Jackson注解实现日期格式转换

jackson在get方法上添加注解，可以自动转换日期格式，用于前端展示。

 

 

private Date ctime;

 

@JsonSerialize(using = JsonDateSerializer.class)

public Date getCtime() {

return ctime;

}

 

 

评论

2 楼 gang.chen 2014-01-24  

yuky1327 写道

hi,我加上了，但是json的日期依然没有格式化过。
package jeecg.kxcomm.util;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.codehaus.jackson.JsonGenerator;
import org.codehaus.jackson.map.JsonSerializer;
import org.codehaus.jackson.map.SerializerProvider;

public class JsonDateSerializer   extends JsonSerializer<Date>{
private static final SimpleDateFormat DATE_FORMAT =  new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    @Override
    public final void serialize(
            final Date date,
            final JsonGenerator gen,
            final SerializerProvider provider)
                    throws IOException {

        String formattedDate = DATE_FORMAT.format(date);

        gen.writeString(formattedDate);
    }
}

我这是这么写的，你试试

import java.io.IOException;
import java.util.Date;

import org.codehaus.jackson.JsonGenerator;
import org.codehaus.jackson.JsonProcessingException;
import org.codehaus.jackson.map.JsonSerializer;
import org.codehaus.jackson.map.SerializerProvider;
import org.springframework.stereotype.Component;

@Component
public class JsonDateSerializer  extends JsonSerializer<Date> {

	@Override
	public void serialize(Date date, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException, JsonProcessingException {
		String dateStr = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(date);
		jsonGenerator.writeString(dateStr);
	}

}

1 楼 yuky1327 2014-01-01  

hi,我加上了，但是json的日期依然没有格式化过。
package jeecg.kxcomm.util;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.codehaus.jackson.JsonGenerator;
import org.codehaus.jackson.map.JsonSerializer;
import org.codehaus.jackson.map.SerializerProvider;

public class JsonDateSerializer   extends JsonSerializer<Date>{
private static final SimpleDateFormat DATE_FORMAT =  new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    @Override
    public final void serialize(
            final Date date,
            final JsonGenerator gen,
            final SerializerProvider provider)
                    throws IOException {

        String formattedDate = DATE_FORMAT.format(date);

        gen.writeString(formattedDate);
    }
}