springboot 导入doc文档转成字符串返回

依赖1 MultipartFile转 File

package com.xingchen.common.utils;

import org.springframework.web.multipart.MultipartFile;

public class FilezUtils {

    public static File transferToFile(MultipartFile multipartFile) {
//        选择用缓冲区来实现这个转换即使用java 创建的临时文件 使用 MultipartFile.transferto()方法 。
        File toFile = null;
        if (multipartFile.equals("") || multipartFile.getSize() <= 0) {
          return null;
        } else {
            InputStream ins = null;
            try {
                ins = multipartFile.getInputStream();
                toFile = new File(multipartFile.getOriginalFilename());
                inputStreamToFile(ins, toFile);
                ins.close();
            }catch (Exception e){
                return null;
            }

        }
        return toFile;
    }

    /**
     * 获取流文件
     * @param ins
     * @param file
     */
    private static void inputStreamToFile(InputStream ins, File file) {
        try {
            OutputStream os = new FileOutputStream(file);
            int bytesRead = 0;
            byte[] buffer = new byte[8192];
            while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {
                os.write(buffer, 0, bytesRead);
            }
            os.close();
            ins.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 删除本地临时文件
     * @param file
     */
    public static void delteTempFile(File file) {
        if (file != null) {
            File del = new File(file.toURI());
            del.delete();
        }
    }


}

依赖二
file 转字符串

package com.xingchen.common.utils;

import org.apache.poi.hwpf.extractor.WordExtractor;
import org.apache.poi.xwpf.extractor.XWPFWordExtractor;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.*;
import java.io.File;
import java.io.FileInputStream;

public class WordUtils{
        public static String toString(File filePath) {
            String text = "";

            String fileName = filePath.getName().toLowerCase();// 得到名字小写
            try {
                FileInputStream in = new FileInputStream(filePath);
                if (fileName.endsWith(".doc")) { // doc为后缀的

                    WordExtractor extractor = new WordExtractor(in);
                    text = extractor.getText();
                }else if (fileName.endsWith(".docx")) { // docx为后缀的

                    XWPFWordExtractor docx = new XWPFWordExtractor(new XWPFDocument(in));
                    text = docx.getText();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }

            return text;
        }
}

控制器调用

    @PostMapping("/importDoc")
    public AjaxResult importDoc(MultipartFile file, boolean updateSupport) throws Exception {
        LngxPost post =new LngxPost();
        String str = "";
        boolean message = false;
        File filez = null;
        try {
            // 获取文件名

            filez= FilezUtils.transferToFile(file);
            str= WordUtils.toString(filez);
            return AjaxResult.success(str);
        } catch (Exception e) {
            e.printStackTrace();
        }

        return AjaxResult.error("文件解析失败");
    }

maven 依赖

        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>4.1.2</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-scratchpad</artifactId>
            <version>4.1.2</version>
            <scope>compile</scope>
        </dependency>