390 lines
11 KiB
Markdown
390 lines
11 KiB
Markdown
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测试代码在`sl-express-ms-base-service`的测试用例中，[点击查看](http://git.sl-express.com/sl/sl-express-ms-base-service/src/master/src/test/java/com/sl/transport/common/util)。
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# 1、[树结构工具-TreeUtil](https://hutool.cn/docs/#/core/%E8%AF%AD%E8%A8%80%E7%89%B9%E6%80%A7/%E6%A0%91%E7%BB%93%E6%9E%84/%E6%A0%91%E7%BB%93%E6%9E%84%E5%B7%A5%E5%85%B7-TreeUtil?id=%e6%a0%91%e7%bb%93%e6%9e%84%e5%b7%a5%e5%85%b7-treeutil)
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### 构建Tree示例
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```java
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package com.sl.transport.common.util;
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import cn.hutool.core.bean.BeanUtil;
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import cn.hutool.core.collection.CollUtil;
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import cn.hutool.core.lang.tree.Tree;
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import cn.hutool.core.lang.tree.TreeNode;
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import cn.hutool.core.lang.tree.TreeNodeConfig;
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import cn.hutool.core.lang.tree.TreeUtil;
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import cn.hutool.json.JSONUtil;
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import lombok.extern.slf4j.Slf4j;
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import org.junit.jupiter.api.Test;
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import java.util.List;
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@Slf4j
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class TreeUtilTest {
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@Test
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void treeTest() {
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// 构建node列表
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List<TreeNode<String>> nodeList = CollUtil.newArrayList();
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nodeList.add(new TreeNode<>("1", "0", "系统管理", 5));
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nodeList.add(new TreeNode<>("11", "1", "用户管理", 222222));
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nodeList.add(new TreeNode<>("111", "11", "用户添加", 0));
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nodeList.add(new TreeNode<>("2", "0", "店铺管理", 1));
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nodeList.add(new TreeNode<>("21", "2", "商品管理", 44));
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nodeList.add(new TreeNode<>("221", "2", "添加商品", 2));
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//配置
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TreeNodeConfig treeNodeConfig = new TreeNodeConfig();
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// 自定义属性名 都要默认值的
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treeNodeConfig.setWeightKey("weight");
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treeNodeConfig.setIdKey("id");
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// 最大递归深度
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treeNodeConfig.setDeep(3);
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//构造树结构
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List<Tree<String>> treeNodes = TreeUtil.build(nodeList, "0",
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(treeNode, tree) -> {
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tree.setId(treeNode.getId());
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tree.setParentId(treeNode.getParentId());
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tree.putAll(BeanUtil.beanToMap(treeNode));
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tree.remove("bid");
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});
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log.info("treeNodes {}", JSONUtil.toJsonStr(treeNodes));
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}
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}
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```
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### 输出结果
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```json
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[{
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"id": "2",
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"parentId": "0",
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"name": "店铺管理",
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"weight": 1,
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"children": [{
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"id": "221",
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"parentId": "2",
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"name": "添加商品",
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"weight": 2
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}, {
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"id": "21",
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"parentId": "2",
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"name": "商品管理",
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"weight": 44
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}]
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}, {
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"id": "1",
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"parentId": "0",
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"name": "系统管理",
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"weight": 5,
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"children": [{
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"id": "11",
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"parentId": "1",
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"name": "用户管理",
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"weight": 222222,
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"children": [{
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"id": "111",
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"parentId": "11",
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"name": "用户添加",
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"weight": 0
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}]
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}]
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}]
