HttpClient工具类

package org.jeecg.modules.utils;

import com.alibaba.fastjson.JSONObject;
import org.apache.commons.codec.binary.Base64;
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.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.util.EntityUtils;

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.Map;
import java.util.Set;

/**
 * @author feilong
 * @date 2023/8/17
 */
public class WXHttpUtil {


    public static String doPostJson(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.setHeader("Authorization", token);
            // 创建请求内容
            StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
            System.out.println(entity.toString());
            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) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

        return resultString;
    }

    public static String sendGet(String url, Map headMap){
        // 创建Httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 创建Http get请求
            HttpGet httpGet = new HttpGet(url);
            if(!headMap.isEmpty()){
                Set nameSet = headMap.keySet();
                for(String name:nameSet){
                    httpGet.addHeader(name,headMap.get(name));
                }

            }
            // 执行http请求
            response = httpClient.execute(httpGet);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        return resultString;
    }
    public static String sendGet(String url){
        // 创建Httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 创建Http get请求
            HttpGet httpGet = new HttpGet(url);

            // 执行http请求
            response = httpClient.execute(httpGet);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        return resultString;
    }

    public static byte[] getFileBytes(String url){
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        byte[] data = null;
        try {
            // 创建Http get请求
            HttpGet httpGet = new HttpGet(url);
            // 执行http请求
            response = httpClient.execute(httpGet);
            InputStream in = response.getEntity().getContent();
            ByteArrayOutputStream bos = new ByteArrayOutputStream(1000);
            byte[] b = new byte[1000];
            int n;
            while ((n = in.read(b)) != -1) {
                bos.write(b, 0, n);
            }
            in.close();
            data = bos.toByteArray();

            bos.close();

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        return data;
    }

    public static JSONObject decryptFile(String url, String sEncodingAESKey){
        byte[] data = getFileBytes(url);
        byte[] key = Base64.decodeBase64(sEncodingAESKey + "=");
        byte[] original = null;
        try {
            // 设置解密模式为AES的CBC模式
            Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
            SecretKeySpec keySpec = new SecretKeySpec(key, "AES");
            IvParameterSpec iv = new IvParameterSpec(Arrays.copyOfRange(key, 0, 16));
            cipher.init(Cipher.DECRYPT_MODE, keySpec, iv);
            original = cipher.doFinal(data);
        } catch (Exception e) {
            e.printStackTrace();
        }
        assert original != null;
        String result = new String(original);
        JSONObject jsonObject = JSONObject.parseObject(result);
        return jsonObject;
    }



}