Java处理图片地址，超链接地址替换正则表达式写法

 public static  String getSrc(String mm){
	       	String img = mm.replaceAll("[\\s\\p{Zs}]+", "");
	       	System.out.println("ret=="+img);
	       	int n = img.indexOf("src=\"");
	       	String ret ="";
	       	if(n!=-1){
	       	  String strsub = img.substring(n+5);
	       	  int m =strsub.indexOf("\"");
	       	  if(m!=-1){
	       		  ret=strsub.substring(0, m);
	       	  } else {
	       		  System.out.println("ret=="+img);
	       	  }
	       	}
	   		return ret;
	       }
	
	
	public static  String chuliContent(String content) {

    	Pattern paa = Pattern.compile("<img.*?>",
				Pattern.DOTALL);
    	String cc =content;
        Matcher maa = paa.matcher(content);
		while (maa.find()) {
			System.out.println("img 匹配"+content);
			String gg = maa.group();
			String imgsrc=getSrc(gg);
			if (!imgsrc.equals("")&&imgsrc!=null) {
//				if (imgsrc.contains("[InstallDir_ChannelDir]{$UploadDir}")) {
					cc = content.replace(imgsrc, IMG_URL + imgsrc);
					content =cc;
				}
//			}
		}
		
		paa = Pattern.compile("<IMG.*?>",
				Pattern.DOTALL);
		maa = paa.matcher(content);
		while (maa.find()) {
			String gg = maa.group();
			String imgsrc=getSrc(gg);
			if (!imgsrc.equals("")&&imgsrc!=null) {
//				if (imgsrc.contains("[InstallDir_ChannelDir]{$UploadDir}")) {
					cc = content.replace(imgsrc, IMG_URL +  imgsrc);
					content =cc;
//				}
			}
		}
		
		
    	paa = Pattern.compile("<A[^>]*>.*?</A>",
				Pattern.DOTALL);
    	cc =content;
        maa = paa.matcher(content);
		while (maa.find()) {
			String gg = maa.group();
			String ahref=getHref(gg);
			if (!ahref.equals("")&&ahref!=null) {
//				if (ahref.contains("[InstallDir_ChannelDir]{$UploadDir}")) {
					cc = content.replace(ahref, IMG_URL +  ahref);
					content =cc;
//				}
			}
		}	
		
		paa = Pattern.compile("<a[^>]*>.*?</a>",
				Pattern.DOTALL);
    	cc =content;
        maa = paa.matcher(content);
		while (maa.find()) {
			String gg = maa.group();
			String ahref=getHref(gg);
			if (!ahref.equals("")&&ahref!=null) {
//				if (ahref.contains("[InstallDir_ChannelDir]{$UploadDir}")) {
					cc = content.replace(ahref, IMG_URL +  ahref);
					content =cc;
				}
//			}
		}
		return cc;
    }
	
	 public static  String getHref(String mm){
	    	String img = mm.replaceAll("[\\s\\p{Zs}]+", "");
	    	int n = img.indexOf("href=\"");
	    	String ret ="";
	    	if(n!=-1){
	    	  String strsub = img.substring(n+6);
	    	  int m =strsub.indexOf("\"");
	    	  if(m!=-1){
	    		  ret=strsub.substring(0, m);
	    	  }
	    	}
			return ret;
	    }