Spring MVC使用

web.xml的配置

0.maven的引用

<dependencies>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>4.3.18.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.7</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-nop -->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-nop</artifactId>
      <version>1.7.25</version>
      <scope>test</scope>
    </dependency>


    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.18.RELEASE</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.3.18.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.9.2</version>
    </dependency>


    <!-- https://mvnrepository.com/artifact/com.zaxxer/HikariCP -->
    <dependency>
      <groupId>com.zaxxer</groupId>
      <artifactId>HikariCP</artifactId>
      <version>3.3.1</version>
    </dependency>

    <dependency>
      <groupId>org.hibernate</groupId>
      <artifactId>hibernate-core</artifactId>
      <version>5.1.17.Final</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

1.web.xlm的位置

01.png

2.基本的配置文档

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring1.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <servlet>
    <servlet-name>spring</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring1.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>spring</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

在application.xml中要应用以下语句

<mvc:annotation-driven/> 同时不要忘记对 <beans xmlns 进行配置

相关的java代码

1.映射地址

@RestController
@RequestMapping("/test")//自动的转为JSON格式，同时表示映射的地址，可以套用
public class TestSpring {
@RequestMapping(value = "get",method = RequestMethod.GET//为get,post等等)
    public Map list(){
    Map<String,Object> map=new HashMap<>();
    map.put("diyi",1354);

    return map;
    }
}

2.在MVC中使用Session

@RequestMapping("/check")
    public ModelAndView check(HttpSession session) {
        Integer i = (Integer) session.getAttribute("count");
        if (i == null)
            i = 0;
        i++;
        session.setAttribute("count", i);
        ModelAndView mav = new ModelAndView("check");
        return mav;
    }

3.接受表单数据

​ 控制器ProductController，准备一个add方法映射/addProduct路径

为add方法准备一个Product 参数，用于接收注入

最后跳转到showProduct页面显示用户提交的数据

注：

addProduct.jsp

提交的name和price会自动注入到参数 product里

注：

参数product会默认被当做值加入到ModelAndView 中，相当于：

mav.addObject("product",product);

@Controller
public class ProductController {
 
    @RequestMapping("/addProduct")
    public ModelAndView add(Product product) throws Exception {
        ModelAndView mav = new ModelAndView("showProduct");
        return mav;
    }
}

4.在MVC中获取Bean

 @RequestMapping(value = "getcup")
    public Cups getCup(){
WebApplicationContextwac=ContextLoader.getCurrentWebApplicationContext();
        Cups cups= (Cups) wac.getBean("cups");
        return cups;
    }

http://www.cnblogs.com/sam-uncle/p/8681515.html