经测试能用springmvc的文件上传下载并解决ie8文件上传后提示下载
2016-11-18 17:44
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这两天领导让写一个文件上传下载的功能，由于是新手，忙了一天查资料，终于搞定了，经过测试了，给各位看一下，共同学习
一、先写测试好的上传功能
首先是实体类
然后是controller
前台jsp页面input的name必须与参数名相同，multipartFile
如果是多文件上传，参数定义为MultipartFile[] multipartFile就可以，然后里面遍历处理
然后是service
二、刚才经过测试，下载的也实现了，并解决ie8下载时文件名字乱码问题，代码如下
controller层：
相应前台
$.ajaxFileUpload({
url:'../FileUploadServlet',
secureuri:false,
fileElementId:'fileToUpload',//file标签的id
dataType: 'json',//返回数据的类型
data:{fileuuid:'3242354'},//一同上传的数据
success: function (data) {
},
error:{
}
});
});
最后把mapper也放出来吧，省的你们觉得代码不全看不懂。。
另一种写法
service
一、先写测试好的上传功能
首先是实体类
@Data
public class FileUpload {
private byte[] bytes; //输入字节流
private String fileName; //文件名字
private String fileuuid;
}然后是controller
前台jsp页面input的name必须与参数名相同，multipartFile
如果是多文件上传，参数定义为MultipartFile[] multipartFile就可以，然后里面遍历处理
@RequestMapping("/uploadFile")
@ResponseBody
public ExecuteResult<FileUpload> uploadFile(HttpServletRequest request, MultipartFile multipartFile) {
ExecuteResult<FileUpload> execute = new ExecuteResult<FileUpload>();//自己定义的结果集
FileUpload fileUpload = new FileUpload();//自己定义的实体类
try {
fileUpload.setFileName(multipartFile.getOriginalFilename());//获得文件名字，类如: 周报.xls
InputStream is = multipartFile.getInputStream();//从multipartFile中获得输入流
fileUpload.setBytes(IOUtils.toByteArray(is));//从输入流中获得字节流
IOUtils.closeQuietly(is);//关闭输入流
execute = fileUploadService.uploadFile(fileUpload);//调用service方法存放文件
response.setContentType("text/json;charset=UTF-8"); //解决ie8上传后提示下载的问题
} catch (IOException e) {
LOGGER.error("e", e);
execute.addErrorMessage(LOGGER.toString());
} catch (Exception e) {
LOGGER.error("e", e);
execute.addErrorMessage(LOGGER.toString());
}
return execute;
}然后是service
public ExecuteResult<FileUpload> uploadFile(FileUpload fileUpload) {
ExecuteResult<FileUpload> execute = new ExecuteResult<FileUpload>();
fileUpload.setFileuuid(UUID.randomUUID().toString());//生成uuid
String uploadPath = Env.getProperty(Env.FILE_UPLOAD_URL);//此处是项目中自己配置的上传路径"d:/"
String filePath = uploadPath + fileUpload.getFileuuid();//路径加UUID
File file = new File(filePath);//此文件会存放在指定文件夹下，文件名字为UUID，并且没有后缀名
try {
if (!new File(filePath).exists()) {//判断此文件是否存在了，因为是UUID名字，所以一般不会重复
FileUtils.writeByteArrayToFile(file, fileUpload.getBytes());//调用FileUtils的方法，将文件写到指定位置，第一个参数为file，第二个参数为输入字节流
}else {
fileUpload.setFileuuid(UUID.randomUUID().toString());
FileUtils.writeByteArrayToFile(new File(uploadPath + fileUpload.getFileuuid()), fileUpload.getBytes());
}
fileUploadMapper.uploadFile(fileUpload);
execute.setResult(fileUpload);
} catch (IOException e) {
LOGGER.error("e", e);
execute.addErrorMessage(LOGGER.toString());
} catch (Exception e) {
LOGGER.error("e", e);
execute.addErrorMessage(LOGGER.toString());
}
return execute;
}二、刚才经过测试，下载的也实现了，并解决ie8下载时文件名字乱码问题，代码如下
controller层：
@RequestMapping("/downloadFile")
@ResponseBody
public void fileDownLoad(HttpServletRequest request, HttpServletResponse response, String fileuuid) {
//String fileuuid = request.getParameter("fileuuid");
ExecuteResult<FileUpload> execute = new ExecuteResult<FileUpload>();
ServletContext application = request.getSession().getServletContext();
try {
execute = fileUploadService.dowloadFile(fileuuid);
byte[] bytes = execute.getResult().getBytes();
response.reset();
String fileName = execute.getResult().getFileName();
String userAgent = request.getHeader("User-Agent");
//针对IE或者以IE为内核的浏览器：
