package com.yqzx.common.util;
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// @formatter:off
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import cn.hutool.core.convert.Convert;
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import cn.hutool.core.io.IoUtil;
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import cn.hutool.core.util.RandomUtil;
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import cn.hutool.core.util.StrUtil;
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import cn.hutool.crypto.SecureUtil;
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import cn.jiguang.common.utils.StringUtils;
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import com.alibaba.fastjson.JSON;
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import com.yqzx.common.constants.SystemConstants;
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import org.apache.commons.text.StringEscapeUtils;
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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.IOException;
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import java.lang.reflect.Field;
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import java.nio.charset.Charset;
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import java.text.NumberFormat;
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import java.util.*;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* .-~~~~~~~~~-._ _.-~~~~~~~~~-.
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* __.' @Author ~. .~ 代码无Bug `.__
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* .'// liu.q \./ (秘籍) \\`.
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* .'// [916000612@qq.com] | 欲练神功 引刀自宫 \\`.
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* .'// .-~"""""""~~~~-._ | _,-~~~~"""""""~-. \\`.
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* .'//.-" 2019-04-09 `-. | .-' 10:48 "-.\\`.
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* .'//______.============-.. \ | / ..-============.______\\`.
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*.'______________________________\|/______________________________`.
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*
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* @Description :
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*/
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// @formatter:on
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public class CommonUtil {
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/**
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* @Author : liuq
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* @Date : Create in 2018/7/1 上午1:20
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* @Description : 驼峰转下划线
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*/
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public static String camel2Underline(String line) {
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if (line == null || "".equals(line)) {
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return "";
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}
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line = String.valueOf(line.charAt(0)).toUpperCase().concat(line.substring(1));
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StringBuffer sb = new StringBuffer(512);
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Pattern pattern = Pattern.compile("[A-Z]([a-z\\d]+)?");
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Matcher matcher = pattern.matcher(line);
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while (matcher.find()) {
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String word = matcher.group();
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sb.append(word.toUpperCase());
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sb.append(matcher.end() == line.length() ? "" : "_");
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}
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return sb.toString();
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}
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/*
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* @Author : liu.q [916000612@qq.com]
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*
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* @Date : 2019-04-29 16:45
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*
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* @Description : 下划线转驼峰
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*/
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public static String Underline2camel(String para) {
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StringBuilder result = new StringBuilder();
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String a[] = para.split("_");
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for (String s : a) {
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if (!para.contains("_")) {
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result.append(s);
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continue;
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}
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if (result.length() == 0) {
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result.append(s.toLowerCase());
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} else {
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result.append(s.substring(0, 1).toUpperCase());
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result.append(s.substring(1).toLowerCase());
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}
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}
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return result.toString();
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}
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/**
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* @Author : liu.q
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* @Date : 2019-03-01 09:49
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* @Description : 获取request
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*/
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public static HttpServletRequest getRequest() {
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ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
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if(requestAttributes == null){
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return null;
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}
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HttpServletRequest request = requestAttributes.getRequest();
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return request;
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}
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/**
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* @Author : liu.q
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* @Date : 2019-03-01 09:49
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* @Description : response
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*/
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public static HttpServletResponse getResponse() {
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ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder
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.getRequestAttributes();
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HttpServletResponse response = requestAttributes.getResponse();
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return response;
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}
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/**
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* @Author : liu.q
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* @Date : 2019-03-01 09:51
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* @Description : 获取访问地址
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*/
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public static String getHost() {
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HttpServletRequest request = getRequest();
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String scheme = request.getHeader("X-Forwarded-Scheme");
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if (scheme == null) {
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scheme = request.getScheme();
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}
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String port = request.getHeader("X-Forwarded-port");
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if (port == null) {
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port = request.getServerPort() + "";
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}
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if ("443".equals(port) || "80".equals(port)) {
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return scheme + "://" + request.getServerName();
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}
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return scheme + "://" + request.getServerName() + ":" + port;// +request.getRequestURI();
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}
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/**
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* 获取请求参数
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*
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* @return
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*/
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public static Map getParameterMap() {
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// 参数Map
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Map properties = CommonUtil.getRequest().getParameterMap();
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// 返回值Map
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Map returnMap = new HashMap();
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Iterator entries = properties.entrySet().iterator();
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Map.Entry entry;
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String name = "";
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String value = "";
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while (entries.hasNext()) {
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entry = (Map.Entry) entries.next();
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name = (String) entry.getKey();
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Object valueObj = entry.getValue();
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if (null == valueObj) {
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continue;
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} else if (valueObj instanceof String[]) {
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String[] values = (String[]) valueObj;
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for (int i = 0; i < values.length; i++) {
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value = values[i] + ",";
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}
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value = value.substring(0, value.length() - 1);
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} else {
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value = valueObj.toString();
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}
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if ("".equals(value)) {
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continue;
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}
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returnMap.put(name, value);
