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@@ -0,0 +1,284 @@
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+package com.ruoyi.system.utils.downloadpaper;
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+
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+import java.io.BufferedReader;
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+import java.io.ByteArrayOutputStream;
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+import java.io.IOException;
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+import java.io.InputStream;
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+import java.io.InputStreamReader;
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+import java.io.PrintWriter;
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+import java.net.HttpURLConnection;
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+import java.net.URL;
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+import java.net.URLConnection;
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+import java.util.ArrayList;
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+import java.util.List;
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+import java.util.Map;
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+
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+import org.apache.commons.collections4.MapUtils;
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+import org.apache.commons.lang3.StringUtils;
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+import org.apache.http.Consts;
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+import org.apache.http.HttpEntity;
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+import org.apache.http.HttpResponse;
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+import org.apache.http.NameValuePair;
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+import org.apache.http.client.HttpClient;
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+import org.apache.http.client.entity.UrlEncodedFormEntity;
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+import org.apache.http.client.methods.CloseableHttpResponse;
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+import org.apache.http.client.methods.HttpGet;
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+import org.apache.http.client.methods.HttpPost;
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+import org.apache.http.entity.ContentType;
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+import org.apache.http.entity.StringEntity;
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+import org.apache.http.entity.mime.MultipartEntityBuilder;
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+import org.apache.http.entity.mime.content.ByteArrayBody;
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+import org.apache.http.entity.mime.content.StringBody;
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+import org.apache.http.impl.client.CloseableHttpClient;
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+import org.apache.http.impl.client.HttpClientBuilder;
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+import org.apache.http.impl.client.HttpClients;
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+import org.apache.http.message.BasicNameValuePair;
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+import org.apache.http.util.EntityUtils;
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+import org.slf4j.Logger;
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+import org.slf4j.LoggerFactory;
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+
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+public class HttpUtils {
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+ private static Logger logger = LoggerFactory.getLogger(HttpUtils.class);
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+
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+ public static String get(String url) {
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+ try {
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+ HttpClient client = HttpClientBuilder.create().build();
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+ HttpGet request = new HttpGet(url);
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+ HttpResponse response = client.execute(request);
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+ BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), "utf-8"));
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+
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+ StringBuffer result = new StringBuffer();
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+ String line = "";
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+ while ((line = rd.readLine()) != null) {
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+ result.append(line);
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+ }
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+ return result.toString();
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+ } catch (IOException e) {
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+ throw new RuntimeException("网络异常");
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+ }
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+
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+ }
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+
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+ public static String postWithParameters(String url, Map<String, String> paras) {
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+ try {
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+ HttpClient client = HttpClientBuilder.create().build();
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+ HttpPost post = new HttpPost(url);
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+
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+ if (MapUtils.isNotEmpty(paras)) {
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+ List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
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+ for (String key : paras.keySet()) {
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+ urlParameters.add(new BasicNameValuePair(key, paras.get(key)));
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+ }
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+ post.setEntity(new UrlEncodedFormEntity(urlParameters));
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+ }
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+ HttpResponse response = client.execute(post);
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+
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+ BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), "utf-8"));
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+
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+ StringBuilder result = new StringBuilder();
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+ String line = "";
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+ while ((line = rd.readLine()) != null) {
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+ result.append(line);
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+ }
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+ return result.toString();
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+ } catch (IOException e) {
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+ throw new RuntimeException(e.getMessage(), e);
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+ }
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+ }
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+
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+ public static byte[] postWithJsonRequestBody(String url, String requestBody) {
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+ try {
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+ HttpClient client = HttpClientBuilder.create().build();
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+ HttpPost post = new HttpPost(url);
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+
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+ if (StringUtils.isNotBlank(requestBody)) {
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+ post.setEntity(new StringEntity(requestBody, "utf-8"));
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+ }
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+ post.setHeader("Content-type", "application/json");
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+
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+ HttpResponse response = client.execute(post);
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+ InputStream is = response.getEntity().getContent();
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+
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+ ByteArrayOutputStream baos = new ByteArrayOutputStream();
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+ int cache = 1024;
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+ byte[] buffer = new byte[cache];
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+ int ch = 0;
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+ while ((ch = is.read(buffer)) != -1) {
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+ baos.write(buffer, 0, ch);
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+ }
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+ is.close();
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+
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+ return baos.toByteArray();
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+ } catch (IOException e) {
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+ throw new RuntimeException(e.getMessage(), e);
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+ }
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+ }
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+
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+ /**
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+ * 发送post请求
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+ *
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+ * @param url
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+ * @param header
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+ * @param body
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+ * @return
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+ */
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+ public static String doPost(String url, Map<String, String> header, String body) {
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+ String result = "";
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+ BufferedReader in = null;
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+ PrintWriter out = null;
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+ try {
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+ // 设置 url
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+ URL realUrl = new URL(url);
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+ HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection();
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+ // 设置 header
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+ for (String key : header.keySet()) {
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+ connection.setRequestProperty(key, header.get(key));
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+ }
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+ // 设置请求 body
