使用jxls技术导入Excel模版数据

xiaoxiao2021-02-28  138

接到一个需求,要求我把Excel中的数据导入 Java程序中作为查询条件,查询数据在做业务逻辑处理,刚接到任务第一反应用poi解析Excel获取数据,后来想想,我们的项目中之前导出都是用的jxls实现,而且还挺方便的jxls还有自己的标签(虽然标签有点坑),就想着有导出功能jxls肯定也有导入功能啦!尝试使用jxls导入,发现确实比我以前用poi自己手写方便多了,下面是部分代码及过程说明!

 

第一步:先确定好Excel导入的格式以及各表格字段值含义

 

第二步:定义好解析的XML--videoConfig.xml

 

 

<?xml version="1.0" encoding="UTF-8"?> <workbook> <worksheet name="Sheet1"> <section startRow="0" endRow="0"/> <loop startRow="1" endRow="1" items="videoInfoList" var="videoInfo" varType="com.iflytek.weike.job.bo.VideoInfo"> <section startRow="1" endRow="1"> <mapping row="1" col="0">videoInfo.index</mapping> <mapping row="1" col="1">videoInfo.videoName</mapping> <mapping row="1" col="2">videoInfo.resourceId</mapping> <mapping row="1" col="3">videoInfo.upload</mapping> <mapping row="1" col="4">videoInfo.content</mapping> <mapping row="1" col="5">videoInfo.schoolName</mapping> </section> <loopbreakcondition> <rowcheck offset="0"> <cellcheck offset="0"></cellcheck> </rowcheck> </loopbreakcondition> </loop> </worksheet> </workbook>

 

 第三步:生成一下解析的实体类VideoInfo(这个需要根据excel文件的列去手工写一个)

 

public class VideoInfo { //序号 private int index; //视频名称(全称) private String videoName; //视频资源ID private String resourceId; //上传者 private String upload; //课程说明 private String content; //学校名称 private String schoolName; public VideoInfo() { } public VideoInfo(int index, String videoName, String resourceId, String upload, String content, String schoolName) { super(); this.index = index; this.videoName = videoName; this.resourceId = resourceId; this.upload = upload; this.content = content; this.schoolName = schoolName; } public int getIndex() { return index; } public void setIndex(int index) { this.index = index; } public String getVideoName() { return videoName; } public void setVideoName(String videoName) { this.videoName = videoName; } public String getResourceId() { return resourceId; } public void setResourceId(String resourceId) { this.resourceId = resourceId; } public String getUpload() { return upload; } public void setUpload(String upload) { this.upload = upload; } public String getContent() { return content; } public void setContent(String content) { this.content = content; } public String getSchoolName() { return schoolName; } public void setSchoolName(String schoolName) { this.schoolName = schoolName; } @Override public String toString() { return "VideoInfo [index=" + index + ", videoName=" + videoName + ", resourceId=" + resourceId + ", upload=" + upload + ", content=" + content + ", schoolName=" + schoolName + "]"; } }

   第四步:添加jxls的jar包,我这里项目用maven管理jar包的版本是1.0.6大家可以去下面这个maven资源库下                载jar包  maven资源库地址:http://mvnrepository.com/open-source/excel-libraries;

 

第五步:windows弹框选择文件并解析Excel数据,这个windows文件框选择文件我以前还是真没做过在网上               找了一个很好用的方法请看代码:

[java] view plain copy /**      * 打开文件选择窗口选择导入文件      * @return 返回文件路径      * @throws Exception      */      public String getExcelPath() throws Exception{          UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());          JFileChooser jFileChooser=new JFileChooser();          int i = jFileChooser.showOpenDialog(null);           if(i== jFileChooser.APPROVE_OPTION){ //打开文件                                      String path = jFileChooser.getSelectedFile().getAbsolutePath();              String fileName = jFileChooser.getSelectedFile().getName();              String extName =fileName.substring(fileName.lastIndexOf(".")+1,fileName.length());              System.out.println("当前文件路径:"+path+";\n当前文件名:"+fileName+";\n当前文件扩展名:"+extName);              if(null!=extName&&"xlsx".equals(extName)){                  return path;              }else{                  System.out.println("您好,只能导入扩展名为xlsx的Excel文件!");                  return null;              }          }else{              System.out.println("没有选中文件");              return null;          }  }      /**      * 使用jxls解析导入的Excel      * @param path 导入文件路径      * @return List<VideoInfo> 导入对象集合      */      public List<VideoInfo> getExcelDataForVideoInfo(String path){          List<VideoInfo> videoInfoList = new ArrayList<VideoInfo>();          try {              InputStream inputXML = new BufferedInputStream(getClass().getClassLoader().getResourceAsStream(ConsForSystem.XML_CONFIG));              XLSReader mainReader = ReaderBuilder.buildFromXML( inputXML );              InputStream inputXLS = new BufferedInputStream(new FileInputStream(new File(path)));              VideoInfo videoInfo = new VideoInfo();              Map<String,Object> beans = new HashMap<String,Object>();              beans.put("videoInfo", videoInfo);              beans.put("videoInfoList", videoInfoList);              XLSReadStatus readStatus = mainReader.read( inputXLS, beans);              if(readStatus.isStatusOK()){                  System.out.println("jxls读取Excel成功!");              }          } catch (Exception e) {              e.printStackTrace();          }          return videoInfoList;      }  

    其中有个静态变量我是统一写在配置类中的:

     public static String XML_CONFIG ="videoConfig.xml";

 

     第六步:写一个main函数执行我们写好的方法试一下

     

[java] view plain copy public class Test {      public static void main(String[] args) {          SyncDataServiceImpl syncDataService = new SyncDataServiceImpl();          try {              String filePath = syncDataService.getExcelPath();              if(null!=filePath&&StringUtils.isNotBlank(filePath)){                  //导入Excel文件解析信息获取资源id                  List<VideoInfo> infoList = syncDataService.getExcelDataForVideoInfo(filePath);                  System.out.println("infoList大小==="+infoList.size());                  for(VideoInfo video:infoList){                      System.out.println("打印ideoInfo详细信息======"+video.toString());                  }              }          } catch (Exception e) {              e.printStackTrace();          }                }  }  

 

    其中SyncDataServiceImpl类是我把前面二个方法写到这个类里面了,里面还有一些其他的业务处理逻辑,就不贴上来了, new SyncDataServiceImpl()对象就可以调用刚才的方法了!

 下面的运行截图:

   

 运行结果截图,导入Excel成功:

  相比较POI来读取Excel数据个人觉得jxls用起来还是更方便一点!同时jxls导出Excel也是比较方便的,有自己的标签类似JSTL  

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