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README
Apache-2.0

Jplus框架使用说明

声明

jplus 是一个java框架,web只是他的一个模块,他并非重复造轮子,初衷是希望把所有好的合适的框架集合到一起,能发挥出对开发者更大的作用。 框架思想主要参考@黄勇 的smart,推荐大家去看看,特别是AOP的部分;

关于Jplus

  1. 支持零配置,所有配置可由.properties或代码管理。
  2. 提供可以媲美Spring的 IOC、AOP、MVC,及各种强大的第三方定制插件。
  3. 快速开发,框架~200Kb,所有插件可插拔。

模块分类:

  • Com.jplus
    • framework -框架
      • Aop -面向切面Aop实现,代理责任链,提供JDK/Cglib代理
      • Bean -容器上下文,bean的生命周期维护
      • Core -框架核心;类加载器、配置管理
      • Db -dataSorce管理,事务管理。[支持多数据源]
      • Ioc -自动依赖注入
      • Junit -单元测试
      • Mvc -webAction管理,路由分发,restful风格
      • Plugin -插件管理
      • Util -附属工具类
      • AppConstant -系统变量区
      • InstanceFactory -单例工厂,用于动态配置核心模块
    • Plugins -插件包,
      • Activemq -activemq 消息队列
      • C3p0 -c3p0 数据库连接池,Spring推荐
      • Druid -druid 数据库连接池,阿里开源库
      • J2cache -二级缓存框架,OSC开源框架
      • Mybatis -可能是最好的数据库orm框架
      • Quartz -定时调度框架,
      • Rpc -Rpc远程过程调用框架,仿dubbo[支持三种通讯形式]
      • .......

注:1. Framework框架包不依赖任何 plugins插件包中内容,插件全部可选装。

初始化流程:

项目启动:CoreLoader -->BeanHandle -->ActionHandle -->PluginHandle -->AopHandle -->IocHandle

关于Bean管理

项目启动后CoreLoader 加载 BeanHandle,同时BeanHandle 初始化ConfigHandle, 获取一系列相应的用户配置信息。 然后扫描 ${app.scan.pkg} 包中所有带@Component注解的class,

Ps:在项目中运行时获取 bean 对象可以使用:BeanHandle.getBean(Class cls);

关于MVC:

Demo : com.demo.web.action.WebAction

关于请求:

@Controller								申明:标示当前类为Action,必须
@Request.All("/test")						[type]action 前缀,非必须

@Request.Get("/blog/list/{page}")			[get]获取博客列表,第{page}页
@Request.Get("/blog/{id}")					[get]获取博客,id为{id}
@Request.Post("/blog") 						[post]新增博客
@Request.Put("/blog")						[put]修改博客	 
@Request.Delete("/blog/{id}")				[Delete]删除博客,id为{id}

关于入参:

  1. 支持下标取参[仅用于resful]
  2. 支持注解@Param取参[支持resful,reqeust]

Demo:

/**
 * 入参测试<br>
 * 入参是无序的。
 * @param req 获取http对象,可以支持4种类型
 * @param xb 默认取值restful下标入参
 * @param xx 按名称取值,可取restful、request入参
 */
@Request.Get("/param/{xx}")
public Result param(HttpServletRequest req, String xb, @Param("xx") String xx) {
	System.err.println("req:" + req.getParameter("xx"));
	System.err.println("下标:" + xb);
	System.err.println("注解:" + xx);
	/**
	 * 结论:xb==xx的,如果request和restful均有同名入参,优先以reqeust为准。
	 * 
	 * restful下标取值说明:
	 * 方法入参支持类型[9种],4种http+5种基本数据类型,除去4种http,
	 * 剩下无@Param注解的基本数据类型入参,按restful中{xx}占位顺序依次取值,注入。
	 * 
	 */
	return new Result(true);
}

注:方法入参注入支持5种基本数据类型: int/Integer、long/Long、double/Double、BigDecimal、String 支持4种http对象类型: HttpServletRequest,HttpServletResponse,ServletContext,HttpSession

关于返回:

Action默认支持以下返回类型:

  1. View 返回视图
  2. Result 返回json对象
  3. 自定义 返回自定义类型的json对象
  4. void 通过WebUtil自定义返回输出

关于AOP:

使用jdk,Cglib动态代理技术实现,采用责任链模式,递归代理。

默认AOP提供三种代理:

1.AspectProxy切面代理,提供6种切点方式:

//开始
public void begin() 
//拦截
public boolean intercept(Class<?> cls, Method method, Object[] params)  
//前
public void before(Class<?> cls, Method method, Object[] params) throws Throwable 
//后
public void after(Class<?> cls, Method method, Object[] params, Object result)  
//异常
public void error(Class<?> cls, Method method, Object[] params, Throwable e) 
//结束
public void end() 

使用方式:

对自定义切面类继承AspectProxy抽象类,并重写目标方法, 然后对该类添加@Aspect注解。

@Aspect注解说明: Pkg:想要被代理类所在的包名。 Cls:想要被代理的具体类,和pkg二选一。 Annotation:想要被代理的类是有指定注解的类。

2.TransactionProxy事务代理: 使用方式:

在想要被事务代理的类、或类的方法上添加注解:@Transaction即可。

3.PluginProxy 插件代理:

这个插件代理就比较灵活了。他是对于上诉两种代理的补充,可以用于扩展任意规则、任意场景代理实现。 该类仅有一个获取代理链方法: public abstract List<Class<?>getTargetClassList() 具体代理被执行时,会执行实现了Proxy接口的doProxy()方法. 使用方式:请参考:com.jplus.plugins.j2cache.proxy.J2CachePluginProxy

关于IOC:

框架中,ioc初始化位于项目启动最后阶段。 之前的MVC,AOP,Plugin 已经是创建了所有项目中所需的bean对象, 在最后要做的就是把这些 对象 互相关联起来,建立原本的依赖关系。

使用方法:

1.private @Autowired ITestServer server1;// 通过接口注入

通过接口注入,框架会找到容器中的第一个接口实现类进行注入,实现类必须>=1,否则异常

2.private @Autowired("Server2") ITestServer server2;// 通过指定接口实现注入

通过指定接口实现注入,实现类上必须标明当前名称@Service("Server2")才能注入成功

3.private @Autowired TestServer2Impl server3;// 通过指定对象注入

这个没什么好说的,直接注入目标类即可

4.private @Value("rpc.registry.address") String registryAddress;// 注入配置文件

5.private @Autowired DruidPlugin druid;// 插件注入

说明.只要是bean容器管理了的对象,都可通过@Autowired 注入。

6.其实还可以自定义注解注入;只要自定义注解实现了@Component注解即可; 比如:

private @RpcConsumer ITestServer server;// RPC客户端代理注入

关于Junit:

使用说明:

基本类添加两个注解:@RunWith@ContextConfiguration 即可: 说一下配置文件配置:
加载配置文件,多个文件以;分割

"file:/db.properties;classpath:app.properties" //过个配置文件,一个文件目录,一个classpath目录 "file:/app.properties" //系统根目录 "app.properties" //项目根目录 "/app.properties" //项目WEB-INF下 "classpath:app.properties" //项目ClassPath下

Demo:

@RunWith(JplusJunit4Runner.class)
@ContextConfiguration(locations = "classpath:app.properties")
public class _Test_RPC {

	private @RpcConsumer(serviceType = ServiceType.Scoket) ITestServer rpcClient1;
	private @RpcConsumer(serviceType = ServiceType.Netty) ITestServer rpcClient2;

	@Test
	public void test() {
		System.out.println(rpcClient1.getMsg());
		System.err.println(rpcClient2.getMsg());
	}

}

关于Plugin:

加载plugins是在IOC前一步,会扫描配置文件中${plugin.allClass} 所配置的插件类列表,以分号 ; 分割。 加载顺序会按照配置顺序类,并且所有的插件类都必须实现:Plugin接口。

目前插件有:c3p0,druid,activemq,mybatis,j2cache,rpc,quartz...

未完待续。。。。

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一个集成IOC,AOP,MVC,插件管理的java框架 展开 收起
Apache-2.0
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