Hutool中的相关类型转换

一、引入依赖

<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>5.8.11</version>
</dependency>

二、类型转换

1.字符串

int a = 1;
//aStr为"1"
String aStr = Convert.toStr(a);

long[] b = {1,2,3,4,5};
//bStr为："[1, 2, 3, 4, 5]"
String bStr = Convert.toStr(b);

2.数组

String[] b = { "1", "2", "3", "4" };
//结果为Integer数组
Integer[] intArray = Convert.toIntArray(b);

long[] c = {1,2,3,4,5};
//结果为Integer数组
Integer[] intArray2 = Convert.toIntArray(c);

String[] d = { "1", "2", "3", "4" };
//结果为BigDecimal数组
//Number是BigDecimal的父类
Number[] numbers = Convert.toNumberArray(d);

3.日期

String a = "2017-05-06";
// 转换为Date
Date date = Convert.toDate(a);
// 转换为LocalDateTime
LocalDateTime localDateTime = Convert.toLocalDateTime(a);

4.集合

String[] strArray = {"a", "b", "c"};
List<String> list = Convert.toList(String.class, strArray);

5.泛型

Object[] a = { "a", "你", "好", "", 1 };
List<String> list = Convert.convert(new TypeReference<List<String>>() {}, a);