if (userAgent.contains("MSIE") || userAgent.contains("Trident")) {
fileName = java.net.URLEncoder.encode(fileName, "UTF-8");
} else {
//非IE浏览器的处理：
fileName = new String(fileName.getBytes("UTF-8"), "ISO-8859-1");
}
response.setHeader("Content-disposition", String.format("attachment; filename=\"%s\"", fileName));
// 先去掉文件名称中的空格,然后转换编码格式为utf-8,保证不出现乱码,这个文件名称用于浏览器的下载框中自动显示的文件名
//response.addHeader("Content-Disposition", "attachment;filename=" + new String(execute.getResult().getFileName().replaceAll(" ", "").getBytes("utf-8"), "iso8859-1"));
//response.addHeader("Content-Length", "" + bytes.length); //此处需要验证是否正确
//设置文件MIME类型
response.setContentType(application.getMimeType(fileName));
response.setCharacterEncoding("UTF-8");
OutputStream os = new BufferedOutputStream(response.getOutputStream());
os.write(bytes);
os.flush();
os.close();
} catch (IOException e) {
LOGGER.error("e", e);
} catch (Exception e) {
LOGGER.error("e", e);
}
}相应前台
<input type="file" name="multipartFile" id="fileUpload" class="colorblur" onblur="this.className='colorblur';" onfocus="this.className='colorfocus';"> <input type="submit" name="btnUpload" value="上传" id="btnUpload" class="btn">$('#fileToUpload').on('change', function() {
$.ajaxFileUpload({
url:'../FileUploadServlet',
secureuri:false,
fileElementId:'fileToUpload',//file标签的id
dataType: 'json',//返回数据的类型
data:{fileuuid:'3242354'},//一同上传的数据
success: function (data) {
},
error:{
}
});
});
最后把mapper也放出来吧，省的你们觉得代码不全看不懂。。
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//ibatis.apache.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="项目.dao.FileUploadMapper">
<resultMap id="fileResultMap" type="。。。。。。。。.FileUpload">
<result property="fileName" column="FILE_NAME" />
<result property="fileuuid" column="FILEUUID" />
</resultMap>
<insert id="uploadFile" parameterType="。。。。。。。。.FileUpload" >
INSERT INTO 表名 (FILE_NAME,FILEUUID)
VALUES (#{fileName},#{fileuuid})
</insert>
<select id="getFileUpload" resultMap="fileResultMap">
SELECT * FROM 表名
WHERE FILEUUID = #{fileuuid}
</select>
</mapper>另一种写法
import net.sf.json.JSONObject;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import javax.annotation.Resource;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
@Controller
@RequestMapping("/file")
public class FileUploadController {
private static final Logger LOGGER = LoggerFactory.getLogger(FileUploadController.class);
@Resource
private FileUploadService fileUploadService;
/**
*
* @param request
* @param multipartFile
* @return
*/
@RequestMapping("/uploadFile")
public ExecuteResult<FileUpload> uploadFile(HttpServletRequest request, MultipartFile multipartFile, String createBy, String document, String createUserName, HttpServletResponse response) {
ExecuteResult<FileUpload> execute = new ExecuteResult<FileUpload>();
InputStream is = null;
FileUpload fileUpload = new FileUpload();
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
try {
if (multipartFile == null) {
execute.addErrorMessage("上传文件为空");
response = checkPro(response, execute);
return null;
}
if (StringUtils.isBlank(createBy) || StringUtils.isBlank(createUserName)) {
execute.addErrorMessage("创建人或单据号为空");
response = checkPro(response, execute);
return null;
}
fileUpload.setFileName(multipartFile.getOriginalFilename());
fileUpload.setCreateBy(createBy);
fileUpload.setDocument(document);
fileUpload.setCreateUserName(createUserName);
fileUpload.setCreateDate(df.format(new Date()));
