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| /**
* 获取ip地址
*/
public static String getIp(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.getRemoteAddr();
}
String comma = ",";
String localhost = "127.0.0.1";
if (ip.contains(comma)) {
ip = ip.split(",")[0];
}
if (localhost.equals(ip)) {
// 获取本机真正的ip地址
try {
ip = InetAddress.getLocalHost().getHostAddress();
} catch (UnknownHostException e) {
e.printStackTrace();
}
}
return ip;
}
/**
* 根据ip获取详细地址
*/
public static String getCityInfo(String ip) {
String api = String.format(IP_URL, ip);
JSONObject object = JSONUtil.parseObj(HttpUtil.get(api));
return object.get("addr", String.class);
}
/**
* 获得当天是周几
*/
public static String getWeekDay() {
String[] weekDays = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
Calendar cal = Calendar.getInstance();
cal.setTime(new Date());
int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
if (w < 0) {
w = 0;
}
return weekDays[w];
}
public static String getBrowser(HttpServletRequest request) {
UserAgent userAgent = UserAgent.parseUserAgentString(request.getHeader("User-Agent"));
Browser browser = userAgent.getBrowser();
return browser.getName();
}
/**
* 导出excel
*/public static void downloadExcel(List<Map<String, Object>> list, HttpServletResponse response) throws IOException {
String tempPath = System.getProperty("java.io.tmpdir") + IdUtil.fastSimpleUUID() + ".xlsx";
File file = new File(tempPath);
BigExcelWriter writer = ExcelUtil.getBigWriter(file);
// 一次性写出内容，使用默认样式，强制输出标题
writer.write(list, true);
//response为HttpServletResponse对象
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8");
//test.xls是弹出下载对话框的文件名，不能为中文，中文请自行编码
response.setHeader("Content-Disposition", "attachment;filename=file.xlsx");
ServletOutputStream out = response.getOutputStream();
// 终止后删除临时文件
file.deleteOnExit();
writer.flush(out, true);
//此处记得关闭输出Servlet流
IoUtil.close(out);
}
/**
* 将文件名解析成文件的上传路径
*/
public static File upload(MultipartFile file, String filePath) {
String suffix = getExtensionName(file.getOriginalFilename());
StringBuffer nowStr = fileRename();
try {
String fileName = nowStr + "." + suffix;
String path = filePath + fileName;
// getCanonicalFile 可解析正确各种路径
File dest = new File(path).getCanonicalFile();
// 检测是否存在目录
if (!dest.getParentFile().exists()) {
dest.getParentFile().mkdirs();
}
// 文件写入
file.transferTo(dest);
return dest;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* MultipartFile转File
*/public static File toFile(MultipartFile multipartFile) {
// 获取文件名
String fileName = multipartFile.getOriginalFilename();
// 获取文件后缀
String prefix = "." + getExtensionName(fileName);
File file = null;
try {
// 用uuid作为文件名，防止生成的临时文件重复
file = File.createTempFile(IdUtil.simpleUUID(), prefix);
// MultipartFile to File
multipartFile.transferTo(file);
} catch (IOException e) {
e.printStackTrace();
}
return file;
}
/**
* 获取文件扩展名，不带 .
*/public static String getExtensionName(String filename) {
if ((filename != null) && (filename.length() > 0)) {
int dot = filename.lastIndexOf('.');
if ((dot > -1) && (dot < (filename.length() - 1))) {
return filename.substring(dot + 1);
}
}
return filename;
}
public static String getFileType(String type) {
String documents = "txt doc pdf ppt pps xlsx xls docx";
String music = "mp3 wav wma mpa ram ra aac aif m4a";
String video = "avi mpg mpe mpeg asf wmv mov qt rm mp4 flv m4v webm ogv ogg";
String image = "bmp dib pcp dif wmf gif jpg tif eps psd cdr iff tga pcd mpt png jpeg";
if (image.contains(type)) {
return "pic";
} else if (documents.contains(type)) {
return "txt";
} else if (music.contains(type)) {
return "music";
} else if (video.contains(type)) {
return "vedio";
} else {
return "other";
}
}
|
