spring mvc 总结

依赖包

<!-- spring依赖 -->

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-core</artifactId>

        <version>4.2.9.RELEASE</version>

        <exclusions>

            <exclusion>

                <groupId>commons-logging</groupId>

                <artifactId>commons-logging</artifactId>

            </exclusion>

        </exclusions>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-beans</artifactId>

        <version>4.2.9.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-aop</artifactId>

        <version>4.2.9.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-aspects</artifactId>

        <version>4.2.9.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-tx</artifactId>

        <version>4.2.9.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-context</artifactId>

        <version>4.2.9.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-context-support</artifactId>

        <version>4.2.9.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-web</artifactId>

        <version>4.2.9.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-webmvc</artifactId>

        <version>4.2.9.RELEASE</version>

    </dependency>

    <!-- 结束 -->

    <!-- slf4j日志依赖，不用log4j -->

    <dependency>

        <groupId>org.slf4j</groupId>

        <artifactId>jcl-over-slf4j</artifactId>

        <version>1.5.8</version>

    </dependency>

    <dependency>

        <groupId>org.slf4j</groupId>

        <artifactId>slf4j-api</artifactId>

        <version>1.5.8</version>

    </dependency>

    <dependency>

        <groupId>org.slf4j</groupId>

        <artifactId>slf4j-log4j12</artifactId>

        <version>1.5.8</version>

    </dependency>

    <dependency>

        <groupId>log4j</groupId>

        <artifactId>log4j</artifactId>

        <version>1.2.14</version>

    </dependency>

    <!-- servlet运行依赖 -->

    <dependency>

        <groupId>javax.servlet</groupId>

        <artifactId>javax.servlet-api</artifactId>

        <version>3.1.0</version>

        <scope>provided</scope>

    </dependency>

    <dependency>

        <groupId>javax.servlet.jsp</groupId>

        <artifactId>javax.servlet.jsp-api</artifactId>

        <version>2.3.1</version>

        <scope>provided</scope>

    </dependency>

    <!-- jstl标签依赖 -->

    <dependency>

        <groupId>taglibs</groupId>

        <artifactId>standard</artifactId>

        <version>1.1.2</version>

    </dependency>

    <dependency>

        <groupId>javax.servlet</groupId>

        <artifactId>jstl</artifactId>

        <version>1.2</version>

    </dependency>

    <!-- springmvc返回json依赖 -->

    <dependency>

        <groupId>com.fasterxml.jackson.core</groupId>

        <artifactId>jackson-core</artifactId>

        <version>2.8.8</version>

    </dependency>

    <dependency>

        <groupId>com.fasterxml.jackson.core</groupId>

        <artifactId>jackson-annotations</artifactId>

        <version>2.8.8</version>

    </dependency>

    <dependency>

        <groupId>com.fasterxml.jackson.core</groupId>

        <artifactId>jackson-databind</artifactId>

        <version>2.8.8</version>

    </dependency>

    <!-- springmvc文件上传依赖 -->

    <dependency>

        <groupId>commons-fileupload</groupId>

        <artifactId>commons-fileupload</artifactId>

        <version>1.3.1</version>

    </dependency>

    <dependency>

        <groupId>commons-io</groupId>

        <artifactId>commons-io</artifactId>

        <version>2.4</version>

    </dependency>

    <dependency>

      <groupId>junit</groupId>

      <artifactId>junit</artifactId>

      <version>3.8.1</version>

      <scope>test</scope>

    </dependency>

  </dependencies>

  <build>

    <plugin>

        <groupId>org.apache.maven.plugins</groupId>

        <artifactId>maven-compiler-plugin</artifactId>

        <version>3.1</version>

        <configuration>

            <source>1.7</source>

            <target>1.7</target>

            <encoding>UTF-8</encoding>

        </configuration>

    </plugin>

</build>

springmvc初始化的方式

1.web.xml

<?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_3_0.xsd" id="WebApp_ID" version="3.0">

    <!-- spring mvc -->

    <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:spring-mvc.xml</param-value>

        </init-param>

        <load-on-startup>1</load-on-startup>

    </servlet>

    <servlet-mapping>

        <servlet-name>springMvc</servlet-name>

        <url-pattern>/</url-pattern>

    </servlet-mapping>

</web-app>

2.类初始化需要servlet 3.0以上

public class MyWebApplicationInitializer implements WebApplicationInitializer {

    @Override

    public void onStartup(ServletContext container) {

        ServletRegistration.Dynamic registration = container.addServlet("dispatcher", new DispatcherServlet());

        registration.setLoadOnStartup(1);

        registration.setInitParameter("contextConfigLocation", "classpath:spring-mvc.xml");

        registration.addMapping("/");

    }

}

springmvc 配置文件

<?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:aop="http://www.springframework.org/schema/aop"

    xmlns:context="http://www.springframework.org/schema/context"

    xmlns:mvc="http://www.springframework.org/schema/mvc"

    xmlns:p="http://www.springframework.org/schema/p"

    xmlns:util="http://www.springframework.org/schema/util"

