HttpClient工具类

分手后的思念是犯贱 2024-05-05 07:51 7阅读 0赞

import org.apache.http.client.ClientProtocolException;
    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.methods.HttpRequestBase;
    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.nio.charset.Charset;
    import java.util.ArrayList;
    import java.util.Map;
    import java.util.Set;
    
    public class HttpUtil {
        public static String doGet(String url) throws Exception {
            HttpGet httpGet = new HttpGet(url);
            return execute(httpGet);
        }
    
        public static String doPost(String url, Map<String, String> param) throws Exception {
            HttpPost httpPost = new HttpPost(url);
            ArrayList<BasicNameValuePair> arrayList = new ArrayList<BasicNameValuePair>();
            Set<String> keySet = param.keySet();
            for (String key : keySet) {
                arrayList.add(new BasicNameValuePair(key, param.get(key)));
            }
            httpPost.setEntity(new UrlEncodedFormEntity(arrayList));
            return execute(httpPost);
        }
    
        private static String execute(HttpRequestBase request) throws IOException, ClientProtocolException {
            CloseableHttpClient httpClient = HttpClients.createDefault();
            CloseableHttpResponse response = httpClient.execute(request);
            if (200 == response.getStatusLine().getStatusCode()) {
                return EntityUtils.toString(response.getEntity(), Charset.forName("utf-8"));
            } else {
                System.out.println(EntityUtils.toString(response.getEntity(), Charset.forName("utf-8")));
            }
            return "";
        }
    
    }

/**
     * 将对象数据转换成Map
     * @param obj
     * @return
     */
    private static Map<String, String> objectToMap(Object obj) {
        Map<String, String> map = new HashMap<>();
        Field[] fields = obj.getClass().getDeclaredFields();
        int len = fields.length;
        for(int i = 0; i < len ; i++){
            String varName = fields[i].getName();
            try {
                //检查是否可以访问
                boolean accessFlag = fields[i].isAccessible();
                fields[i].setAccessible(true);
                Object o = fields[i].get(obj);
                if(o != null){
                    map.put(varName, o.toString());
                }
                fields[i].setAccessible(accessFlag);
            } catch (IllegalArgumentException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }
        return map;
    }