    @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，讀取。在linux環(huán)境中無法讀取。（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，各種環(huán)境都能讀取。（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、結(jié)合spring注解，使用org.springframework.core.io.ResourceLoader;類的注解。（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();
    }
}

總結(jié)

到此這篇關(guān)于springboot讀取resources下文件的文章就介紹到這了,更多相關(guān)springboot讀取resources文件內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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