    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd

        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.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.xsd

        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">

    <!-- 不用默认的扫描  用自定义的扫描 -->

    <context:component-scan base-package="com.controller" use-default-filters="false">

      <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>

      <context:include-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>

    </context:component-scan>

    <!-- 对应的整合spring的配置配置文件不扫描springmvc的注解，为了避免重复扫描创建两个对象 -->

    <!-- <context:component-scan base-package="com.controller">

      <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>

      <context:exclude-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>

    </context:component-scan> -->

    <!-- <context:component-scan base-package="com.handler"></context:component-scan> -->

    <!-- 对模型视图名称的解析，即在模型视图名称添加前后缀 -->

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="prefix" value="/WEB-INF/view/"></property>

        <property name="suffix" value=".jsp"></property>

    </bean>

    <!-- <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/WEB-INF/view/" p:suffix=".jsp" /> -->

    <!--自定义视图--> 
    <bean class="org.springframework.web.servlet.view.BeanNameViewResolver">
       <property name="order" value="100"></property>
    </bean> 

    <!--自定义视图-->

    <bean class="org.springframework.web.servlet.view.BeanNameViewResolver">

       <property name="order" value="100"></property>

    </bean> 

    <!-- <mvc:view-controller path="/success" view-name="/success"/> -->
    <!--静态文件的控制访问交由servlet去处理    比如当访问   /aaa/a.html时直接访问页面   配置后需添加mvc:annotation-driven-->

    <mvc:default-servlet-handler />

    <!--配置后一些springmvc会初始化一些默认的配置比如异常，返回 json的处理等-->
    <mvc:annotation-driven />

    <mvc:interceptors>
        <!--全局拦截器-->

        <bean class="com.interceptor.FirstInterceptor"></bean>

        <mvc:interceptor>
           <!--拦截指定路径-->

           <mvc:mapping path="/aaaa/"/>

           <bean class="com.interceptor.SecondInterceptor"></bean>

        </mvc:interceptor>

    </mvc:interceptors>

    <!--SimpleMappingExceptionResolver  自定义异常解析-->

    <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">

       <property name="exceptionAttribute" value="myexception"></property>

       <property name="exceptionMappings">

         <props>

           <prop key="java.lang.ArrayIndexOutOfBoundsException">error</prop>

         </props>

       </property>

    </bean>

    <!-- springmvc上传文件 -->

    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

     <property name="defaultEncoding" value="UTF-8"></property>

     <property name="maxUploadSize" value="5242880"></property>

    </bean>

</beans>

<context:component-scan base-package="com.jit" resource-pattern="/**/services/**/*.class"></context:component-scan>

springmvc 不拦截静态资源

方案一：拦截器中增加针对静态资源不进行过滤(涉及spring-mvc.xml)

注意：需引入mvc命名空间

<mvc:annotation-driven/>
<!--
通过mvc:resources设置静态资源，这样servlet就会处理这些静态资源，而不通过控制器
设置不过滤内容，比如:css,js,img 等资源文件
location指的是本地的真是路径，mapping指的是映射到的虚拟路径。
-->
<mvc:resources mapping="/css/**" location="/css/"/>

方案二：使用默认的servlet处理静态资源(涉及spring-mvc.xml，web.xml)

在spring-mvc.xml中添加：

<mvc:default-servlet-handler/>

<mvc:default-servlet-handler/>

在web.xml中添加：

<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.css</url-pattern>
<url-pattern>/css/*</url-pattern>
</servlet-mapping>

方案三：修改spring的全局拦截设置为*.do的拦截(涉及web.xml)

<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

spring获取注解类

ApiVersion apiVersion = AnnotationUtils.findAnnotation(handlerType, ApiVersion.class);

拦截器，配置多个拦截器的执行顺序会先执行第一个拦截器的preHandle 第二个拦截器的preHandle 之后反序

public class FirstInterceptor implements HandlerInterceptor{

    /**

     * 控制器访问后，渲染视图后，通常释放资源

     */

    @Override

    public void afterCompletion(HttpServletRequest arg0,

            HttpServletResponse arg1, Object arg2, Exception arg3)

            throws Exception {

        System.out.println("FirstInterceptor:afterCompletion");

    }

    /**

     * 控制器访问后，渲染视图前调用，通常改变请求值

     */

    @Override

    public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,

            Object arg2, ModelAndView view) throws Exception {

        //System.out.println(view==null);

        view.addObject("openid", "12121212");

        //arg3.addObject("openid", "123456");

        System.out.println("FirstInterceptor:postHandle");

    }

    /**

     * 请求控制类之间被调用，通常被用为权限，日志，事物等

     */

    @Override

    public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1,

            Object arg2) throws Exception {

        System.out.println("FirstInterceptor:preHandle");

        return true;

    }

}

springmvc 控制类全局异常处理

/**

 * 全局处理异常

 * @author Administrator

 *

 */

@ControllerAdvice

public class HandlerException {

    @ExceptionHandler({Exception.class})

    public ModelAndView handlerException(Exception e){

        e.printStackTrace();

