一、引入依赖

        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.3.5</version>
        </dependency>

二、直接读取返回

    public String getContent(String path){
        try {
            File file = ResourceUtils.getFile("classpath:"+path);    //获取项目路径中的文件
            return FileReader.create(file).readString();           //读取字符串
        } catch (FileNotFoundException e) {
            throw new RuntimeException(e);
        }
    }