Spring MVC中使用ExtJS上传文件

文件上传功能是Web开中，不可或缺的功能。

本博文主要讲解在Spring MVC使用ExtJS进行文件的上传。

/mzsxBlog/src/config/springmvc.xml

这是SpringMVC的配置文件，文件上传的配置如下：

前台JSP如下：

<%@ page language="java" pageEncoding="UTF-8"%>


    
    <%
    String contextPath = request.getContextPath();
    %>
        
        <%@ include file="/js/_scripts.jsp"%>
         
        
         
        
        
        
        
        
                           
        
  

    
 
    
    

    

后台的代码如下：

package com.mzsx.flie.contorller;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.json.JSONObject;
import org.apache.log4j.Logger;
import org.codehaus.jackson.map.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
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;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.servlet.ModelAndView;
import com.mzsx.admin.contorller.AdminContorller;
import com.mzsx.flie.service.FileService;
import com.mzsx.model.Admin;
import com.mzsx.model.FileLoading;
@Controller
@RequestMapping("file.sp")
public class FileContorller {
    @Autowired
    private FileService fileService;
    private static Logger logger = Logger.getLogger(AdminContorller.class);
    @RequestMapping(params = "method=upload", method = RequestMethod.POST)
    public void addFileUp(HttpServletRequest request,HttpServletResponse response) {
        Map map = new HashMap();
        FileLoading fileUp = new FileLoading();
        //获取用户
        Admin admin = (Admin) request.getSession().getAttribute("admin");
        int userid = admin.getId();//用户ID
        Date createdTime = new Date();
        //使用MultipartHttpServletRequest包装文件数据
        MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
        //目录命名格式如：*files2013-03-05-22
        SimpleDateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd");
        //构建图片保存的目录
        String logoPathDir = "/upload/file" + dateformat.format(new Date());
        //得到图片保存目录的真实路径
        String logoRealPathDir = request.getSession().getServletContext().getRealPath(logoPathDir);
        //根据真实路径创建目录
        File logoSaveFile = new File(logoRealPathDir);
        if (!logoSaveFile.exists())
            logoSaveFile.mkdirs();
        //页面控件的文件流
        MultipartFile multipartFile = multipartRequest.getFile("userfile");
        // 获取文件名/
        String filename = multipartFile.getOriginalFilename();
        fileUp.setFileOldName(filename);
        long time = createdTime.getTime(); // 时间
        int index = filename.lastIndexOf(".");
        if (index == -1) {
            filename = filename + "-" + time; // 文件名
            logger.info("文件名："+filename);
        } else {
            filename = filename.substring(0, index) + "-" + time
                    + filename.substring(index);
            logger.info("文件名："+filename);
        }
                    
        //设置属性值
        fileUp.setUserid(userid);
        fileUp.setFileNewName(filename);
        fileUp.setPath(logoRealPathDir);
        fileUp.setStatus(1);
        //拼成完整的文件保存路径加文件
        String fileName = logoRealPathDir + File.separator + filename;
        File file = new File(fileName);
        try {
            //保存上传文件
            multipartFile.transferTo(file);
            logger.info(filename+"上传成功！！！");
            try {
                //插入数据库
                fileService.insertFile(fileUp);
                map.put("success", "true");
            } catch (Exception e) {
                // TODO: handle exception
                map.put("success", "false");
                logger.error("异常出现："+e);
            }
            /*String json = "{success: true}";
            response.setContentType("text/html; charset=UTF-8");
            response.getWriter().write(json);
            response.flushBuffer();*/
            /*Map result = new HashMap(0);
            result.put("success", true);
            response.setContentType("text/html");
            ObjectMapper mapper = new ObjectMapper();
            mapper.writeValue(response.getOutputStream(), result);*/
            response.setContentType("text/html;charset=UTF-8"); 
            response.getWriter().write("{success:true}");
        } catch (IllegalStateException e) {
            logger.error("异常出现："+e);
        } catch (IOException e) {
            logger.error("异常出现："+e);
        }
        //response.setContentType("text/html; charset=UTF-8");
        //response.setContentType("application/json; charset=utf-8");
        //return new ModelAndView("jsonView", map);
        /*String json="{success : true}";
        HttpHeaders reHeaders=new HttpHeaders();
        reHeaders.setContentType(MediaType.TEXT_HTML);
        return new ResponseEntity(json,reHeaders,HttpStatus.OK);*/
                    
    }
                
}

效果图：

后台效果图：