1.准备工作:springmvc相关的jar包.
2.这里我们先用eclipse来操作.
首先看一个接口编程,后面的所有知识点都是通过这个接口编程引出的.
OneInterface.java
1 package gys;2 3 public interface OneInterface {4 String hello(String world);5 }OneInterfaceImpl.java
1 package gys; 2 3 public class OneInterfaceImpl implements OneInterface{ 4 5 @Override 6 public String hello(String world) { 7 return "从接口返回的是:"+world; 8 } 9 10 }Run.java
package gys;public class Run{ public static void main(String[] args) { OneInterface oif=new OneInterfaceImpl(); System.out.println(oif.hello("思思博士")); } }这个地方可以通过接口的形式跑起来了.
下面看看使用springmc方式如何来跑起来这个项目
因为我们不是web项目,没有通过配置web.
只能手写读取配置文件.
getBeanBase.java
1 package gys; 2 3 import org.springframework.context.support.ClassPath 4 //创建springmvc容器,获取配置文件中的bean. 5 public class GetBeanBase { 6 private ClassPath 7 private String spring 8 public GetBeanBase(){}; 9 10 public GetBeanBase(String spring11 this.springspring12 }13 14 public void start(){15 if(springnull||spring16 spring;17 }18 try {19 //创建spring容器20 context=new ClassPath));21 context.start();22 } catch (Exception e) {23 e.printStackTrace();24 }25 }26 27 public void end(){28 context.destroy();29 }30 31 @SuppressWarnings("unchecked")32 protected <T extends Object> T getBen(String beanId){33 return (T) context.getBean(beanId);34 }35 36 protected <T extends Object> T GetBeanBase(Class<T> clazz){37 return context.getBean(clazz);38 }39 }spring-ioc.
1 <??> 2 <beans ="http://www.springframework.org/schema/beans" ="http://www.w3.org/2001/ ="http://www.springframework.org/schema/p" ="http://www.springframework.org/schema/context" 3 ="http://www.springframework.org/schema/mvc" ="http://www.springframework.org/schema/tx" ="http://www.springframework.org/schema/aop" 4 xsi:schemaLocation=" 5 http://www.springframework.org/schema/beans 6 http://www.springframework.org/schema/beans/spring-beans.xsd 7 http://www.springframework.org/schema/context 8 http://www.springframework.org/schema/context/spring-context.xsd 9 http://www.springframework.org/schema/mvc10 http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 11 http://www.springframework.org/schema/tx12 http://www.springframework.org/schema/tx/spring-tx.xsd13 http://www.springframework.org/schema/aop14 http://www.springframework.org/schema/aop/spring-aop.xsd">15 16 <bean id="oneInterface" class="gys.OneInterfaceImpl"></bean>17 </beans>
Run.java
1 package gys; 2 3 public class Run extends GetBeanBase{ 4 public Run(){ 5 super("classpath*:spring-ioc.); 6 start(); 7 } 8 public void testHello(){ 9 OneInterface oneInterface=super.getBen("oneInterface");10 System.out.println(oneInterface.hello("传入的参数"));11 end();12 13 }14 15 public static void main(String[] args) {16 Run run=new Run();17 run.testHello();18 }19 20 }通过这个方式也是可以做到同样的输出.这里的GetBeanBase在后面很多地方使用.
spring注入:在启动Spring容器加载bean配置的时候,完成对变量的赋值行为
常用的两种注入方式:
设置注入
构造注入
1.设置注入:
InjectionDao.java
package gys.dao;public interface InjectionDAO { void save(String info);}InjectionDAOImpl.java
package gys.dao;public class InjectionDAOImpl implements InjectionDAO{ @Override public void save(String info) { System.out.println("保存数据:"+info); }}InjectionService.java
package gys.service;public interface InjectionService { public void save(String info);}InjectionServiceImpl.java
1 package gys.service; 2 3 import gys.dao.InjectionDAO; 4 5 public class InjectionServiceImpl implements InjectionService{ 6 7 private InjectionDAO injectionDAO; 8 9 //设置注入,这里的set方法spring会自动调用,无需手动调用10 public void setInjectionDAO(InjectionDAO injectionDAO) {11 this.injectionDAO = injectionDAO;12 }13 14 15 @Override16 public void save(String info) {17 System.out.println("service接受参数:"+info);18 info=info+":"+this.hashCode();19 injectionDAO.save(info);20 }21 }spring-ioc.
