java正則表示式去除html中所有的標籤和特殊HTML字元
阿新 • • 發佈：2018-11-06
關於java正則表示式去除html中所有的標籤和特殊HTML字元，結合我所做的專案總結的經驗：
總共分為三種：第一種適用於適用短的文章，將文章用正則表示式的方式拼接到程式碼中，有些繁瑣，其實不太實用。第二種就是直接將文件引入，進行更改，但是有一個小缺點，就是文件中的格式可能是utf-8格式的，需要更改成gbk格式的。第三種則是在程式碼中自動更改格式。由於是初學者，有很多不足，歡迎大家來補充。下面我分別給大家分享一下吧。
第一種：用於短資料，繁瑣一些。
package day0703; import java.util.regex.Matcher; import java.util.regex.Pattern; public class HtmlUtil { private static final String regEx_script = "<script[^>]*?>[\\s\\S]*?<\\script>"; // 定義script的正則表示式 private static final String regEx_style = "<style [^>]*?>[\\s\\S]*?<\\/style >"; // 定義style的正則表示式 private static final String regEx_html = "<[^>]+>"; // 定義HTML標籤的正則表示式 private static final String regEx_space = "\\s*|\t|\r|\n";//定義空格回車換行符 private static final String regEx_special = "\\&[a-zA-Z]{1,10};";//定義特殊字元的正則表示式,如 /** * @param htmlStr * @return * 刪除Html標籤 * 用於短的資料，直接將文件複製貼上，寫入，但是每一個引號之前需要加“\”轉義符，用起來不方便 */ public static String delHTMLTag(String htmlStr) { Pattern p_script = Pattern.compile(regEx_script, Pattern.CASE_INSENSITIVE); Matcher m_script = p_script.matcher(htmlStr); htmlStr = m_script.replaceAll(""); // 過濾script標籤 Pattern p_style = Pattern.compile(regEx_style, Pattern.CASE_INSENSITIVE); Matcher m_style = p_style.matcher(htmlStr); htmlStr = m_style.replaceAll(""); // 過濾style標籤 Pattern p_html = Pattern.compile(regEx_html, Pattern.CASE_INSENSITIVE); Matcher m_html = p_html.matcher(htmlStr); htmlStr = m_html.replaceAll(""); // 過濾html標籤 Pattern p_space = Pattern.compile(regEx_space, Pattern.CASE_INSENSITIVE); Matcher m_space = p_space.matcher(htmlStr); htmlStr = m_space.replaceAll(""); // 過濾空格回車標籤 Pattern p_special = Pattern.compile(regEx_special, Pattern.CASE_INSENSITIVE); Matcher m_special = p_special.matcher(htmlStr); htmlStr = m_special.replaceAll(""); // 過濾特殊標籤 return htmlStr.trim(); // 返回文字字串 } public static String getTextFromHtml(String htmlStr){ htmlStr = delHTMLTag(htmlStr); htmlStr = htmlStr.replaceAll(" ", ""); return htmlStr; } public static void main(String[] args) { String str = "<P> </P>" + "<P class=MsoNormal style=\"LAYOUT-GRID-MODE: char; MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-INDENT: 24pt; mso-layout-grid-align: none\"><SPAN lang=EN-US style=\"FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'; LINE-HEIGHT: 150%\">2014</SPAN><SPAN style=\"FONT-SIZE: 12pt; FONT-FAMILY: 宋體; LINE-HEIGHT: 150%; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-font-family: 宋體; mso-fareast-theme-font: minor-fareast; mso-bidi-font-family: 'Times New Roman'\">年</SPAN><SPAN lang=EN-US style=\"FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'; LINE-HEIGHT: 150%\">12</SPAN><SPAN style=\"FONT-SIZE: 12pt; FONT-FAMILY: 宋體; LINE-HEIGHT: 150%; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-font-family: 宋體; mso-fareast-theme-font: minor-fareast; mso-bidi-font-family: 'Times New Roman'\">月</SPAN><SPAN lang=EN-US style=\"FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'; LINE-HEIGHT: 150%\">30</SPAN><SPAN style=\"FONT-SIZE: 12pt; FONT-FAMILY: 宋體; LINE-HEIGHT: 150%; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-font-family: 宋體; mso-fareast-theme-font: minor-fareast; mso-bidi-font-family: 'Times New Roman'\">日，有訊息稱，某國家</SPAN><SPAN lang=EN-US style=\"FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'; LINE-HEIGHT: 150%\">2015</SPAN><SPAN style=\"FONT-SIZE: 12pt; FONT-FAMILY: 宋體; LINE-HEIGHT: 150%; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-font-family: 宋體; mso-fareast-theme-font: minor-fareast; mso-bidi-font-family: 'Times New Roman'\">年的工作重點將放在改革問題上，如兩個關鍵的清單（</SPAN><SPAN lang=EN-US style=\"FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'; LINE-HEIGHT: 150%\">USML</SPAN><SPAN style=\"FONT-SIZE: 12pt; FONT-FAMILY: 宋體; LINE-HEIGHT: 150%; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-font-family: 宋體; mso-fareast-theme-font: minor-fareast; mso-bidi-font-family: 'Times New Roman'\">）的修訂，以及上傳到雲伺服器的控制問題。