a52071453 发表于 2013-2-3 10:24:12

使用Java正则表达式匹配出网页图片地址并替换掉

首先说明一下.我是做的邮件发送功能..~~ 图片已经上传到了 服务器, 现在的问题是,发送后的图片不能正常显示,路径不对.. 我是想用Java正则表达式匹配出上传的图片地址并替换掉
 
方法一:
public class TestImg2 {
    private String replaceImgSrc(String content,String replaceHttp){
         String result ="";
//       String patternStr="^.*<img\\s*.*\\s*src=\\\"(.*)\\\"\\s*.*>.*$";
//       String patternStr=".*?<img\\s*.*?\\s*src=\\\"(.*)\\\"\\s*.*?>.*";
//        String patternStr="^.*<img\\s*.*\\s*src=\\\"(.*?)\\\"\\s*.*>.*$";
//       String patternStr="<img(?:.*)src=(\"{1}|\'{1})([^\\[^>]+*)(\"{1}|\'{1})(?:.*)>";
//       String patternStr="<img.*src=(.*?)[^>]*?>src=\"?(.*?)(\"|>|\\s+)";
        
//       String patternStr="(?i)<img[^>]*?src=\"([])\"";
//       String patternStr = "<img\\s+[^>]*?src="((\\w+?:\\/\\/|/)[^"]*?)"[^>]*?>";
 //         String patternStr = "<img\\s+[^>]*?src=\"((\\w+?:?//|\\/|\\w*)[^\"]*?)\"[^>]*?>";
 String patternStr = "<img\\s+[^>]*?src=[\"|\']((\\w+?:?//|\\/|\\w*)[^\"]*?)[\"|\'][^>]*?>";
         Pattern pattern=Pattern.compile(patternStr);
         Matcher matcher = pattern.matcher(content);
          //如果匹配到了img
         System.out.println("matcher.matches() == "+matcher.matches());
         if(matcher.matches()){
           result=content.replaceAll(matcher.group(1),(replaceHttp+matcher.group(1)));
           System.out.println(" result == "+result);
         }else{
             result =content;
         }
         return result;
    }
public static void main(String[] args) {
       TestImg2 ss = new TestImg2();
       String content = "<p><img style=\"width:356px;height:163px;\" title=\"33\" alt=\"33\" src=\"/WorkStation/attached/20110802/20110802131500_758.gif\" width=\"33\" height=\"3\"</p><p><img style=\"width:356px;height:163px;\" title=\"33\" alt=\"33\" src=\"/WorkStation/attached/20110802/20110802131500_758.gif\" width=\"33\" height=\"33\" /></p><p> </p><p><img style=\"width:356px;height:163px;\" title=\"33\" alt=\"33\" src=\"/WorkStation/attached/20110802/20110802131500_758.gif\" width=\"33\" height=\"3\"</p><p><img style=\"width:356px;height:163px;\" title=\"33\" alt=\"33\" src=\"/WorkStation/attached/20110802/20110802131500_758.gif\" width=\"33\" height=\"33\" /></p><p> </p>";
//     String content = "<p><img title=\"33\" alt=\"33\" align=\"left\" src=\"/WorkStation/attached/20110802/20110802173151_741.gif\" width=\"33\" height=\"33\" /></p><p> </p><p> </p><p> <img title=\"32\" alt=\"32\" src=\"/WorkStation/attached/20110802/20110802173215_520.gif\" width=\"33\" height=\"33\" /></p>" ;
       ss.replaceImgSrc(content, "http://10.10.0.126:8088");
    }
}
 
 
 
 
 
方法二
public class TestImg {
    public static void main(String[] args) {
       String content = "<p><img style=\"width:356px;height:163px;\" title=\"33\" alt=\"33\" src=\"/WorkStation/attached/20110802/20110802131500_758.gif\" width=\"33\" height=\"3\"</p>";
//     String content = "<p><img style=\"width:356px;height:163px;\" title=\"33\" alt=\"33\" src=\"/WorkStation/attached/20110802/20110802131500_758.gif\" width=\"33\" height=\"3\"</p><p><img style=\"width:356px;height:163px;\" title=\"33\" alt=\"33\" src=\"/WorkStation/attached/20110802/20110802131500_758.gif\" width=\"33\" height=\"33\" /></p><p> </p><p><img style=\"width:356px;height:163px;\" title=\"33\" alt=\"33\" src=\"/WorkStation/attached/20110802/20110802131500_758.gif\" width=\"33\" height=\"3\"</p><p><img style=\"width:356px;height:163px;\" title=\"33\" alt=\"33\" src=\"/WorkStation/attached/20110802/20110802131500_758.gif\" width=\"33\" height=\"33\" /></p><p> </p>";
//     content = content.replaceAll("(.*)src=\"(.*)", "$1src=\"http://127.0.0.1:8088$2");
       content = content.replaceAll("(.*?)src=\"(.*?)", "$1src=\"http://127.0.0.1:8088$2");
//     String contents = content.replaceAll("(.*?)src=\"(.*?)", "$1src=\""+path+"$2");
 
       System.out.println(content);
      
//     String str = "<img src=\"/WorkStation/attached/20110729/2011072917.jpg\" width=\"333\" height=\"333\" /><img src=\"/WorkStation/attached/20110729/2011072916.jpg\" width=\"333\" height=\"333\" /><img src=\"/WorkStation/attached/20110729/2011072917.jpg\" width=\"333\" height=\"333\" />";
    }
}
 
    // 获取项目的基路径(用于拼接图片的全路径)
private String basePaths(){
       FacesContext context = FacesContext.getCurrentInstance();
       ExternalContext ec = context.getExternalContext();
       HttpServletRequest request = (HttpServletRequest) ec.getRequest();
      
       String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort();
       // System.out.println("request.getRequestURL() == "+request.getRequestURL());
       System.out.println("basePath == "+basePath);
       return basePath;
    }
 
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