我已經嘗試了堆棧溢出和外部的大部分內容問題：我有一個包含內容和表格的 pdf。我還需要解析表格和內容。APIs： https ://github.com/tabulapdf/tabula-java 我正在使用tabula-java它忽略了一些內容，并且表格單元格內的內容沒有以正確的方式分離。我的 PDF 有這樣的內容 DATE :1/1/2018 ABCD SCODE:FFFT --ACCEPTED-- USER:ADMIN BATCH:RR EEE CON BATCH ======================================================================= MAIN SNO SUB VALUE DIS % R 12 rr1 0125 24.5 SLNO DESC QTY TOTAL CODE FREE 1 ABD 12 90 BBNEW -NILL- 2 XDF 45 55 GHT55 MRP 3 QWE 08 77 CAT -NILL- ======================================================================= MAIN SNO SUB VALUE DIS % QW 14 rr2 0122 24.5 SLNO DESC QTY TOTAL CODE FREE 1 ABD 12 90 BBNEW -NILL- 2 XDF 45 55 GHT55 MRP 3 QWE 08 77 CAT -NILL-要轉換的表格代碼：public static void toCsv() throws ParseException { String commandLineOptions[] = { "-p", "1", "-o", "$csv", }; CommandLineParser parser = new DefaultParser(); try { CommandLine line = parser.parse(TabulaUtil.buildOptions(), commandLineOptions); new TabulaUtil(System.out, line).extractFileInto( new File("/home/sample/firstPage.pdf"), new File("/home/sample/onePage.csv")); } catch (Exception e) { e.printStackTrace(); } }tabula 甚至支持命令行界面java -jar TabulaJar/tabula-1.0.2-jar-with-dependencies.jar -p all -o $csv -b Pdfs我嘗試使用-c,--columns <COLUMNS>表格，它通過列邊界的 X 坐標獲取單元格但問題是我的 pdfs 內容是動態的。即表大小已更改。堆棧溢出中的這些鏈接和更多的力對我有用。
2 回答
守著一只汪
TA貢獻1872條經驗 獲得超4個贊
Apache基金會的項目很少
Tikka 支持廣泛的擴展，包括 pdf、ppt、xls。https://tika.apache.org/1.24.1/formats.html中提到了支持的格式
PDF Box - 特定于 pdf 相關功能
眼眸繁星
TA貢獻1873條經驗 獲得超9個贊
在此處查看使用 Java 將 PDF 提取為 CSV 的任何示例：https ://github.com/pdftables/java-pdftables-api 。每個頁面都是獨立考慮的，因此您的 PDF 的動態特性不應該成為問題。您可以在他們的網站上使用免費試用版。
package com.pdftables.examples;
import java.io.File;
import java.util.Arrays;
import java.util.List;
import org.apache.commons.io.FileUtils;
import org.apache.http.HttpEntity;
import org.apache.http.client.config.CookieSpecs;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
public class ConvertToFile {
private static List<String> formats = Arrays.asList(new String[] { "csv", "xml", "xlsx-single", "xlsx-multiple" });
public static void main(String[] args) throws Exception {
if (args.length != 3) {
System.out.println("Command line: <API_KEY> <FORMAT> <PDF filename>");
System.exit(1);
}
final String apiKey = args[0];
final String format = args[1].toLowerCase();
final String pdfFilename = args[2];
if (!formats.contains(format)) {
System.out.println("Invalid output format: \"" + format + "\"");
System.exit(1);
}
// Avoid cookie warning with default cookie configuration
RequestConfig globalConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.STANDARD).build();
File inputFile = new File(pdfFilename);
if (!inputFile.canRead()) {
System.out.println("Can't read input PDF file: \"" + pdfFilename + "\"");
System.exit(1);
}
try (CloseableHttpClient httpclient = HttpClients.custom().setDefaultRequestConfig(globalConfig).build()) {
HttpPost httppost = new HttpPost("https://pdftables.com/api?format=" + format + "&key=" + apiKey);
FileBody fileBody = new FileBody(inputFile);
HttpEntity requestBody = MultipartEntityBuilder.create().addPart("f", fileBody).build();
httppost.setEntity(requestBody);
System.out.println("Sending request");
try (CloseableHttpResponse response = httpclient.execute(httppost)) {
if (response.getStatusLine().getStatusCode() != 200) {
System.out.println(response.getStatusLine());
System.exit(1);
}
HttpEntity resEntity = response.getEntity();
if (resEntity != null) {
final String outputFilename = getOutputFilename(pdfFilename, format.replaceFirst("-.*$", ""));
System.out.println("Writing output to " + outputFilename);
final File outputFile = new File(outputFilename);
FileUtils.copyToFile(resEntity.getContent(), outputFile);
} else {
System.out.println("Error: file missing from response");
System.exit(1);
}
}
}
}
private static String getOutputFilename(String pdfFilename, String suffix) {
if (pdfFilename.length() >= 5 && pdfFilename.toLowerCase().endsWith(".pdf")) {
return pdfFilename.substring(0, pdfFilename.length() - 4) + "." + suffix;
} else {
return pdfFilename + "." + suffix;
}
}
}
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