Spring MVC 配置
本文参考了,下面文章。
http://www.cnblogs.com/superjt/p/3309255.html
Web.xml:
<!-- Spring MVC 总servlet配置 --> <servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 可以自定义servlet.xml配置文件的位置和名称,默认为WEB-INF目录下,名称为[<servlet-name>]-servlet.xml,如spring-servlet.xml <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/spring-servlet.xml</param-value> 默认 </init-param> --> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> <!-- Spring Context 配置 --> <!-- ====================================== --> <listener> <listenerclass> org.springframework.web.context.ContextLoaderListener </listener-class> </listener> <!--Spring Context 配置文件所在目录, 会被上面的Listener使用。默认配置在WEB-INF目录下 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:config/applicationContext.xml</param-value> </context-param>
spring-servlet.xml
1. 此名称为不指定配置文件的默认名,
2. 还可以在web.XML总配置,
3. 也可以是 DispatcherServlet 的名字开头的一个文件名。
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/context <a href="http://www.springframework.org/schema/context/spring-context-3.0.xsd">http://www.springframework.org/schema/context/spring-context-3.0.xsd</a>"> <!-- 启用spring mvc 注解 --> <context:annotation-config /> <!-- 设置使用注解的类所在的jar包 --> <context:component-scan base-package="controller"></context:component-scan> <!-- 完成请求和注解POJO的映射 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" /> <!-- 对转向页面的路径解析。prefix:前缀, suffix:后缀 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/jsp/" p:suffix=".jsp" /> </beans>
Controller
Controller.java
@Controller @RequestMapping("/test2/login.do")可以作用在某个方法上。 @RequestMapping("/test2/login.do")可以作用在某个controller上, 函数上的URL会被追加到此URL后面 @RequestMapping 如果在方法上且不指定详细URL,就是controller的默认处理方法。 @RequestMapping(params = "method=1", method=RequestMethod.POST) URL参数 @RequestMapping("/test3/*")通配符 @RequestMapping(value="/comment/{blogId}", method=RequestMethod.POST) 路径参数化 public void comment(Comment comment,@PathVariable int blogId, HttpSession session, HttpServletResponse response) throws IOException { }
Spring MVC 参数:
可以是单个参数
可以是request/response,
可以是JAVA POJO,
可以指定是否为null,
如果是post JSON对象,必须用request的流来出去并且处理。 返回要用@ResponseBody来指定。
可以路径参数化
public ModelAndView testLogin2(String username, String password, int age) public String testLogin(@RequestParam(value="username")String username, String password, HttpServletRequest request) public ModelAndView testLogin3(User user) @RequestMapping(value="/comment/{blogId}", method=RequestMethod.POST) 路径参数化 public void comment(Comment comment,@PathVariable int blogId, HttpSession session, HttpServletResponse response) throws IOException { }
返回值
return "loginSuccess";//直接返回路径 return new ModelAndView("loginSuccess");//返回modelviever mv= new ModelAndView(); mv.add return mv //返回modelviever带数据 Spring 相关 @Resource(name = "loginService") //JAVA 标准的注解, 和@AutoWire一个功能。
This code uses Spring 4’s new@RestController
annotation, which marks the class as a controller where every method returns a domain object instead of a view. It’s shorthand for@Controller
and@ResponseBody
rolled together.