[Java]去除html中的标签或者元素属性（正则表达式）

后台的数据库中某个字段是富文本框输入的 带有Html的标签 ，去掉标签后返回给前台

1.去掉Html 标签的代码

　　//过滤html标签
    Pattern p_html = Pattern.compile(regEx_html, Pattern.CASE_INSENSITIVE);
    Matcher m_html = p_html.matcher(htmlStr);
    htmlStr = m_html.replaceAll("");

2.项目中使用：

@RequestMapping(value = "/details", method = RequestMethod.GET)
    @ResponseBody
    @ApiOperation(value = "详情页面", httpMethod = "GET", produces = "application/json")
    public AjaxResult details(@ApiParam(required = true, name="id", value="id") @RequestParam(required = true,value = "id")String id) {
        //定义HTML标签的正则表达式
        String regEx_html = "<[^>]+>";
        Pattern p_html = Pattern.compile(regEx_html, Pattern.CASE_INSENSITIVE);
        if (cn.cmodes.common.utils.StringUtils.isBlank(id)) {
            AjaxResult.error("id不能为空！");
        }
        Articleinformation articleinformation = articleinformationService.selectArticleinformationById(id);

        if (articleinformation == null) {
            Bookinformation bookinformation = bookinformationService.selectBookinformationById(id);

            if (bookinformation == null) {
                Mediaphoto mediaphoto = mediaphotoService.selectMediaphotoById(id);

                if (mediaphoto == null) {
                    Archaeological archaeological = archaeologicalService.selectArchaeologicalById(id);

                    if (archaeological == null) {
                        Scholar scholar = scholarService.selectScholarById(id);
                        if (scholar == null) {
                            Institution institution = institutionService.selectInstitutionById(id);
                            if (institution != null) {
                                return AjaxResult.success().put("result",institution);
                            } else {
                                return AjaxResult.error();
                            }
                        } else {
                            return AjaxResult.success().put("result",scholar);
                        }
                    } else {
                      //  archaeological.setContents(HtmlUtils.htmlUnescape(archaeological.getContents()));

                        Matcher m_html = p_html.matcher(archaeological.getContents());
                        archaeological.setContents(m_html.replaceAll(""));
                        return AjaxResult.success().put("result",archaeological);
                    }
                } else {
                 //   mediaphoto.setSunmmaryContents(HtmlUtils.htmlUnescape(mediaphoto.getSunmmaryContents()));
                    Matcher m_html = p_html.matcher(mediaphoto.getSunmmaryContents());
                    mediaphoto.setSunmmaryContents(m_html.replaceAll(""));
                    return AjaxResult.success().put("result",mediaphoto);
                }
            } else {
              //  bookinformation.setContent(HtmlUtils.htmlUnescape(bookinformation.getContent()));
                Matcher m_html = p_html.matcher(bookinformation.getContent());
                bookinformation.setContent(m_html.replaceAll(""));
                return AjaxResult.success().put("result",bookinformation);
            }
        } else {
          //  articleinformation.setSummaryContents(HtmlUtils.htmlUnescape(articleinformation.getSummaryContents()));
            Matcher m_html = p_html.matcher(articleinformation.getSummaryContents());
            articleinformation.setSummaryContents(m_html.replaceAll(""));
            return AjaxResult.success().put("result",articleinformation);
        }
    }

3.去掉后的数据： 就是不带html 标签的数据

数据库中数据：
<p>xvcb<span style="text-decoration: underline; font-size: 24px;"><em><strong>cxvbxcbxc<span style="text-decoration: underline; font-size: 24px; font-family: impact, chicago;">bvcbxdsfsdf s</span>fsdgdsfgsdgfds</strong></em></span></p><p><span style="text-decoration: underline; font-size: 24px; background-color: rgb(255, 255, 0);"><em><strong>dfsfsgdfgsdf<span style="text-decoration: underline; font-size: 24px; background-color: rgb(255, 255, 0); font-family: impact, chicago;"></span></strong></em></span></p>

去掉后的数据：
"xvcbcxvbxcbxcbvcbxdsfsdf sfsdgdsfgsdgfdsdfsfsgdfgsdf"

4. perfect