1 <??> 2 <beans ="http://www.springframework.org/schema/beans" ="http://www.w3.org/2001/ ="http://www.springframework.org/schema/p" ="http://www.springframework.org/schema/context" 3 ="http://www.springframework.org/schema/mvc" ="http://www.springframework.org/schema/tx" ="http://www.springframework.org/schema/aop" 4 xsi:schemaLocation=" 5 http://www.springframework.org/schema/beans 6 http://www.springframework.org/schema/beans/spring-beans.xsd 7 http://www.springframework.org/schema/context 8 http://www.springframework.org/schema/context/spring-context.xsd 9 http://www.springframework.org/schema/mvc10 http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 11 http://www.springframework.org/schema/tx12 http://www.springframework.org/schema/tx/spring-tx.xsd13 http://www.springframework.org/schema/aop14 http://www.springframework.org/schema/aop/spring-aop.xsd">15 16 <!-- 设置注入 -->17 <bean id="injectionService" class="gys.service.InjectionServiceImpl">18 <!--InjectionServiceImpl类中必须有一个属性name,类型是ref,springmvc会自动调用这个属性的set方法. -->19 <property name="injectionDAO" ref="injectionDAO"></property>20 </bean>21 22 <bean id="injectionDAO" class="gys.dao.InjectionDAOImpl"></bean>23 24 25 26 </beans>
Run.java
1 package gys; 2 3 import gys.service.InjectionService; 4 public class Run extends GetBeanBase{ 5 public Run(){ 6 super("classpath*:spring-ioc.); 7 start(); 8 } 9 public void testSetter(){10 InjectionService service=super.getBen("injectionService");11 service.save("这是要保存的数据");12 end();13 }14 public static void main(String[] args) {15 Run run=new Run();16 run.testSetter();17 }18 19 }2.构造注入:
对上面的代码做一下改变:
InjectionServiceImpl.java
1 package gys.service; 2 3 import gys.dao.InjectionDAO; 4 5 public class InjectionServiceImpl implements InjectionService{ 6 7 private InjectionDAO injectionDAO; 8 9 //构造器注入10 public InjectionServiceImpl(InjectionDAO injectionDAO){11 this.injectionDAO=injectionDAO;12 }13 14 @Override15 public void save(String info) {16 System.out.println("service接受参数:"+info);17 info=info+":"+this.hashCode();18 injectionDAO.save(info);19 }20 }spring-ioc.
1 <??> 2 <beans ="http://www.springframework.org/schema/beans" ="http://www.w3.org/2001/ ="http://www.springframework.org/schema/p" ="http://www.springframework.org/schema/context" 3 ="http://www.springframework.org/schema/mvc" ="http://www.springframework.org/schema/tx" ="http://www.springframework.org/schema/aop" 4 xsi:schemaLocation=" 5 http://www.springframework.org/schema/beans 6 http://www.springframework.org/schema/beans/spring-beans.xsd 7 http://www.springframework.org/schema/context 8 http://www.springframework.org/schema/context/spring-context.xsd 9 http://www.springframework.org/schema/mvc10 http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 11 http://www.springframework.org/schema/tx12 http://www.springframework.org/schema/tx/spring-tx.xsd13 http://www.springframework.org/schema/aop14 http://www.springframework.org/schema/aop/spring-aop.xsd">15 16 <!-- 构造注入 -->17 <bean id="injectionService" class="gys.service.InjectionServiceImpl">18 <!--在类InjectionServiceImpl中有一个属性name,还必须必须有一个构造器,这个构造器的参数是name值 类型是ref -->19 <constructor-arg name="injectionDAO" ref="injectionDAO" />20 </bean>21 22 <bean id="injectionDAO" class="gys.dao.InjectionDAOImpl"></bean>23 24 25 26 </beans>
Run.java
1 package gys; 2 3 import gys.service.InjectionService; 4 5 public class Run extends GetBeanBase{ 6 public Run(){ 7 super("classpath*:spring-ioc.); 8 start(); 9 }10 11 public void testCons(){12 InjectionService service=super.getBen("injectionService");13 service.save("这是要保存的数据");14 end();15 }16 17 public static void main(String[] args) {18 Run run=new Run(); 19 run.testCons();20 }21 22 }下班了,未完待续......
原标题：springmvc笔记(来自慕课网)
关键词：Spring
我知道了 