java 從html中提取圖片地址鏈接

使用正則表達式：

1、先提取src到最近一個雙引號(也可以是單引號)

2、提取http到最近一個圖片格式

注意，提取的時候會包括末尾匹配！

方法：

    private  List<String> getIMG(String detail) {
        String regex = "src=\"(.*?)\"";;
        List<String> list = new ArrayList<>();

        Pattern pa = Pattern.compile(regex, Pattern.DOTALL);
        Matcher ma = pa.matcher(detail);
        while (ma.find())
        {
            String src = ma.group();
            String regex1 = "http(.*?)(.jpg|.png)";
            Pattern pa1 = Pattern.compile(regex1, Pattern.DOTALL);
            Matcher ma1 = pa1.matcher(src);
            while (ma1.find())
            {
                list.add(ma1.group());
            }
        }
        for(String str : list){
            log.info("解析後圖片:" + str);
        }
        return list;
    }

html示例：

<p style="text-align:center;"><img src="http://haitao.nos.netease.com/7d4278ff684845568b7c60d42c33d7cf1555558034978jum339k210560.jpg?imageView&amp;quality=98&amp;crop=0_13500_750_500" /></p> 
<p style="text-align:center;"><img src="http://haitao.nos.netease.com/b4c188cd362f407b88eb9ee85fac0be51572419265474k2cxty9u12781.jpg?imageView&amp;quality=98&amp;crop=0_0_750_161" /></p>
<p style="text-align:center;"><img src="http://haitao.nos.netease.com/38ff93e978f04bf2abc1240544fe02241572419265578k2cxtycq12782.jpg?imageView&amp;quality=98&amp;crop=0_0_750_500" /></p>
<p style="text-align:center;"><img src="http://haitao.nos.netease.com/38ff93e978f04bf2abc1240544fe02241572419265578k2cxtycq12782.jpg?imageView&amp;quality=98&amp;crop=0_500_750_267" /></p>

解析後

http://haitao.nos.netease.com/7d4278ff684845568b7c60d42c33d7cf1555558034978jum339k210560.jpg
http://haitao.nos.netease.com/b4c188cd362f407b88eb9ee85fac0be51572419265474k2cxty9u12781.jpg
http://haitao.nos.netease.com/38ff93e978f04bf2abc1240544fe02241572419265578k2cxtycq12782.jpg
http://haitao.nos.netease.com/38ff93e978f04bf2abc1240544fe02241572419265578k2cxtycq12782.jpg