springboot读取resources下的文件

第一种方法：

  resources:
    static-locations: file:c:/files/,classpath:/document/,classpath:/static/
  mvc:
    static-path-pattern: /**

第二种方法：

pom.xml配置文件路径

        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.xml</include>
                    <include>**/*.properties</include>
                    <include>**/*.html</include>
                    <include>**/*.xlsx</include>
                    <include>**/*.docx</include>
                    <include>/static/</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>

 

读取文件为InputStream的三种方法

一、

InputStream inputStream = Thread.currentThread().getContextClassLoader().getResourceAsStream("文件路径");

二、

InputStream inputStream = this.getClass().getResourceAsStream("文件路径");

ResourceUtils和ClassPathResource方式开发环境下可以读取到、生产环境下读取不到文件，因为项目在服务器启动的时候被打成了jar包，无法直接读取文件。其他三种都属于类加载器读取文件流。

ResourceUtils和ClassPathResource用法：

File file = ResourceUtils.getFile("classpath:excleTemplate/test.xlsx");
InputStream inputStream = new FileInputStream(file);

new ClassPathResource("/static/temp12.docx").getFile()