107 lines
3.5 KiB
Java
107 lines
3.5 KiB
Java
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package com.cm.common.utils;
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import com.cm.common.exception.base.SystemException;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.web.context.request.RequestContextHolder;
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import org.springframework.web.context.request.ServletRequestAttributes;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.OutputStream;
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/**
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* @ClassName: RequestUtil
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* @Description: 请求工具类
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* @Author: WangGeng
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* @Date: 2019/3/14 11:38 AM
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* @Version: 1.0
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**/
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public class RequestUtil {
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private static final Logger LOG = LoggerFactory.getLogger(RequestUtil.class);
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public static final String UNKNOWN = "unknown";
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public static HttpServletRequest getRequest() {
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return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
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}
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/**
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* 获取IP
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*
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* @return
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*/
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public static String getRequestIp() {
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return getRequestIp(getRequest());
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}
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/**
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* 请求IP
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*
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* @return
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*/
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public static String getRequestIp(HttpServletRequest request) {
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String ip = request.getHeader("x-forwarded-for");
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if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
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ip = request.getHeader("Proxy-Client-IP");
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}
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if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
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ip = request.getHeader("WL-Proxy-Client-IP");
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}
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if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
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ip = request.getHeader("HTTP_CLIENT_IP");
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}
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if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
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ip = request.getHeader("HTTP_X_FORWARDED_FOR");
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}
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if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
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ip = request.getHeader("X-Real-IP");
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}
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if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
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ip = request.getRemoteAddr();
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}
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if (ip.equals("0:0:0:0:0:0:0:1")) {
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ip = "127.0.0.1";
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}
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// 多次反向代理后会有多个ip值，第一个ip才是真实ip
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if(ip.indexOf(",") != -1) {
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ip = ip.split(",")[0];
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}
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return ip;
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}
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/**
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* 下载
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*
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* @param response
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* @param filePath
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* @throws SystemException
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*/
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public static void downLoad(HttpServletResponse response, String filePath) throws SystemException {
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try {
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String[] filePathArray = filePath.split("/");
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String fileName = filePathArray[filePathArray.length - 1];
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response.setHeader("content-type", "application/octet-stream");
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response.setContentType("application/octet-stream");
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response.setHeader("Content-Disposition", "attachment;filename=" + fileName);
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FileInputStream fileInputStream = new FileInputStream(filePath);
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OutputStream outputStream = response.getOutputStream();
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for (byte[] buf = new byte[1024]; fileInputStream.read(buf) > 0; ) {
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outputStream.write(buf);
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}
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outputStream.flush();
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} catch (FileNotFoundException e) {
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LOG.error(e.getMessage(), e);
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throw new SystemException();
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} catch (IOException e) {
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LOG.error(e.getMessage(), e);
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throw new SystemException();
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}
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}
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}
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