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README
Apache-2.0

Smart Framework

简介

1. 它是一款轻量级 Java Web 框架

  • 内置 IOC、AOP、ORM、DAO、MVC 等特性
  • 基于 Servlet 3.0 规范
  • 使用 Java 注解取代 XML 配置

2. 它使应用充分做到“前后端分离”

  • 客户端可使用 HTML 或 JSP 作为视图模板
  • 服务端可发布 REST 服务(使用 REST 插件)
  • 客户端通过 AJAX 获取服务端数据并进行界面渲染

3. 它可提高应用程序的开发效率

  • 面向基于 Web 的中小规模的应用程序
  • 新手能在较短时间内入门
  • 核心具有良好的定制性且插件易于扩展

架构

入门

1. 创建一个 Maven Web 工程

整个工程的目录结构如下:

smart-sample/
  ┗ src/
    ┗ main/
      ┗ java/
      ┗ resources/
      ┗ webapp/
  ┗ pom.xml

java 目录下,创建以下包名目录结构:

org/
  ┗ smart4j/
    ┗ sample/
      ┗ action/
      ┗ entity/
      ┗ service/

可见,基础包名为:org.smart4j.sample,下面的配置中会用到它。

2. 配置 Maven 依赖

编辑 pom.xml 文件,添加 smart-framework 依赖:

<dependency>
    <groupId>org.smart4j</groupId>
    <artifactId>smart-framework</artifactId>
    <version>[版本号]</version>
</dependency>

提示:需要指定具体的版本号。若使用相关 Smart 插件,则需分别配置。

3. 编写 Smart 配置

resources 目录下,创建一个名为 smart.properties 的文件,内容如下:

smart.framework.app.base_package=org.smart4j.sample
smart.framework.app.home_page=/users

smart.framework.jdbc.driver=com.mysql.jdbc.Driver
smart.framework.jdbc.url=jdbc:mysql://localhost:3306/smart-sample
smart.framework.jdbc.username=root
smart.framework.jdbc.password=root

提示:需根据实际情况修改以上配置。

4. 编写 Entity 类

package org.smart4j.sample.entity;

import org.smart4j.framework.orm.annotation.Entity;

@Entity
public class User {

    private long id;

    private String username;

    private String password;

    // getter/setter
}

5. 编写 Service 接口及其实现

Service 接口

package org.smart4j.sample.service;

import java.util.List;
import java.util.Map;
import org.smart4j.sample.entity.User;

public interface UserService {

    List<User> findUserList();

    User findUser(long id);

    boolean saveUser(Map<String, Object> fieldMap);

    boolean updateUser(long id, Map<String, Object> fieldMap);

    boolean deleteUser(long id);
}

Service 实现

package org.smart4j.sample.service.impl;

import java.util.List;
import java.util.Map;
import org.smart4j.framework.orm.DataSet;
import org.smart4j.framework.tx.annotation.Service;
import org.smart4j.framework.tx.annotation.Transaction;
import org.smart4j.sample.entity.User;
import org.smart4j.sample.service.UserService;

@Service
public class UserServiceImpl implements UserService {

    @Override
    public List<User> findUserList() {
        return DataSet.selectList(User.class);
    }

    @Override
    public User findUser(long id) {
        return DataSet.select(User.class, "id = ?", id);
    }

    @Override
    @Transaction
    public boolean saveUser(Map<String, Object> fieldMap) {
        return DataSet.insert(User.class, fieldMap);
    }

    @Override
    @Transaction
    public boolean updateUser(long id, Map<String, Object> fieldMap) {
        return DataSet.update(User.class, fieldMap, "id = ?", id);
    }

    @Override
    @Transaction
    public boolean deleteUser(long id) {
        return DataSet.delete(User.class, "id = ?", id);
    }
}

5. 编写 Action 类

package org.smart4j.sample.action;

import java.util.List;
import java.util.Map;
import org.smart4j.framework.ioc.annotation.Inject;
import org.smart4j.framework.mvc.DataContext;
import org.smart4j.framework.mvc.annotation.Action;
import org.smart4j.framework.mvc.annotation.Request;
import org.smart4j.framework.mvc.bean.Params;
import org.smart4j.framework.mvc.bean.Result;
import org.smart4j.framework.mvc.bean.View;
import org.smart4j.sample.entity.User;
import org.smart4j.sample.service.UserService;

@Action
public class UserAction {

    @Inject
    private UserService userService;

    @Request.Get("/users")
    public View index() {
        List<User> userList = userService.findUserList();
        DataContext.Request.put("userList", userList);
        return new View("user.jsp");
    }

    @Request.Get("/user")
    public View create() {
        return new View("user_create.jsp");
    }

    @Request.Post("/user")
    public Result save(Params params) {
        Map<String, Object> fieldMap = params.getFieldMap();
        boolean result = userService.saveUser(fieldMap);
        return new Result(result);
    }

    @Request.Get("/user/{id}")
    public View edit(long id) {
        User user = userService.findUser(id);
        DataContext.Request.put("user", user);
        return new View("user_edit.jsp");
    }

    @Request.Put("/user/{id}")
    public Result update(long id, Params params) {
        Map<String, Object> fieldMap = params.getFieldMap();
        boolean result = userService.updateUser(id, fieldMap);
        return new Result(result);
    }

    @Request.Delete("/user/{id}")
    public Result delete(long id) {
        boolean result = userService.deleteUser(id);
        return new Result(result);
    }
}

6. 编写视图

在 Action 中使用了 JSP 作为视图展现技术,需要编写以下 JSP 文件:

  • user.jsp
  • user_list.jsp
  • user_create.jsp
  • user_edit.jsp

提示:更多相关细节,请参考 Smart Sample 示例。

提高

TODO

示例

附录

相关插件

注意:插件依赖于框架,不能独立使用。

相关模块

注意:模块不依赖于框架,可以独立使用。

参考资料

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