5月8日跨域问题总结

1.跨域

response.setHeader("Access-Control-Allow-Origin", request.getHeader("Origin"));
response.setHeader("Access-Control-Allow-Headers", "Origin, No-Cache, X-Requested-With, If-Modified-Since, Pragma, Last-Modified, Cache-Control, Expires, Content-Type, X-E4M-With,userId,token");
response.setHeader("Access-Control-Allow-Credentials", "true");

2.正则去掉所有css样式

public String regClass(String str){
     String reg = "([^\\s=]+)=(['\"\\s]?)([^'\"]+)\\2(?=\\s|$|>)";
     Pattern p = Pattern.compile(reg);
     Matcher matcher = p.matcher(str);
     return matcher.replaceAll("").replaceAll(" ", "");
}