在我的应用程序中使用OSGI捆绑时出现java.lang.NoSuchMethodError错误

Question

我的应用程序使用的是Apache Poi 3.12版本，但我想使用4.1.0中的流式公式求值器（即SXSSFFormulaEvaluator.evaluateAllFormulaCells）。我无法升级罐子，所以我想到了使用OSGI捆绑软件进行公式评估，但出现以下错误：  java.lang.NoSuchMethodError：org.apache.poi.xssf.streaming.SXSSFFormulaEvaluator.evaluateAllFormulaCells（Lorg / apache / poi / ss / usermodel / Workbook;）V 我不确定是否可以以这种方式使用OSGI。

我创建了一个激活器和一个包含EvaluationAllFormulas（）及其实现类的服务，并从中创建了捆绑包。 在我的Java应用程序中，添加了以上捆绑包用于公式评估。

<form action="/new/" method="POST" class="form-group" id="new_card_form">
      {% csrf_token %}
      <div class="form-control form-control-lg">
        <strong>Full name:</strong>
        {% render_field form.cardholders_name type="input" %}
      </div>
      <div class="form-control form-control-lg">
        <strong>Card number:</strong>
        {% render_field form.card_number type="input" %}
      </div>
      <div class="form-control form-control-lg">
        <strong>Amount (in €):</strong>
        {% render_field form.card_balance type="input" %}
      </div>
      <!-- Input type submit bind jquery pop up message -->
      <input id="pop_up" type="submit" value="Submit" class="form-control btn btn-primary">
</form>

我希望OSGIBundle jar中的validateAllFormula（）可以正常工作，但出现错误：

package tutorial.example1;

import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceListener;
import org.osgi.framework.ServiceRegistration;

import tutorial.example1.client.HelloServiceImpl;
import tutorial.example1.service.HelloService;

import org.osgi.framework.ServiceEvent;

public class Activator implements BundleActivator, ServiceListener
{
private ServiceRegistration registration;
    public void start(BundleContext context)
    {
        registration = context.registerService(
                HelloService.class.getName(),
                new HelloServiceImpl(),
                null);
        System.out.println("Starting to listen for service events");
        context.addServiceListener(this);
    }

    public void stop(BundleContext context)
    {
        registration.unregister();
        context.removeServiceListener(this);
        System.out.println("Stopped listening for service events.");
    }

    public void serviceChanged(ServiceEvent arg0) {
        // TODO Auto-generated method stub

    }

}

package tutorial.example1.service;

import java.io.File;

public interface HelloService {
    public void evaluateAllFormula(File file);

}

package tutorial.example1.client;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;

import org.apache.poi.xssf.streaming.SXSSFFormulaEvaluator;
import org.apache.poi.xssf.streaming.SXSSFWorkbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import tutorial.example1.service.HelloService;
public class HelloServiceImpl implements HelloService{
    public void evaluateAllFormula(File file) {
        File tmpWorkBookFile = file;

        FileInputStream tmpWorkBookIS;
        try {
            tmpWorkBookIS = new FileInputStream(tmpWorkBookFile);
            XSSFWorkbook workbook = new XSSFWorkbook(tmpWorkBookIS);

            SXSSFWorkbook sxssfWorkbook =new SXSSFWorkbook(workbook);
            SXSSFFormulaEvaluator.evaluateAllFormulaCells(sxssfWorkbook);
            FileOutputStream tmpWorkBookOS = new FileOutputStream("Test234.xlsx");
            sxssfWorkbook.write(tmpWorkBookOS);
            tmpWorkBookOS.close();
            sxssfWorkbook.dispose();
            sxssfWorkbook.close();
            workbook.close();
            System.out.println("Done Formula evaluation");
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        catch(Exception e) {
        }

    }

}

<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>felix-tutorial</groupId>
    <artifactId>example-1</artifactId>
    <version>1.0</version>
    <packaging>bundle</packaging>

    <name>example-1</name>
    <url>http://maven.apache.org</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <!-- Build Configuration -->
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.felix</groupId>
                <artifactId>maven-bundle-plugin</artifactId>
                <extensions>true</extensions>
                <configuration>
                    <instructions>
                        <Embed-Dependency>*;scope=provided</Embed-Dependency>
                        <Embed-Transitive>true</Embed-Transitive>

                        <Bundle-SymbolicName>${pom.groupId}.${pom.artifactId}</Bundle-SymbolicName>
                        <Bundle-Name>Service listener example</Bundle-Name>
                        <Bundle-Description>A bundle that displays messages at startup
                            and
                            when service events occur</Bundle-Description>
                        <Bundle-Vendor>Apache Felix</Bundle-Vendor>
                        <Bundle-Version>1.0.0</Bundle-Version>
                        <Bundle-Activator>tutorial.example1.Activator</Bundle-Activator>
                        <Export-Package>tutorial.example1.service,
                        org.apache.poi;version="4.1.0",
                            org.apache.poi.common.*;version="4.1.0",
                            org.apache.poi.ddf.*;version="4.1.0",
                            org.apache.poi.extractor.*;version="4.1.0",
                            org.apache.poi.hpsf.*;version="4.1.0",
                            org.apache.poi.hssf.*;version="4.1.0",
                            org.apache.poi.poifs.*;version="4.1.0",
                            org.apache.poi.ss.*;version="4.1.0",
                            org.apache.poi.sl.*;version="4.1.0",
                            org.apache.poi.util.*;version="4.1.0",
                            org.apache.poi.wp.*;version="4.1.0",
                            org.apache.poi.ooxml.*;version="4.1.0",
                            org.apache.poi.openxml4j.*;version="4.1.0",
                            org.apache.poi.xddf.*;version="4.1.0",
                            org.apache.poi.xdgf.*;version="4.1.0",
                            org.apache.poi.xslf.*;version="4.1.0",
                            org.apache.poi.xssf.*;version="4.1.0",
                            org.apache.poi.xwpf.*;version="4.1.0"                           
                        </Export-Package>
                        <Import-Package>org.osgi.framework

                        </Import-Package>

                    </instructions>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <!-- Dependecies Management -->
    <dependencies>
        <dependency>
            <groupId>org.apache.felix</groupId>
            <artifactId>org.apache.felix.framework</artifactId>
            <version>2.0.4</version>
        </dependency>

        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>4.1.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>4.1.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-scratchpad</artifactId>
            <version>4.1.0</version>
            <scope>provided</scope>
        </dependency>

    </dependencies>
</project>

package test.test;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.poi.xssf.streaming.SXSSFWorkbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import tutorial.example1.client.HelloServiceImpl;
import tutorial.example1.service.HelloService;

public class TestOsgiExcel {
    public static void main(String[] args) {
        File tmpWorkBookFile = new File("TestTemplate.xlsx");


        try {
            FileInputStream tmpWorkBookIS = new FileInputStream(tmpWorkBookFile);
            XSSFWorkbook workbook = new XSSFWorkbook(tmpWorkBookIS);
            tmpWorkBookIS.close();
            //Method call will be there to write to excel
            SXSSFWorkbook sxssfWorkbook = new SXSSFWorkbook(workbook);
            FileOutputStream tmpWorkBookOS = new FileOutputStream("Test234.xlsx");
            sxssfWorkbook.write(tmpWorkBookOS);
            tmpWorkBookOS.close();
            sxssfWorkbook.dispose();
            sxssfWorkbook.close();
            workbook.close();
            System.out.println("Done Streaming");
            HelloService service = new HelloServiceImpl();
            service.evaluateAllFormula(new File ("Test234.xlsx"));
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}