问题描述：

我正在使用Redis数据库管理器，客户端是Jedis。如何将Redis DB值写入Excel工作表？

我已用java

System.out.println("Alphabets:"+Jedis.smembers("SET Name"); 

System.out.println("Books:"+Jedis.hgetall("key","value");

的输出是执行以下两个下面的查询，

1.首先打印语句输出

字母：[A，B，C， D，]

2.第二打印声明输出
本
书籍：食谱= [毗，JavaBook = Balaguru，的MacBook =史蒂夫]

在这里，我想要写上面的输出值代入单一练成片与下面格式

名称：字母列表

没有字母

一个

乙

Ç

d

标题：书籍列表

号簿名称。图书作者

食谱。毗湿奴

JavaBook。 Balaguru

的MacBook史蒂夫

字母都在Redis SET Command to get the SET values

书名值是关键，BOOKAUTHOR是第二个print语句输出

我见过很多教程Redis Hash值从数组中获取值并使用Apache poi动态写入Excel表。但是我得到的结果在这里看起来不像数组。

每次在结果中获得更多的值时，有没有办法动态地写入excel。

我的问题是如何正确地打印输出值传递到Excel对象并写入到Excel动态

请帮我在这。

感谢您的帮助提前。

[Jedis.smembers]（http://static.javadoc.io /redis.clients/jedis/2.9.0/redis/clients/jedis/Jedis.html#smembers-java.lang.String-）会返回一个'Set'和[Jedis.hgetAll]（http：//static.javadoc。 io/redis.clients/jedis/2.9.0/redis/clients/jedis/Jedis.html＃hgetAll-java.lang.String-）会返回一个Map。但是两者只需要**一个**参数而不是两个。因为它们是'Collections'，因此请阅读[关于Collections Framework的教程]（https://docs.oracle.com/javase/tutorial/collections/TOC.html）中的'Set'和'Map'。 –

是的你是对的，但如果我有更多的关键和价值单哈希然后hget所有带来他们所有@Axel里克特 – sathya

我只传递了一个正确的语法参数，并获得输出，我的查询是如何写入到Excel – sathya

答

你可以用Apache POI或Jasper Reports来完成。

的Apache POI

package q46617008; 

import java.io.OutputStream; 
import java.nio.file.Files; 
import java.nio.file.StandardOpenOption; 
import java.util.Iterator; 
import java.util.Map.Entry; 

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; 

public class ApacheExample 
{ 

    public void build(WorksheetExample w) throws Exception 
    { 

     Workbook wb = new XSSFWorkbook(); 

     Sheet s = wb.createSheet(); 
     // If you need to name it: 
     // String name = WorkbookUtil.createSafeSheetName("the name!"); 
     // Sheet s = wb.createSheet(name); 

     Row titleRow = s.createRow(0); 
     Cell titleCell = titleRow.createCell(0); 
     titleCell.setCellValue("Alphabets List"); 

     Row r; 
     Cell c; 
     int i = 1; 
     Iterator<String> alphabetsIterator = WorksheetExample.alphabets.iterator(); 
     while (alphabetsIterator.hasNext()) 
     { 
      String alphabet = alphabetsIterator.next(); 
      r = s.createRow(i); 
      c = r.createCell(0); 
      c.setCellValue(alphabet); 
      i++; 
     } 

     // Skip one line to start books list title. 
     // If you need this in another sheet, just create it: 
     // s = wb.createSheet(); 
     i++; 
     titleRow = s.createRow(i); 
     titleCell = titleRow.createCell(0); 
     titleCell.setCellValue("Books List"); 

     // Skip one line to start books list. 
     i++; 
     Iterator< Entry< String, String > > booksIterator = WorksheetExample.books.entrySet().iterator(); 
     while (booksIterator.hasNext()) 
     { 
      Entry< String, String > book = booksIterator.next(); 
      r = s.createRow(i); 
      c = r.createCell(0); 
      c.setCellValue(book.getKey() + ". " + book.getValue()); 
      i++; 
     } 

