springMVC 文件下載

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.Component;
import org.springframework.web.bind.annotation.RequestMapping;

/**
 * <一句話功能簡述>
 * <功能詳細描述>
 * 
 * @author  Administrator
 * @version  [版本號, 2014年3月7日]
 * @see  [相關類/方法]
 * @since  [產品/模塊版本]
 */
@Component
@Scope("prototype") 
@RequestMapping("/downloadFile")
public class DownloadAction
{

    @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\\圖片10（訂價後）.xlsx";
        File file=new File(path);
        HttpHeaders headers = new HttpHeaders();  
        String fileName=new String("你好.xlsx".getBytes("UTF-8"),"iso-8859-1");//爲了解決中文名稱亂碼問題
        headers.setContentDispositionFormData("attachment", fileName); 
        headers.setContentType(MediaType.APPLICATION_OCTET_STREAM); 
        return new ResponseEntity<byte[]>(FileUtils.readFileToByteArray(file),  
                                          headers, HttpStatus.CREATED);  
    }  
}

在瀏覽器裏面寫一句，即可如下載文件

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

springMVC具體怎麼配置，請參看：

http://blog.csdn.net/clj198606061111/article/details/20492887