在实际部署过程中,经常会遇到因为网速慢的原因导致上传war包的过程令人发指。笔者也因此事苦恼过,数次建议运维提网速无果后,特想出如下策略:
1. 比较两个war中的所有文件,以下new代表新war包,old代表线上的旧war包;
2. new中有的old没有的,直接复制;
3. new中有的old也有的,复制并覆盖;
4. new中没有的old有的,则删除;
5. 把有差异的文件移到_tmp目录中;
6. 在_tmp目录中生成相应的shell脚本用于复制、删除文件;
以下是对应的Java代码:
package alan_test;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.channels.FileChannel;
/** * 比较new和old两个目录中的所有文件且new的同级生成新的_tmp目录,存放有差异的文件,并生成相应的shell脚本 * 1. new中有的old没有的,直接复制 * 2. new中有的old也有的,复制并覆盖 * 3. new中没有的old有的,则删除 * * @author Alan * @date 2016年4月13日 下午4:48:39 * @version 2016年4月13日 Alan */
public class CompareTwoDirectory {
/** * 比较两个文件夹中的文件是否相同 * 注意:传入的路径请用"\\"分割(windows下,linux未验证) * * @param newDirectory * 新目录 * @param oldDirectory * 旧目录 */
public static void compare( String newDirectory, String oldDirectory ) {
// 从旧目录中取得工程名称
String[] oldDirectoryArray = oldDirectory.split("\\\\");
String projectName = oldDirectoryArray[oldDirectoryArray.length - 1];
compare(newDirectory, oldDirectory, projectName);
}
/** * 比较两个文件夹中的文件是否相同 * 注意:传入的路径请用"\\"分割(windows下,linux未验证) * * @param newDirectory * 新目录 * @param oldDirectory * 旧目录 * @param projectName * 工程名称 */
public static void compare( String newDirectory, String oldDirectory, String projectName ) {
final String newDir = dealDirectoryLastChar(newDirectory);
final String oldDir = dealDirectoryLastChar(oldDirectory);
// 按projectName在newDir同级建立一个新的目录
final String projectDir = createProjectDirectory(newDir, projectName);
StringBuilder command = new StringBuilder();
System.out.println("开始比较:++++++++++++++++++++++++++++++++++" + System.currentTimeMillis());
// 第一遍循环,把在new中与old中不同的文件的提取出来
getFiles(newDir, new Call() {
@Override
public void call( Object... objects ) {
if(objects[0] instanceof File) {
File newFile = (File) objects[0];
String oldPath = newFile.getAbsolutePath().replace(newDir, oldDir);
File oldFile = new File(oldPath);
// 如果存在,则比较两个文件的MD5是否一样,不一样,复制并覆盖旧文件的
if(oldFile.exists()) {
try {
String newMd5 = MD5Util.getFileMD5String(newFile);
String oldMd5 = MD5Util.getFileMD5String(oldFile);
if(!newMd5.equals(oldMd5)) {
System.out.println("copy and cover new File to : " + oldPath);
copyFile(newFile, newFile.getAbsolutePath().replace(newDir, projectDir));
// linux下cp命令如果复制的是相同的文件,可能无法覆盖,所以此处使用先删除再复制的命令
command.append("rm -f ../" + projectName + oldPath.replace(oldDir, "") + "\n");
command.append("cp -f " + oldPath.replace(oldDir + "\\", "") + " ../" + projectName
+ oldPath.replace(oldDir, "") + "\n");
}
}
catch(Exception e) {
System.err.println("生成MD5时出错!");
e.printStackTrace();
}
}
else {
System.out.println("add new File to : " + oldPath);
copyFile(newFile, newFile.getAbsolutePath().replace(newDir, projectDir));
command.append("cp -f " + oldPath.replace(oldDir + "\\", "") + " ../" + projectName
+ oldPath.replace(oldDir, "") + "\n");
}
}
}
});
// 第二遍循环,把在old中不在new中的文件提取出来,这部分说明是要删除的文件
getFiles(oldDir, new Call() {
@Override
public void call( Object... objects ) {
if(objects[0] instanceof File) {
File oldFile = (File) objects[0];
String newPath = oldFile.getAbsolutePath().replace(oldDir, newDir);
File newFile = new File(newPath);
// 如果新文件不存在,则删除旧文件
if(!newFile.exists()) {
System.out.println("delete old File from : " + oldFile.getAbsolutePath());
command.append("rm -f ../" + projectName + newPath.replace(newDir, "") + "\n");
}
}
}
});
System.out.println("结束比较:++++++++++++++++++++++++++++++++++" + System.currentTimeMillis());
System.out.println("生成的shell命令如下:");
System.out.println(command.toString().replace("\\", "/"));
createCommandFile(projectDir, command.toString().replace("\\", "/"));
}
private static void createCommandFile( String dir, String command ) {
File file = new File(dir + "\\command.sh");
try {
file.createNewFile();
FileOutputStream output = new FileOutputStream(file);
output.write(command.getBytes());
output.close();
}
catch(IOException e) {
System.err.println("创建command文件时出错:" + file.getAbsolutePath());
