c语言docx提取内部文档

你可以使用C语言中提供的LibreOffice SDK来提取docx文件中的内部文档。以下是一个基本的示例代码：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <osl/file.hxx>
#include <osl/process.h>
#include <com/sun/star/bridge/XBridgeFactory.hpp>
#include <com/sun/star/bridge/XBridge.hpp>
#include <com/sun/star/frame/XComponentLoader.hpp>
#include <com/sun/star/text/XTextDocument.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <com/sun/star/uno/Any.hxx>
#include <com/sun/star/uno/RuntimeException.hpp>
#include <com/sun/star/util/XCloseable.hpp>
#include <com/sun/star/lang/XMultiComponentFactory.hpp>
#include <com/sun/star/lang/DisposedException.hpp>
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <com/sun/star/lang/XSingleComponentFactory.hpp>
#include <com/sun/star/lang/XInitialization.hpp>
#include <com/sun/star/beans/PropertyValue.hpp>
#include <com/sun/star/container/XNameAccess.hpp>
#include <com/sun/star/text/XText.hpp>
#include <cppuhelper/bootstrap.hxx>
#include <cppuhelper/supportsservice.hxx>
#include "unoidl\com\sun\star\bridge\XBridgeFactory.idl"
#include "unoidl\com\sun\star\bridge\XBridge.idl"
#include "unoidl\com\sun\star\frame\XComponentLoader.idl"
#include "unoidl\com\sun\star\text\XTextDocument.idl"
#include "unoidl\com\sun\star\uno\XComponentContext.idl"
#include "unoidl\com\sun\star\uno\Any.idl"
#include "unoidl\com\sun\star\uno\RuntimeException.idl"
#include "unoidl\com\sun\star\util\XCloseable.idl"
#include "unoidl\com\sun\star\lang\XMultiComponentFactory.idl"
#include "unoidl\com\sun\star\lang\DisposedException.idl"
#include "unoidl\com\sun\star\lang\XMultiServiceFactory.idl"
#include "unoidl\com\sun\star\lang\XSingleComponentFactory.idl"
#include "unoidl\com\sun\star\lang\XInitialization.idl"
#include "unoidl\com\sun\star\beans\PropertyValue.idl"
#include "unoidl\com\sun\star\container\XNameAccess.idl"
#include "unoidl\com\sun\star\text\XText.idl"

using namespace com::sun::star::bridge;
using namespace com::sun::star::frame;
using namespace com::sun::star::text;
using namespace com::sun::star::uno;
using namespace com::sun::star::util;
using namespace rtl;
using namespace cppu;

int main(int argc, char* argv[])
{
    OUString fileUrl = OUString::createFromAscii("file:///C:/test.docx");
    OUString serviceName = OUString::createFromAscii("com.sun.star.bridge.UnoUrlResolver");
    OUString objectName = OUString::createFromAscii("uno:socket,host=localhost,port=2002;urp;StarOffice.ServiceManager");
    Sequence<PropertyValue> propSeq(0);
    Reference<XComponentContext> context = bootstrap();
    Reference<XMultiComponentFactory> factory(context->getServiceManager());
    Reference<XBridgeFactory> bridgeFactory(factory->createInstanceWithContext("com.sun.star.bridge.BridgeFactory", context));
    Reference<XBridge> bridge(bridgeFactory->createBridge(serviceName, objectName, propSeq));
    Reference<XComponentLoader> loader(bridge->getInstance("StarOffice.ComponentLoader"), UNO_QUERY);
    Reference<XInterface> component(loader->loadComponentFromURL(fileUrl, OUString::createFromAscii("_blank"), 0, Sequence<Any>()));
    Reference<XTextDocument> document(component, UNO_QUERY);
    Reference<XText> xText(document->getText());
    OUString text = xText->getString();
    printf("%s\n", OUStringToOString(text, RTL_TEXTENCODING_UTF8).getStr());
    Reference<XCloseable> closer(component, UNO_QUERY);
    closer->close(false);
    return 0;
}

在此示例中，我们使用LibreOffice SDK来加载docx文件，然后提取其中的文本内容。请注意，你需要将LibreOffice SDK包含在你的项目中，并且需要使用c++连接器来编译此代码。