package com.highdatas.srs.util;
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import com.baomidou.mybatisplus.annotations.TableName;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.DeserializationFeature;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.highdatas.srs.pojo.Segment;
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import com.highdatas.srs.pojo.TableSchemaResult;
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import lombok.extern.slf4j.Slf4j;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.Random;
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import java.util.UUID;
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/**
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* @author kimi
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* @description
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* @date 2019-12-16 15:13
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*/
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@Slf4j
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public class DbUtils {
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public static String getUUID() {
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String id = UUID.randomUUID().toString().replaceAll("-", "");
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return id;
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}
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public static String getUUID(int i) {
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String id = UUID.randomUUID().toString().replaceAll("-", "").substring(0, i);
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return id;
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}
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public static String combieOneSegment(String name, String value) {
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Segment segment = new Segment(name, value);
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return segment.toString();
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}
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public static String getTableNameFromEntity(Object object) {
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Field[] fields = object.getClass().getDeclaredFields();
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for (Field field : fields) {
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field.setAccessible(true);
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// 获取表名
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TableName table = object.getClass().getAnnotation(TableName.class);
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if (table != null) {
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String tableName = table.value();
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return tableName;
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}
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}
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return null;
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}
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public static Object toSqlToJava(String value, TableSchemaResult tableSchema) throws ClassNotFoundException, NoSuchMethodException, IllegalAccessException, InstantiationException {
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String dbType = tableSchema.getDbType();
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String javaType = toSqlToJava(dbType);
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Class<?> baseWapperClaz = Class.forName("java.lang." + javaType);
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Object baseWapper = baseWapperClaz.newInstance();
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Method valueOfMethod = baseWapperClaz.getDeclaredMethod("valueOf");
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return null;
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// valueOfMethod.invoke(baseWapper, )
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}
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public static String toSqlToJava(String sqlType) {
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if( sqlType == null || sqlType.trim().length() == 0 ) return sqlType;
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sqlType = sqlType.toLowerCase();
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switch(sqlType){
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case "nvarchar":return "String";
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case "char":return "String";
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case "varchar":return "String";
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case "text":return "String";
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case "nchar":return "String";
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case "blob":return "byte[]";
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case "integer":return "Long";
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case "tinyint":return "Integer";
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case "smallint":return "Integer";
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case "mediumint":return "Integer";
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case "bit":return "Boolean";
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case "bigint":return "java.math.BigInteger";
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case "float":return "Fload";
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case "double":return "Double";
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case "decimal":return "java.math.BigDecimal";
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case "boolean":return "Boolean";
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case "id":return "Long";
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case "date":return "java.util.Date";
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case "datetime":return "java.util.Date";
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case "year":return "java.util.Date";
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case "time":return "java.sql.Time";
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case "timestamp":return "java.sql.Timestamp";
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case "numeric":return "java.math.BigDecimal";
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case "real":return "java.math.BigDecimal";
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case "money":return "Double";
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case "smallmoney":return "Double";
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case "image":return "byte[]";
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default:
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log.error("-----------------》转化失败：未发现的类型:{0}",sqlType);
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break;
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}
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return sqlType;
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}
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public static void sqlValueToJava(Object value, String dbType) throws Exception {
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String javaType = toSqlToJava(dbType);
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Class<?> baseWapperClaz = Class.forName("java.lang." + javaType);
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Object baseWapper = baseWapperClaz.newInstance();
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Method valueOfMethod = baseWapperClaz.getDeclaredMethod("valueOf");
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}
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public static String quotedStr(Object o) {
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return quotedStr(String.valueOf(o));
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}
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public static String quotedStr(String str) {
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if (str != null)
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return "'" + str + "'";
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else
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return "''";
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}
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public static String bracketStr(String str) {
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if (str != null)
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return "(" + str + ")";
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else
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return "()";
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}
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public static <T> T json2Bean(String json, Class<T> claz) throws JsonProcessingException {
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ObjectMapper objectMapper = new ObjectMapper();
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objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
