目录php
完整代码在这html
Spring 导出excel表格有不少种方法,能够直接用设置文件头的方法,也能够使用ContentNegotiatingViewResolver 直接将excel文件直接解析成view。java
首先,若是采用设置响应头的方式来导出excel文件,并不须要配置得很复杂,只要加上一个excel的处理库和Java-servlet库就能够。在这里,我使用了apache-poi库。web
完整pom配置文件spring
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.learn.springmvc</groupId>
<artifactId>SpringMVCExportFile</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>SpringMVCExportFile Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.11.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.11.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.3.11.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.3.11.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.11.RELEASE</version>
</dependency>
<!--Excel 依赖包-->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.10-beta2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>3.0-alpha-1</version>
</dependency>
</dependencies>
<build>
<finalName>SpringMVCExportFile</finalName>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
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package com.learn.com.learn.tool;
import org.apache.poi.hssf.usermodel.*;
import javax.servlet.ServletOutputStream;
public class ExcelExport {
public void export(String titles[], String datas[][], ServletOutputStream out) throws Exception{
try{
// 第一步,建立一个workbook,对应一个Excel文件
HSSFWorkbook workbook = new HSSFWorkbook();
// 第二步,在webbook中添加一个sheet,对应Excel文件中的sheet
HSSFSheet hssfSheet = workbook.createSheet("sheet1");
// 第三步,在sheet中添加表头第0行,注意老版本poi对Excel的行数列数有限制short
HSSFRow row = hssfSheet.createRow(0);
// 第四步,建立单元格,并设置值表头 设置表头居中
HSSFCellStyle hssfCellStyle = workbook.createCellStyle();
//居中样式
hssfCellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
HSSFCell hssfCell = null;
for (int i = 0; i < titles.length; i++) {
hssfCell = row.createCell(i);//列索引从0开始
hssfCell.setCellValue(titles[i]);//列名1
hssfCell.setCellStyle(hssfCellStyle);//列居中显示
}
int lens = datas.length;
for (int i = 1; i <= lens; i++) {
HSSFRow hssfRow = hssfSheet.createRow(i);
// 第四步,建立单元格,并设置值表头 设置表头居中
HSSFCellStyle style = workbook.createCellStyle();
//居中样式
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
HSSFCell cell = null;
int len = datas[i-1].length;
for (int j = 0; j < len; j++) {
cell = hssfRow.createCell(j);
cell.setCellValue(datas[i-1][j]);
cell.setCellStyle((hssfCellStyle));
}
}
// 第七步,将文件输出到客户端浏览器
try {
workbook.write(out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}catch(Exception e){
e.printStackTrace();
throw new Exception("导出信息失败!");
}
}
}
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在这个类中有一个导出excel文件的方法,这个方法接受三个参数。apache
第一个参数是表格的标题,是一个字符串类型的一维数组api
第二个参数是表格的数据,存储了表格中的全部数据数组
第三个参数是servlet的输出流,用来输出文件到浏览器浏览器
具体的poi库的用法能够参考这里bash
建立一个名为ExcelController的类, 类中建立一个方法叫excel,接受HttpServletResponse类型的参数。
修改 @RequestMapping注解为:
@RequestMapping(value = "excel", produces = "application/binary;charset=UTF-8")
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指明返回给浏览器的数据类型为二进制文件。
添加上 @ResponseBody注解
完整代码为:
package com.learn.controller;
import com.learn.com.learn.tool.ExcelExport;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
@Controller
public class ExcelController{
private ExcelExport excelExport = new ExcelExport();
/** * * @param response * @return */
@RequestMapping(value = "excel", produces = "application/binary;charset=UTF-8")
@ResponseBody
public String excel(HttpServletResponse response) {
try{
ServletOutputStream out=response.getOutputStream();
try {
//设置文件头:最后一个参数是设置下载文件名
response.setHeader("Content-Disposition", "attachment;fileName=" + URLEncoder.encode(1+".xls", "UTF-8"));
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}
String[] titles = { "用户id", "用户姓名", "用户密码", "用户年龄" };
String[][] datas = {{"1", "2"}, {"3", "4"}};
//调用导出excel文件方法
excelExport.export(titles,datas, out);
return "success";
} catch(Exception e){
e.printStackTrace();
return "导出信息失败";
}
}
}
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