Simulating Spring frames

Beanfactory

1  Package com.bjsxt.spring; 2 3  Public Interface beanfactory {4      Public Object Getbean (String name); 5 }

Classpathxmlapplicationcontext

1  Packagecom.bjsxt.spring;2 3 ImportJava.lang.reflect.Method;4 ImportJava.util.HashMap;5 Importjava.util.List;6 ImportJava.util.Map;7 8 Importorg.jdom.Document;9 Importorg.jdom.Element;Ten ImportOrg.jdom.input.SAXBuilder; One  A  Public classClasspathxmlapplicationcontextImplementsbeanfactory{ -     Privatemap<string, object> beans =NewHashmap<string, object>(); -      the      PublicClasspathxmlapplicationcontext ()throwsexception{ -Saxbuilder SB =NewSaxbuilder (); -Document doc = Sb.build ( This. GetClass (). getClassLoader (). getResourceAsStream ("Beans.xml")); -Element root = Doc.getrootelement ();//Get root element +List List = Root.getchildren ("Bean");//name all the elements of the bean -          for(inti=0; I<list.size (); i++){ +Element element =(Element) list.get (i); AString id = element.getattributevalue ("id"); atString clazz = Element.getattributevalue ("Class"); -System.out.println (id + ":" +clazz); -Object o =Class.forName (clazz). newinstance (); - beans.put (ID, o); -              -              for(Element propertyelement: (list<element>) Element.getchildren ("property"))){ inString name = Propertyelement.getattributevalue ("name");//Userdao -String bean = propertyelement.getattributevalue ("Bean");//u toObject beanobject = Beans.get (bean);//Userdaoimpl Instance +                  -String methodName = "Set" + name.substring (0, 1). toUpperCase () + name.substring (1); theSystem.out.println ("Method name =" +methodName); *                  $Method m = O.getclass (). GetMethod (MethodName, Beanobject.getclass (). getinterfaces () [0]);Panax Notoginseng M.invoke (o, beanobject);  -             } the         } +     } A  the      PublicObject Getbean (String name) { +         returnbeans.get (name); -     } $      $}

Beans.xml

1 <Beans>2     <BeanID= "U"class= "Com.bjsxt.dao.impl.UserDAOImpl"></Bean>3     <BeanID= "UserService"class= "Com.bjsxt.service.UserService">4         < Propertyname= "Userdao"Bean= "U"></ Property>5     </Bean>6 </Beans>

Userdao

1  Package Com.bjsxt.dao; 2 3 Import Com.bjsxt.model.User; 4 5  Public Interface Userdao {6      Public void Save (User u); 7 }

Userdaoimpl

1  PackageCom.bjsxt.dao.impl;2 3 ImportCom.bjsxt.dao.UserDAO;4 ImportCom.bjsxt.model.User;5 6  Public classUserdaoimplImplementsuserdao{7 8      Public voidSave (User u) {9System.out.println ("A user saved!");Ten     } One  A}

Test class:

1  PackageCom.bjsxt.service;2 3 Importorg.junit.Test;4 5 ImportCom.bjsxt.model.User;6 Importcom.bjsxt.spring.BeanFactory;7 ImportCom.bjsxt.spring.ClassPathXmlApplicationContext;8 9  Public classUserservicetest {Ten  One @Test A      Public voidTestadduser ()throwsException { -Beanfactory factory =NewClasspathxmlapplicationcontext (); -          theUserService service = (userservice) factory.getbean ("UserService"); -User U =NewUser (); - service.adduser (u); -     } +  -}

Code Link: http://pan.baidu.com/s/1eSoYu8i Password: gtj2

Required JAR Packages:

JUnit Link: http://pan.baidu.com/s/1kVFS8lx Password: mkh3

Jdom Link: http://pan.baidu.com/s/1c1X15Xu Password: 9VPI

Simulating Spring frames