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(); } }
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