java 动态创建表和数据 java实现动态表单

项目需求

不同的任务会有不同的配置，根据所选择的任务，展示不同的表单

思路

后端给页面返回 List <String,List> list, object 是各任务所有的属性集合

代码

// 自定义注解
@Target({ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
public @interface TaskProperty {

    /**
     * 属性描述名
     */
    String label() default "";

    /**
     * 默认值
     */
    String defaultValue() default "";

    /**
     * 是否必填
     */
    boolean required() default false;
    
    /**
     * 输入框文本
     */
    String placeHolder() default "";
}


 //所有可执行的 枚举
@Getter
public enum TaskConfigEnum {

    HNZX(HnUploadConfig.class,"定时"),
    ;
    private Class type;
    private String name;

    TaskConfigEnum(Class type, String name) {
        this.type = type;
        this.name = name;
    }
}

// 对用task 需要的配置
@Data
public class HnUploadConfig {

    @TaskProperty (required = true,label = "ip地址",placeHolder = "127.0.0.1")
    private String host;
    @TaskProperty(required = true,label = "端口")
    private String port;
    @TaskProperty (required = true,label = "表达式")
    private String cron;
    @TaskProperty (required = true,label = "方法名")
    private String method;
    @TaskProperty (required = true,label = "参数")
    private String param;
}

// main method
    public Object getTranslatorList() {
        TaskConfigEnum[] translators = TaskConfigEnum.values();
        List<TaskVo> list = Arrays.stream(translators).map(translator -> {
            TaskVovo = new TaskVo();
            vo.setName(translator.getName());
            Class<?> type = translator.getType();
            Field[] fields = type.getDeclaredFields();
            List<TaskPropertyVo> propertyList = Arrays.stream(fields).filter(field -> field.isAnnotationPresent(TaskProperty.class)).map(field -> {
                TaskPropertyVo property = new TaskPropertyVo();
                property.setName(field.getName());
                TaskProperty translatorProperty = field.getAnnotation(TaskProperty.class);
                if (StringUtils.isNotBlank(translatorProperty.label())) {
                    property.setLabel(translatorProperty.label());
                } else {
                    property.setLabel(field.getName());
                }
                property.setRequired(translatorProperty.required());
                property.setPlaceHolder(translatorProperty.placeHolder());
                
                return property;
            }).collect(Collectors.toList());
            vo.setPropertyList(propertyList);
            return vo;
        }).collect(Collectors.toList());
        return list;
    }

@Data
public class TaskVo {
    //名称
    private String name;
    //属性集合
    private List<TaskPropertyVo> propertyList;
}

@Data
public class TaskPropertyVo {
   //属性名称
    private String name;
   //属性描述
    private String label;
   //是否必填
    private boolean required;
   //placeHolder
    private String placeHolder;
}