java 截取 <img src="/Libs/ueditor/net/upload/image/20190417/6369110621294028866831505.png" title="blob.png" alt="blob.png"/> 中src的数据

可以使用正则表达式或者字符串处理的方式来截取。具体代码可以参考以下示例：

使用正则表达式截取：

String str = "<img src=\"/Libs/ueditor/net/upload/image/20190417/6369110621294028866831505.png\" title=\"blob.png\" alt=\"blob.png\"/>";
Pattern pattern = Pattern.compile("<img[^>]+src\\s*=\\s*['\"]([^'\"]+)['\"][^>]*>");
Matcher matcher = pattern.matcher(str);
if (matcher.find()) {
    String src = matcher.group(1);
    System.out.println(src);
}

使用字符串处理的方式截取：

String str = "<img src=\"/Libs/ueditor/net/upload/image/20190417/6369110621294028866831505.png\" title=\"blob.png\" alt=\"blob.png\"/>";
String start = "src=\"";
String end = "\"";
int startIndex = str.indexOf(start) + start.length();
int endIndex = str.indexOf(end, startIndex);
String src = str.substring(startIndex, endIndex);
System.out.println(src);

以上代码输出结果都是：

/Libs/ueditor/net/upload/image/20190417/6369110621294028866831505.png