map转bean，bean转map

有一个UserInfo类，如下：

public class UserInfo {
    private int id;
    private String userName;
    public int age;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "id=" + id + ",username=" + userName + ",age=" + age;
    }
}

直接使用BeanMap来做转换，如下：

import org.springframework.cglib.beans.BeanMap;

import java.beans.IntrospectionException;
import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import java.util.Map;

public class CommonUtils {
    /**
     * map转bean
     *
     * @param map
     * @param bean
     * @param <T>
     * @return
     */
    public static <T> T map2Bean(Map<String, Object> map, T bean) {
        BeanMap beanMap = BeanMap.create(bean);
        beanMap.putAll(map);
        return bean;
    }

    /**
     * bean转map
     *
     * @param bean
     * @param <T>
     * @return
     */
    public static <T> Map<String, Object> bean2Map(T bean) {
        Map<String, Object> map = new HashMap<String, Object>();
        try {
            if (bean != null) {
                BeanMap beanMap = BeanMap.create(bean);
                map.putAll(beanMap);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return map;
    }

    public static void main(String[] args) throws IllegalAccessException, IntrospectionException, InvocationTargetException {
        Map<String, Object> map = new HashMap<>();
        map.put("id", 1);
        map.put("userName", "jiejie");
        map.put("age", 36);
        UserInfo userInfo = new UserInfo();
        UserInfo o = CommonUtils.map2Bean(map, userInfo);
        System.out.println("map2Bean:" + o);
        System.out.println("bean2Map:" + CommonUtils.bean2Map(o));
    }
}

测试结果：