Скачать или смотреть spring boot validation

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sure! spring boot provides a powerful and flexible way to handle validation of request data. it integrates the java bean validation api (jsr 380) with the spring framework, which allows you to define validation rules on your data model and automatically enforce those rules when handling requests.

tutorial on spring boot validation

dependencies

to get started, you'll need to include the spring boot starter web and the spring boot starter validation dependencies in your `pom.xml` file if you're using maven:

```xml
dependencies
dependency
groupidorg.springframework.boot/groupid
artifactidspring-boot-starter-web/artifactid
/dependency
dependency
groupidorg.springframework.boot/groupid
artifactidspring-boot-starter-validation/artifactid
/dependency
/dependencies
```

if you're using gradle, include the following in your `build.gradle` file:

```groovy
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-web'
implementation 'org.springframework.boot:spring-boot-starter-validation'
}
```

create a model class

first, define a model class with validation annotations. the annotations come from the `javax.validation.constraints` package.

```java
import javax.validation.constraints.email;
import javax.validation.constraints.notblank;
import javax.validation.constraints.size;

public class user {

@notblank(message = "name is mandatory")
private string name;

@email(message = "email should be valid")
private string email;

@notblank(message = "password is mandatory")
@size(min = 6, message = "password should have at least 6 characters")
private string password;

// getters and setters
public string getname() {
return name;
}

public void setname(string name) {
this.name = name;
}

public string getemail() {
return email;
}

public void setemail(string email) {
this.email = e ...

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JSR 380