140 lines
3.8 KiB
Java
140 lines
3.8 KiB
Java
package com.yunhai.userbase.utils;
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import com.alibaba.fastjson.JSON;
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import com.alibaba.fastjson.JSONArray;
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import com.alibaba.fastjson.JSONException;
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import com.alibaba.fastjson.JSONObject;
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import com.yunhai.platform.utils.exception.DException;
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import java.util.Arrays;
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import java.util.List;
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import java.util.UUID;
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import java.util.stream.Collectors;
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/*
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* 杂项公用方法集合
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* */
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public class OtherUtil {
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/**
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* 十六进制转字符串
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* @param hex
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* @return
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*/
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public final static String hexToString(String hex) {
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < hex.length(); i += 2) {
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String hexSubstring = hex.substring(i, i + 2);
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int decimalValue = Integer.parseInt(hexSubstring, 16);
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sb.append((char) decimalValue);
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}
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return sb.toString();
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}
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/**
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* @Description: 判断字符串能否序列化
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* @Author: chenx
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* @Date: 2023/4/20
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*/
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public final static boolean isJSONValid(String str) {
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try {
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JSONObject.parse(str);
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} catch (JSONException ex) {
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return false;
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}
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return true;
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}
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/**
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* @Description: 判断字符串能否序列化为json数组
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* @Author: chenx
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* @Date: 2023/4/20
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*/
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public final static boolean isJsonArray(String str) {
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if (!isJSONValid(str)) return false;
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try {
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Object object = JSON.parse(str);
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return object instanceof JSONArray;
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} catch (JSONException ex) {
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return false;
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}
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}
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/**
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* @Description: 数组深拷贝
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* @Author: chenx
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* @Date: 2023/4/20
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*/
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public final static <T> List<T> deepCopy(List<T> src, Class<T> clazz) {
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String jsonStr=JSON.toJSONString(src);
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if (!isJsonArray(jsonStr)) return src;
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return JSONArray.parseArray(jsonStr,clazz);
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}
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/**
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* @Description: 逗号分隔字符串转List数组
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* @Author: chenx
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* @Date: 2023/4/20
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*/
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public final static List<Integer> SplitToList(String idsStr) {
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return Arrays.stream(idsStr.split(",")).map(s -> Integer.parseInt(s.trim())).collect(Collectors.toList());
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}
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/**
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* 判断是否为校领导
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*/
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public final static Boolean isAdminById(Integer roleId){
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return Arrays.asList(2,5,7).contains(roleId);
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}
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public static JSONObject getDataOrThrow(String result) {
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JSONObject root = JSON.parseObject(result);
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if (root.getIntValue("code") != 0) {
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throw new DException("接口异常: " + root.getString("msg"));
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}
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return root.getJSONObject("data");
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}
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/**
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* result 里 data 直接就是数组 []，返回 List<JSONObject>
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*/
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public static List<JSONObject> getDataArray(String result) {
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JSONObject root = JSON.parseObject(result);
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if (root.getIntValue("code") != 0) {
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throw new DException("接口异常: " + root.getString("msg"));
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}
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// data 本身就是 JSONArray
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return root.getJSONArray("data").toJavaList(JSONObject.class);
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}
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/**
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* 根据 code 最大值返回学段
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* 1~6 → 2
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* 7~9 → 3
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* 10~12→ 4
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*/
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public static int calcStage(List<Integer> codes) {
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if (codes == null || codes.isEmpty()) {
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throw new IllegalArgumentException("codes 不能为空");
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}
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int max = codes.stream().max(Integer::compareTo).get();
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if (max <= 6) return 2;
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if (max <= 9) return 3;
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return 4;
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}
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public static String getUUID(){
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return UUID.randomUUID().toString().replace("-","");
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}
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public static Integer parseIntNullable(Object val) {
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return val == null ? null : Integer.parseInt(val.toString());
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}
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}
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