SpringMVC的上传和下载详解编程语言

import java.io.File; 
import java.io.IOException; 
import org.apache.commons.io.FileUtils; 
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 
public class MyController { 
 
    @RequestMapping("download.do")     
    public ResponseEntity<byte[]> download() throws IOException {     
        File file=new File("F://Y2//OA//.metadata//.me_tcat//webapps//SpringMVC_fileupload//images//111.jpg");   
        HttpHeaders headers = new HttpHeaders();     
        String fileName=new String("你好.jpg".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);     
    }     
     
}

<form action="${pageContext.request.contextPath}/frist.do" method="post" enctype="multipart/form-data"> 
     文件：<input type="file" name="uploadFile"/><br/> 
          <input type="submit" value="上传"/> 
</form>  
      
<a href="${pageContext.request.contextPath}/download.do?111.jpg">下载</a> 
注解版配置欢迎你的使用~~~