CSSスタイルに親ノードを追加するにはどうすればよいですか?

#div1{ color : red; }
改成
#div1{
    color:red;
}

package test.css;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import org.junit.Test;

/**
 * 给所有的css样式加上父节点
 * 
 * @author Van
 * @time 20150312
 */
public class ChangeCss {

	private static String tagName = "#footOuter ";
	private static String inPath = "D:\\workspaceluna\\GGBlog\\src\\main\\webapp\\resources\\plugins\\footer\\style.css";
	private static String outPath = "D:\\workspaceluna\\GGBlog\\src\\main\\webapp\\resources\\plugins\\footer\\style1.css";

	@Test
	public void cssTest() throws Exception{
		//输入
		BufferedReader in = new BufferedReader(new FileReader(inPath));
		//删除旧文件
		File file = new File(outPath);
		file.delete();
		//创建输出流
		FileWriter fw = new FileWriter(outPath);   

		int lineTotal = 0;
		String temp;

		while( (temp = in.readLine()) != null ){
			lineTotal++;
			StringBuilder sbder;
			//跳过空行
			if(isEmpty(temp)){
				continue;
			}
			//跳过@开头的行
			if(temp.contains("@")){
				fw.write(temp+"\r\n");
				continue;
			}
			//对有逗号和没有分号的行加标签
			if(temp.contains(",") && !temp.contains(";")){
				sbder = new StringBuilder();
				String _temp[] = temp.split(",");
				for(String _eveString : _temp){
					//加上父节点
					sbder.append( tagName + _eveString);
					if(_eveString.contains("{") || _eveString.contains("}"))
						continue;
					sbder.append(",");
				}
				fw.write(sbder+"\r\n");
				continue;
			}
			//对有花括号和逗号的行进行处理
			if(temp.contains("\\{")){
				if(temp.contains(",")){
					sbder = new StringBuilder();
					temp = temp.split("\\{")[0];
					String _temp[] = temp.split(",");
					for(int i=0;i<_temp.length;i++){
						//加上父节点
						sbder.append( tagName + _temp[i]);
						if(i==_temp.length-1) break;
						sbder.append(",");
					}
					sbder.append(temp.split("\\{")[1]);
					fw.write(sbder+"\r\n");
					continue;
				}
			}
			//对有花括号的行进行处理
			if(temp.contains("{")){
				sbder = new StringBuilder();
				sbder.append(tagName + temp);
				fw.write(sbder+"\r\n");
				continue;
			}
			fw.write(temp+"\r\n");
		}
		System.out.println(lineTotal);
		in.close();
		fw.close();
	}

	private boolean isEmpty(String value){
		if(value.isEmpty()) return true;
		if(value.matches("^\\s+$")) return true;
		return false;
	}
}