springMVC系列之(三) spring+springMVC集成(annotation方式)
2016-03-18 16:02
731 查看
个人认为使用框架并不是很难,关键要理解其思想,这对于我们提高编程水平很有帮助。不过,如果用都不会,谈思想就变成纸上谈兵了!!!先技术,再思想。实践出真知。
Spring MVC属于SpringFrameWork的后续产品,已经融合在Spring Web Flow里面。Spring MVC 分离了控制器、模型对象、分派器以及处理程序对象的角色,这种分离让它们更容易进行定制。
2.环境搭建详解
2.1引入相应的包
springMVC和spring包的结构发生了很大的变化,各个包都分开了,灵活,要求使用者更加深入的学习使用,当我们引入包的时候,以少为原则,少的话可以根据报错来找到相应的包,如果过多的话,包会报错异常的混乱,不容易分辨;sprinMVC和spring本身就是一家的,所以引入的包来说基本上和spring需要的架构包是一致的.
![](https://img-blog.csdn.net/20140803095500221?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvbGlzaGVoZQ==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center)
2.2 新建注解xml文件 :springAnnotation-servlet.xml
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<span style="font-size:18px;"><span style="font-size:18px;"><span style="font-size:18px;"><?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<!-- 注解扫描包 -->
<context:component-scan base-package="com.tgb.web.controller.annotation" />
<!-- 开启注解 -->
<mvc:annotation-driven/>
<!-- <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"></bean> -->
<!-- 静态资源访问 -->
<mvc:resources location="/img/" mapping="/img/**"/>
<mvc:resources location="/js/" mapping="/js/**"/>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding" value="utf-8" />
<property name="maxUploadSize" value="10485760000" />
<property name="maxInMemorySize" value="40960" />
</bean>
</beans> </span></span></span>
2.3 建springxml文件 springAnnotation-core.xml
通过bean注入要调用的接口实现类
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<span style="font-size:18px;"><span style="font-size:18px;"><span style="font-size:18px;"><beans>
<bean id="springManager" class="com.tgb.web.controller.annotation.SpringManager"></bean>
</beans></span></span></span>
2.3.1 ISpring接口
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<span style="font-size:18px;"><span style="font-size:18px;"><span style="font-size:18px;">public interface ISpring {
public String get();
}</span></span></span>
2.3.2 ISpring实现类
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<span style="font-size:18px;"><span style="font-size:18px;"><span style="font-size:18px;">public class SpringManager implements ISpring {
@Override
public String get() {
//判定是否调用了
System.out.println("------I am springManager----");
return "I am getMethod";
}
}</span></span></span>
2.3.3 SpringController类
[java] view
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<span style="font-size:18px;"><span style="font-size:18px;"><span style="font-size:18px;">public class SpringController {
//这样代替了再xml中配置属性的过程
@Resource(name="springManager")
private ISpring springManager;//注入springManager
@RequestMapping("/spring/get")
public String get(){
System.out.println(springManager.get());
return "/success";
}
}</span></span></span>
一个项目的全局配置点在web.xml,一个项目需要使用了多少框架,通过xml可以查看.
[html] view
plain copy
print?
![](https://code.csdn.net/assets/CODE_ico.png)
![](https://code.csdn.net/assets/ico_fork.svg)
<span style="font-size:18px;"><span style="font-size:18px;"><span style="font-size:18px;"><?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>springMVC8</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:config/springAnnotation-core.xml</param-value>
<!-- <param-value>classpath*:config/springAnnotation-servlet.xml</param-value> -->
</context-param>
<!-- 配置spring启动listener入口 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 配置springMVC启动DispatcherServlete入口 -->
<servlet>
<servlet-name>springMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!-- <param-value>classpath*:config/springAnnotation-core.xml</param-value> -->
<param-value>classpath*:config/springAnnotation-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<!-- encoding filter for jsp page -->
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet-mapping>
<servlet-name>springMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app></span></span></span>
注解:springMVC是通过dispastservlet来监听的,spring使用linstener监听的,他们之间的启动顺序,web容器有又一个即,
第一:context-param
第二:Listerer
第三:Filter
第四:servlet
这样的启动顺序是有一定联系的
![](https://img-blog.csdn.net/20140803104129022?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvbGlzaGVoZQ==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center)
![](https://img-blog.csdn.net/20140803102901687?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvbGlzaGVoZQ==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center)
总结
一张图胜过千言万语哈!
