根据文件路径filepath 文件内容String类型的content 文件名称fileName 使用java转成doc文档 要是多张要带页码

要将文件内容转化成doc文档，需要使用Apache POI库来实现。以下是一个Java代码示例：

import java.io.File;
import java.io.FileOutputStream;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.usermodel.Range;

public class ConvertToDoc {
    public static void main(String[] args) throws Exception {
        String filepath = "example.txt";
        String content = "This is an example text.";
        String fileName = "example.doc";

        // Create a new Word document
        HWPFDocument document = new HWPFDocument();
        Range range = document.getRange();

        // Insert the content into the document
        range.insertAfter(content);

        // Save the document to a file
        FileOutputStream out = new FileOutputStream(new File(fileName));
        document.write(out);
        out.close();
    }
}

如果要将多个文件转换成多页的doc文档，可以先将每个文件转换成单页的doc文档，然后再将这些单页文档合并成一个多页文档。以下是一个Java代码示例：

import java.io.File;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.usermodel.Range;

public class ConvertToMultiPageDoc {
    public static void main(String[] args) throws Exception {
        List<String> filepaths = new ArrayList<>();
        filepaths.add("example1.txt");
        filepaths.add("example2.txt");
        String fileName = "example.doc";

        // Create a new Word document
        HWPFDocument document = new HWPFDocument();
        Range range = document.getRange();

        // Insert the content of each file into the document
        for (int i = 0; i < filepaths.size(); i++) {
            String filepath = filepaths.get(i);
            String content = "Page " + (i+1) + ": " + readFile(filepath) + "\n";
            range.insertAfter(content);
            if (i != filepaths.size() - 1) {
                range.insertAfter("\n");
            }
        }

        // Save the document to a file
        FileOutputStream out = new FileOutputStream(new File(fileName));
        document.write(out);
        out.close();
    }

    private static String readFile(String filepath) throws Exception {
        // Read the content of a file
        // This is just a simplified example, in reality you would want to handle exceptions and buffering
        return new String(java.nio.file.Files.readAllBytes(java.nio.file.Paths.get(filepath)));
    }
}

这个示例中，我们使用了一个`readFile`方法来读取文件内容。注意，在实际应用中，你需要对读取文件的过程进行错误处理和缓冲。