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+ connection.setDoOutput(true);
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+ connection.setDoInput(true);
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+
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+ // 设置连接超时和读取超时时间
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+ connection.setConnectTimeout(20000);
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+ connection.setReadTimeout(20000);
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+ try {
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+ out = new PrintWriter(connection.getOutputStream());
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+ // 保存body
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+ out.print(body);
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+ // 发送body
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+ out.flush();
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+ } catch (Exception e) {
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+ logger.error(e.getMessage(), e);
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+ }
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+
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+ try {
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+ // 获取响应body
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+ in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
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+ String line;
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+ while ((line = in.readLine()) != null) {
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+ result += line;
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+ }
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+ } catch (Exception e) {
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+ logger.error(e.getMessage(), e);
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+ }
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+ } catch (Exception e) {
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+ logger.error(e.getMessage(), e);
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+ // return null;
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+ }
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+ return result;
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+ }
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+
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+ /**
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+ * 发送get请求
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+ *
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+ * @param url
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+ * @param header
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+ * @return
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+ */
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+ public static String doGet(String url, Map<String, String> header) {
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+ String result = "";
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+ BufferedReader in = null;
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+ try {
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+ // 设置 url
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+ URL realUrl = new URL(url);
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+ URLConnection connection = realUrl.openConnection();
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+ // 设置 header
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+ for (String key : header.keySet()) {
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+ connection.setRequestProperty(key, header.get(key));
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+ }
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+ // 设置请求 body
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+ in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
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+ String line;
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+ while ((line = in.readLine()) != null) {
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+ result += line;
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+ }
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+ } catch (Exception e) {
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+ return null;
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+ }
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+ return result;
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+ }
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+
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+ public static List<NameValuePair> convertMapToPair(Map<String, String> params) {
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+ List<NameValuePair> pairs = new ArrayList<NameValuePair>();
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+ for (Map.Entry<String, String> entry : params.entrySet()) {
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+ pairs.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
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+ }
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+ return pairs;
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+ }
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+
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+ public static byte[] post(String url, Map<String, String> param) {
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+ String result = null;
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+ CloseableHttpResponse httpResponse = null;
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+ CloseableHttpClient httpClient = HttpClients.createDefault();
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+ HttpPost httpPost = new HttpPost(url);
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+
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+ try {
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+ httpPost.setEntity(new UrlEncodedFormEntity(convertMapToPair(param), "utf-8"));
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+ httpResponse = httpClient.execute(httpPost);
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+ InputStream is = httpResponse.getEntity().getContent();
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+
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+ ByteArrayOutputStream baos = new ByteArrayOutputStream();
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+ int cache = 1024;
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+ byte[] buffer = new byte[cache];
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+ int ch = 0;
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+ while ((ch = is.read(buffer)) != -1) {
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+ baos.write(buffer, 0, ch);
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+ }
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+ is.close();
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+
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+ return baos.toByteArray();
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+ } catch (Exception e) {
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+ logger.error(e.getMessage(), e);
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+ throw new RuntimeException(e.getMessage(), e);
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+ } finally {
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+ try {
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+ if (httpResponse != null) {
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+ httpResponse.close();
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+ }
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+ } catch (IOException e) {
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+ logger.error(e.getMessage(), e);
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+ }
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+ try {
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+ if (httpClient != null) {
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+ httpClient.close();
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+ }
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+ } catch (IOException e) {
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+ logger.error(e.getMessage(), e);
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+ }
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+ }
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+
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+ }
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+
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+ public static String postMulti(String url, Map<String, String> param, byte[] body) {
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+ String result = null;
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+ CloseableHttpResponse httpResponse = null;
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+ CloseableHttpClient httpClient = HttpClients.createDefault();
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+ HttpPost httpPost = new HttpPost(url);
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+
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+ MultipartEntityBuilder reqEntity = MultipartEntityBuilder.create();
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+ reqEntity.addPart("content", new ByteArrayBody(body, ContentType.DEFAULT_BINARY, param.get("slice_id")));
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+
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+ for (Map.Entry<String, String> entry : param.entrySet()) {
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+ StringBody value = new StringBody(entry.getValue(), ContentType.create("text/plain", Consts.UTF_8));
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+ reqEntity.addPart(entry.getKey(), value);
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+ }
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+ HttpEntity httpEntiy = reqEntity.build();
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+
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+ try {
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+ httpPost.setEntity(httpEntiy);
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+ httpResponse = httpClient.execute(httpPost);
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+ result = EntityUtils.toString(httpResponse.getEntity());
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+ } catch (Exception e) {
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+ logger.error(e.getMessage(), e);
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+ } finally {
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+ try {
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+ if (httpClient != null) {
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+ httpClient.close();
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+ }
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+ } catch (IOException e) {
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+ logger.error(e.getMessage(), e);
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+ }
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+ }
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+ return result;
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+ }
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+}
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