SpringMvc文件上传-白红宇

SpringMvc文件上传

阅读量：6277 次

发布时间：2019-06-22

本文共 5740 字，大约阅读时间需要 19 分钟。

package cn.jingbang.controller;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;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.bind.annotation.ResponseBody;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;/** * 为了实现文件上传的多种方式 * @author FangQiang * @Date 2017/11/16 */@Controllerpublic class UploadController {        @RequestMapping("/up.do")    public String up() {        return "/upfile.jsp";    }        @RequestMapping("/fileUpload1.do")    @ResponseBody                    public String fileUpload(@RequestParam("file") CommonsMultipartFile file,HttpServletRequest request) throws IOException {        String path = request.getSession().getServletContext().getRealPath("/")+"upload/"+file.getOriginalFilename();        System.out.println(path);        //这里使用默认的缓冲输出流        OutputStream os = new BufferedOutputStream(new FileOutputStream(path));        // 这里给字节流加了缓冲        InputStream inputStream = file.getInputStream();        byte[] b = new byte[1024];        int i;        while(inputStream.read(b) != -1) {            os.write(b);        }        inputStream.close();        os.close();        //ajax返还json        return "{\"success\":true}";    }        @RequestMapping("fileUpload2")    @ResponseBody    public String fileUpload(@RequestParam("file") MultipartFile file,HttpServletRequest request) throws Exception, IOException {        String path = request.getSession().getServletContext().getRealPath("/")+"upload/"+file.getOriginalFilename();        File newFile = new File(path);        file.transferTo(newFile);        return "{\"success\":true}";    }        @RequestMapping("springUpload")    @ResponseBody    public String  springUpload(HttpServletRequest request) throws IllegalStateException, IOException {        CommonsMultipartResolver resolver = new CommonsMultipartResolver(request.getSession().getServletContext());        //如果是多部件上传        if(resolver.isMultipart(request)) {            MultipartHttpServletRequest req = (MultipartHttpServletRequest) request;            //得到所有的fileNames            Iterator
     
       iter = req.getFileNames();            while(iter.hasNext()) {                MultipartFile file = req.getFile(iter.next().toString());                if(file != null) {                    String path = request.getSession().getServletContext()                            .getRealPath("/")+"upload/"+file.getOriginalFilename();                     file.transferTo(new File(path));                }            }        }        return "{\"success\":true}";    }}

package cn.jingbang.controller;

import java.io.BufferedOutputStream;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;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.bind.annotation.ResponseBody;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;

/** * 为了实现文件上传的多种方式 * @author FangQiang * @Date 2017/11/16 */@Controllerpublic class UploadController {@RequestMapping("/up.do")public String up() {return "/upfile.jsp";}@RequestMapping("/fileUpload1.do")@ResponseBodypublic String fileUpload(@RequestParam("file") CommonsMultipartFile file,HttpServletRequest request) throws IOException {String path = request.getSession().getServletContext().getRealPath("/")+"upload/"+file.getOriginalFilename();System.out.println(path);//这里使用默认的缓冲输出流OutputStream os = new BufferedOutputStream(new FileOutputStream(path));// 这里给字节流加了缓冲InputStream inputStream = file.getInputStream();byte[] b = new byte[1024];int i;while(inputStream.read(b) != -1) {os.write(b);}inputStream.close();os.close();//ajax返还jsonreturn "{\"success\":true}";}@RequestMapping("fileUpload2")@ResponseBodypublic String fileUpload(@RequestParam("file") MultipartFile file,HttpServletRequest request) throws Exception, IOException {String path = request.getSession().getServletContext().getRealPath("/")+"upload/"+file.getOriginalFilename();File newFile = new File(path);file.transferTo(newFile);return "{\"success\":true}";}@RequestMapping("springUpload")@ResponseBodypublic String springUpload(HttpServletRequest request) throws IllegalStateException, IOException {CommonsMultipartResolver resolver = new CommonsMultipartResolver(request.getSession().getServletContext());//如果是多部件上传if(resolver.isMultipart(request)) {MultipartHttpServletRequest req = (MultipartHttpServletRequest) request;//得到所有的fileNamesIterator<String> iter = req.getFileNames();while(iter.hasNext()) {MultipartFile file = req.getFile(iter.next().toString());if(file != null) {String path = request.getSession().getServletContext().getRealPath("/")+"upload/"+file.getOriginalFilename(); file.transferTo(new File(path));}}}return "{\"success\":true}";}}

转载于:https://www.cnblogs.com/fangqiangblog/p/7847303.html

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