     OutputStream fileOut = Files.newOutputStream(w.file, StandardOpenOption.CREATE); 
     wb.write(fileOut); 
     fileOut.close(); 

     wb.close(); 
    } 

}

其结果将是这样的：

碧玉报告

您将需要一个碧玉报告JRXML文件：

<?xml version="1.0" encoding="UTF-8"?> 
<!-- Created with Jaspersoft Studio version 6.3.1.final using JasperReports Library version 6.3.1 --> 
<!-- 2017-10-13T16:31:09 --> 
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="Worksheet" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="0c9a4a90-2d7f-4793-bf61-9f72221b82b4"> 
    <property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/> 
    <property name="net.sf.jasperreports.export.xls.white.page.background" value="false"/> 
    <property name="net.sf.jasperreports.export.xls.detect.cell.type" value="true"/> 
    <property name="net.sf.jasperreports.print.keep.full.text" value="true"/> 
    <style name="Table_TH" mode="Opaque" backcolor="#F0F8FF"> 
     <box> 
      <pen lineWidth="0.5" lineColor="#000000"/> 
      <topPen lineWidth="0.5" lineColor="#000000"/> 
      <leftPen lineWidth="0.5" lineColor="#000000"/> 
      <bottomPen lineWidth="0.5" lineColor="#000000"/> 
      <rightPen lineWidth="0.5" lineColor="#000000"/> 
     </box> 
    </style> 
    <style name="Table_CH" mode="Opaque" backcolor="#BFE1FF"> 
     <box> 
      <pen lineWidth="0.5" lineColor="#000000"/> 
      <topPen lineWidth="0.5" lineColor="#000000"/> 
      <leftPen lineWidth="0.5" lineColor="#000000"/> 
      <bottomPen lineWidth="0.5" lineColor="#000000"/> 
      <rightPen lineWidth="0.5" lineColor="#000000"/> 
     </box> 
    </style> 
    <style name="Table_TD" mode="Opaque" backcolor="#FFFFFF"> 
     <box> 
      <pen lineWidth="0.5" lineColor="#000000"/> 
      <topPen lineWidth="0.5" lineColor="#000000"/> 
      <leftPen lineWidth="0.5" lineColor="#000000"/> 
      <bottomPen lineWidth="0.5" lineColor="#000000"/> 
      <rightPen lineWidth="0.5" lineColor="#000000"/> 
     </box> 
    </style> 
    <subDataset name="AlphabetsDataSet" uuid="725922ca-545f-4070-b9ed-5d9cd64508ff"> 
     <queryString> 
      <![CDATA[]]> 
     </queryString> 
     <field name="_THIS" class="java.lang.String"/> 
    </subDataset> 
    <subDataset name="BooksDataSet" uuid="f06a8881-d9b9-42dc-90c3-ee1f748045e6"> 
     <queryString> 
      <![CDATA[]]> 
     </queryString> 
     <field name="_THIS" class="java.util.Map.Entry"/> 
    </subDataset> 
    <parameter name="Alphabets" class="java.util.Set" nestedType="String"> 
     <parameterDescription><![CDATA[]]></parameterDescription> 
    </parameter> 
    <parameter name="Books" class="java.util.Map"/> 
    <queryString> 
     <![CDATA[]]> 
    </queryString> 
    <detail> 
     <band height="120" splitType="Stretch"> 
      <staticText> 
       <reportElement positionType="Float" x="0" y="0" width="555" height="20" uuid="6b9870c0-49f9-4540-ba5e-f131def81859"/> 
       <text><![CDATA[Alphabets List]]></text> 
      </staticText> 
      <staticText> 
       <reportElement positionType="Float" x="0" y="70" width="555" height="20" uuid="5d2a371c-4141-4728-afcf-6bdd326d4a40"/> 
