• Home
• org.docshare
• yangmvc
• 2022.12.15
• source code
• Loader.java

×

Project download

Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $

You can buy this project and download/modify it how often you want.

org.docshare.mvc.Loader Maven / Gradle / Ivy

package org.docshare.mvc;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.docshare.log.Log;
import org.docshare.mvc.MethodAccessCacher.MyParam;
import org.docshare.mvc.except.MVCException;
import org.docshare.util.TextTool;

import com.esotericsoftware.reflectasm.MethodAccess;

public class Loader {
	/**
	 * 执行后处理程序 ， 如将obj转json
	 * @param uri
	 * @param c
	 * @param ret
	 */
	void runPostProcessing(String uri,Controller c,Object ret) {
		for(Interceptor ic : Config.postInterceptors){
			if(ret == null){
				break; 
			}
			ret = ic.postProcess(uri, c,ret);
		}
	}
	Reloader reloader = null;
	int loaderVersion = 0;
	public  Class load(String p) throws ClassNotFoundException{

		if(reloader == null){
			String reload_base = TextTool.getParentPackage(Config.controller);
			if(reload_base.equals("org") || reload_base.equals("org.docshare")){
				Log.e("reload base can not be 'org' or 'org.docshare', so we use your controller base as reload base.");
				reload_base =Config.controller;
			}
			Log.i("reload base : "+reload_base);

			String groovy_path = Config.getProperty("groovy", null);
			if(groovy_path == null){
				reloader=new Reloader("/", reload_base);
			}else{
				//reloader = new GroovyReloader("/", reload_base);
				try {
					reloader = (Reloader)Class.forName("org.docshare.mvc.GroovyReloader").newInstance();
					reloader.setParam("/", reload_base);
				} catch (Exception e) {
					//e.printStackTrace();
					Log.e(e);
				}
			}
			Log.i("use reloader "+ reloader.getClass().getName());
		}
		
		return reloader.load(p);
		
	}

	/**
	 * 用以存储单例对象的Map。
	 * key: 类名
	 * Object: 对象
	 */
	 Map singleMap = new HashMap();
	
	 static boolean isGroovyObject(Object obj){
		//groovy.lang.GroovyObject
		Class[] ia = obj.getClass().getInterfaces();
		
		for(Class i : ia){
			if(i.getName().equals("groovy.lang.GroovyObject")) return true;
		}
		return false;
	}
	public  boolean call(String uri,String cname,String method,HttpServletRequest req,HttpServletResponse resp){
		Log.d("Call " + cname + ", method = " + method);
		
		//load class
		Class cz=null;
		Object obj =null;
		try{
			if(singleMap.containsKey(cname)){
				obj = singleMap.get(cname);
				cz = obj.getClass();
				((Controller)obj).clearOutFlag();
				Log.d("Single Mode:"+cname);
			}else{
				cz = load(cname);
				
				if(cz == null){
					return false;
				}
				obj = cz.newInstance();
				if(! (obj instanceof Controller)){
					Log.e("error : The Class is not subclass of Controller: "+cname);
					return false;
				}
				((Controller)obj).clearOutFlag();
			}
		}catch(Exception e){
			Throwable cause = e.getCause();
			if(cause == null){
				cause=e;
			}
			if(e instanceof MVCException ) 
				throw (MVCException)e;
			else 
				throw new MVCException(cause);
		}
		
		//call the method
		MethodAccess access;
		Method m;
		try {
			
			Controller ins = (Controller) obj;
			ins.setReq(req, resp);
			//如果方法名为login则不做检验。
			if( ! "login".equals(method) &&  ! ins.checkRequire() ){ //如果未通过检测
				ins.actionRequire(false);
				return true;
			}

			m = MethodAccessCacher.getMethod(cname,method);
			Object ret = "";//返回值
			
			//添加控制器的继承支持。
			if(m == null){ //当前类没找到这个方法，找他的父类，如果他父类是Controller类的子类（不是Controller本身）就尝试查找
				Class parentCz = cz.getSuperclass();
				String parentClass =  parentCz.getName();
				//如果父类不是Controller
				if(! parentClass.equals("org.docshare.mvc.Controller")){
					m = MethodAccessCacher.getMethod(parentClass,method);					
					if(m!=null) {
						cname = parentClass;
						cz = parentCz;
					}
				}				
			}
			
//			if(m == null && isGroovyObject(ins)){ //如果是groovy
//				
//			}
			
			if(m == null){
				ret = "no such method : " + method +" , in class "+cname;
				ins.response.setStatus(500);
				runPostProcessing(uri,ins,ret); //执行后处理程序
				return true;
			}
			access = MethodAccessCacher.getMethodAccess(cname);
			if(!runInterceptors(uri,ins,access,method,m)){
				return true;
			}
			
			
			ret = runMethod(ins,access,m,req,cname);
			runPostProcessing(uri,ins,ret); //执行后处理程序
			
			if(ins.isSingle()){
				singleMap.put(cname, ins);
				CallCacheMap.addCache(uri, cz, access,method, ins,m);
			}else{
				CallCacheMap.addCache(uri, cz, access,method, null,m);
			}
			return true;
		}catch (Exception e) {
			Throwable cause = e.getCause();
			if(cause == null){
				cause=e;
			}
			throw new MVCException(cause);
		}
	}
	

	
	/**
	 * 执行所有拦截器
	 * @param m 
	 * @param method 
	 * @return
	 */
	public  boolean runInterceptors(String uri,Controller controller, MethodAccess access,String methodName, Method m){
		boolean ret = true;
		for(Interceptor ic : Config.interceptors){
			if(ic == null) continue;
			Log.d("Call Intercept "+ic.name());
			ret = ic.intercept(uri, controller,access,methodName,m);
			if(!ret ) return false;
		}
		return true;
	}
	

	/**
	 * 执行方法
	 * @param m
	 * @param req
	 * @throws InvocationTargetException 
	 * @throws IllegalAccessException 
	 * @throws IllegalArgumentException 
	 */
	public  Object  runMethod(Object obj,MethodAccess access,Method method ,HttpServletRequest req,String className){
		
		Object[] args  = null;
		Controller controller = (Controller)obj;
		if(className == null){
			className = obj.getClass().getName();
		}
		MyParam[] mp = MethodAccessCacher.getMethodParam(className, method.getName());
		args=new Object[mp.length];
		for(int i=0;i