运行项目时出现此错误。我正在使用Apache POI读取.xlsx文件，并且想在Solr核心上索引读取文件。我使用ContentStreamUpdateRequest来做到这一点。但是有一个错误，我无法修复。我的Java代码
package org.solr;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
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 static org.junit.Assert.assertNotNull;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Iterator;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.UUID;
import org.apache.solr.client.solrj.SolrClient;
import org.apache.solr.client.solrj.SolrQuery;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.client.solrj.impl.HttpSolrClient;
import org.apache.solr.client.solrj.impl.XMLResponseParser;
import org.apache.solr.client.solrj.request.AbstractUpdateRequest.ACTION;
import org.apache.solr.client.solrj.request.ContentStreamUpdateRequest;
import org.apache.solr.client.solrj.request.UpdateRequest;
import org.apache.solr.client.solrj.response.UpdateResponse;
import org.apache.solr.common.SolrInputDocument;
public class PoiJava {
private static final String fileName="C:\\Users\\FTK1187\\Desktop\\E-Archive - Copy\\TableArchive.xlsx";
public static void main(String Args[]) throws SolrServerException, IOException {
List dataList =new ArrayList();
FileInputStream excelFile=null;
try {
excelFile = new FileInputStream(new File(fileName));
Workbook workbook = new XSSFWorkbook(excelFile);
Sheet datatypeSheet = workbook.getSheetAt(0);
Iterator<Row> iterator = datatypeSheet.iterator();
final String urlString="http://localhost:8983/solr/archiveCore";
SolrClient solr=new HttpSolrClient.Builder(urlString).build();
SolrQuery query = new SolrQuery();
//SolrInputDocument document=new SolrInputDocument();
ContentStreamUpdateRequest req = new ContentStreamUpdateRequest("/update");
solr.deleteByQuery("*");
solr.commit();
req.addFile(new File("C:\\\\Users\\\\FTK1187\\\\Desktop\\\\E-Archive - Copy\\\\TableArchive.xlsx"),"text/csv");
while (iterator.hasNext()) {
Row currentRow = iterator.next();
Iterator<Cell> cellIterator = currentRow.iterator();
while (cellIterator.hasNext()) {
Cell currentCell = cellIterator.next();
//getCellTypeEnum shown as deprecated for version 3.15
//getCellTypeEnum ill be renamed to getCellType starting from version 4.0
if (currentCell.getCellTypeEnum() == CellType.NUMERIC) {
//System.out.println(currentCell.getNumericCellValue());
for(int k=0;k<currentRow.getLastCellNum();k++)
{
if(currentCell.getColumnIndex()==0)
{
req.setParam("literal.id", String.valueOf(currentCell.getNumericCellValue()));
}
}
}
else if (currentCell.getCellTypeEnum() == CellType.STRING) {
//System.out.println(currentCell.getStringCellValue());
for(int i=0;i<currentRow.getLastCellNum();i++)
{
if(currentCell.getColumnIndex()==1)
{
req.setParam("literal.NameAdded", currentCell.getStringCellValue());
}
else if(currentCell.getColumnIndex()==2)
{
req.setParam("literal.DateAdded", currentCell.getStringCellValue());
}
else if(currentCell.getColumnIndex()==3)
{
req.setParam("literal.NameModified", "");
}
else if(currentCell.getColumnIndex()==4)
{
req.setParam("literal.DateModified", "");
}
else if(currentCell.getColumnIndex()==5)
{
req.setParam("literal.strSO", currentCell.getStringCellValue());
}
else if(currentCell.getColumnIndex()==6)
{
req.setParam("literal.strCust", "");
}
else if(currentCell.getColumnIndex()==7)
{
req.setParam("literal.strOperator", "");
}
else if(currentCell.getColumnIndex()==8)
{
req.setParam("literal.PackName", currentCell.getStringCellValue());
}
else if(currentCell.getColumnIndex()==9)
{
req.setParam("literal.DocName", currentCell.getStringCellValue());
}
else if(currentCell.getColumnIndex()==10)
{
req.setParam("literal.DocType", currentCell.getStringCellValue());
}
else if(currentCell.getColumnIndex()==11)
{
req.setParam("literal.extType", currentCell.getStringCellValue());
}
else if(currentCell.getColumnIndex()==12)
{
req.setParam("literal.FileName", currentCell.getStringCellValue());
}
else if(currentCell.getColumnIndex()==13)
{
req.setParam("literal.Filepath", currentCell.getStringCellValue());
}
else if(currentCell.getColumnIndex()==14)
{
req.setParam("literal.NameDeleted", "");
}
else if(currentCell.getColumnIndex()==15)
{
req.setParam("literal.DateDeleted", currentCell.getStringCellValue());
}
else if(currentCell.getColumnIndex()==16)
{
req.setParam("literal.intRev", currentCell.getStringCellValue());
}
}
}
}
//System.out.println();
//updateRequest.add(document);
req.setAction(ACTION.COMMIT, true, true);
solr.request(req);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
}
catch(IOException e) {
e.printStackTrace();
}
}
}
当我运行这段代码时，它给了我这个错误
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
SLF4J: Failed to load class "org.slf4j.impl.StaticMDCBinder".
SLF4J: Defaulting to no-operation MDCAdapter implementation.
SLF4J: See http://www.slf4j.org/codes.html#no_static_mdc_binder for further details.
Exception in thread "main" org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error from server at http://localhost:8983/solr/archiveCore: Document is missing mandatory uniqueKey field: id
at org.apache.solr.client.solrj.impl.HttpSolrClient.executeMethod(HttpSolrClient.java:610)
at org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:279)
at org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:268)
at org.apache.solr.client.solrj.SolrClient.request(SolrClient.java:1219)
at org.solr.PoiJava.main(PoiJava.java:155)
我对代码进行了一些更改，所以我编辑了问题。它现在给我这个错误。