</SPAN><SPAN lang=EN-US style=\"FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'; LINE-HEIGHT: 150%\"><?xml:namespace prefix =\"o\" ns = \"urn:schemas-microsoft-com:office:office\" /><o:p></o:p></SPAN></P>" + "<P class=MsoNormal style=\"LAYOUT-GRID-MODE: char; MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-INDENT: 24pt; mso-layout-grid-align: none\"><SPAN style=\"FONT-SIZE: 12pt; FONT-FAMILY: 宋體; LINE-HEIGHT: 150%; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-font-family: 宋體; mso-fareast-theme-font: minor-fareast; mso-bidi-font-family: 'Times New Roman'\">責</SPAN><SPAN style=\"FONT-SIZE: 12pt; FONT-FAMILY: 宋體; LINE-HEIGHT: 150%; mso-fareast-font-family: 宋體; mso-fareast-theme-font: minor-fareast; mso-bidi-font-family: 'Times New Roman'; mso-ascii-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast\">·</SPAN><SPAN style=\"FONT-SIZE: 12pt; FONT-FAMILY: 宋體; LINE-HEIGHT: 150%; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-font-family: 宋體; mso-fareast-theme-font: minor-fareast; mso-bidi-font-family: 'Times New Roman'\">沃爾夫指出，固定（</SPAN><SPAN lang=EN-US style=\"FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'; LINE-HEIGHT: 150%\">EAR</SPAN><SPAN style=\"FONT-SIZE: 12pt; FONT-FAMILY: 宋體; LINE-HEIGHT: 150%; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-font-family: 宋體; mso-fareast-theme-font: minor-fareast; mso-bidi-font-family: 'Times New Roman'\">）和小名（</SPAN><SPAN lang=EN-US style=\"FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'; LINE-HEIGHT: 150%\">ITAR</SPAN><SPAN style=\"FONT-SIZE: 12pt; FONT-FAMILY: 宋體; LINE-HEIGHT: 150%; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-font-family: 宋體; mso-fareast-theme-font: minor-fareast; mso-bidi-font-family: 'Times New Roman'\">）中關鍵術語的界定，該結果將於</SPAN><SPAN lang=EN-US style=\"FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'; LINE-HEIGHT: 150%\">2015</SPAN><SPAN style=\"FONT-SIZE: 12pt; FONT-FAMILY: 宋體; LINE-HEIGHT: 150%; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-font-family: 宋體; mso-fareast-theme-font: minor-fareast; mso-bidi-font-family: 'Times New Roman'\">年初發布。同時，我也指出，目前，管理機構尚未解決加密標準的問題。這就涉及對“出口”一詞的界定，其中的一個元素就是“以某種方式”加密的控制資訊將不構成以雲端計算為目的的出口。而除了“出口”。例如，“基礎研究”是與管理出口規則緊密聯絡的。</SPAN><SPAN lang=EN-US style=\"FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'; LINE-HEIGHT: 150%\"><o:p></o:p></SPAN></P>" + "<P class=MsoNormal style=\"LAYOUT-GRID-MODE: char; TEXT-ALIGN: right; MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-INDENT: 24pt; mso-layout-grid-align: none\" align=right><SPAN style=\"FONT-SIZE: 12pt; FONT-FAMILY: 宋體; LINE-HEIGHT: 150%; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-font-family: 宋體; mso-fareast-theme-font: minor-fareast; mso-bidi-font-family: 'Times New Roman'\">（李</SPAN><SPAN lang=EN-US style=\"FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'; LINE-HEIGHT: 150%\"><SPAN style=\"mso-spacerun: yes\"> </SPAN></SPAN><SPAN style=\"FONT-SIZE: 12pt; FONT-FAMILY: 宋體; LINE-HEIGHT: 150%; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-fareast-font-family: 宋體; mso-fareast-theme-font: minor-fareast; mso-bidi-font-family: 'Times New Roman'\">明編譯）</SPAN><SPAN lang=EN-US style=\"FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'; LINE-HEIGHT: 150%\"><o:p></o:p></SPAN></P>" + "<P> </P>"; System.out.println(getTextFromHtml(str)); } }
第二種：用於引入整個文件。（其中我的文件路徑為"D:/content.txt“，文件名稱為content.txt。