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```
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# 2、[Bean工具-BeanUtil](https://hutool.cn/docs/#/core/JavaBean/Bean%E5%B7%A5%E5%85%B7-BeanUtil?id=bean%e5%b7%a5%e5%85%b7-beanutil)
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### 对象转Bean
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```java
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@Slf4j
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public class BeanUtilTest {
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@Getter
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@Setter
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public static class SubPerson extends Person {
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public static final String SUBNAME = "TEST";
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private UUID id;
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private String subName;
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private Boolean slow;
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private LocalDateTime date;
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private LocalDate date2;
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}
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@Getter
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@Setter
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public static class Person {
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private String name;
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private int age;
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private String openid;
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}
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/**
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* 对象转Bean
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*/
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@Test
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public void toBeanTest() {
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SubPerson person = new SubPerson();
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person.setAge(14);
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person.setOpenid("11213232");
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person.setName("测试A11");
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person.setSubName("sub名字");
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Map<?, ?> map = BeanUtil.toBean(person, Map.class);
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Assert.assertEquals("测试A11", map.get("name"));
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Assert.assertEquals(14, map.get("age"));
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Assert.assertEquals("11213232", map.get("openid"));
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// static属性应被忽略
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log.info("map是否包含名为SUBNAME的key {}", map.containsKey("SUBNAME"));
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}
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}
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```
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### 输出结果
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```
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map是否包含名为SUBNAME的key false
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```
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# 3、[验证码工具-CaptchaUtil](https://hutool.cn/docs/#/captcha/%E6%A6%82%E8%BF%B0)
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### 生成验证码
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```java
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package com.sl.transport.common.util;
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import cn.hutool.captcha.CaptchaUtil;
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import cn.hutool.captcha.LineCaptcha;
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import lombok.extern.slf4j.Slf4j;
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import org.junit.Assert;
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import org.junit.Test;
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/**
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* 直线干扰验证码单元测试
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*
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* @author looly
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*/
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@Slf4j
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public class CaptchaTest {
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/**
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* 生成验证码
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*/
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@Test
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public void lineCaptchaTest1() {
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// 定义图形验证码的长和宽
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LineCaptcha lineCaptcha = CaptchaUtil.createLineCaptcha(200, 100);
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Assert.assertNotNull(lineCaptcha.getCode());
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log.info("直线干扰验证码: {}", lineCaptcha.getCode());
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log.info("直线干扰验证码验证结果: {}",lineCaptcha.verify(lineCaptcha.getCode()));
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}
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}
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```
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### 输出结果
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```
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直线干扰验证码: 5ku0o
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直线干扰验证码验证结果: true
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```
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# 4、[类型转换工具类-Convert](https://hutool.cn/docs/#/core/%E7%B1%BB%E5%9E%8B%E8%BD%AC%E6%8D%A2/%E7%B1%BB%E5%9E%8B%E8%BD%AC%E6%8D%A2%E5%B7%A5%E5%85%B7%E7%B1%BB-Convert?id=%e7%b1%bb%e5%9e%8b%e8%bd%ac%e6%8d%a2%e5%b7%a5%e5%85%b7%e7%b1%bb-convert)
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### 转换值为指定类型
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```java
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/**
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* 转换值为指定类型
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*/