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return objectMapper.readValue(json, claz);
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}
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public static String StrJoin(String... objects){
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StringBuilder builder = new StringBuilder();
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for (String object : objects) {
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builder.append(object);
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}
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return builder.toString();
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}
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public static String getRandomString(int length) {
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Random random = new Random();
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StringBuffer sb = new StringBuffer();
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for (int i = 0; i < length; i++) {
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int number = random.nextInt(3);
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long result = 0;
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switch (number) {
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case 0:
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result = Math.round(Math.random() * 25 + 65);
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sb.append(String.valueOf((char) result));
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break;
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case 1:
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result = Math.round(Math.random() * 25 + 97);
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sb.append(String.valueOf((char) result));
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break;
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case 2:
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sb.append(String.valueOf(new Random().nextInt(10)));
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break;
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}
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}
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return sb.toString();
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}
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public static int getOrderNoAdd(int orderNo) {
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return orderNo + 1;
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}
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public static final String getChineseOrEnglishOrNumber(String str) {
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StringBuffer sbf = new StringBuffer();
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char[] charArray = str.toCharArray();
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for (int i = 0; i < charArray.length; i++) {
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if ((charArray[i] >= 0x4e00) && (charArray[i] <= 0x9fbb)) {
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sbf.append(charArray[i]);
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}
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if ((charArray[i] >= 65) && (charArray[i] <= 122)) {
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sbf.append(charArray[i]);
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}
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if (str.charAt(i) >= 48 && str.charAt(i) <= 57) {
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sbf.append(charArray[i]);
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}
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}
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return sbf.toString();
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}
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public static int getDayDiffer(Date startDate, Date endDate) throws ParseException {
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//判断是否跨年
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SimpleDateFormat yearFormat = new SimpleDateFormat("yyyy");
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String startYear = yearFormat.format(startDate);
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String endYear = yearFormat.format(endDate);
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if (startYear.equals(endYear)) {
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/* 使用Calendar跨年的情况会出现问题 */
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(startDate);
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int startDay = calendar.get(Calendar.DAY_OF_YEAR);
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calendar.setTime(endDate);
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int endDay = calendar.get(Calendar.DAY_OF_YEAR);
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return endDay - startDay;
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} else {
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/* 跨年不会出现问题，需要注意不满24小时情况（2016-03-18 11:59:59 和 2016-03-19 00:00:01的话差值为 0） */
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// 只格式化日期，消除不满24小时影响
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SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
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long startDateTime = dateFormat.parse(dateFormat.format(startDate)).getTime();
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long endDateTime = dateFormat.parse(dateFormat.format(endDate)).getTime();
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return (int) ((endDateTime - startDateTime) / (1000 * 3600 * 24));
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}
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}
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public static String convert_before(long time) {
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if (time < 0)
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return String.valueOf(time);
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int difftime = (int) ((System.currentTimeMillis() - time) / 1000);
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if (difftime < 86400 && difftime > 0) {
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if (difftime < 3600) {
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int min = (int) (difftime / 60);
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if (min == 0)
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return "刚刚";
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else
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return (int) (difftime / 60) + "分钟前";
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} else {
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return (int) (difftime / 3600) + "小时前";
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}
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} else {
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Calendar now = Calendar.getInstance();
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Calendar c = Calendar.getInstance();
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c.setTimeInMillis(time);
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if (c.get(Calendar.YEAR) == now.get(Calendar.YEAR) && c.get(Calendar.MONTH) == now.get(Calendar.MONTH)
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&& c.get(Calendar.DATE) == now.get(Calendar.DATE)) {
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return new SimpleDateFormat("HH:mm").format(c.getTime());
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}
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if (c.get(Calendar.YEAR) == now.get(Calendar.YEAR) && c.get(Calendar.MONTH) == now.get(Calendar.MONTH)
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&& c.get(Calendar.DATE) == now.get(Calendar.DATE) - 1) {
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return new SimpleDateFormat("昨天 HH:mm").format(c.getTime());
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} else if (c.get(Calendar.YEAR) == now.get(Calendar.YEAR)
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&& c.get(Calendar.MONTH) == now.get(Calendar.MONTH)
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&& c.get(Calendar.DATE) == now.get(Calendar.DATE) - 2) {
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return new SimpleDateFormat("前天 HH:mm").format(c.getTime());
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} else if (c.get(Calendar.YEAR) == now.get(Calendar.YEAR)) {
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return new SimpleDateFormat("M月dd日 HH:mm").format(c.getTime());
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} else {
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return new SimpleDateFormat("yy年M月dd日").format(c.getTime());
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}
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}
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}
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}
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