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JavaWeb #11

Open lmy8848 opened 2 years ago

lmy8848 commented 2 years ago

http://39.105.77.85/?#/Java_web

Description

lmy8848 commented 2 years ago

JAVA 极速WEB+ORM框架 JFinal

JFinal 是基于 Java 语言的极速 WEB + ORM 框架,其核心设计目标是开发迅速、代码量少、学习简单、功能强大、轻量级、易扩展、Restful。在拥有Java语言所有优势的同时再拥有 ruby、python 等动态语言的开发效率!为您节约更多时间,去陪恋人、家人和朋友 ;)

JFinal有如下主要特点

Maven 坐标

<dependency>
    <groupId>com.jfinal</groupId>
    <artifactId>jfinal</artifactId>
    <version>5.0.3</version>
</dependency>

以下是JFinal实现Blog管理的示例:

1. 控制器(支持 Enjoy、JSP、JSON等等以及自定义视图渲染)

@Before(BlogInterceptor.class)
public class BlogController extends Controller {

    @Inject
    BlogService service;

    public void index() {
        set("blogPage", service.paginate(getInt(0, 1), 10));
        render("blog.html");
    }

    public void add() {
    }

    @Before(BlogValidator.class)
    public void save() {
        getModel(Blog.class).save();
        redirect("/blog");
    }

    public void edit() {
        set("blog", service.findById(getInt()));
    }

    @Before(BlogValidator.class)
    public void update() {
        getModel(Blog.class).update();
        redirect("/blog");
    }

    public void delete() {
        service.deleteById(getInt());
        redirect("/blog");
    }
}

2.Service所有业务与sql全部放在Service层

public class BlogService {

    private Blog dao = new Blog().dao();

    public Page<Blog> paginate(int pageNumber, int pageSize) {
        return dao.paginate(pageNumber, pageSize, "select *", "from blog order by id asc");
    }

    public Blog findById(int id) {
        return dao.findById(id);
    }

    public void deleteById(int id) {
        dao.deleteById(id);
    }
}

3.Model(无xml、无annotaion、无attribute)

public class Blog extends Model<Blog> {

}

4.Validator(API引导式校验,比xml校验方便N倍,有代码检查不易出错)

public class BlogValidator extends Validator {
    protected void validate(Controller controller) {
        validateRequiredString("blog.title", "titleMsg", "请输入Blog标题!");
        validateRequiredString("blog.content", "contentMsg", "请输入Blog内容!");
    }

    protected void handleError(Controller controller) {
        controller.keepModel(Blog.class);
    }
}

5.拦截器(在此demo中仅为示例,本demo不需要此拦截器)

public class BlogInterceptor implements Interceptor {
    public void intercept(Invocation inv) {
        System.out.println("Before invoking " + inv.getActionKey());
        inv.invoke();
        System.out.println("After invoking " + inv.getActionKey());
    }
}

更多支持