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@Test
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public void toObjectTest() {
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final Object result = Convert.convert(Object.class, "aaaa");
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log.info(result + "");
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}
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```
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### 输出结果
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```
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aaaa
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```
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# 5、[对象工具-ObjectUtil](https://hutool.cn/docs/#/core/%E5%B7%A5%E5%85%B7%E7%B1%BB/%E5%AF%B9%E8%B1%A1%E5%B7%A5%E5%85%B7-ObjectUtil?id=%e5%af%b9%e8%b1%a1%e5%b7%a5%e5%85%b7-objectutil)
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### 对象相等
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```java
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/**
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* 比较两个对象是否相等
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*/
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@Test
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public void equalsTest() {
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Object a = null;
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Object b = null;
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log.info("是否相等：{}" , ObjectUtil.equals(a, b));
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}
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```
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### 输出结果
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```
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是否相等：true
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```
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# 6、[数字工具-NumberUtil](https://hutool.cn/docs/#/core/%E5%B7%A5%E5%85%B7%E7%B1%BB/%E6%95%B0%E5%AD%97%E5%B7%A5%E5%85%B7-NumberUtil?id=%e6%95%b0%e5%ad%97%e5%b7%a5%e5%85%b7-numberutil)
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### 加法运算
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```java
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/**
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* 提供精确的加法运算
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*/
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@Test
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public void addTest() {
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final Float a = 3.15f;
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final Double b = 4.22;
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final double result = NumberUtil.add(a, b).doubleValue();
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log.info(result + "");
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}
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```
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### 输出结果
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```
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7.37
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```
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# 7、[日期时间工具-DateUtil](https://hutool.cn/docs/#/core/%E6%97%A5%E6%9C%9F%E6%97%B6%E9%97%B4/%E6%97%A5%E6%9C%9F%E6%97%B6%E9%97%B4%E5%B7%A5%E5%85%B7-DateUtil?id=%e6%97%a5%e6%9c%9f%e6%97%b6%e9%97%b4%e5%b7%a5%e5%85%b7-dateutil)
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### 当前时间
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```java
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/**
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* 当前时间
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*/
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@Test
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public void nowTest() {
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// 当前时间
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final Date date = DateUtil.date();
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Assert.assertNotNull(date);
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// 当前时间
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final Date date2 = DateUtil.date(Calendar.getInstance());
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Assert.assertNotNull(date2);
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// 当前时间
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final Date date3 = DateUtil.date(System.currentTimeMillis());
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Assert.assertNotNull(date3);
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// 当前日期字符串，格式：yyyy-MM-dd HH:mm:ss
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final String now = DateUtil.now();
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Assert.assertNotNull(now);
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// 当前日期字符串，格式：yyyy-MM-dd
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final String today = DateUtil.today();
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log.info(today);
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}
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```
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### 输出结果
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```
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2023-03-10
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```
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# 8、[集合工具-CollUtil](https://hutool.cn/docs/#/core/%E9%9B%86%E5%90%88%E7%B1%BB/%E9%9B%86%E5%90%88%E5%B7%A5%E5%85%B7-CollUtil?id=%e9%9b%86%e5%90%88%e5%b7%a5%e5%85%b7-collutil)
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### 自定义函数判断集合是否包含某类值
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```java
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/**
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* 自定义函数判断集合是否包含某类值
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*/
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@Test
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public void testPredicateContains() {
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final ArrayList<String> list = CollUtil.newArrayList("bbbbb", "aaaaa", "ccccc");
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log.info( "" + CollUtil.contains(list, s -> s.startsWith("a")));
