import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Map;
/**
* java模拟HTTP請求工具
*
* @author 99013
* @ClassName HttpRequestUtil
* @Description TODO
* 作者：99013
* 建立時間：2020年12月03日 14:07:35
* @Version 2.0
**/
public class HttpRequestUtil {
private static final Logger log = LoggerFactory.getLogger(HttpRequestUtil.class);
/**
* POST請求
*/
private static final String POST = "POST";
/**
* PUT請求
*/
private static final String PUT = "PUT";
/**
* GET請求
*/
private static final String GET = "GET";
/**
* DELETE請求
*/
private static final String DELETE = "DELETE";
/**
* utf-8
*/
public static final String CHARSET_UTF8 = "UTF-8";
/**
* 請求内容類型
*/
public static final String CONTENT_TYPE = "Content-type";
/**
* 請求通用格式
*/
public static final String CONTENT_TYPE_JSON = "application/json";
/**
* multipart/form-data類型
*/
public static final String CONTENT_TYPE_FORMDATA = "multipart/form-data";
/**
* text/plain類型
*/
public static final String CONTENT_TYPE_TEXT_PLAIN = "text/plain";
/**
* image/jpeg類型
*/
public static final String MIME_TYPE_IMAGE_JPEG = "image/jpeg";
/**
* 邊界
*/
private static final String BOUNDARY = "----WebKitFormBoundary07I8UIuBx6LN2KyY";
/**
* Get請求
*
* @param url 請求路徑
* @param params 請求參數
* @param cookie Cookie
* @param headerMap 請求頭補充參數
* @return java.lang.String
* <br><br><b>作者: 990130556 <a class=b href="https://blog.csdn.net/lingdu_dou" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" >lingdu</a></b><br>
* 建立時間: 2021年08月26日 18:46:43
*/
public static String sendGet(String url, Map<String, Object> params, String cookie, Map<String, String> headerMap) {
return send(GET, url, params, cookie, headerMap, null, null);
}
/**
* Delete請求
*
* @param url 請求路徑
* @param params 請求參數
* @param cookie cookie
* @param headerMap 請求頭補充參數
* @return java.lang.String
* <br><br><b>作者: 990130556 <a class=b href="https://blog.csdn.net/lingdu_dou" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" >lingdu</a></b><br>
* 建立時間: 2021年08月26日 18:48:02
*/
public static String sendDelete(String url, Map<String, Object> params, String cookie, Map<String, String> headerMap) {
return send(DELETE, url, params, cookie, headerMap, null, null);
}
/**
* Post請求
*
* @param url 第三方接口位址
* @param params 請求參數
* @return java.lang.String 傳回資訊
* <br><br><b>作者: 990130556 <a class=b href="https://blog.csdn.net/lingdu_dou" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" >lingdu</a></b><br>
* 建立時間: 2020年12月03日 17:45:21
*/
public static String sendPost(String url, Map<String, Object> params, String cookie, Map<String, String> headerMap) {
return sendPostUplodFile(url, params, cookie, headerMap, null, null);
}
/**
* 模拟http請求上傳檔案及相關參數
*
* @param url 第三方上傳檔案位址
* @param fileName 檔案名
* @param params 請求參數
* @param bytes 檔案位元組碼
* @param cookie Cookie
* @return java.lang.String
*/
public static String sendPostUplodFile(String url, Map<String, Object> params, String cookie, Map<String, String> headerMap, String fileName, byte[] bytes) {
return send(POST, url, params, cookie, headerMap, fileName, bytes);
}
/**
* put請求方式
*
* @param url 請求路徑
* @param params 請求參數
* @param cookie cookie
* @return java.lang.String
* 建立時間: 2021年03月07日 09:16:34
*/
public static String sendPut(String url, Map<String, Object> params, String cookie, Map<String, String> headerMap) {
return send(PUT, url, params, cookie, headerMap, null, null);
}
/**
* put請求方式 上傳檔案
*
* @param url 請求路徑
* @param fileName 檔案名
* @param params 請求參數
* @param bytes 檔案位元組碼
* @param cookie cookie
* @return java.lang.String
* 建立時間: 2021年03月07日 09:16:34
*/
public static String sendPutUplodFile(String url, Map<String, Object> params, String cookie, Map<String, String> headerMap, String fileName, byte[] bytes) {