e.printStackTrace();
}
}
private static String createProjectDirectory( String newDir, String projectName ) {
File file = new File(newDir);
String projectDirectory = file.getParent() + "\\" + projectName + "_tmp";
File projectFile = new File(projectDirectory);
if(!projectFile.exists() || !projectFile.isDirectory()) {
projectFile.mkdir();
}
else {
boolean delete = deleteDirectory(projectFile);
if(delete) {
projectFile.mkdir();
}
else {
System.err.println("已存在目录" + projectDirectory + "且删除失败!");
}
}
return projectDirectory;
}
private static boolean deleteDirectory( File dir ) {
if(dir.isDirectory()) {
String[] children = dir.list();
// 递归删除目录中的子目录下
for( int i = 0; i < children.length; i++ ) {
boolean success = deleteDirectory(new File(dir, children[i]));
if(!success) {
return false;
}
}
}
// 目录此时为空,可以删除
return dir.delete();
}
private static void copyFile( File srcFile, String desFilePath ) {
File desFile = new File(desFilePath);
File parentFile = new File(desFile.getParent());
if(!parentFile.exists()) {
parentFile.mkdirs();
}
try {
desFile.createNewFile();
}
catch(IOException e) {
System.err.println("创建目标文件失败:" + desFilePath);
e.printStackTrace();
}
writeFile(srcFile, desFile);
}
private static void writeFile( File srcFile, File desFile ) {
FileInputStream input = null;
FileOutputStream output = null;
FileChannel in = null;
FileChannel out = null;
try {
input = new FileInputStream(srcFile);
output = new FileOutputStream(desFile);
in = input.getChannel();
out = output.getChannel();
in.transferTo(0, in.size(), out);
}
catch(Exception e) {
System.err.println("写文件时出错:" + desFile.getAbsolutePath());
e.printStackTrace();
}
finally {
try {
input.close();
output.close();
in.close();
out.close();
}
catch(IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private static void getFiles( String filePath, Call call ) {
filePath = dealDirectoryLastChar(filePath);
File root = new File(filePath);
File[] files = root.listFiles();
for( File file : files ) {
if(file.isDirectory()) {
getFiles(file.getAbsolutePath(), call);
}
else {
if(call != null) {
call.call(file);
}
}
}
}
private static String dealDirectoryLastChar( String directory ) {
if(directory.endsWith("\\")) {
return directory.substring(0, directory.length() - 1);
}
return directory;
}
public static void main( String[] args ) {
compare("E:\\test\\newWar\\", "E:\\test\\oldWar");
// getFiles("E:/data", new Call() {
// @Override
// public void call( Object... objects ) {
// if(objects[0] instanceof File) {
// System.out.println(( (File) objects[0] ).getAbsolutePath());
// }
// }
// });
}
}
interface Call {
void call( Object... objects );
}
基于以上程序,需要先在E:\test目录下新建newWar和oldWar两个目录,并添加一些文件,也可以修改main方法中compare的两个路径参数,运行结果如下:
开始比较:++++++++++++++++++++++++++++++++++1460538009097
add new File to : E:\test\oldWar\logs\b.vsdx
copy and cover new File to : E:\test\oldWar\logs\fcuh-mall\fcuh-mall-20160201-0.log
copy and cover new File to : E:\test\oldWar\logs\fcuh-mall\fcuh-mall.log
copy and cover new File to : E:\test\oldWar\logs\fcuh-user\fcuh-user.log
copy and cover new File to : E:\test\oldWar\logs\fcuh-wechat\fcuh-wechat.log
delete old File from : E:\test\oldWar\b.jnt
结束比较:++++++++++++++++++++++++++++++++++1460538010029
生成的shell命令如下:
cp -f logs/b.vsdx ../oldWar/logs/b.vsdx
rm -f ../oldWar/logs/fcuh-mall/fcuh-mall-20160201-0.log
cp -f logs/fcuh-mall/fcuh-mall-20160201-0.log ../oldWar/logs/fcuh-mall/fcuh-mall-20160201-0.log
rm -f ../oldWar/logs/fcuh-mall/fcuh-mall.log
cp -f logs/fcuh-mall/fcuh-mall.log ../oldWar/logs/fcuh-mall/fcuh-mall.log
rm -f ../oldWar/logs/fcuh-user/fcuh-user.log
cp -f logs/fcuh-user/fcuh-user.log ../oldWar/logs/fcuh-user/fcuh-user.log
rm -f ../oldWar/logs/fcuh-wechat/fcuh-wechat.log
cp -f logs/fcuh-wechat/fcuh-wechat.log ../oldWar/logs/fcuh-wechat/fcuh-wechat.log
rm -f ../oldWar/b.jnt
注:代码中生成的shell脚本中的复制并覆盖使用的是先rm再cp,因为部分linux系统中cp是cp -i的别名,使用cp不一定覆盖的了原文件,为保险起见,先移除再复制。