对象转换成集合

因为在业务开发过程中需要使用到

对象转换为JSON

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-annotations</artifactId>
</dependency>

代码案例

/**
 * 对象转Map工具类
 */
public String BeanToMap(T beau,String url) throws IllegalAccessException {
    Class<?> aClass = beau.getClass();
    Field[] fields = aClass.getDeclaredFields();
    Map<String, Object> JSONMap = new HashMap<>();
    for (Field field : fields) {
        //强制获取
        field.setAccessible(true);
        if (!ObjectUtils.isEmpty(field.get(beau))) {
            JSONMap.put(field.getName(), field.get(beau));
        }
    }
    JSONMap.put("url",url);
    //增强 转换为JSON字符串
    String json = JSON.toJSONString(JSONMap);

    return json;
}   

实体类

@Data
public class Student {
    private String name;
    private Integer age;
    private Double hight;

}

测试类

@Test
public void sss() {
    Student stu = new Student();
    stu.setName("张三");
    stu.setAge(11);
    stu.setHight(56.6);
    String url = "baidu.com";
    try {
        String json = dataValidationUtils.BeanToMap(stu, url);
        System.out.println(json);
    } catch (IllegalAccessException e) {
        log.error(e.getMessage());
    }
}

对象转换map

/**
 * 对象转JSON工具类
 */
public Map<String, Object> BeanToJSON(T beau) throws IllegalAccessException {
    Class<?> aClass = beau.getClass();
    Field[] fields = aClass.getDeclaredFields();
    Map<String, Object> JSONMap = new HashMap<>();
    for (Field field : fields) {
        //强制获取
        field.setAccessible(true);
        if (!ObjectUtils.isEmpty(field.get(beau))) {
            JSONMap.put(field.getName(), field.get(beau));
        }
    }
    return JSONMap;
}