java 对于url地址的实体符号的处理

<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.4</version>
        </dependency>
-->public static String getNextPage(String web) throws Exception {
        HttpComponentsClientHttpRequestFactory factory=new HttpComponentsClientHttpRequestFactory();
//        factory.setConnectTimeout(60000);
//        factory.set
        String regx="上一页</a>）（<a.*?href=[\\\"']?(((http|https)?://)?/?[^\\\"']+)[\\\"']?.*?>(.+)</a>";
        RestTemplate template=new RestTemplate();
        URI uri=new URI(URLDecoder.decode(web,"utf-8"));
        String stri = template.getForObject(uri, String.class);
        Pattern pattern=Pattern.compile(regx);
        Matcher matcher = pattern.matcher(stri);
        matcher.find();
        String group = matcher.group();
        group = group.substring(group.indexOf("href=\"/") + 7, group.indexOf("\" title=\""));
        group="http://www.youbianku.com/"+group;
        group= StringEscapeUtils.unescapeHtml4(group);
        return group;    }