使用传统文件上传方式

1、配置依赖

  <properties>

    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

    <maven.compiler.source>1.7</maven.compiler.source>

    <maven.compiler.target>1.7</maven.compiler.target>

    <spring.version>5.0.2.RELEASE</spring.version>

  </properties>

  <dependencies>

    <!-- spring -->

    <dependency>

      <groupId>org.aspectj</groupId>

      <artifactId>aspectjweaver</artifactId>

      <version>1.6.8</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-aop</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-context</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

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

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-web</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-orm</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-beans</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-core</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-test</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-webmvc</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-tx</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>junit</groupId>

      <artifactId>junit</artifactId>

      <version>4.12</version>

      <scope>compile</scope>

    </dependency>

    <dependency>

      <groupId>javax.servlet</groupId>

      <artifactId>servlet-api</artifactId>

      <version>2.5</version>

      <scope>provided</scope>

    </dependency>

    <dependency>

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

      <artifactId>jsp-api</artifactId>

      <version>2.0</version>

      <scope>provided</scope>

    </dependency>

    <!-- javaweb传统文件上传-->

    <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>jstl</groupId>

      <artifactId>jstl</artifactId>

      <version>1.2</version>

    </dependency>

    <dependency>

      <groupId>junit</groupId>

      <artifactId>junit</artifactId>

      <version>4.11</version>

      <scope>test</scope>

    </dependency>

  </dependencies>

2、配置web.xml

<!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>

  <!--配置前端控制器-->

  <servlet>

    <servlet-name>dispatcherServlet</servlet-name>

    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

    <!--加载springmvc.xml配置文件-->

    <init-param>

      <param-name>contextConfigLocation</param-name>

      <param-value>classpath:springmvc.xml</param-value>

    </init-param>

    <!--启动服务器，创建该servlet-->

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

  </servlet>

  <servlet-mapping>

    <servlet-name>dispatcherServlet</servlet-name>

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

  </servlet-mapping>

  <!--解决中文乱码的过滤器-->

  <filter>

    <filter-name>characterEncodingFilter</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>

  </filter>

  <filter-mapping>

    <filter-name>characterEncodingFilter</filter-name>

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

  </filter-mapping>

</web-app>

3、配置springmvc.xml（注意配置视图解析器对象 ）

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

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

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

       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.xsd

       http://www.springframework.org/schema/mvc

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

       http://www.springframework.org/schema/context

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

    <!--开启注解扫描，只扫描Controller注解-->

    <context:component-scan base-package="cn.flypig666">

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

    </context:component-scan>

    <!--配置的视图解析器对象-->

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

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

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

    </bean>

    <!--&lt;!&ndash;配置的视图解析器对象&ndash;&gt;-->

    <!--<bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">-->

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

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

    <!--</bean>-->

    <!--过滤静态资源-->

    <!--<mvc:resources location="/css/" mapping="/css/**" />-->

    <!--<mvc:resources location="/fonts/" mapping="/fonts/**"/>-->

    <!--<mvc:resources location="/images/" mapping="/images/**" />-->

    <!--<mvc:resources location="/js/" mapping="/js/**" />-->

    <!--开启SpringMVC注解的支持-->

    <mvc:annotation-driven/>

</beans>

4、编写jsp

    <h3>文件上传</h3>

    <form action="file/upload1" method="post" enctype="multipart/form-data">

        选择文件：<input type="file" name="upload1" /><br/>

        <input type="submit" value="上传" />

    </form>

5、编写controller

@Controller

@RequestMapping("/file")

public class UploadFileController {

    @RequestMapping("/upload1")

    public String fileupload1(HttpServletRequest request) throws Exception {

        System.out.println("文件上传");

        // 使用fileupload组件完成组件上传

        // 上传的位置

        // request.getSession().getServletContext():拿到最大的域对象,getRealPath()：拿到某路径下的绝对路径

        String path = request.getSession().getServletContext().getRealPath("/uploads/");

        // 判断该路径是否存在

        File file = new File(path);

        if (!file.exists()){

            // 创建文件夹

            file.mkdirs();

        }

        // 解析request对象，获取上传文件项

        // 创建磁盘文件项工厂

        DiskFileItemFactory factory = new DiskFileItemFactory();

        ServletFileUpload upload = new ServletFileUpload(factory);

        // 解析request,返回一个list集合，集合里是文件项

        List<FileItem> items = upload.parseRequest(request);

        // 遍历

        for (FileItem item:items){

            // 进行判断，当前item对象是否是上传文件项

            if (item.isFormField()){

                // true说明普通表单向

            }else{

                // false说明是上传文件项

                // 获取上传文件名

                String filename = item.getName();

                // 把文件的名称设置为唯一值,uuid

                String uuid = UUID.randomUUID().toString().replace("-", "");

                filename = uuid + "_" + filename;

                // 完成文件上传

                item.write(new File(path,filename));

                // 删除临时文件,由于传统web上传会产生一个临时文件（>10kb）

                item.delete();

            }

        }

        return "success";

    }

}

最新文章

  1. Asp.Net跨平台：Ubuntu14.0+Mono+Jexus+Asp.Net
  2. final finally finalize
  3. js,格式化long类型日期封装
  4. CG绘画笔记
  5. top每个参数的意义
  6. [BZOJ - 2631] tree 【LCT】
  7. POJ 3356(最短编辑距离问题)
  8. 代码混淆 GSON完满解决
  9. [Echarts]用Echarts绘制饼状图
  10. 流API--初体验
  11. linux安装anaconda3 conda: command not found
  12. Linux或Windows上实现端口映射
  13. html单选按钮用jQuery中prop()方法设置
  14. Mesh无线网络的定义与WiFi的区别
  15. iOS：解决UITextView自适应高度粘贴大量文字导致显示不全的问题
  16. 项目（二）DNS解析——配置域名服务器
  17. 【转】caffe数据层及参数
  18. 『翻译』Access USB Devices on the Web
  19. 关于go1.6使用vendor的坑
  20. Servlet—基础

热门文章

  1. PHP算法之Z 字形变换
  2. android Toast提示异常：java.lang.RuntimeException: Can&#39;t create handler inside thread that has not called
  3. leetcode-第10周双周赛-5079-三个有序数组的交集
  4. DDOS 单例
  5. 数论剩余系——cf1089F
  6. Ubuntu-WPS无法输入中文
  7. BZOJ 2660 (BJOI 2012) 最多的方案
  8. CUDA 关于 BLOCK数目与Thread数目设置
  9. VS2010-MFC（对话框：向导对话框的创建及显示）
  10. java编程规约三