java+jsp导入excel

jsp

<button onclick="shouye();" style="float: right;">返回首页</button>

<form id="excelForm" enctype="multipart/form-data" method="post" style="">

<table id="mainForm" >

<tr>

<td> 上传文件：</td>

<td><input type="file" name="file" id="files" onchange="importExcel()" /></td>

</tr>

<tr>

<td colspan="2" style="padding-top:3em; text-align: center; padding-right: 140px;">

<input type="submit" value="导入excel" onclick="isnull()" /></td>

<td> </td>

</table>

</form>

javascript

<script type="text/javascript">

var filePath;

function importExcel(){

var filename=$("#files").val();

var filePath=filename.substring(11,filename.length);

$('#excelForm').attr('action','${pageContext.request.contextPath}/`````````_importExcel.action?filePath='+filePath);

}

function shouye(){

window.location.href='${pageContext.request.contextPath}/`````````.test2.action';

}

</script>

action

private InputStream inputStream;

private String filePath; //文件路劲（全名称）

private File file;
//文件

//提交过来的file的名字
必须有

private String fileFileName;

//提交过来的file的MIME类型

private String fileContentType;

public String getFilePath() {

return filePath;

}

public void setFilePath(String filePath) {

this.filePath = filePath;

}

public String getFileContentType() {

return fileContentType;

}

public void setFileContentType(String fileContentType) {

this.fileContentType = fileContentType;

}

public File getFile() {

return file;

}

public void setFile(File file) {

this.file = file;

}

public String getFileFileName() {

return fileFileName;

}

public void setFileFileName(String fileFileName) {

this.fileFileName = fileFileName;

}

/**

* 导入excel

* @return

* @throws IOException

*/

public String test2() throws IOException{

ImportExcel im=new ImportExcel();

String root = ServletActionContext.getServletContext().getRealPath("/importExcel");

InputStream is = new FileInputStream(file);

File files=new File(root);

if (!files.exists()) {

files.mkdir();

}

OutputStream os = new FileOutputStream(new File(root, fileFileName));

byte[] buffer = new byte[500];

int length = 0;

try {

while(-1 != (length = is.read(buffer, 0, buffer.length)))

{

os.write(buffer);

}

os.close();

is.close();

} catch (IOException e) {

e.printStackTrace();

}

try {

im.read(lexiconService,(root+filePath),ClassifyAction.getTypeId());

inputStream =new ByteArrayInputStream("导入成功，且已成功入库".getBytes("utf-8"));

} catch (Exception e) {

try {

inputStream =new ByteArrayInputStream("导入失败".getBytes("utf-8"));

} catch (UnsupportedEncodingException e1) {

e1.printStackTrace();

}

}

return "importExcel";

}

ImportExcel （导入类）

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.InputStream;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import javassist.compiler.Lex;

import javax.annotation.Resource;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

import org.apache.poi.ss.usermodel.Cell;

import org.apache.poi.ss.usermodel.Row;

import org.apache.poi.ss.usermodel.Sheet;

import org.apache.poi.ss.usermodel.Workbook;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import org.bigdatacn.sfgk.filter.action.BaseAction;

import org.bigdatacn.sfgk.filter.service.LexiconService;

import org.bigdatacn.sfgk.filter.service.impl.LexiconServiceImpl;

import org.bigdatacn.sfgk.wlzbs.domain.Lexicon;

import org.bigdatacn.sfgk.wlzbs.domain.User;

import org.springframework.stereotype.Controller;

public class ImportExcel{

InputStream stream;

public void read(LexiconService lexiconService,String filePath,int typeId) throws IOException, ParseException {

String fileType = filePath.substring(filePath.lastIndexOf(".") + 1, filePath.length());

InputStream stream = new FileInputStream(filePath);

Workbook wb = null;

if (fileType.equals("xls")) {

wb = new HSSFWorkbook(stream);

}else if (fileType.equals("xlsx")) {

wb = new XSSFWorkbook(stream);

}else {

System.out.println("您输入的excel格式不正确");

}

Sheet sheet1 = wb.getSheetAt(0);

int num=0;

for (Row row : sheet1) {

if (num==0 || num==sheet1.getLastRowNum()) {

num++;

continue;

}

if (null== row.getCell(2) || row.getCell(2).toString()=="" ) {//若主要内容 没写 则不予通过

break;

}

实体类 le=new 实体();

le.setCreateDate(new SimpleDateFormat("yyyy-mm-dd hh:MM:ss").parse(row.getCell(1).toString()));

le.setContains(row.getCell(2).toString());

le.setType(typeId);

try {

System.out.println(lexiconService);

lexiconService.saveInfo(le);

} catch (Exception e) {

System.out.println("保存saveInfo失败");

}

}

}

}

maven的方式，在pom.xml中的配置

<!-- 加入POI核心依赖 -->

<dependency>

<groupId>org.apache.poi</groupId>

<artifactId>poi</artifactId>

<version>3.14</version>

</dependency>

若是不用maven的方式，则需要导入jar包