Question

是否可以创建AttributeConverter<Date,String>？我想在使用Hibernate的Spring项目中使用它。我想将String dataColumn转换为Date实体属性。请帮我。它被放置在包装中，而不是通过休眠扫描

@Converter(autoApply=true)
public class DatetoStringConverter implements AttributeConverter
{
    @Override
    public String convertToDatabaseColumn(Date arg0) {
        SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy",Locale.FRENCH);
        return formatter.format(arg0);
    }

    @Override
    public Date convertToEntityAttribute(String arg0) {
        try {
            SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy",Locale.FRENCH);
            return  formatter.parse(arg0);
        } catch (ParseException e) {
            return null;
        }
    }
}

和字段

@Column(name="Date")
@DateTimeFormat(pattern="dd/MM/yyyy")
@Convert(converter=DatetoStringConverter.class)
private Date datefonction;

Answer 1

定义转换器：

        $('#log').text("oka");  //printed fine
        tensionPlotValence.test();

        $('#log').text("okb");  //not printed



        CustomPlotV.prototype.test = function test() {
            $('#log').text("okF"); //not printed

        }

        function CustomPlotV(jElement, data, options) {

            this.plot = $.plot(jElement, data, options);
            this.options = options;
            this.place = jElement;
            this.direction = 1;
            this.crossHairPos = this.plot.getAxes().xaxis.min;
        }

将转换器应用于实体中的所需字段：

@Converter(autoApply = true)
public class MyDateAttributeConverter implements AttributeConverter<Date, String> {

    @Override
    public String convertToDatabaseColumn(Date entityDate) {
        // format entityDate and return String
    }

    @Override
    public Date convertToEntityAttribute(String databaseDate) {
        // parse databaseDate and return Date object
    }
}

确保@AttribureConverter放置在一个包中，而不是hibernate扫描（会话工厂属性）。

AttributeConverter日期字符串

1 个答案: