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)@springboottestpublic 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(); }}
以上就是springboot如何读取resources下的文件的详细内容。