package day0703; import java.io.BufferedReader; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import java.util.regex.Pattern; public class success { /** * 刪除Html標籤 * 將utf-8的文件手動改成gbk的，然後進行篩選輸出，用於多資料 * @param inputString * @return */ public static String removeHtmlTag(String inputString) { if (inputString == null) return null; String htmlStr = inputString; // 含html標籤的字串 String textStr = ""; java.util.regex.Pattern p_script; java.util.regex.Matcher m_script; java.util.regex.Pattern p_style; java.util.regex.Matcher m_style; java.util.regex.Pattern p_html; java.util.regex.Matcher m_html; java.util.regex.Pattern p_special; java.util.regex.Matcher m_special; try { // 定義script的正則表示式{或<script[^>]*?>[\\s\\S]*?<\\/script> String regEx_script = "<[\\s]*?script[^>]*?>[\\s\\S]*?<[\\s]*?\\/[\\s]*?script[\\s]*?>"; // 定義style的正則表示式{或<style[^>]*?>[\\s\\S]*?<\\/style> String regEx_style = "<[\\s]*?style[^>]*?>[\\s\\S]*?<[\\s]*?\\/[\\s]*?style[\\s]*?>"; // 定義HTML標籤的正則表示式 String regEx_html = "<[^>]+>"; // 定義一些特殊字元的正則表示式 如： String regEx_special = "\\&[a-zA-Z]{1,10};"; p_script = Pattern.compile(regEx_script, Pattern.CASE_INSENSITIVE); m_script = p_script.matcher(htmlStr); htmlStr = m_script.replaceAll(""); // 過濾script標籤 p_style = Pattern.compile(regEx_style, Pattern.CASE_INSENSITIVE); m_style = p_style.matcher(htmlStr); htmlStr = m_style.replaceAll(""); // 過濾style標籤 p_html = Pattern.compile(regEx_html, Pattern.CASE_INSENSITIVE); m_html = p_html.matcher(htmlStr); htmlStr = m_html.replaceAll(""); // 過濾html標籤 p_special = Pattern .compile(regEx_special, Pattern.CASE_INSENSITIVE); m_special = p_special.matcher(htmlStr); htmlStr = m_special.replaceAll(""); // 過濾特殊標籤 textStr = htmlStr; } catch (Exception e) { e.printStackTrace(); } return textStr;// 返回文字字串 } /** * 測試用的main函式 * @param args */ public static void main(String[] args) { StringBuffer sb = new StringBuffer(); try { FileReader fr = new FileReader("D:/content.txt"); BufferedReader br = new BufferedReader(fr); String s = ""; while((s = br.readLine())!=null){ sb.append(s); } } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } String ssss = ReduceHtml2Text.removeHtmlTag(sb.toString()); System.out.println(ssss); } }
第三種：在程式碼中自動更改格式。直接
package day0703; import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.util.regex.Pattern; public class ReduceHtml2Text { /** * 刪除Html標籤 * 將utf-8的檔案直接轉成gbk輸出，用於多資料 * @param inputString * @return */ public static String removeHtmlTag(String inputString) { if (inputString == null) return null; String htmlStr = inputString; // 含html標籤的字串 String textStr = ""; java.util.regex.Pattern p_script; java.util.regex.Matcher m_script; java.util.regex.Pattern p_style; java.util.regex.Matcher m_style; java.util.regex.Pattern p_html; java.util.regex.Matcher m_html; java.util.regex.Pattern p_special; java.util.regex.Matcher m_special; try { // 定義script的正則表示式{或<script[^>]*?>[\\s\\S]*?<\\/script> String regEx_script = "<[\\s]*?script[^>]*?>[\\s\\S]*?<[\\s]*?\\/[\\s]*?script[\\s]*?>"; // 定義style的正則表示式{或<style[^>]*?>[\\s\\S]*?<\\/style> String regEx_style = "<[\\s]*?style[^>]*?>[\\s\\S]*?<[\\s]*?\\/[\\s]*?style[\\s]*?>"; // 定義HTML標籤的正則表示式 String regEx_html = "<[^>]+>"; // 定義一些特殊字元的正則表示式 如： String regEx_special = "\\&[a-zA-Z]{1,10};"; p_script = Pattern.compile(regEx_script, Pattern.CASE_INSENSITIVE); m_script = p_script.matcher(htmlStr); htmlStr = m_script.replaceAll(""); // 過濾script標籤 p_style = Pattern.compile(regEx_style, Pattern.CASE_INSENSITIVE); m_style = p_style.matcher(htmlStr); htmlStr = m_style.replaceAll(""); // 過濾style標籤 p_html = Pattern.compile(regEx_html, Pattern.CASE_INSENSITIVE); m_html = p_html.matcher(htmlStr); htmlStr = m_html.replaceAll(""); // 過濾html標籤 p_special = Pattern .compile(regEx_special, Pattern.CASE_INSENSITIVE); m_special = p_special.matcher(htmlStr); htmlStr = m_special.replaceAll(""); // 過濾特殊標籤 textStr = htmlStr; } catch (Exception e) { e.printStackTrace(); } return textStr;// 返回文字字串 } /** * 測試用的main函式 * * @param args */ public static void main(String[] args) { StringBuffer sb = new StringBuffer(); try { File fr = new File("D:/content.txt"); BufferedReader br = new BufferedReader(new InputStreamReader( new FileInputStream(fr), "UTF-8")); String s = ""; while ((s = br.readLine()) != null) { sb.append(s); String str2 = new String(s.getBytes("GBK"), "GBK"); } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } String asc= ReduceHtml2Text.removeHtmlTag(sb.toString()); System.out.println(asc); } }