       <text><![CDATA[Books List]]></text> 
      </staticText> 
      <componentElement> 
       <reportElement positionType="Float" x="0" y="20" width="555" height="30" uuid="5bca4983-9df0-4eee-8a5b-9cf3d5ef6965"> 
        <property name="com.jaspersoft.studio.layout" value="com.jaspersoft.studio.editor.layout.VerticalRowLayout"/> 
        <property name="com.jaspersoft.studio.table.style.table_header" value="Table_TH"/> 
        <property name="com.jaspersoft.studio.table.style.column_header" value="Table_CH"/> 
        <property name="com.jaspersoft.studio.table.style.detail" value="Table_TD"/> 
       </reportElement> 
       <jr:table xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd"> 
        <datasetRun subDataset="AlphabetsDataSet" uuid="e998d7ad-a964-447e-b3e7-b7ebfd6ed06b"> 
         <dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($P{Alphabets})]]></dataSourceExpression> 
        </datasetRun> 
        <jr:column width="120" uuid="739ad6b0-e886-4d7f-92d6-2cf0ef204ed6"> 
         <property name="com.jaspersoft.studio.components.table.model.column.name" value="Column1"/> 
         <jr:detailCell style="Table_TD" height="30"> 
          <textField> 
           <reportElement x="0" y="0" width="120" height="30" uuid="c02e9247-104c-426b-b538-27c048d213ac"/> 
           <box padding="5"/> 
           <textFieldExpression><![CDATA[$F{_THIS}]]></textFieldExpression> 
          </textField> 
         </jr:detailCell> 
        </jr:column> 
       </jr:table> 
      </componentElement> 
      <componentElement> 
       <reportElement positionType="Float" x="0" y="90" width="555" height="30" uuid="1ecc6ba3-a20e-4978-aee9-4113907135c7"> 
        <property name="com.jaspersoft.studio.layout" value="com.jaspersoft.studio.editor.layout.VerticalRowLayout"/> 
        <property name="com.jaspersoft.studio.table.style.table_header" value="Table_TH"/> 
        <property name="com.jaspersoft.studio.table.style.column_header" value="Table_CH"/> 
        <property name="com.jaspersoft.studio.table.style.detail" value="Table_TD"/> 
       </reportElement> 
       <jr:table xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd"> 
        <datasetRun subDataset="BooksDataSet" uuid="c09b4524-202e-436e-b6ba-74571e14c9af"> 
         <dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($P{Books}.entrySet())]]></dataSourceExpression> 
        </datasetRun> 
        <jr:column width="120" uuid="397f69ae-2f85-44fd-85fc-bca177628dab"> 
         <property name="com.jaspersoft.studio.components.table.model.column.name" value="Column1"/> 
         <jr:detailCell style="Table_TD" height="30"> 
          <textField> 
           <reportElement x="0" y="0" width="120" height="30" uuid="8d5fd0a8-7921-4871-8aa8-5360ac440f49"/> 
           <box padding="5"/> 
           <textFieldExpression><![CDATA[$F{_THIS}.getKey()+". "+$F{_THIS}.getValue()]]></textFieldExpression> 
          </textField> 
         </jr:detailCell> 
        </jr:column> 
       </jr:table> 
      </componentElement> 
     </band> 
    </detail> 
</jasperReport>

