拆分think模块包

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2024-08-13 17:51:18 +08:00
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package com.gxwebsoft.common.core.utils;
import cn.hutool.core.date.DatePattern;
import cn.hutool.core.date.DateTime;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.RandomUtil;
import com.gxwebsoft.common.core.Constants;
import com.gxwebsoft.common.core.web.ApiResult;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.UUID;
import java.util.function.BiConsumer;
import java.util.function.Consumer;
import java.util.function.Function;
/**
* 常用工具方法
*
* @author WebSoft
* @since 2017-06-10 10:10:22
*/
public class CommonUtil {
// 生成uuid的字符
private static final String[] chars = new String[]{
"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m",
"n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z",
"0", "1", "2", "3", "4", "5", "6", "7", "8", "9",
"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M",
"N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"
};
/**
* 生成8位uuid
*
* @return String
*/
public static String randomUUID8() {
StringBuilder sb = new StringBuilder();
String uuid = UUID.randomUUID().toString().replace("-", "");
for (int i = 0; i < 8; i++) {
String str = uuid.substring(i * 4, i * 4 + 4);
int x = Integer.parseInt(str, 16);
sb.append(chars[x % 0x3E]);
}
return sb.toString();
}
/**
* 生成16位uuid
*
* @return String
*/
public static String randomUUID16() {
StringBuilder sb = new StringBuilder();
String uuid = UUID.randomUUID().toString().replace("-", "");
for (int i = 0; i < 16; i++) {
String str = uuid.substring(i * 2, i * 2 + 2);
int x = Integer.parseInt(str, 16);
sb.append(chars[x % 0x3E]);
}
return sb.toString();
}
/**
* 获取当前时间
*
* @return String
*/
public static String currentTime() {
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyMMddHHmmss");
return sdf.format(date);
}
/**
* 生成10位随机用户名
*
* @return String
*/
public static String randomUsername(String prefix) {
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyMMddHHmmss");
String currentTime = sdf.format(date);
return prefix + currentTime;
}
/**
* 生成订单号
* 20233191166110426
* 20230419135802391412
* @return
*/
public static String createOrderNo() {
String prefix = DateTime.now().toString(DatePattern.PURE_DATETIME_PATTERN);
return prefix + RandomUtil.randomNumbers(2);
}
/**
* 生成订单号
* @param tenantId
* 20233191166110426
* 20230419135802391412
* @return
*/
public static String createOrderNo(String tenantId) {
String prefix = DateTime.now().toString(DatePattern.PURE_DATETIME_PATTERN);
return prefix + tenantId + RandomUtil.randomNumbers(2);
}
/**
* 生成订单水流号
* @param tenantId
* @return
*/
public static String serialNo(int tenantId) {
String prefix = DateTime.now().toString(DatePattern.PURE_DATETIME_PATTERN);
return prefix + tenantId + RandomUtil.randomNumbers(2);
}
/**
* 检查List是否有重复元素
*
* @param list List
* @param mapper 获取需要检查的字段的Function
* @param <T> 数据的类型
* @param <R> 需要检查的字段的类型
* @return boolean
*/
public static <T, R> boolean checkRepeat(List<T> list, Function<? super T, ? extends R> mapper) {
for (int i = 0; i < list.size(); i++) {
for (int j = 0; j < list.size(); j++) {
if (i != j && mapper.apply(list.get(i)).equals(mapper.apply(list.get(j)))) {
return true;
}
}
}
return false;
}
/**
* List转为树形结构
*
* @param data List
* @param parentId 顶级的parentId
* @param parentIdMapper 获取parentId的Function
* @param idMapper 获取id的Function
* @param consumer 赋值children的Consumer
* @param <T> 数据的类型
* @param <R> parentId的类型
* @return List<T>
*/
public static <T, R> List<T> toTreeData(List<T> data, R parentId,
Function<? super T, ? extends R> parentIdMapper,
Function<? super T, ? extends R> idMapper,
BiConsumer<T, List<T>> consumer) {
List<T> result = new ArrayList<>();
for (T d : data) {
R dParentId = parentIdMapper.apply(d);
if (ObjectUtil.equals(parentId, dParentId)) {
R dId = idMapper.apply(d);
List<T> children = toTreeData(data, dId, parentIdMapper, idMapper, consumer);
consumer.accept(d, children);
result.add(d);
}
}
return result;
}
/**
* 遍历树形结构数据
*
* @param data List
* @param consumer 回调
* @param mapper 获取children的Function
* @param <T> 数据的类型
*/
public static <T> void eachTreeData(List<T> data, Consumer<T> consumer, Function<T, List<T>> mapper) {
for (T d : data) {
consumer.accept(d);
List<T> children = mapper.apply(d);
if (children != null && children.size() > 0) {
eachTreeData(children, consumer, mapper);
}
}
}
/**
* 获取集合中的第一条数据
*
* @param records 集合
* @return 第一条数据
*/
public static <T> T listGetOne(List<T> records) {
return records == null || records.size() == 0 ? null : records.get(0);
}
/**
* 支持跨域
*
* @param response HttpServletResponse
*/
public static void addCrossHeaders(HttpServletResponse response) {
response.setHeader("Access-Control-Max-Age", "3600");
response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Methods", "*");
response.setHeader("Access-Control-Allow-Headers", "*");
response.setHeader("Access-Control-Expose-Headers", Constants.TOKEN_HEADER_NAME);
}
/**
* 输出错误信息
*
* @param response HttpServletResponse
* @param code 错误码
* @param message 提示信息
* @param error 错误信息
*/
public static void responseError(HttpServletResponse response, Integer code, String message, String error) {
response.setContentType("application/json;charset=UTF-8");
try {
PrintWriter out = response.getWriter();
out.write(JSONUtil.toJSONString(new ApiResult<>(code, message, null, error)));
out.flush();
} catch (IOException e) {
e.printStackTrace();
}
}
}