SpringMVC：文件下载

controller

package com.clj.test.down.util;

import java.io.File;
import java.io.IOException;

import org.apache.commons.io.FileUtils;
import org.springframework.context.annotation.Scope;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@Scope("prototype") 
@RequestMapping("/downloadFile")
public class DownloadController
{

    @RequestMapping("download")  
    public ResponseEntity<byte[]> download() throws IOException {  
        String path="D:\\workspace\\.metadata\\.plugins\\org.eclipse.wst.server.core\\tmp0\\wtpwebapps\\springMVC\\WEB-INF\\upload\\图片10（定价后）.xlsx";
        File file=new File(path);
        HttpHeaders headers = new HttpHeaders();  
        String fileName=new String("你好.xlsx".getBytes("UTF-8"),"iso-8859-1");//为了解决中文名称乱码问题
        headers.setContentDispositionFormData("attachment", fileName); 
        headers.setContentType(MediaType.APPLICATION_OCTET_STREAM); 
        return new ResponseEntity<byte[]>(FileUtils.readFileToByteArray(file),  
                                          headers, HttpStatus.CREATED);  
    }  
}

页面上提供下载文件的链接就可以了

<a href="./downloadFile/download" >下载</a>