请参阅以下任何使用Java将PDF提取为CSV的示例:
https://github.com/pdftables/java-pdftables-api
. 每个页面都是独立的,因此PDF的动态特性不应该成为问题。你可以在他们的网站上使用免费试用版。
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 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: ");
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;
}
}
}