Java TableField.exist方法代码示例

import com.baomidou.mybatisplus.annotations.TableField; //导入方法依赖的package包/类
/**
 * 获取该类的所有属性列表
 *
 * @param clazz 反射类
 * @return
 */
public static List<Field> getAllFields(Class<?> clazz) {
    List<Field> fieldList = ReflectionKit.getFieldList(clazz);
    if (CollectionUtils.isNotEmpty(fieldList)) {
        Iterator<Field> iterator = fieldList.iterator();
        while (iterator.hasNext()) {
            Field field = iterator.next();
            /* 过滤注解非表字段属性 */
            TableField tableField = field.getAnnotation(TableField.class);
            if (tableField != null && !tableField.exist()) {
                iterator.remove();
            }
        }
    }
    return fieldList;
}
 

import com.baomidou.mybatisplus.annotations.TableField; //导入方法依赖的package包/类
public String insert(CommonSaveParam param) {
    StringBuilder sb = new StringBuilder("insert into ");
    sb.append(param.getTableName());
    sb.append(" (");
    Field[] fields = param.gettClass().getDeclaredFields();

    StringBuilder valueBuilder = new StringBuilder();
    for (Field field : fields) {
        TableField tableField = field.getAnnotation(TableField.class);
        if (tableField != null && !tableField.exist()) continue;
        String fieldName = tableField == null ? field.getName() : tableField.value();

        if (fieldName == "id" || fieldName == "createTime" || fieldName == "modifiedTime") continue;
        String fieldValue = getFieldValue(param.getEntityDTO(), field);
        if (fieldValue == "" || fieldValue == "''") continue;

        sb.append("`");
        sb.append(fieldName);
        sb.append("`,");
        valueBuilder.append(fieldValue + ",");
    }
    String createTime = "'" + dateFormat.format(new Date()) + "'";
    sb.append("createTime) values (" + valueBuilder.toString() + createTime + ")");
    return sb.toString();
}
 

import com.baomidou.mybatisplus.annotations.TableField; //导入方法依赖的package包/类
public String update(CommonSaveParam param) {
    Long id = param.getEntityDTO().getId();
    if (id == null || id <= 0) return "";

    StringBuilder sb = new StringBuilder("update ");
    sb.append(param.getTableName());
    sb.append(" set ");

    Field[] fields = param.gettClass().getDeclaredFields();
    for (Field field : fields) {
        TableField tableField = field.getAnnotation(TableField.class);
        if (tableField != null && !tableField.exist()) continue;
        String fieldName = tableField == null ? field.getName() : tableField.value();

        if (fieldName == "id" || fieldName == "createTime" || fieldName == "modifiedTime") continue;
        String fieldValue = getFieldValue(param.getEntityDTO(), field);
        sb.append("`" + fieldName + "` = " + fieldValue);
        sb.append(",");
    }
    String modifiedTime = "'" + dateFormat.format(new Date()) + "'";
    sb.append("modifiedTime = " + modifiedTime);
    sb.append(" where id = " + id);

    return sb.toString();
}
 

import com.baomidou.mybatisplus.annotations.TableField; //导入方法依赖的package包/类
/**
 * 获取该类的所有属性列表
 *
 * @param clazz 反射类
 * @return
 */
public static List<Field> getAllFields(Class<?> clazz) {
    List<Field> fieldList = ReflectionKit.getFieldList(ClassUtils.getUserClass(clazz));
    if (CollectionUtils.isNotEmpty(fieldList)) {
        Iterator<Field> iterator = fieldList.iterator();
        while (iterator.hasNext()) {
            Field field = iterator.next();
            /* 过滤注解非表字段属性 */
            TableField tableField = field.getAnnotation(TableField.class);
            if (tableField != null && !tableField.exist()) {
                iterator.remove();
            }
        }
    }
    return fieldList;
}
 

import com.baomidou.mybatisplus.annotations.TableField; //导入方法依赖的package包/类
/**
 * 根据Class名称初始化select与from
 * 如果select不为空，selectSql = select + tClass反射得到的select
 */
private void initWithClass() {
    if (this.tClass == null) return;


    if (StringUtils.isBlank(this.select)) {
        StringBuilder sb = new StringBuilder();
        List<Field> fields = new ArrayList<>();

        Class tempClass = tClass;
        while (tempClass != null && !tempClass.getName().toLowerCase().equals("java.lang.object")) {
            Field[] tempFields = tempClass.getDeclaredFields();
            fields.addAll(Arrays.asList(tempFields));
            tempClass = tempClass.getSuperclass();
        }

        for (Field field : fields) {
            TableField tableField = field.getAnnotation(TableField.class);
            if (tableField != null && !tableField.exist()) continue;

            String fieldName = field.getName();
            String dbFieldName = tableField == null ? fieldName : tableField.value();
            if (!StringUtils.startsWith(dbFieldName, "`")) {
                sb.append("`");
            }
            sb.append(dbFieldName);
            if (!StringUtils.endsWith(dbFieldName, "`")) {
                sb.append("`");
            }

            if (!fieldName.equals(dbFieldName)) {
                sb.append(" AS ");
                sb.append(fieldName);
            }

            sb.append(",");
        }

        this.select = StringHelper.trimEnd(sb.toString(), ',');
    }

    //如果from为空，则使用tClass的TableName
    if (StringUtils.isBlank(this.from)) {

        TableName tableName = this.tClass.getAnnotation(TableName.class);
        if (tableName != null) {
            this.from = tableName.value();
        }
    }
}