is = multipartFile.getInputStream(); //获得输入流
fileUpload.setBytes(IOUtils.toByteArray(is));
IOUtils.closeQuietly(is); //关闭输入流
execute = fileUploadService.uploadFile(fileUpload);
response = checkPro(response, execute);
response.getWriter().flush();
} catch (IOException e) {
LOGGER.error("e", e);
execute.addErrorMessage(e.getMessage());
} catch (Exception e) {
LOGGER.error("e", e);
execute.addErrorMessage(e.getMessage());
} finally {
if (is != null) {
try {
is.close();
} catch (IOException e) {
LOGGER.error("e", e);
execute.addErrorMessage(e.getMessage());
}
}
}
return null;
}
/**
*
* @param request
* @param response
*/
@RequestMapping("/downloadFile")
public void fileDownLoad(HttpServletRequest request, HttpServletResponse response, String fileuuid) {
ExecuteResult<FileUpload> execute = new ExecuteResult<FileUpload>();
ServletContext application = request.getSession().getServletContext();
OutputStream os = null;
try {
execute = fileUploadService.dowloadFile(fileuuid);
byte[] bytes = execute.getResult().getBytes();
response.reset();
String fileName = execute.getResult().getFileName();
String userAgent = request.getHeader("User-Agent");
//针对IE或者以IE为内核的浏览器：
if (userAgent.contains("MSIE") || userAgent.contains("Trident")) {
fileName = java.net.URLEncoder.encode(fileName, "gb2312");
} else {
//非IE浏览器的处理：
fileName = new String(fileName.getBytes("gb2312"), "ISO-8859-1");
}
response.setHeader("Content-disposition", String.format("attachment; filename=\"%s\"", fileName));
// 先去掉文件名称中的空格,然后转换编码格式为utf-8,保证不出现乱码,这个文件名称用于浏览器的下载框中自动显示的文件名
//response.addHeader("Content-Disposition", "attachment;filename=" + new String(execute.getResult().getFileName().replaceAll(" ", "").getBytes("utf-8"), "iso8859-1"));
//response.addHeader("Content-Length", "" + bytes.length); //此处需要验证是否正确
//设置文件MIME类型
response.setContentType(application.getMimeType(fileName));
response.setCharacterEncoding("gb2312");
os = new BufferedOutputStream(response.getOutputStream());
os.write(bytes);
os.flush();
} catch (IOException e) {
LOGGER.error("e", e);
} catch (Exception e) {
LOGGER.error("e", e);
} finally {
if (os != null) {
try {
os.close();
} catch (IOException e) {
LOGGER.error("e", e);
execute.addErrorMessage(e.getMessage());
}
}
}
}
@RequestMapping("/deleteFile")
@ResponseBody
public ExecuteResult<FileUpload> deleteFile(@RequestBody DocumentList documentList) {
ExecuteResult<FileUpload> executeResult = new ExecuteResult<FileUpload>();
List<String> documents = documentList.getDocuments();
if (documents.isEmpty() || null == documents.get(0)) {
executeResult.addErrorMessage("请至少选择一条单据");
return executeResult;
}
return fileUploadService.deleteFile(documents);
}
@RequestMapping("/getFilesByDocument")
@ResponseBody
public List<FileUpload> getFilesByDocument(String document) {
return fileUploadService.getFilesByDocument(document);
}
/*
判断项目是否和.net跨域并处理response
*/
public HttpServletResponse checkPro(HttpServletResponse response, ExecuteResult<FileUpload> execute) throws IOException {
if (APPNAME.OPPLERS.getAppName().equals(Env.getProperty(Env.KEY_SERVER_NAME))) {
response.setContentType("text/html; charset=GB2312"); //解决ie8上传后提示下载的问题
response.getWriter().write(JSONObject.fromObject(execute).toString() + "<script>document.domain='opple.com'</script>");
} else {
response.setContentType("text/html; charset=UTF-8"); //解决ie8上传后提示下载的问题
response.getWriter().write(JSONObject.fromObject(execute).toString());
}
return response;
}
}service