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log.info( "" + CollUtil.contains(list, s -> s.startsWith("d")));
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}
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```
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### 输出结果
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```
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true
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false
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```
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# 9、[集合串行流工具-CollStreamUtil](https://hutool.cn/docs/#/core/%E9%9B%86%E5%90%88%E7%B1%BB/%E9%9B%86%E5%90%88%E4%B8%B2%E8%A1%8C%E6%B5%81%E5%B7%A5%E5%85%B7-CollStreamUtil?id=%e9%9b%86%e5%90%88%e4%b8%b2%e8%a1%8c%e6%b5%81%e5%b7%a5%e5%85%b7-collstreamutil)
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### 将Collection转化为map
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```java
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/**
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* 将Collection转化为map(value类型与collection的泛型不同)
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*/
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@Test
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public void testToMap() {
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Map<Long, String> map = CollStreamUtil.toMap(null, Student::getStudentId, Student::getName);
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Assert.assertEquals(map, Collections.EMPTY_MAP);
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List<Student> list = new ArrayList<>();
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map = CollStreamUtil.toMap(list, Student::getStudentId, Student::getName);
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Assert.assertEquals(map, Collections.EMPTY_MAP);
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list.add(new Student(1, 1, 1, "张三"));
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list.add(new Student(1, 1, 2, "李四"));
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list.add(new Student(1, 1, 3, "王五"));
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map = CollStreamUtil.toMap(list, Student::getStudentId, Student::getName);
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Assert.assertEquals(map.get(1L), "张三");
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Assert.assertEquals(map.get(2L), "李四");
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Assert.assertEquals(map.get(3L), "王五");
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Assert.assertNull(map.get(4L));
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// 测试value为空时
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list.add(new Student(1, 1, 4, null));
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map = CollStreamUtil.toMap(list, Student::getStudentId, Student::getName);
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log.info(map.get(4L));
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}
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```
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### 输出结果
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```
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null
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```
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# 10、[JSON工具-JSONUtil](https://hutool.cn/docs/#/json/JSONUtil?id=json%e5%b7%a5%e5%85%b7-jsonutil)
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### JSON字符串转JSONObject对象
|
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|
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```java
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|
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/**
|
|||
|
|
* JSON字符串转JSONObject对象
|
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|
|
*/
|
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|
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@Test
|
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|
|
public void toJsonStrTest2() {
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final Map<String, Object> model = new HashMap<>();
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|
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model.put("mobile", "17610836523");
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|
|
model.put("type", 1);
|
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|
|
|
|||
|
|
final Map<String, Object> data = new HashMap<>();
|
|||
|
|
data.put("model", model);
|
|||
|
|
data.put("model2", model);
|
|||
|
|
|
|||
|
|
final JSONObject jsonObject = JSONUtil.parseObj(data);
|
|||
|
|
|
|||
|
|
log.info("是否相等{}", ObjectUtil.equals( "17610836523", jsonObject.getJSONObject("model").getStr("mobile")));
|
|||
|
|
}
|
|||
|
|
```
|
|||
|
|
### 输出结果
|
|||
|
|
```
|
|||
|
|
是否相等true
|
|||
|
|
```
|
|||
|
|
# 11、[唯一ID工具-IdUtil](https://hutool.cn/docs/#/core/%E5%B7%A5%E5%85%B7%E7%B1%BB/%E5%94%AF%E4%B8%80ID%E5%B7%A5%E5%85%B7-IdUtil?id=%e5%94%af%e4%b8%80id%e5%b7%a5%e5%85%b7-idutil)
|
|||
|
|
### 获取随机UUID
|
|||
|
|
```java
|
|||
|
|
/**
|
|||
|
|
*获取随机UUID
|
|||
|
|
*/
|
|||
|
|
@Test
|
|||
|
|
public void randomUUIDTest() {
|
|||
|
|
String randomUUID = IdUtil.randomUUID();
|
|||
|
|
log.info(randomUUID);
|
|||
|
|
}
|
|||
|
|
```
|
|||
|
|
### 输出结果
|
|||
|
|
```
|
|||
|
|
e514518b-21d7-4918-9b34-792b21b0b64f
|
|||
|
|
```
|
|||
|
|
# 12、[枚举工具-EnumUtil](https://hutool.cn/docs/#/core/%E5%B7%A5%E5%85%B7%E7%B1%BB/%E6%9E%9A%E4%B8%BE%E5%B7%A5%E5%85%B7-EnumUtil?id=%e6%9e%9a%e4%b8%be%e5%b7%a5%e5%85%b7-enumutil)
|
|||
|
|
### 枚举类中所有枚举对象的name列表
|
|||
|
|
```java
|
|||
|
|
public enum TestEnum{
|
|||
|
|
TEST1("type1"), TEST2("type2"), TEST3("type3");
|
|||
|
|
|
|||
|
|
TestEnum(String type) {
|
|||
|
|
this.type = type;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private final String type;
|
|||
|
|
@SuppressWarnings("unused")
|
|||
|
|
private String name;
|
|||
|
|
|
|||
|
|
public String getType() {
|
|||
|
|
return this.type;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public String getName() {
|
|||
|
|
return this.name;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 枚举类中所有枚举对象的name列表
|
|||
|
|
*/
|
|||
|
|
@Test
|
|||
|
|
public void getNamesTest() {
|
|||
|
|
List<String> names = EnumUtil.getNames(TestEnum.class);
|
|||
|
|
boolean equalList = CollUtil.isEqualList(CollUtil.newArrayList("TEST1", "TEST2", "TEST3"), names);
|
|||
|
|
log.info(equalList + "");
|
|||
|
|
}
|
|||
|
|
```
|
|||
|
|
### 输出结果
|
|||
|
|
```
|
|||
|
|
true
|
|||
|
|
```
|