java 通过接口下载excel并转实体类工具类

依赖

        <dependency><groupId>com.alibaba</groupId><artifactId>easyexcel</artifactId><version>2.2.6</version></dependency>

工具类

import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.support.ExcelTypeEnum;
import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.ssl.SSLContextBuilder;
import org.springframework.lang.Nullable;import javax.net.ssl.SSLContext;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;/*** @author dume* @ClassName HttpClientDownload* @description: TODO* @date 2023年11月14日* @version: 1.0*/
public class HttpClientDownload {public static <T> List<T> doGetDownload(String url, boolean isHttps, String authorization,Class zclass) {InputStream inputStream  = null;//1.创建HttpClient对象org.apache.http.impl.client.CloseableHttpClient httpClient = null;CloseableHttpResponse response = null;List<T> list = new ArrayList<>();try {//这里我加了一个是否需要创建一个https连接的判断if (isHttps) {//配置https请求的一些参数SSLContext sslContext = SSLContextBuilder.create().useProtocol(SSLConnectionSocketFactory.SSL).loadTrustMaterial((x, y) -> true).build();RequestConfig config = RequestConfig.custom().setConnectTimeout(60000).setSocketTimeout(60000).build();httpClient = HttpClientBuilder.create().setDefaultRequestConfig(config).setSSLContext(sslContext).setSSLHostnameVerifier((x, y) -> true).build();} else {httpClient = HttpClientBuilder.create().build();}//2.生成get请求对象，并设置请求头信息HttpGet httpGet = new HttpGet(url);httpGet.addHeader("Authorization", authorization);httpGet.addHeader("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.81 Safari/537.36");//3.执行请求response = httpClient.execute(httpGet);//4.处理响应信息if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {HttpEntity entity = response.getEntity();inputStream = entity.getContent();list = readExcelConvertObjectList(inputStream,ExcelTypeEnum.XLS,zclass);}} catch (IOException e) {e.printStackTrace();} catch (Exception e) {e.printStackTrace();} finally {try {if (httpClient != null) {httpClient.close();}if (response != null) {response.close();}if (inputStream != null) {inputStream.close();}} catch (IOException e) {e.printStackTrace();}}return list;}/*** 使用Class来读取Excel** @param inputStream   Excel的输入流* @param excelTypeEnum Excel的格式(XLS或XLSX)* @return 返回 ClassList 的列表*/public static <T> List<T> readExcelConvertObjectList(InputStream inputStream, ExcelTypeEnum excelTypeEnum, Class<T> classT) {return readExcelConvertObjectList(inputStream, excelTypeEnum, 0,1, classT);}/*** 读取excel数据到数据对象** @param inputStream 文件流* @param excelTypeEnum 文件类型Excel的格式(XLS或XLSX)* @param headLineNum 开始读取数据的行* @param classT 转为对象的CLASS* @param <T>* @return*/public static <T> List<T> readExcelConvertObjectList(InputStream inputStream, ExcelTypeEnum excelTypeEnum, @Nullable Integer sheet,@Nullable Integer headLineNum, Class<T> classT) {if (headLineNum == null) {headLineNum = 1;}if (sheet == null) {sheet = 0;}return EasyExcel.read(inputStream).excelType(excelTypeEnum).head(classT).sheet(sheet).headRowNumber(headLineNum).doReadSync();}}