public class FileUploadServiceImpl implements FileUploadService {
private static final Logger LOGGER = LoggerFactory.getLogger(FileUploadServiceImpl.class);
@Getter@Setter
private FileUploadMapper fileUploadMapper;
/**
* 文件上传
* @param fileUpload 上传文件
* @return ExecuteResult<FileUpload>
*/
@Override
public ExecuteResult<FileUpload> uploadFile(FileUpload fileUpload) {
ExecuteResult<FileUpload> execute = new ExecuteResult<FileUpload>();
fileUpload.setFileuuid(UUID.randomUUID().toString());
String uploadPath = Env.getProperty(Env.FILE_UPLOAD_URL);
String filePath = uploadPath + fileUpload.getFileuuid();
File file = new File(filePath);
try {
if (!new File(filePath).exists()) {
FileUtils.writeByteArrayToFile(file, fileUpload.getBytes());
} else {
fileUpload.setFileuuid(UUID.randomUUID().toString());
FileUtils.writeByteArrayToFile(new File(uploadPath + fileUpload.getFileuuid()), fileUpload.getBytes());
}
fileUploadMapper.uploadFile(fileUpload);
fileUpload.setBytes(null);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
fileUpload.setCreateDate(sdf.format(new Date()));
execute.setResult(fileUpload);
} catch (IOException e) {
LOGGER.error("e", e);
execute.addErrorMessage(LOGGER.toString());
} catch (Exception e) {
LOGGER.error("e", e);
execute.addErrorMessage(LOGGER.toString());
}
return execute;
}
/**
* 文件下载
* @param fileuuid uuid
* @return ExecuteResult<FileUpload>
*/
@Override
public ExecuteResult<FileUpload> dowloadFile(String fileuuid) {
ExecuteResult<FileUpload> execute = new ExecuteResult<FileUpload>();
InputStream fis = null;
try {
FileUpload fileUpload = fileUploadMapper.getFileUpload(fileuuid);
String uploadPath = Env.getProperty(Env.FILE_UPLOAD_URL);
String filePath = uploadPath + fileUpload.getFileuuid();
fis = new BufferedInputStream(new FileInputStream(filePath));
byte[] buffer = IOUtils.toByteArray(fis);
fileUpload.setBytes(buffer);
execute.setResult(fileUpload);
fis.close();
} catch (IOException e) {
LOGGER.error("e", e);
execute.addErrorMessage(LOGGER.toString());
} catch (Exception e) {
LOGGER.error("e", e);
execute.addErrorMessage(LOGGER.toString());
} finally {
if (fis != null) {
try {
fis.close();
} catch (IOException e) {
LOGGER.error("e", e);
execute.addErrorMessage(LOGGER.toString());
}
}
}
return execute;
}
@Override
public ExecuteResult<FileUpload> deleteFile(List<String> list) {
ExecuteResult<FileUpload> execute = new ExecuteResult<FileUpload>();
String fileuuid = null;
String uploadPath = null;
String sPath = null;
File file = null;
boolean flag = false;
try {
// 判断目录或文件是否存在
for (int i = 0; i< list.size(); i++) {
fileuuid = list.get(i);
uploadPath = Env.getProperty(Env.FILE_UPLOAD_URL);
sPath = uploadPath + fileuuid;
file = new File(sPath);
if (file.exists()) {
// 判断是否为文件
if (file.isFile()) { // 为文件时调用删除文件方法
flag = deleteFileUtil(sPath);
if (flag) {
fileUploadMapper.deleteFile(fileuuid);
}
}
}
}
} catch (Exception e) {
LOGGER.error("e", e);
execute.addErrorMessage(e.getMessage());
}
return execute;
}
@Override
public List<FileUpload> getFilesByDocument(String document) {
return fileUploadMapper.getFilesByDocument(document);
}
/**
* 删除单个文件
* @param sPath 被删除文件的文件名
* @return 单个文件删除成功返回true，否则返回false
*/
public boolean deleteFileUtil(String sPath) {
boolean flag = false;
File file = new File(sPath);
// 路径为文件且不为空则进行删除
if (file.isFile() && file.exists()) {
file.delete();
flag = true;
}
return flag;
}
}
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