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}
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// 判断排序asc和desc
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if (returnMap.containsKey("sortOrder") && returnMap.get("sortOrder") != null && returnMap.get("sortOrder") != "") {
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if (!"DESC".equals(Convert.toStr(returnMap.get("sortOrder")).toUpperCase())
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&& !"ASC".equals(Convert.toStr(returnMap.get("sortOrder")).toUpperCase())) {
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returnMap.put("sortOrder", "");
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}
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}
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return returnMap;
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}
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/*public static String getRequestBodyByReader(){
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HttpServletRequest request = getRequest();
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String tempLine;
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String result = "";
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try {
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if(request != null) {
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while ((tempLine = request.getReader().readLine()) != null) {
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result += tempLine;
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}
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}
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} catch (IOException e) {
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return result;
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} finally {
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try {
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if(request.getReader() != null) {
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request.getReader().close();
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}
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} catch (IOException e) {
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}
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}
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return result;
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}*/
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public static String getExportSign(String url, String timestamp) {
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return Convert
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.toStr(SecureUtil.md5(SecureUtil.md5(url + timestamp) + SystemConstants.EXPORT_SIGN_K).hashCode());
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}
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public static String getIpAddress() {
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HttpServletRequest request = getRequest();
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String Xip = request.getHeader("X-Real-IP");
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String XFor = request.getHeader("X-Forwarded-For");
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if (StrUtil.isNotEmpty(XFor) && !"unKnown".equalsIgnoreCase(XFor)) {
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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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int index = XFor.indexOf(",");
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if (index != -1) {
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return XFor.substring(0, index);
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} else {
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return XFor;
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}
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}
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XFor = Xip;
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if (StringUtils.isNotEmpty(XFor) && !"unKnown".equalsIgnoreCase(XFor)) {
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return XFor;
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}
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if (StrUtil.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
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XFor = request.getHeader("Proxy-Client-IP");
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}
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if (StrUtil.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
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XFor = request.getHeader("WL-Proxy-Client-IP");
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}
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if (StrUtil.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
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XFor = request.getHeader("HTTP_CLIENT_IP");
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}
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if (StrUtil.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
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XFor = request.getHeader("HTTP_X_FORWARDED_FOR");
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}
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if (StrUtil.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
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XFor = request.getRemoteAddr();
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}
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return XFor;
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}
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/**
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* 获取百分比
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*
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* @param numerator
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* @param denominator
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* @return
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*/
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public static String getPercentage(int numerator, int denominator) {
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// 创建一个数值格式化对象
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NumberFormat numberFormat = NumberFormat.getInstance();
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// 设置精确到小数点后2位
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numberFormat.setMaximumFractionDigits(2);
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String result = numberFormat.format((float) numerator / (float) denominator * 100);
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return result + "%";
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}
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/**
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* 获取随机数
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*
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* @param size
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* 随机数取值范围
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* @param num
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* 随机数个数
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* @return
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*/
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public static List<Integer> getRandom(int size, int num) {
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if (num > size) {
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num = size;
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}
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List<Integer> al = new ArrayList<>();
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List<Integer> result = new ArrayList<>();
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for (int i = 0; i < size; i++) {
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al.add(i);
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}
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for (int i = 0; i < num; i++) {
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int m = (int) (RandomUtil.randomDouble() * al.size());
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result.add(al.get(m));
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al.remove(m);
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}
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return result;
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}
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/*public static <T> T getObjFromReq(Class<T> clazz) {
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String s = JSON.toJSONString(getParameterMap());
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return JSON.parseObject(StringEscapeUtils.unescapeHtml4(s), clazz);
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}*/
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public static <T> T getObjFromReq(Class<T> clazz) {
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Map parameterMap = getParameterMap();
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String s = JSON.toJSONString(parameterMap);
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T t = JSON.parseObject(StringEscapeUtils.unescapeHtml4(s), clazz);
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String sortName = String.valueOf(parameterMap.get("sortName"));
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if (StringUtils.isNotEmpty(sortName) && !("null").equals(sortName)) {
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try {
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if (clazz != null) {
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Field declaredField = clazz.getDeclaredField(sortName);
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}
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} catch (NoSuchFieldException e) {
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e.printStackTrace();
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// 传入排序字段 并不在该query类中
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parameterMap.put("sortName", null);
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}
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}
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return t;
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}
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public static <T> T getObjFromReqBody(Class<T> clazz) {
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String body = StringEscapeUtils.unescapeHtml4(getRequestBody(CommonUtil.getRequest()));
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return JSON.parseObject(body, clazz);
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}
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/**
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* 获取request body值
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* @param request
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* @return
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*/
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public static String getRequestBody(HttpServletRequest request) {
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try {
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return IoUtil.read(request.getInputStream(), Charset.forName("UTF-8"));
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} catch (IOException e) {
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}
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return "";
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}
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}
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