package ink.wgink.util.request; import org.springframework.web.context.request.RequestContextHolder; import org.springframework.web.context.request.ServletRequestAttributes; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.*; import java.net.URLEncoder; /** * @ClassName: RequestUtil * @Description: 请求工具类 * @Author: WangGeng * @Date: 2019/3/14 11:38 AM * @Version: 1.0 **/ public class RequestUtil { public static final String UNKNOWN = "unknown"; public static HttpServletRequest getRequest() { return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest(); } /** * 获取IP * * @return */ public static String getRequestIp() { return getRequestIp(getRequest()); } /** * 请求IP * * @return */ public static String getRequestIp(HttpServletRequest request) { String ip = request.getHeader("x-forwarded-for"); if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) { ip = request.getHeader("Proxy-Client-IP"); } if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) { ip = request.getHeader("WL-Proxy-Client-IP"); } if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) { ip = request.getHeader("HTTP_CLIENT_IP"); } if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) { ip = request.getHeader("HTTP_X_FORWARDED_FOR"); } if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) { ip = request.getHeader("X-Real-IP"); } if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) { ip = request.getRemoteAddr(); } if (ip.equals("0:0:0:0:0:0:0:1")) { ip = "127.0.0.1"; } // 多次反向代理后会有多个ip值,第一个ip才是真实ip if (ip.indexOf(",") != -1) { ip = ip.split(",")[0]; } return ip; } /** * 下载 * * @param response 响应 * @param outFile 输出的文件 * @param outFileName 输出的名字 */ public static void download(HttpServletResponse response, File outFile, String outFileName) throws IOException { try (FileInputStream fileInputStream = new FileInputStream(outFile); OutputStream outputStream = response.getOutputStream()) { response.setHeader("content-type", "application/octet-stream"); response.setContentType("application/octet-stream"); response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(outFileName, "UTF-8")); byte[] buf = new byte[1024]; for (int readLength; (readLength = fileInputStream.read(buf)) > 0; ) { outputStream.write(buf, 0, readLength); } outputStream.flush(); } } /** * 下载 * * @param response * @param inputStream * @param outFileName * @throws IOException */ public static void download(HttpServletResponse response, InputStream inputStream, String outFileName) throws IOException { try (OutputStream outputStream = response.getOutputStream()) { response.setHeader("content-type", "application/octet-stream"); response.setContentType("application/octet-stream"); response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(outFileName, "UTF-8")); byte[] buf = new byte[1024]; for (int readLength; (readLength = inputStream.read(buf)) > 0; ) { outputStream.write(buf, 0, readLength); } outputStream.flush(); } } }