WritableResource写文件ClassPathResource读文件

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package com.test.m2.t1;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import org.springframework.core.io.ClassPathResource;import org.springframework.core.io.PathResource;import org.springframework.core.io.Resource;import org.springframework.core.io.WritableResource;public class TCar {public static void main(String[] args) throws Exception{m1();m2();}/** * 这种方式打包后，无法运行，无法在jar包加载文件，需要分离出来 * @throws IOException */public static void m1() throws IOException{//String path=System.getProperty("user.dir")+"/src/main/resources/conf/1.txt"; (1)String path="src/main/resources/conf/1.txt"; //(2)   (1)(2)都可以，path = path.replace("\\", "/");WritableResource pathResource = new PathResource(path);OutputStream os = pathResource.getOutputStream();os.write("你好123".getBytes());os.close();System.out.println("-------------------->:ok");}/** * 读取classpath下的文件,打成jar仍可用 * @throws IOException */public static void m2() throws IOException{Resource r1=new ClassPathResource("conf/1.txt");InputStream is = r1.getInputStream();int n;ByteArrayOutputStream bos = new ByteArrayOutputStream();while((n=is.read())!=-1){bos.write(n);}System.out.println(bos.toString());bos.close();is.close();}}

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