java map.get类型转换异常 java中map转对象

<dependency>
    <groupId>commons-beanutils</groupId>
    <artifactId>commons-beanutils</artifactId>
    <version>1.9.4</version>
</dependency>

对象和map互转

// 对象转map
Map<String, String> map = BeanUtils.describe(user);
System.out.println(map); // 输出 {"id":"1","name":"yideng"}
// map转对象
User newUser = new User();
BeanUtils.populate(newUser, map);
System.out.println(newUser); // 输出 {"id":1,"name":"yideng"}