项目中很多时候需要读取自定义配置文件,本地开发工具怎么写都成功但是部署到服务其上就出现问题,
异常BOOT-INF/classes!/config.xml (文件名、目录名或卷标语法不正确.)路径中带有叹号之类的
了解了大概之后就是springboot打成jar是一个文件,也就是一个压缩包,没有办法读取压缩文件里的路径,因此要解决这个问题了解读取配置文件的原理,直接获取文件流就可以了。

1、使用项目内路径读取,只能在开发工具中使用,部署之后无法读取。(不通用)
类似:src/main/resources/default.xml
File file = new File("src/main/resources/default.xml");
- @Test
- public void testReadFile2() throws IOException {
- File file = new File("src/main/resources/default.xml");
- FileInputStream fis = new FileInputStream(file);
- InputStreamReader isr = new InputStreamReader(fis);
- BufferedReader br = new BufferedReader(isr);
- String data = null;
- while((data = br.readLine()) != null) {
- System.out.println(data);
- }
-
- br.close();
- isr.close();
- fis.close();
- }
2、使用org.springframework.util.ResourceUtils,读取。在linux环境中无法读取。(不通用)
File file = ResourceUtils.getFile("classpath:default.xml");
FileInputStream fis = new FileInputStream(file);
- @Test
- public void testReadFile3() throws IOException {
- File file = ResourceUtils.getFile("classpath:default.xml");
- FileInputStream fis = new FileInputStream(file);
- InputStreamReader isr = new InputStreamReader(fis);
- BufferedReader br = new BufferedReader(isr);
- String data = null;
- while((data = br.readLine()) != null) {
- System.out.println(data);
- }
-
- br.close();
- isr.close();
- fis.close();
- }
3、使用org.springframework.core.io.ClassPathResource,各种环境都能读取。(通用)
Resource resource = new ClassPathResource("resource.properties");
InputStream is = resource.getInputStream();
- @Test
- public void testReadFile() throws IOException {
- // ClassPathResource classPathResource = new ClassPathResource("default.xml");
- Resource resource = new ClassPathResource("default.xml");
- InputStream is = resource.getInputStream();
- InputStreamReader isr = new InputStreamReader(is);
- BufferedReader br = new BufferedReader(isr);
- String data = null;
- while((data = br.readLine()) != null) {
- System.out.println(data);
- }
-
- br.close();
- isr.close();
- is.close();
- }
4、结合spring注解,使用org.springframework.core.io.ResourceLoader;类的注解。(通用)
- import java.io.BufferedReader;
- import java.io.IOException;
- import java.io.InputStream;
- import java.io.InputStreamReader;
-
- import org.junit.Test;
- import org.junit.runner.RunWith;
- import org.springframework.beans.factory.annotation.Autowired;
- import org.springframework.boot.test.context.SpringBootTest;
- import org.springframework.core.io.Resource;
- import org.springframework.core.io.ResourceLoader;
- import org.springframework.test.context.junit4.SpringRunner;
-
- @RunWith(SpringRunner.class)
- @SpringBootTest
- public class ApplicationTests {
-
- @Autowired
- ResourceLoader resourceLoader;
-
-
- @Test
- public void testReaderFile() throws IOException {
- Resource resource = resourceLoader.getResource("classpath:default.xml");
- InputStream is = resource.getInputStream();
- InputStreamReader isr = new InputStreamReader(is);
- BufferedReader br = new BufferedReader(isr);
- String data = null;
- while((data = br.readLine()) != null) {
- System.out.println(data);
- }
-
- br.close();
- isr.close();
- is.close();
- }
- }
总结
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