        ModelAndView view = new ModelAndView("error");

        view.addObject("error",e);

        return view;

    }

}

自定义异常

@ResponseStatus(value=HttpStatus.FORBIDDEN,reason="页面没找到")

public class MyException extends RuntimeException{

    private static final long serialVersionUID = 1L;

}

控制类

@RequestMapping("/testMyException")

    public String testMyException(){

        int i = 9;

        if(i==9){

            throw new MyException();

        }

        return "hello"; 

    }

自定义视图，比如返回pdf excel

@Component

public class MyView implements View{

    @Override

    public String getContentType() {

        return "text/html";

    }

    @Override

    public void render(Map<String, ?> model, HttpServletRequest request,

            HttpServletResponse response) throws Exception {

        response.getWriter().write("111111111111111");

    }

}

控制类

@RequestMapping("/testMyView")

    public MyView testMyView(HttpServletRequest request,HttpServletResponse response,

            HttpSession session,Principal principal,Locale Locale,Writer writer,Reader reader){

        System.out.println("121212");

        //@CookieValue("j")

        return new MyView();

    }

consumes、produces 示例

cousumes的样例：

@Controller
@RequestMapping(value = "/pets", method = RequestMethod.POST, consumes="application/json")
public void addPet(@RequestBody Pet pet, Model model) {
// implementation omitted
}

方法仅处理request Content-Type为“application/json”类型的请求。

produces的样例：

@Controller
@RequestMapping(value = "/pets/{petId}", method = RequestMethod.GET, produces="application/json")
@ResponseBody
public Pet getPet(@PathVariable String petId, Model model) {
// implementation omitted
}

方法仅处理request请求中Accept头中包含了"application/json"的请求，同时暗示了返回的内容类型为application/json;

springmvc 控制类文件下载

    /**

     * 文件下载

     * @return

     */

    public ResponseEntity<byte[]> down(){

        ResponseEntity<byte[]> responseEntity = null;// = new ResponseEntity<byte[]>(body, headers, statusCode)

        return responseEntity;

    }

springmvc 控制类数据绑定，可用于表单提交html转义编码放置xss攻击等

@InitBinder

    public void initBinder(WebDataBinder binder) {

        // String类型转换，将所有传递进来的String进行HTML编码，防止XSS攻击

        binder.registerCustomEditor(String.class, new PropertyEditorSupport() {

            @Override

            public void setAsText(String text) {

                setValue(text == null ? null : StringEscapeUtils.escapeHtml4(text.trim()));

            }

            @Override

            public String getAsText() {

                Object value = getValue();

                return value != null ? value.toString() : "";

            }

        });

        // Date 类型转换

        binder.registerCustomEditor(Date.class, new PropertyEditorSupport() {

            @Override

            public void setAsText(String text) {

                setValue(DateUtils.parseDate(text));

            }

        });

        // Timestamp 类型转换

        binder.registerCustomEditor(Timestamp.class, new PropertyEditorSupport() {

            @Override

            public void setAsText(String text) {

                Date date = DateUtils.parseDate(text);

                setValue(date==null?null:new Timestamp(date.getTime()));

            }

        });

    }

springmvc @ModelAttribute

    /**

     * 访问控制类首先被调用会把myUser放到requestScope中，页面可用EL表达式获取，也可以在控制类其他方法中获取,如果表单提交会把u合并

     * @return

     */

    @ModelAttribute("myUser")

    public User getUser(){

        User u = new User();

        return u;

    }

    @RequestMapping("/addUser")

    public String addUser(@ModelAttribute("myUser") User u ){

        return "success";

    }

springmvc 获取多文件

boolean isFileUpload = ServletFileUpload.isMultipartContent(request);

MultipartHttpServletRequest multipartHttpServletRequest = (MultipartHttpServletRequest) req;

List<MultipartFile > files = multipartHttpServletRequest.getFiles("files");

String realPath = req.getSession().getServletContext().getRealPath("/");
String path = realPath + "\\upload\\"+year+"\\"+month+"\\";

File filepath = new File(path);
        if (!filepath.exists())
            filepath.mkdirs();
        // 文件保存路径
        String savePath = path + file.getOriginalFilename();
        // 转存文件
        file.transferTo(new File(savePath));

Filter Types 的5中类型：

1 . annotation 注解 org.springframework.stereotype.Controller 注解名（类型）

2. assignale 类名或者接口 org.example.someClass

3. aspectj 简单点就是就是切面表达式

4.regex 正则表达式

5. custom 实现了 org.springframework.core.type.TypeFilter 接口的类型

<beans>

<context:component-scan base-package="org.example">

<context:include-filter type="regex"

expression=".*Stub.*Repository"/>

<context:exclude-filter type="annotation"

expression="org.springframework.stereotype.Repository"/>

</context:component-scan>

</beans>

use-default-filters="false"关闭默认filter

springmvc 自定义映射规则

https://segmentfault.com/a/1190000021376498?utm_source=tag-newest