Spring MultipartFile 上传与 excel处理

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转载来源http://blog.csdn.net/libaolin198706231987/article/details/52524133

一、配置

1、*-servlet.xml (WebApploicationContext)

<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="5000000"/>
<property name="maxInMemorySize" value="4096"/>
<property name="defaultEncoding" value="GBK"/>
</bean>

注意下面的commandClass值，

<bean name="/excelupload.do" class="test.ExcelUpload">
<property name="formView" value="atest"/>
<property name="successView" value="atest"/>
<property name="commandName" value="upload"/>
<property name="commandClass" value="test.UploadDTO"/>
</bean>

二、代码

1、使用MultipartFile

import java.io.Serializable;
import org.springframework.web.multipart.MultipartFile;
public class UploadDTOimplementsSerializable{
private MultipartFile file;
/**
* @return Returns the file.
*/
public MultipartFile getFile(){
return file;
}
/**
* @param file The file to set.
*/
public voidsetFile(MultipartFilefile){
this.file=file;
}
}

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Date;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.springframework.validation.BindException;
import org.springframework.web.bind.ServletRequestDataBinder;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.multipart.support.ByteArrayMultipartFileEditor;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.SimpleFormController;
public class ExcelUploadextends SimpleFormController{
protected ModelAndView onSubmit(HttpServletRequestrequest,
HttpServletResponse response, Object command,BindException errors)
throws Exception {
logger.info("Excel upload=================================start");
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest)request;
MultipartFile multipartFile = multipartRequest.getFile("file");
Enumeration names = request.getParameterNames();
while (names.hasMoreElements()){
String name = (String) names.nextElement();
logger.debug(name+"="+request.getParameter(name));
}
logger.info("Excel upload=================================end");
return super.onSubmit(request, response,command, errors);
}
}

2、不使用MultipartFile

import java.io.Serializable;
import org.springframework.web.multipart.MultipartFile;
public class UploadDTOimplementsSerializable{
private byte[]file;
/**
* @return Returns the file.
*/
public byte[]getFile(){
return file;
}
/**
* @param file The file to set.
*/
public voidsetFile(byte[]file){
this.file=file;
}
}

public class ExcelUpload extends SimpleFormController{
protected void initBinder(HttpServletRequest request,
ServletRequestDataBinder binder)throws ServletException{
binder.registerCustomEditor(byte[].class,
new ByteArrayMultipartFileEditor());
}
protected ModelAndView onSubmit(HttpServletRequestrequest,
HttpServletResponse response, Object command,BindException errors)
throws Exception {
logger.info("Excel upload=================================start");
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest)request;
MultipartFile multipartFile = multipartRequest.getFile("file");
logger.debug(Long.toString(multipartFile.getSize()));
logger.info("Excel upload=================================end");
return super.onSubmit(request, response,command, errors);
}
}

附：

1、另存上传文件

public void SaveFileFromInputStream(InputStreamstream,String path,
String filename)throwsIOException{
FileOutputStream fs = new FileOutputStream(path+"/" + filename);
byte[]buffer= new byte[1024* 1024];
int bytesum = 0;
int byteread = 0;
while ((byteread = stream.read(buffer))!=-1) {
bytesum += byteread;
fs.write(buffer, 0, byteread);
fs.flush();
}
fs.close();
stream.close();
}

2、Excel文件处理(POI - 2.5)

private int getTargetList(MultipartFile multipartFile,
HttpServletRequest request,Date insuranceBeginTime,String planCode)
throws Exception {
String fileType = "";
try {
String fileName = multipartFile.getOriginalFilename();
fileType = fileName.substring(fileName.lastIndexOf(".")+ 1,
fileName.lastIndexOf(".")+ 4);
} catch(Exception e){
logger.error(e);
fileType = "";
}
if (!fileType.toLowerCase().equals("xls")){
// throw new BusinessServiceException("导入的文件格式不正确，应该不是excel文件");
this.logger.debug("导入的文件格式不正确，应该不是excel文件");
return 0;
}
HSSFWorkbook wb = null;
try {
wb = new HSSFWorkbook(multipartFile.getInputStream());
// logger.debug(wb.getNumberOfSheets());
HSSFSheet sheet = wb.getSheetAt(0);
logger.debug("sheet name = "+wb.getSheetName(0));
for(int i= sheet.getFirstRowNum();i<=sheet.getLastRowNum();i++){
HSSFRow row = sheet.getRow(i);
Iterator cells = row.cellIterator();
while(cells.hasNext()){
HSSFCell cell = (HSSFCell) cells.next();
logger.debug(cell.getStringCellValue());
}
}
logger.debug("last row = "+sheet.getLastRowNum());
return wb.getNumberOfSheets();
// return sheet.getFirstRowNum();
} catch(Exception e){
logger.error(e);
// throw new
// BusinessServiceException("未知原因！保存Excel文件时，请不要将鼠标最终定位在Excel中的可以下拉选值的列上。");
}
// ApplicationContext ctx =
// ApplicationWebContexton.getInstance(request);
// IImportExcelTarget excelParser = (IImportExcelTarget)
// ctx.getBean(planCode);
// return excelParser.getTargetList(wb, request,
// insuranceBeginTime,planCode);
return 0;
}

3、request.parameters = 与上传文件同表单的 field value

<form action="excelupload.do"method="post" enctype="multipart/form-data"name="form1">
<tablewidth="100%"border="0" cellspacing="1" cellpadding="0">
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td><label>上传
<input type="file"name="file">
</label></td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> <inputname="assas"type="text"id="assas"value="asdsadas">
<input type="submit"name="Submit"value="提交"></td>
<td> </td>
</tr>
</table>
</form>

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Spring MultipartFile 上传 与 excel处理

Spring MultipartFile 上传与 excel处理