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SpringMVC上传文件FileUpload使用方法详解

2019年07月19日 | 移动技术网IT编程 | 我要评论

本文实例为大家分享了springmvc上传文件fileupload的具体代码，供大家参考，具体内容如下

我是在已经搭建好的springmvc环境下，maven工程中的pom.xml所需要的jar包（其中spring上传文件的两个主要jar：commons-fileupload.jar和commons-io.jar）：

<project xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"
  xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelversion>4.0.0</modelversion>
  <groupid>com.zhihua</groupid>
  <artifactid>springmvc_fileupload</artifactid>
  <packaging>war</packaging>
  <version>0.0.1-snapshot</version>
  <name>springmvc_fileupload maven webapp</name>
  <url>http://maven.apache.org</url>
  <properties>
    <!-- spring版本号 -->
    <spring.version>3.2.8.release</spring.version>
    <!-- junit版本号 -->
    <junit.version>4.10</junit.version>
  </properties>
  <dependencies>
    <dependency>
      <groupid>junit</groupid>
      <artifactid>junit</artifactid>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <!-- springmvc上传文件依赖 -->
    <dependency>
      <groupid>commons-fileupload</groupid>
      <artifactid>commons-fileupload</artifactid>
      <version>1.3.1</version>
    </dependency>
    <!-- 添加spring依赖 -->
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-core</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-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-aop</artifactid>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-aspects</artifactid>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-tx</artifactid>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-jdbc</artifactid>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-web</artifactid>
      <version>${spring.version}</version>
    </dependency>
    <!--spring单元测试依赖 -->
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-test</artifactid>
      <version>${spring.version}</version>
      <scope>test</scope>
    </dependency>
    <!-- jstl标签支持 -->
    <dependency>
      <groupid>jstl</groupid>
      <artifactid>jstl</artifactid>
      <version>1.2</version>
    </dependency>
    <!-- servlet核心包 -->
    <dependency>
      <groupid>javax.servlet</groupid>
      <artifactid>javax.servlet-api</artifactid>
      <version>3.0.1</version>
      <scope>provided</scope>
    </dependency>
    <!--jsp -->
    <dependency>
      <groupid>javax.servlet.jsp</groupid>
      <artifactid>jsp-api</artifactid>
      <version>2.1</version>
      <scope>provided</scope>
    </dependency>
  </dependencies>
  <build>
    <finalname>springmvc_fileupload</finalname>
  </build>
</project>

在spring-mvc.xml中添加代码：

<!-- springmvc上传文件时，需要配置multipartresolver处理器 -->
  <bean id="multipartresolver" 
    class="org.springframework.web.multipart.commons.commonsmultipartresolver">
    <property name="defaultencoding" value="utf-8"></property>
    <property name="maxuploadsize" value="10485760000"></property>
    <property name="maxinmemorysize" value="40960"></property>
  </bean>

前端页面（fileupload.jsp）和上传成功返回页面（success.jsp）:

<%@ page language="java" contenttype="text/html; charset=utf-8"
  pageencoding="utf-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!doctype html public "-//w3c//dtd html 4.01 transitional//en" "http://www.w3.org/tr/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>springmvc-文件上传</title>
</head>
<body>
  <h1>采用流的方式上传文件</h1>
  <form name="form1" action="<c:url value='/fileupload/upload_01'/>" method="post" enctype="multipart/form-data">
    <input type="file" name="file_01"/>
    <input type="submit" value="fileupload"/>
  </form>
  <br>
  <h1>采用multipart提供的file.transfer方法上传文件1</h1>
  <form name="form2" action="<c:url value='/fileupload/upload_02'/>" method="post" enctype="multipart/form-data">
    <input type="file" name="file_02"/>
    <input type="submit" value="fileupload"/>
  </form>
  <br>
  <h1>采用multipart提供的file.transfer方法上传文件2</h1>
  <form name="form2" action="<c:url value='/fileupload/upload_03'/>" method="post" enctype="multipart/form-data">
    <input type="file" name="file_03"/>
    <input type="submit" value="fileupload"/>
  </form>
  <br>
  <h1>使用spring mvc提供的方法上传文件</h1>
  <form name="form2" action="<c:url value='/fileupload/upload_spring'/>" method="post" enctype="multipart/form-data">
    <input type="file" name="file_03"/>
    <input type="submit" value="fileupload"/>
  </form>
</body>
</html>

<%@ page language="java" contenttype="text/html; charset=utf-8"
  pageencoding="utf-8"%>
<!doctype html public "-//w3c//dtd html 4.01 transitional//en" "http://www.w3.org/tr/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>insert title here</title>
</head>
<body>
  <h2>文件上传成功！</h2>
</body>
</html>

controller 的代码：

package com.zhihua.controller;

import java.io.file;
import java.io.fileoutputstream;
import java.io.ioexception;
import java.io.inputstream;
import java.io.outputstream;
import java.util.date;
import java.util.iterator;

import javax.servlet.http.httpservletrequest;

import org.springframework.stereotype.controller;
import org.springframework.web.bind.annotation.requestmapping;
import org.springframework.web.bind.annotation.requestparam;
import org.springframework.web.multipart.multipartfile;
import org.springframework.web.multipart.multiparthttpservletrequest;
import org.springframework.web.multipart.commons.commonsmultipartfile;
import org.springframework.web.multipart.commons.commonsmultipartresolver;

