//一个jar包可以包含多个entry，这样就能实现下面功能
1.I/O 读文件流步骤
File file=new File(filePath);
InputStreamReader read = new InputStreamReader(new FileInputStream(file));
BufferedReader bufferedReader = new BufferedReader(read);
String lineTxt = bufferedReader.readLine()
package PlayJar;
/**
* 读取txt文件里的路径文件
* @author gjf
*/
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
public class ReadFile{
public static List<String> readTxtFile(){
String filePath = "E:/Jar/prpall.txt";
List<String> list = new ArrayList<String>();
try {
File file=new File(filePath);
if(file.isFile() && file.exists()){ //判断文件是否存在
InputStreamReader read = new InputStreamReader(new FileInputStream(file));
BufferedReader bufferedReader = new BufferedReader(read);
String lineTxt = null;
while((lineTxt = bufferedReader.readLine()) != null){
list.add("E:/运维域/基线域04-B/prpall/modules/webapps/"+lineTxt);
}
System.out.println("list"+list);
read.close();
}else{
System.out.println("找不到指定的文件");
}
}catch(Exception e) {
System.out.println("读取文件内容出错");
e.printStackTrace();
}
return list;
}
}
package PlayJar;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.jar.JarEntry;
import java.util.jar.JarOutputStream;
/**
* 把单个txt里的路径文件打包
* @author pc
*/
public class PJar {
public static void main(String[] args) throws IOException {
FileInputStream fis = null;
JarOutputStream jos = null;
jos = new JarOutputStream(new FileOutputStream("E:/Jar/ppp.jar"));
for (String s : ReadFile.readTxtFile()) {
File file = new File(s);// 文件地址
fis = new FileInputStream(file);
// 创建压缩文件中的条目，subString是为了截距掉前面的路径
JarEntry enttry = new JarEntry(file.getPath().substring(38));
System.out.println("创建压缩文件中的条目 :" + enttry);
// 将创建好的条目加入到压缩文件中
jos.putNextEntry(enttry);
// 写入当前条目所对应的具体内容
byte[] buff = new byte[1024];
int len = 0;
while ((len = fis.read(buff)) != -1) {
jos.write(buff, 0, len);
}
}
fis.close();
jos.close();
}
}