return send(PUT, url, params, cookie, headerMap, fileName, bytes);
}
/**
* 執行請求
*
* @param type 請求類型
* @param url 第三方請求位址
* @param params 請求參數
* @param cookie Cookie
* @param headerMap 補充請求頭參數
* @param fileName 檔案名
* @param bytes 檔案位元組碼
* @return java.lang.String
* <br><br><b>作者: 990130556 <a class=b href="https://blog.csdn.net/lingdu_dou" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" >lingdu</a></b><br>
* 建立時間: 2021年08月26日 18:21:34
*/
private static String send(String type, String url, Map<String, Object> params, String cookie, Map<String, String> headerMap, String fileName, byte[] bytes) {
DataOutputStream out = null;
BufferedReader in = null;
StringBuilder result = new StringBuilder();
try {
// GET 和 DELETE 請求
if (type.equals(GET) || type.equals(DELETE)) {
if (params != null) {
StringBuilder urlBuilder = new StringBuilder(url + "?");
for (String s : params.keySet()) {// 防止中文亂碼 ↓
urlBuilder.append(s).append("=").append(URLEncoder.encode(params.get(s).toString(), "utf-8")).append("&");
}
url = urlBuilder.toString();
}
}
//打開和URL之間的連接配接
HttpURLConnection conn = getHttpUrlConnection(url, type, cookie, headerMap);
// POST 和 PUT 請求
if (type.equals(POST) || type.equals(PUT)) {
out = new DataOutputStream(conn.getOutputStream());
byte[] end_data = ("\r\n--" + BOUNDARY + "--\r\n").getBytes();
//添加參數
if (params != null) {
for (String key : params.keySet()) {
String sb = "--" +
BOUNDARY +
"\r\n" +
"Content-Disposition: form-data;name=\"" + key + "\"" +
"\r\n" +
"\r\n" +
params.get(key) +
// URLEncoder.encode(params.get(key).toString(), "utf-8")+
"\r\n";
out.write(sb.getBytes());
}
}
// 傳檔案
if (null != fileName && null != bytes) {
//添加參數file
String sb = "--" +
BOUNDARY +
"\r\n" +
"Content-Disposition: form-data;name=\"file\";filename=\"" + fileName + "\"" +
"\r\n" +
"Content-Type: " + MIME_TYPE_IMAGE_JPEG +
"\r\n" +
"\r\n";
out.write(sb.getBytes());
// TODO 寫檔案
out.write(bytes);
out.write("\r\n".getBytes());
}
out.write(end_data);
//flush輸出流的緩沖
out.flush();
}
//定義BufferedReader輸入流來讀取URL的響應
in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
result.append(line);
}
} catch (Exception e) {
log.error("發送請求出現異常:", e);
e.printStackTrace();
} finally {
try {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
return result.toString();
}
/**
* 和URL之間建立連接配接
*
* @param url 請求路徑
* @param type 請求類型
* @param cookie cookie
* @param headerMap 請求頭補充參數
* @return java.net.HttpURLConnection 傳回連接配接資訊
* <br><br><b>作者: 990130556 <a class=b href="https://blog.csdn.net/lingdu_dou" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" >lingdu</a></b><br>
* 建立時間: 2021年09月02日 15:51:28
*/
private static HttpURLConnection getHttpUrlConnection(String url, String type, String cookie, Map<String, String> headerMap) throws IOException {
URL realUrl = new URL(url);
//打開和URL之間的連接配接
HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
if (POST.equals(type) || PUT.equals(type)) {
//發送POST請求必須設定如下兩行
conn.setDoOutput(true);
conn.setDoInput(true);
}
conn.setUseCaches(false);
conn.setRequestMethod(type);
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36");
conn.setRequestProperty("Charsert", CHARSET_UTF8);
if (cookie != null) {
conn.setRequestProperty("Cookie", cookie);
}
conn.setRequestProperty(CONTENT_TYPE, CONTENT_TYPE_FORMDATA + "; boundary=" + BOUNDARY);
//填充請求頭
if (headerMap != null && headerMap.keySet().size() != 0) {
for (String s : headerMap.keySet()) {
conn.setRequestProperty(s, headerMap.get(s));
}
}
conn.connect();
return conn;
}
}
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