Map通过反射转对象

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本文链接： https://blog.csdn.net/liqingwei168/article/details/99854995

说明：本文章需求是Map通过反射转对象，Map为变量，对象也为变量

定义对象

public class TestA {

    private String name;
    private String adrees;

    //get set toString
}

工具类

public static <T> T toClass(Class<T> clazz,Map<String,String> data){
    T obj = null;
    Field[] fields = null;
    try {
        obj = clazz.newInstance();
        fields = clazz.getDeclaredFields();
        for(Field field:fields){
            field.setAccessible(true);
            field.set(obj,data.getOrDefault(field.getName(),""));
        }
    } catch (InstantiationException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }
    return obj;
}

方法测试

public static void main(String[] args) {
    Class clazz = TestA.class;
    Map<String,String> data = new HashMap<>();
    data.put("name","aaa");
    data.put("adrees","adrees");
    System.out.println(toClass(clazz,data));
}

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