@controller
@requestmapping("/fileupload")
public class fileuploadcontroller {

  /**
   * 通过流的方式上传文件
   * @requestparam("file") 将name=file控件得到的文件封装成commonsmultipartfile 对象
   * <请替换成功能描述> <br>
   * <请替换成详细描述>
   * @param file
   * @return
   * @author caizh
   * @since [1.0.0]
   * @version [1.0.0,2017年2月5日]
   */
  @requestmapping("/upload_01")  
  public string fileupload_1(@requestparam("file_01")commonsmultipartfile file)throws ioexception {
    //用来检测程序运行时间
    long starttime = system.currenttimemillis();
    system.out.println("filename:"+file.getoriginalfilename());

    try{
      //获取输出流
      outputstream os = new fileoutputstream("e:/"+new date().gettime()+file.getoriginalfilename());
      //获取输入流commonsmultipartfile中可以直接得到文件的流
      inputstream is = file.getinputstream();
      int temp;
      //一个一个字节的读取并写入
      while((temp=is.read())!=(-1)){
        os.write(temp);
      }
      os.flush();
      os.close();
      is.close();
    }catch(exception e){
      e.printstacktrace();
    }
    long endtime = system.currenttimemillis();
    system.out.println("方法一的运行时间："+string.valueof(endtime-starttime)+"ms");
    return "view/success";
  }

  /**
   * 采用file.transto 来保存上传的文件
   * <请替换成功能描述> <br>
   * <请替换成详细描述>
   * @param file
   * @return
   * @throws ioexception
   * @author caizh
   * @since [1.0.0]
   * @version [1.0.0,2017年2月5日]
   */
  @requestmapping("/upload_02")
  public string fileupload_2(@requestparam("file_02") commonsmultipartfile file)throws ioexception {
    long starttime = system.currenttimemillis();
    system.out.println("filename:"+file.getoriginalfilename());
    string path = "e:/"+new date().gettime()+file.getoriginalfilename();

    file newfile = new file(path);
    //通过commonsmultipartfile 的方法直接写文件
    file.transferto(newfile);
    long endtime = system.currenttimemillis();
    system.out.println("方法二的运行时间："+string.valueof(endtime-starttime)+"ms");
    return "view/success";    
  }

  /**
   * 使用multipartfile上传文件
   * <请替换成功能描述> <br>
   * <请替换成详细描述>
   * @param file
   * @return
   * @author caizh
   * @since [1.0.0]
   * @version [1.0.0,2017年2月5日]
   */
  @requestmapping("/upload_03")
  public string fileupload_3(@requestparam(value="file_03",required=false)multipartfile file,
      httpservletrequest request){
    string path = request.getsession().getservletcontext().getrealpath("upload");
    system.out.println(path);
    string filename = file.getoriginalfilename();
    file targetfile = new file(path,filename);
    if(!targetfile.exists()){
      targetfile.mkdirs();
    }
    //保存
    try {
      file.transferto(targetfile);
    }catch(exception e){
      e.printstacktrace();
    }
    return "view/success";
  }

  /**
   * 采用spring提供的上传文件的方法
   * <请替换成功能描述> <br>
   * <请替换成详细描述>
   * @param request
   * @return
   * @throws illegalstateexception
   * @throws ioexception
   * @author caizh
   * @since [1.0.0]
   * @version [1.0.0,2017年2月5日]
   */
  @requestmapping("/upload_spring")
  public string springupload(httpservletrequest request)throws illegalstateexception, ioexception{
    long starttime = system.currenttimemillis();
    //将当前上下文初始化给 commonsmutipartresolver (多部分解析器)
    commonsmultipartresolver multipartresolver = new commonsmultipartresolver(request.getsession().getservletcontext());
    //检查form中是否有enctype="multipart/form-data"
    if(multipartresolver.ismultipart(request))
    {
      //将request变成多request
      multiparthttpservletrequest multirequest = (multiparthttpservletrequest)request;
      //获取multirequest中所有的文件名
      iterator iter = multirequest.getfilenames();

      while(iter.hasnext()){
        //一次遍历所有的文件
        multipartfile file = multirequest.getfile(iter.next().tostring());
        if(file!=null){
          string path = "e:/springupload"+file.getoriginalfilename();
          //上传
          file.transferto(new file(path));
        }
      }
    }
    long endtime = system.currenttimemillis();
    system.out.println("方法三的运行时间："+string.valueof(endtime-starttime)+"ms");    
    return "view/success";
  }

}

好了，全部代码都给出了，博主是测试成功了，感兴趣的朋友可以去比较不同上传方式的效率！

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持移动技术网。