传智javaee教学j2ee第7天课件

JavaEE7天课件一、Spring的概念1Spring2JavajdbcMVC处理框架publicclassUserReg{privateintpublicclassUserReg{privateintuserId;privateStringname;publicUserReg(){}booleancheckObj(UserRegreturntrue;return}publicpublicclassTest普通方法调用UserRegpublicstaticvoidmain(String[]args){UserReguser=newUserReg();booleancheck=user.checkObj(user);intuserId=user.getUserId(); String1new类的构造函数2Classcls=Class.forName(类的字符串说明);Objectobj=cls.newInstance();publicstaticpublicstaticvoidmain(String[]args)throwsExceptionStringClasscls=Class.forName(clsName);// Objectobj=cls.newInstance(); UserReguser=(UserReg)obj;booleancheck=user.checkObj(user);intuserId=user.getUserId(); String}publicstaticvoidmain(String[]args)throwsExceptionStringClasscls=Class.forName(clsName);// Objectobj=cls.newInstance(); //obj.setUseId(参数);StringmhName="setUserId";Methodmh1=cls.getMethod(mhName,int.class);mh1.invoke(obj,param);Methodmh2=cls.getMethod("getUserId",null);ObjectreturnValue=mh2.invoke(obj,null);Methodmh3=cls.getMethod("setName",String.class); mh3.invoke(obj,param2);Methodmh4=cls.getMethod("getName",null);ObjectreturnValue2=mh4.invoke(obj,null);}五、Spring2Spring31SpringpublicclassUserReg{privateintpublicclassUserReg{privateintuserId;privateStringname;publicUserReg(){}<beanid="user"class="qh.spring.UserReg"<beanid="user"class="qh.spring.UserReg"3publicpublicclassTest用Springpublicstaticvoidmain(String[]args){ApplicationContextatx=newUserReguser=(UserReg)atx.getBean("user");booleancheck=user.checkObj(user);intuserId=user.getUserId(); String}}七、Spring1Spiring724IOCDAOJDBCORMAOP八、IOC1IOC，InversionOf反 2javanew构造函数()构建出来spring容器构建出来3IOC模块Spring最重的javajavaBean4IOCBeanFactoryIOC－控制反转的实现方法1Bean.xmlBean.xmlSpringNBean.xml2SpringjavaBean31JavaBean,pojo2<beanid="user"class="qh.spring.UserReg"publicstaticvoidmain(String[]args){ApplicationContextUserReguser=(UserReg)atx.getBean("user");1scope=”prototype”2publicclassTest用Spring原型模式publicstaticvoidmain(String[]args){ApplicationContextatx=newUserReguser1=(UserReg)atx.getBean("user");booleancheck=user1.checkObj(user1);intuserId1=user1.getUserId();UserReguser2=(UserReg //重新newbooleancheck2=user2.checkObj(user2); booleancheck21=user2.checkObj(user1);//falseintuserId2=user2.getUserId();Log.getLog().info("userId2="+userId2);//7788 }}十一、关于java设计模式—13<beanid="user2"class="qh.spring.UserReg"publicclassTest用Spring单例模式{publicstaticvoidmain(String[]args){ApplicationContextatx=newUserReguser1=(UserReg)atx.getBean("user2");booleancheck=user1.checkObj(user1);//trueintuserId1=user1.getUserId();Log.getLog().info("userId1="+userId1);//1237UserReguser2=(UserReg //没有newbooleancheckB=user2==user1;Log.getLog().info("checkB="+checkB);booleancheck2=user2.checkObj(user2); booleancheck21=user2.checkObj(user1);//trueintuserId2=user2.getUserId();Log.getLog().info("userId2="+userId2);//7788 }}十二、Springjava1SpringSpring容器，每个容器都都产生一个单例对象Spring的单例模式，并不是真正意义的单例模式2Java十三、关于DI－依赖注入的概念1DI=DependencyInjection依 注2DIjavaBeansetBean.xml文件送十四、属性的注入,DIpublicclassUserReg{privateintuserId;privatepublicclassUserReg{privateintuserId;privateStringname;publicUserReg(){}2Bean.xml<beanid="user"class="qh.spring.UserReg"<propertyname="userId" <propertyname="namevalue="张红3publicclassTestSpringDIpublicstaticvoidmain(String[]args){ApplicationContextatx=newClassPathXmlApplicationContext("/qh/spring/di/Bean1.xml");//这一行 ApplicationContextatx=newUserReguser1=(UserRegatx.getBean("user");//有3个输出，1个intuserId1=user1.getUserId();Stringname1=user1.getName();UserReguser2=(UserRegatx.getBean("user");//有3个输出，1个intuserId2=user2.getUserId();Stringname2=user2.getName();}}十五、构造函数的注入publicclassUserReg{privateintuserId;privatepublicclassUserReg{privateintuserId;privateStringname;publicUserReg(Stringname,intuserId){}publicUserReg(intuserId,Stringname){}<beanid="user1"class="qh.spring.constructor.injection.UserReg"<beanid="user1"class="qh.spring.constructor.injection.UserReg"scope="prototype"><constructor-argindex="0"value="张海燕<constructor-argindex="1"value="5677"<beanid="user2"class="qh.spring.constructor.injection.UserReg"scope="prototype"><constructor-argindex="0"value="56772"<constructor-argindex="1"value="张海燕23publicpublicclassTestSpringpublicstaticvoidmain(String[]args){ApplicationContextatx=newUserReguser=(UserReg) UserReguser=(UserReg)atx.getBean("user2");}}1Spring2、这个配置可以放在src后面的任 3、采用相对路径方法文件的配ApplicationContextatx=newApplicationContextatx=newApplicationContextatx=new ClassPathXmlApplicationContext("/qh/spring/di/Bean1.xml");//这一行十七、关于类型注入方publicclassStudentpublicclassStudentintstudId; UserReguser;publicStudent(){}publicvoidsetUser(UserReguser){this.user=user;}publicclassUserReg{privateintuserId;privateStringname;publicUserReg(Stringname,intuserId){}publicUserReg(intuserId,Stringname){}<beanid="user"class="qh.spring.reftype.UserReg"<beanid="user"class="qh.spring.reftype.UserReg"<constructor-argindex="0"<constructor-argindex="1" <beanid="stud"class="qh.spring.reftype.Student"<propertyname="studId"<property value="男<propertyname="user"publicclasspublicclassTestSpring类型注入publicstaticvoidmain(String[]args){Applicat