Spring
Foojava FooStringname
package comtonytest;
publicclass Foo {
private String name;
public String toStirng(){
returnFoo Name is : + thisname;
}
Setget
}
Barjava BarStringadd
package comtonytest;
publicclass Bar {
private String add;
public String toStirng(){
returnBar Add is : + thisadd;
}
Setget
}
Mainjava MainFooBar
package comtonytest;
publicclass Main {
private Foo foo;
private Bar bar;
public String toString(){
returnMain : [ + thisfootoStirng() + + thisbartoStirng() + ];
}
Setget
}
Springconfigbeansxml
<bean id=main class=comtonytestMain>
<property name=foo ref=foo></property>
<property name=bar ref=bar></property>
</bean>
<bean id=foo class=comtonytestFoo>
<property name=name value=Foo></property>
</bean>
<bean id=bar class=comtonytestBar>
<property name=add value=Bar></property>
</bean>
Testjava TestSpringmain
package comtonytest;
import orgntextApplicationContext;
import orgntextsupport
ClassPathXmlApplicationContext;
publicclass Test {
publicstaticvoid main(String[] args) {
String[] locations = {springconfigbeansxml};
ApplicationContext ctx = new ClassPathXmlApplicationContext(locations);
Main main = (Main) ctxgetBean(main);
systemoutprintln(main);
}
}
Test
Main : [Foo Name is :Foo Bar Add is :Bar]
)Spring package comtonytest;
import orgspringframeworkbeansfactoryannotationAutowired;
publicclass Main {
@Autowired
private Foo foo;
@Autowired
private Bar bar;
public String toString(){
returnMain : [ + thisfootoStirng() + + thisbartoStirng() + ];
}
}
Spring
<! BeanPostProcessor @Autowired Bean >
<bean class=orgspringframeworkbeansfactoryannotation
AutowiredAnnotationBeanPostProcessor/>
<!— main Bean >
<bean id=main class=comtonytestMain></bean>
<bean id=foo class=comtonytestFoo>
<property name=name value=Foo></property>
</bean>
<bean id=bar class=comtonytestBar>
<property name=add value=Bar></property>
</bean>
)Spring @Qualifier(foo)
publicclass Main {
@Autowired
@Qualifier(foo)
private Foo foo;
@Autowired
private Bar bar;
public String toString(){
returnMain : [ + thisfootoStirng() + + thisbartoStirng() + ];
}
}
<bean class=orgspringframeworkbeansfactoryannotation
AutowiredAnnotationBeanPostProcessor/>
<bean id=main class=comtonytestMain></bean>
<bean id=foo class=comtonytestFoo>
<property name=name value=Foo></property>
</bean>
<bean id=foo class=comtonytestFoo>
<property name=name value=Foo></property>
</bean>
<bean id=bar class=comtonytestBar>
<property name=add value=Bar></property>
</bean>
Testjava:
Main : [Foo Name is :Foo Bar Add is :Bar]
Springfoomain
)<context:annotationconfig/>Spring <context:annotationconfig/>
<context:annotationconfig/>
<bean id=main class=comtonytestMain></bean>
<bean id=foo class=comtonytestFoo>
<property name=name value=Foo></property>
</bean>
<bean id=foo class=comtonytestFoo>
<property name=name value=Foo></property>
</bean>
<bean id=bar class=comtonytestBar>
<property name=add value=Bar></property>
</bean>
<bean class=orgspringframeworkbeansfactoryannotation
AutowiredAnnotationBeanPostProcessor/>
<context:annotationconfig/>
<context:annotationconfig/> ) @Component
publicclass Foo {
private String name = Foos name;
public String toStirng(){
returnFoo Name is : + thisname;
}
}
@ComponentBean
Mainjava
@Component(main)
publicclass Main {
@Autowired
private Foo foo;
@Autowired
private Bar bar;
……
@Component <context:componentscan basepackage=comtonytest/>
SpringSpring 也为 Spring MVC引入了注释驱动功能现在我们无须让Controller继承任何接口无需在XML配置文件中定义请求和Controller的映射关系仅仅使用注释就可以让一个POJO具有Controller的绝大部分功能 —— Spring MVC框架的易用性得到了进一步的增强
） 基于注解的
由于Spring MVC的Controller必须事先是一个Bean所以 @Controller注解是不可缺少的请看下面的代码清单
代码清单
@Controller //Controller
publicclass FooController {
@Autowired
private FooService fooService;
@RequestMapping(/listdo) //URL
public String[] list() {
String[] list = fooServicegetAll();
systemoutprintln(list);
return list;
}
@RequestMapping(/deldo) //URL
publicvoid del(HttpServletRequest request HttpServletResponse response) {
fooServicedoDel(requestgetParameter(id));
}
}
@ControllerFooControllerjavaFooControllerjavaURLURL
） 一个Controller对应一个URL由请求参数决定请求处理方法
@Controller
@RequestMapping(/doFoodo)// URL
publicclass FooController {
@Autowired
private FooService fooService;
//listURL /doFoodo?mode=list
@RequestMapping(params = mode=list)
public String[] list() {
String[] list = fooServicegetAll();
systemoutprintln(list);
return list;
}
//delURL /doFoodo?mode=del
@RequestMapping(params = mode=del)
publicvoid del(HttpServletRequest request
HttpServletResponse response) {
fooServicedoDel(requestgetParameter(id));
}
}
让请求处理方法处理特定的HTTP请求如POST类型的请看下面的代码清单
） 让请求处理方法处理特定的 HTTP 请求方法
@Controller
@RequestMapping(/doFoodo)// URL
publicclass FooController {
//POST
@RequestMapping(params = mode=submit
method = RequestMethodPOST)
public String submit(HttpServletRequest request
HttpServletResponse response){
systemoutprintln( submit );
returnsuccess;
}
}
submitPOSTURL
） 处理方法入参绑定 URL 参数
代码清单
@Controller
@RequestMapping(/doFoodo)// URL
publicclass FooController {
@Autowired
private FooService fooService;
//delURL /doFoodo?mode=del&id=
@RequestMapping(params = mode=del)
public String del(int id) {
fooServicedoDel(id);
returnsuccess;
}
}
/doFoodo?mode=del&id=URL
Spring del() id del() id del() String Spring ModelAndView Spring MVC
@Controller
@RequestMapping(/doFoodo)// URL
publicclass FooController {
@Autowired
private FooService fooService;
//delURL /doFoodo?mode=del&id=
@RequestMapping(params = mode=del)
public String del(@RequestParam(id)int id) {
fooServicedoDel(id);
returnsuccess;
}
}
del() id @RequestParam(id) id URL
