-src -target -test.jar(你需要更新的jar包)

package com.foo.common.base.utils.development; import static org.junit.Assert.*; import java.io.File; import java.io.IOException; import java.util.Date; import java.util.Properties; import org.apache.commons.io.FileUtils; import org.junit.Test; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.core.io.ClassPathResource; public class JarUpdater {  public static final Logger logger = LoggerFactory    .getLogger(JarUpdater.class);  @Test  /**   * 更新com目录下的所有文件到jar的对应目录结构中去   *   * 一次成功的代码更新，我们断言jar的大小是不一样的   */  public void updateClass() throws IOException, InterruptedException {   ClassPathResource myPath = new ClassPathResource(     "jarUpdaterConfig.properties");   Properties p = new Properties();   p.load(myPath.getInputStream());   ClassUpdater classUpdater = new ClassUpdater().applySettings(p);   classUpdater.compileAndCopyClass();   String workingDirectory = p.getProperty("workingDirectory");   String jar4UpdateName = p.getProperty("jar4UpdateName");   // class compile path   String updateSourcePath = workingDirectory + "target";   // class root folder   String updateSourceDir = "com";   Date startDate = new Date();   File myJar = new File(workingDirectory + jar4UpdateName);   if (!myJar.isFile()) {    logger.error("file with following path {} does not exist.",      jar4UpdateName);    return;   }   long oldLength = myJar.length();   logger.info("Now ready to update jar file with name:{},size:{}",     myJar.getName(), myJar.length());   String myCommand = "jar uf " + workingDirectory + jar4UpdateName     + " -C " + updateSourcePath + " " + updateSourceDir;   logger.info("Update command【{}】", myCommand);   Runtime.getRuntime().exec(myCommand);   while (!FileUtils.isFileNewer(myJar, startDate)) {    logger.info("sleep for two seconds,checking changes...");    Thread.sleep(2000);   }   assertNotEquals(     "jar may not be updated successfully,check the code please",     oldLength, myJar.length());   logger.info("Now finish update jar file with size:{}", myJar.length());  } }