对于此示例，请将其保存为Worksheet.jrxml某处，但请记住该路径，因为我们将在下一步中使用它。

对于Java实现：

package q46617008; 

import java.nio.file.Files; 
import java.nio.file.StandardOpenOption; 
import java.util.HashMap; 
import java.util.Locale; 
import java.util.Map; 

import net.sf.jasperreports.engine.JRDataSource; 
import net.sf.jasperreports.engine.JREmptyDataSource; 
import net.sf.jasperreports.engine.JRParameter; 
import net.sf.jasperreports.engine.JasperCompileManager; 
import net.sf.jasperreports.engine.JasperExportManager; 
import net.sf.jasperreports.engine.JasperFillManager; 
import net.sf.jasperreports.engine.JasperPrint; 
import net.sf.jasperreports.engine.JasperReport; 
import net.sf.jasperreports.engine.export.JRPdfExporter; 
import net.sf.jasperreports.engine.export.ooxml.JRXlsxExporter; 
import net.sf.jasperreports.export.SimpleExporterInput; 
import net.sf.jasperreports.export.SimpleOutputStreamExporterOutput; 

public class JasperExample 
{ 

    private Map< String, Object > parameters; 

    private String filePath = "C:\\Path\\To\\Your\\Worksheet.jrxml"; 

    public JasperExample() { 

     parameters = new HashMap<>(); 
     // Define your locale or set it as a parameter 
     parameters.put(JRParameter.REPORT_LOCALE, new Locale("pt", "BR")); 
     parameters.put("Alphabets", WorksheetExample.alphabets); 
     parameters.put("Books", WorksheetExample.books); 
    } 

    public void exportPDF(WorksheetExample w) throws Exception 
    { 

     JRDataSource reportDataSource = new JREmptyDataSource(1); 

     JasperReport report = JasperCompileManager.compileReport(filePath); 

     JasperPrint jasperPrint = JasperFillManager.fillReport(report, parameters, reportDataSource); 

     JRPdfExporter exporter = new JRPdfExporter(); 
     exporter.setExporterInput(new SimpleExporterInput(jasperPrint)); 
     exporter.setExporterOutput(new SimpleOutputStreamExporterOutput(Files.newOutputStream(w.file, StandardOpenOption.CREATE))); 

     exporter.exportReport(); 
    } 

    public void exportXLSX(WorksheetExample w) throws Exception 
    { 

     JRDataSource reportDataSource = new JREmptyDataSource(1); 

     JasperReport report = JasperCompileManager.compileReport(filePath); 

     JasperPrint jasperPrint = JasperFillManager.fillReport(report, parameters, reportDataSource); 

     JRXlsxExporter exporter = new JRXlsxExporter(); 
     exporter.setExporterInput(new SimpleExporterInput(jasperPrint)); 
     exporter.setExporterOutput(new SimpleOutputStreamExporterOutput(Files.newOutputStream(w.file, StandardOpenOption.CREATE))); 

     exporter.exportReport(); 
    } 

}

其结果将是这样的：

在左侧看到XLSX输出。右边是PDF版本。

当然，还有很多优化的空间。
例如，您可以保存已编译的JRXML并加载它，这比每次需要编译时都快。

运行它

如果你需要一个简单的类来运行这些两个例子，用这一个：

package q46617008; 

import java.nio.file.Path; 
import java.nio.file.Paths; 
import java.util.Date; 
import java.util.HashMap; 
import java.util.HashSet; 
import java.util.Map; 
import java.util.Set; 

public class WorksheetExample 
{ 

    public static final Set<String> alphabets = new HashSet<>(); 

    public static final Map< String, String > books = new HashMap<>(); 

    public final Path file; 

    public WorksheetExample(String fileName) { 
     file = Paths.get("C:", "Path", "To", "Your", fileName); 
    } 

    static 
    { 
     alphabets.add("A"); 
     alphabets.add("B"); 
     alphabets.add("C"); 
     alphabets.add("D"); 

     books.put("Cookbook", "Vishnu"); 
     books.put("JavaBook", "Balaguru"); 
     books.put("MacBook", "Steve"); 
    } 

    public static void main(String[ ] args) throws Exception 
    { 

     WorksheetExample w; 

     w = new WorksheetExample("ApacheExample.xlsx"); 
     new ApacheExample().build(w); 

     w = new WorksheetExample("JasperExample.xlsx"); 
     new JasperExample().exportXLSX(w); 

     w = new WorksheetExample("JasperExample.pdf"); 
     new JasperExample().exportPDF(w); 
    } 

}

如何奖赏赏金给特定用户 – sathya

@vidya它是自动的，当赏金结束。你不需要做任何事情。我很高兴我的答案适合你！ – MiguelKVidal

它是一个干净清晰的例子 – sathya

如何将Redis DB值写入Excel工作表？

的Apache POI

碧玉报告

运行它

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