * @projectName： * @author： xy * @date： 2019/11/11/10:43 * @version： 1.0 */
    
    public class HttpClientUtil { 
        /** * 带参数的get请求 * @param url * @param param * @return String */
        public static String doGet(String url, Map<String, String> param) { 
            // 创建Httpclient对象
            CloseableHttpClient httpclient = HttpClients.createDefault();
    
            String resultString = "";
            CloseableHttpResponse response = null;
            try { 
                // 创建uri
                URIBuilder builder = new URIBuilder(url);
                if (param != null) { 
                    for (String key : param.keySet()) { 
                        builder.addParameter(key, param.get(key));
                    }
                }
                URI uri = builder.build();
                // 创建http GET请求
                HttpGet httpGet = new HttpGet(uri);
                // 执行请求
                response = httpclient.execute(httpGet);
                // 判断返回状态是否为200
                if (response.getStatusLine().getStatusCode() == 200) { 
                    resultString = EntityUtils.toString(response.getEntity(), "UTF-8");
                }
            } catch (Exception e) { 
                e.printStackTrace();
            } finally { 
                try { 
                    if (response != null) { 
                        response.close();
                    }
                    httpclient.close();
                } catch (IOException e) { 
                    e.printStackTrace();
                }
            }
            return resultString;
        }
    
        /** * 不带参数的get请求 * @param url * @return String */
        public static String doGet(String url) { 
            return doGet(url, null);
        }
    
        /** * 带参数的post请求 * @param url * @param param * @return String */
        public static String doPost(String url, Map<String, String> param) { 
            // 创建Httpclient对象
            CloseableHttpClient httpClient = HttpClients.createDefault();
            CloseableHttpResponse response = null;
            String resultString = "";
            try { 
                // 创建Http Post请求
                HttpPost httpPost = new HttpPost(url);
                // 创建参数列表
                if (param != null) { 
                    List<NameValuePair> paramList = new ArrayList<>();
                    for (String key : param.keySet()) { 
                        paramList.add(new BasicNameValuePair(key, param.get(key)));
                    }
                    // 模拟表单
                    UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList);
                    httpPost.setEntity(entity);
                }
                // 执行http请求
                response = httpClient.execute(httpPost);
                resultString = EntityUtils.toString(response.getEntity(), "utf-8");
            } catch (Exception e) { 
                e.printStackTrace();
            } finally { 
                try { 
                    response.close();
                } catch (IOException e) { 
                    e.printStackTrace();
                }
            }
            return resultString;
        }
    
        /** * 不带参数的post请求 * @param url * @return String */
        public static String doPost(String url) { 
            return doPost(url, null);
        }
    
        /** * 传送json类型的post请求 * @param url * @param json * @return String */
        public static String doPostJson(String url, String json) { 
            // 创建Httpclient对象
            CloseableHttpClient httpClient = HttpClients.createDefault();
            CloseableHttpResponse response = null;
            String resultString = "";
            try { 
                // 创建Http Post请求
                HttpPost httpPost = new HttpPost(url);
                // 创建请求内容
                StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
                httpPost.setEntity(entity);
                // 执行http请求
                response = httpClient.execute(httpPost);
                resultString = EntityUtils.toString(response.getEntity(), "utf-8");
            } catch (Exception e) { 
                e.printStackTrace();
            } finally { 
                try { 
                    response.close();
                } catch (IOException e) { 
                    e.printStackTrace();
                }
            }
            return resultString;
        }
    
        /** * 传送json类型的post请求,请求头添加token * @param url * @param json * @return String */
        public static String doPostJsonAddToken(String url, String json,String token) { 
            // 创建Httpclient对象
            CloseableHttpClient httpClient = HttpClients.createDefault();
            CloseableHttpResponse response = null;
            String resultString = "";
            try { 
                // 创建Http Post请求
                HttpPost httpPost = new HttpPost(url);
    
                httpPost.addHeader("token",token);
                // 创建请求内容
                StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
    
                httpPost.setEntity(entity);
                // 执行http请求
                response = httpClient.execute(httpPost);
                resultString = EntityUtils.toString(response.getEntity(), "utf-8");
                System.out.println(resultString);
            } catch (Exception e) { 
                e.printStackTrace();
            } finally { 
                try { 
                    response.close();
                } catch (IOException e) { 
                    e.printStackTrace();
                }
            }
            return resultString;
        }
    }
    
    /** * 传送json类型的post请求 * @param url * @param json * @return String */
        public static String doPostFormUrlEncoded(String url, String json) { 
            // 创建Httpclient对象
            CloseableHttpClient httpClient = HttpClients.createDefault();
            CloseableHttpResponse response = null;
            String resultString = "";
            try { 
                // 创建Http Post请求
                HttpPost httpPost = new HttpPost(url);
    
                // 创建请求内容
                StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
    
                httpPost.setEntity(entity);
                // 执行http请求
                response = httpClient.execute(httpPost);
                resultString = EntityUtils.toString(response.getEntity(), "utf-8");
            } catch (Exception e) { 
                e.printStackTrace();
            } finally { 
                try { 
                    response.close();
                } catch (IOException e) { 
                    e.printStackTrace();
                }
            }
            return resultString;
        }
    /** * 传送json类型的post请求 * @param url * @param json * @return String */
        public static String doPostJsonAddSignature(String url, String json,String signature) { 
            // 创建Httpclient对象
            CloseableHttpClient httpClient = HttpClients.createDefault();
            CloseableHttpResponse response = null;
            String resultString = "";
            try { 
                // 创建Http Post请求
                HttpPost httpPost = new HttpPost(url);
    
                httpPost.addHeader("signature",signature);
                // 创建请求内容
                StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
    
                httpPost.setEntity(entity);
                // 执行http请求
                response = httpClient.execute(httpPost);
                resultString = EntityUtils.toString(response.getEntity(), "utf-8");
            } catch (Exception e) { 
                e.printStackTrace();
            } finally { 
                try { 
                    response.close();
                } catch (IOException e) { 
                    e.printStackTrace();
                }
            }
            return resultString;
        }

> 该工具参考网上资料，自己添加了请求头添加token 的方法。 配合对象转map工具解析入参，也可以自己手动put key value。

*  [MapObject转换工具链接 点击跳转][MapObject_]

[MapObject_]: https://blog.csdn.net/YangzaiLeHeHe/article/details/103189228