1、基本概念
1.1、Spring
Spring是一个开源框架,Spring是于2003 年兴起的一个轻量级的Java 开发框架,由Rod Johnson 在其著作Expert One-On-One J2EE Development and Design中阐述的部分理念和原型衍生而来。它是为了解决企业应用开发的复杂性而创建的。Spring使用基本的JavaBean来完成以前只可能由EJB完成的事情。然而,Spring的用途不仅限于服务器端的开发。从简单性、可测试性和松耦合的角度而言,任何Java应用都可以从Spring中受益。 简单来说,Spring是一个轻量级的控制反转(IoC)和面向切面(AOP)的容器框架。1.2、SpringMVC
Spring MVC属于SpringFrameWork的后续产品,已经融合在Spring Web Flow里面。Spring MVC 分离了控制器、模型对象、分派器以及处理程序对象的角色,这种分离让它们更容易进行定制。
2.环境搭建详解
2.1引入相应的包
springMVC和spring包的结构发生了很大的变化,各个包都分开了,灵活,要求使用者更加深入的学习使用,当我们引入包的时候,以少为原则,少的话可以根据报错来找到相应的包,如果过多的话,包会报错异常的混乱,不容易分辨;sprinMVC和spring本身就是一家的,所以引入的包来说基本上和spring需要的架构包是一致的.
2.2 新建注解xml文件 :springAnnotation-servlet.xml
[html] view
plain copy
print?
![](https://code.csdn.net/assets/CODE_ico.png)
<span style="font-size:18px;"><span style="font-size:18px;"><span style="font-size:18px;"><?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<!-- 注解扫描包 -->
<context:component-scan base-package="com.tgb.web.controller.annotation" />
<!-- 开启注解 -->
<mvc:annotation-driven/>
<!-- <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"></bean> -->
<!-- 静态资源访问 -->
<mvc:resources location="/img/" mapping="/img/**"/>
<mvc:resources location="/js/" mapping="/js/**"/>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding" value="utf-8" />
<property name="maxUploadSize" value="10485760000" />
<property name="maxInMemorySize" value="40960" />
</bean>
</beans> </span></span></span>
2.3 建springxml文件 springAnnotation-core.xml
通过bean注入要调用的接口实现类
[html] view
plain copy
print?
![](https://code.csdn.net/assets/CODE_ico.png)
<span style="font-size:18px;"><span style="font-size:18px;"><span style="font-size:18px;"><beans>
<bean id="springManager" class="com.tgb.web.controller.annotation.SpringManager"></bean>
</beans></span></span></span>
2.3.1 ISpring接口
[java] view
plain copy
print?
![](https://code.csdn.net/assets/CODE_ico.png)
<span style="font-size:18px;"><span style="font-size:18px;"><span style="font-size:18px;">public interface ISpring {
public String get();
}</span></span></span>
2.3.2 ISpring实现类
[java] view
plain copy
print?
![](https://code.csdn.net/assets/CODE_ico.png)
<span style="font-size:18px;"><span style="font-size:18px;"><span style="font-size:18px;">public class SpringManager implements ISpring {
@Override
public String get() {
//判定是否调用了
System.out.println("------I am springManager----");
return "I am getMethod";
}
}</span></span></span>
2.3.3 SpringController类
[java] view
plain copy
print?
![](https://code.csdn.net/assets/CODE_ico.png)
<span style="font-size:18px;"><span style="font-size:18px;"><span style="font-size:18px;">public class SpringController {
//这样代替了再xml中配置属性的过程
@Resource(name="springManager")
private ISpring springManager;//注入springManager
@RequestMapping("/spring/get")
public String get(){
System.out.println(springManager.get());
return "/success";
}
}</span></span></span>
一个项目的全局配置点在web.xml,一个项目需要使用了多少框架,通过xml可以查看.
[html] view
plain copy
print?
![](https://code.csdn.net/assets/CODE_ico.png)
<span style="font-size:18px;"><span style="font-size:18px;"><span style="font-size:18px;"><?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>springMVC8</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:config/springAnnotation-core.xml</param-value>
<!-- <param-value>classpath*:config/springAnnotation-servlet.xml</param-value> -->
</context-param>
<!-- 配置spring启动listener入口 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 配置springMVC启动DispatcherServlete入口 -->
<servlet>
<servlet-name>springMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!-- <param-value>classpath*:config/springAnnotation-core.xml</param-value> -->
<param-value>classpath*:config/springAnnotation-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<!-- encoding filter for jsp page -->
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet-mapping>
<servlet-name>springMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app></span></span></span>
注解:springMVC是通过dispastservlet来监听的,spring使用linstener监听的,他们之间的启动顺序,web容器有又一个即,
第一:context-param
第二:Listerer
第三:Filter
第四:servlet
这样的启动顺序是有一定联系的
总结
一张图胜过千言万语哈!
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