最近在用spring boot 做数据接口时难免遇到时间这类的问题，接口原则：能服务端处理的别留给客户端。客户端的职责就是把服务端的数据完美的展现出来就好了。所以在返回时间的时候最好先进行一下格式化处理，不要返回时间戳格式。
一、写一个Serializer
然后做一个时间格式化的处理
package info.xiaomo.core.filter;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
public class CustomDateSerializer extends JsonSerializer<Date> {
@Override
public void serialize(Date value, JsonGenerator jsonGenerator, SerializerProvider provider) throws IOException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
jsonGenerator.writeString(sdf.format(value));
}
}
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二、 使用
在需要转换的时间的Model中加上这个类,仔细观察下面代码中类型为Date的属性
package info.xiaomo.core.model.base;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import info.xiaomo.core.filter.CustomDateSerializer;
import javax.persistence.*;
import java.util.Date;
@MappedSuperclass
public abstract class BaseModel {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "Id")
private long id;
@Version
@Column(name = "Version")
private long version;
@JsonSerialize(using = CustomDateSerializer.class)
@Column(name = "CreateTime")
private Date createTime;
@JsonSerialize(using = CustomDateSerializer.class)
@Column(name = "UpdateTime")
private Date updateTime;
public Date getUpdateTime() {
return updateTime;
}
public void setUpdateTime(Date updateTime) {
this.updateTime = updateTime;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public long getVersion() {
return version;
}
public void setVersion(long version) {
this.version = version;
}
public Date getCreateTime() {
return createTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
}
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