I am working on a spring boot and hibernate project
One of my entity class has a localDate and localTime both for different purposes
public class User{
private LocalTime dailyStartTime;
private LocalDate UniversityStartDate;
//There are other fields here as well
}
My jsp form looks like this
<frm:form modelAttribute="user">
<frm: input type="time" path="dailyStartTime">
<frm: input type="date" path="UniversityStartDate">
</frm:form
Using #InitBinder, I am able parse the date and the date gets updated in the user object.
but I am not able to parse the time getting error as typeMismatch (Failed to convert property value of String to LocalTime)
There just was a similar question here JpaRepository SQL syntax error when trying to save to MySQL Date.
For the form binding you probably need to add #DateTimeFormat(pattern = "yyyy-MM-dd") and #DateTimeFormat(pattern = "HH-mm"). However it's good practice to separate the data object from the actual entities, otherwise you may get problems persisting with the new attributes.
Related
I am creating a spring boot project where I am storing date under my jpa entity class and using the #CreatedDate annotation I am storing ISO type date in postgres.Now I want to filter the date based on date_before and date_after both of them given in query params in the request.
How can I do it in postgres query?
My JPA class:
#Entity
public class Model{
String name;
#CreatedDate
Date date;
}
Now I get my request with both date_before and date_after fields which are both in ISO format.How do I write a query that does the filter operation for me?
I have an entity with a Timestamp field corresponding to a DATE column in the Oracle database.
#Entity
public class Order {
private Tiemstamp purchaseDate;
//more fields...
}
When I insert a row, DATE format in the database is "dd/MM/yyyy hh:mm:ss", but I want it to be just "dd/MM/yyyy".
How can I define the format?
To ignore time in a Date attribute in Java and Hibernate, declare your attribute as java.util.Date and either use the annotation #Type(type="date") along with it or use the #Temporal(TemporalType.DATE) annotation with it.
Here's what you need:
#Column
#Type(type="date")
private Date purchaseDate;
#Column
#Temporal(TemporalType.DATE)
private Date purchaseDate;
Because Timestamp is designed to hold both date and time, whereas Date holds only the date.
Please refer to HIBERNATE DATE VS TIMESTAMP Article for further details.
Despite the Oracle data type is called Date, it always stores datetime.
The Oracle database does not have a data type that is unique to date without the time.
In Java, instead of using the Timestamp use java.sql.Date.
Do not worry about it, the Hibernete makes this treatment a safe and transparent manner.
I am using spring-boot and I have an entity class defined something like this
import org.joda.time.LocalDateTime;
#Entity
public class Project {
#Type(type = "org.jadira.usertype.dateandtime.joda.PersistentLocalDateTime")
private LocalDateTime start_date;
...
...
}
When this class is converted to JSON, the field gets converted to the following string representation
{"start_date":[2014,11,15,0,0,0,0],...., ...}
I want to have the json response as yyyy-MM-dd.
I tried the #DateTimeFormat(iso = ISO.DATE) annotation and that did not help either.
Is there an easy way to do this conversion to proper json format ?
There are three things that you need to do to format the date as yyyy-MM-dd:
Add a dependency on com.fasterxml.jackson.datatype:jackson-datatype-joda. Judging by the output you're getting at the moment, I think you may already have this dependency.
Configure Jackson not to format dates as timestamps by adding spring.jackson.serialization.write-dates-as-timestamps: false to your application.properties file.
Annotate the LocalDataTime field or getter method with #JsonFormat(pattern="yyyy-MM-dd")
Note: You'll need to use Spring Boot 1.2 for step 2 to work.
Without additional dependency - the only thing I had to do is:
To take care send date from client as string object, in format yyyy/MM/dd
In Spring Boot application, to add annotation on the date field with
the same format
public class Foo
{
#JsonFormat(pattern = "yyyy/MM/dd")
private Date dueDate;
}
Using Spring Boot 2.3.5 version
Update
Another option, instead of step 2, to modify application.properties file, add there the format for any Date object:
spring.jackson.date-format=yyyy/MM/dd
You can use #JsonFormat annotation in and the desired pattern like this without using any dependency :
#JsonFormat(pattern="yyyy-MM-dd")
private Date created_At;
Took me some time struggling with Spring Boot Application + Date Format for my input so I'll try to resume what I saw.
If your date is argument to a function, you can use #DateTimeFormat(pattern = "yyyy-MM-dd") to define a pattern (ie. org.springframework.format.annotation.DateTimeFormat).
If your date is inside an object argument to the function, you can use #JsonFormat(pattern = "yyyy-MM-dd") to define a pattern (ie. com.fasterxml.jackson.annotation.JsonFormat)
If neither of these works, you can try changing your date Type, for me I had tu use org.joda.time.LocalDate in order to make it work with option 2 :
#JsonFormat(pattern = "dd/MM/yyyy")
private org.joda.time.LocalDate date;
I just added a jQuery date picker to my simple page made in jsp. Using Spring mvc 4.0.0. I would like to have java.util.Date field in my model class and let spring to convert the date String coming from the front end to date. My issue is that, if i have
#DateTimeFormat(pattern = "dd/MM/yy")
private Date startDate;
In my model class I receive null value in my spring controller. (The startDate setter is not called neither) If i change the startDate to be a simple String, than the value is populated correctly and in the controller i am able to retrieve the startDate string. Could you please advice what am I missing?
Was trying to follow the http://gerrydevstory.com/2013/05/21/binding-date-form-input-on-spring-mvc/ seems that no other tricks has been used to convert the String to Date.
Try this:
#DateTimeFormat(pattern=dd/MM/YY)
private Date startDate;
Maybe it's not working with Date, have you tried using DateTime instead?
I think you shoule put #DateTimeFormat under the #RequestMapping, like below:
#RequestMapping
public String someMethod(#RequestParam(value="date", required=false)#DateTimeFormat(pattern="dd/MM/YY") Date date)
I have a Java EE application and I want to validate a Date.
With a String I do this:
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
...
#NotNull
#Size(min = 1, max = 255)
private String myString;
But now I have two dates which I want to validate. The user can in the frontend system write a String in a text field which will be transferred via JSON (I have to use text field, I can not use a datepicker).
So my backend does have this in my domain class:
#DateTimeFormat(pattern = "dd.MM.yy")
#Temporal(value=TemporalType.TIMESTAMP)
private Date myStartDate;
#DateTimeFormat(pattern = "dd.MM.yy")
#Temporal(value=TemporalType.TIMESTAMP)
private Date myEndDate;
I want to validate against the format "dd.MM.yyyy". How can this be done?
And, I do not think so, but is there an automatic validation to check if the start date is before the end date? I only found #Future and #Past.
So the only solution is to use a #Pattern, a regular expression?!
Thank you in advance for your help, Best Regards.
#DateTimeFormat is used during web data binding, when mapping request parameters onto an object (assuming you have enabled it with <mvc:annotation-driven/> or manually.) It's not generally going to be used when deserializing JSON into an object. How are you reading in your JSON? What are you using to deserialize it? You can't validate a java Date object after the fact for the formatting, you have to check up front before deserialization.
There are no multi-field constraints built in. You'll want to write your own type level constraint if you want to compare two properties on an object.