Bootstrap framework components and application scenarios commonly used in the Java class library
Bootstrap framework components and application scenarios commonly used in the Java class library
Introduction: Bootstrap is a popular front -end framework that is widely used in the development of the Java library to build a user interface.It provides rich components that allow developers to quickly build response, scalable and aesthetic user interfaces.This article will introduce some commonly used Bootstrap components and its application scenarios, and provide corresponding Java code examples.
1. grid system (Grid System)
The grid system is one of the core components of Bootstrap. It implements the page layout by dividing the page into multiple equivalent columns.Developers can use the grid system to divide the contents of the page into different rows and columns, thereby achieving the response layout and adaptive screen size.
It is very simple to use Bootstrap's grid system in Java.The following is a sample code fragment that shows how to use the grid system to create a two -column layout in Java:
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/")
public class HomeController {
@GetMapping("/")
public String home(Model model) {
// Add data to the model
Model.ADDATTRIBUTE ("Column1", "Contents column 1");
Model.ADDATTRIBUTE ("colorMn2", "Contents column 2");
// Return to the HTML template using the bootstrap raster system
return "home";
}
}
In the above example, we use Spring Boot as the Java development framework and add data to the model.Then, in the `HOME` method, we returned a HTML template using the Bootstrap grid system, which contains two columns to display data from the model.
2. Navigation Barn (Navbar)
The navigation bar is a commonly used component for navigation different pages or functions in websites or applications.Bootstrap's navigation bar component provides a variety of styles and layout options, enabling developers to flexibly customize according to the design requirements of the project.
The navigation bar assembly of Bootstrap in Java is also very simple.The following example code demonstrates how to create a navigation bar with a logo and navigation link in Java:
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/")
public class HomeController {
@GetMapping("/")
public String home(Model model) {
// Add data to the model
model.addAttribute("logo", "Logo");
Model.addattribute ("Links", New String [] {"Homepage", "About", "Contact"});
// Return to the HTML template using the Bootstrap
return "home";
}
}
In the above example, we still use Spring Boot as the Java development framework.By adding the data to the model, in the `Home` method, we return a HTML template using the Bootstrap navigation bar component, which contains logo and navigation links.
3. Form (FORM)
Forms are one of the main ways for users to enter data.Bootstrap's form component provides various styles and verification options, enabling developers to easily create user -friendly and complete forms.
It is also very simple to use Bootstrap's form component in Java.The following example code shows how to create a simple login form in Java:
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/")
public class HomeController {
@GetMapping("/")
public String home(Model model) {
// Return to the HTML template using the Bootstrap format component
return "login";
}
}
In the above example, we also use Spring Boot as a Java development framework.In the `HOME` method, we return a HTML template using the bootstrap form component, which contains elements such as input fields and buttons to form a login form.
Conclusion: Bootstrap is one of the front -end frameworks commonly used in the Java class library, which provides a wealth of components to build a user interface.This article briefly introduces some commonly used Bootstrap components and its application scenarios in Java, and provides corresponding Java code examples.Developers can flexibly use these components according to specific needs and project requirements to quickly build beautiful and powerful user interfaces.
