提供一个JAVA过滤HTML代码和截取字符串的类（包括测试用例）
package com.aodun.puhbs.blogging;
import java.util.regex.Pattern;
public class FunctionUtil {
public static void main(String[] args) {
String str = "<p><font size=\"2\"><span style=\" mce_style=\"font-size: 10.5pt\">"
+ "依据绩abc效管理体系的规定，公司决定于</span><span style=\" mce_style=\"font-size: 10.5pt\">"
+ "2008</span><span style=\" mce_style=\"font-size: 10.5pt\">年</span><span style=\" "
+ "mce_style=\"font-size: 10.5pt\">12</span><span style=\" mce_style=\"font-size: 10.5pt\">"
+ "月</span><span style=\" mce_style=\"font-size: 10.5pt\">22</span><span style=\" "
+ "mce_style=\"font-size: 10.5pt\">日</span><span style=\" mce_style=\"font-size: 10.5pt\">"
+ "\"-2009</span><span style=\" mce_style=\"font-size: 10.5pt\">年</span><span style=\" "
+ "mce_style=\"font-size: 10.5pt\">1</span><span style=\" mce_style=\"font-size: 10.5pt\">"
+ "月</span><span style=\" mce_style=\"font-size: 10.5pt\"> 23& </span><span style=\" "
+ "mce_style=\"font-size: 10.5pt\">日期间进行</span><span style=\" mce_style=\"font-size: "
+ "10.5pt\">2008</span><span style=\" mce_style=\"font-size: 10.5pt\">年年度绩效考评工作，"
+ "具体事项如下：</span></font></p>";
String str_text = Html2Text(str);
// System.out.println(str_text);
String slice = abbreviate(str_text, 100, "...");
System.out.println(slice);
}
/**
* @param str :
* source string
* @param width :
* string's byte width
* @param ellipsis :
* a string added to abbreviate string bottom
* @return String Object
*
*/
public static String abbreviate(String str, int width, String ellipsis) {
if (str == null || "".equals(str)) {
return "";
}
int d = 0; // byte length
int n = 0; // char length
for (; n < str.length(); n++) {
d = (int) str.charAt(n) > 256 ? d + 2 : d + 1;
if (d > width) {
break;
}
}
if (d > width) {
n = n - ellipsis.length() / 2;
return str.substring(0, n > 0 ? n : 0) + ellipsis;
}
return str = str.substring(0, n);
}
/**
* @param str :
* source string
* @param width :
* string's byte width
* @param ellipsis :
* a string added to abbreviate string bottom
* @return String Object
*
*/
public static String Html2Text(String inputString) {
String htmlStr = inputString; // 含html标签的字符串
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_html1;
java.util.regex.Matcher m_html1;
try {
String regEx_script = "<[\\s]*?script[^>]*?>[\\s\\S]*?<[\\s]*?\\/[\\s]*?script[\\s]*?>"; // 定义script的正则表达式{或<script[^>]*?>[\\s\\S]*?<\\/script>
// }
String regEx_style = "<[\\s]*?style[^>]*?>[\\s\\S]*?<[\\s]*?\\/[\\s]*?style[\\s]*?>"; // 定义style的正则表达式{或<style[^>]*?>[\\s\\S]*?<\\/style>
// }
String regEx_html = "<[^>]+>"; // 定义HTML标签的正则表达式
String regEx_html1 = "<[^>]+";
p_script = Pattern.compile(regEx_script, Pattern.CASE_INSENSITIVE);
m_script = p_script.matcher(htmlStr);
htmlStr = m_script.replaceAll(""); // 过滤script标签
p_style = Pattern.compile(regEx_style, Pattern.CASE_INSENSITIVE);
m_style = p_style.matcher(htmlStr);
htmlStr = m_style.replaceAll(""); // 过滤style标签
p_html = Pattern.compile(regEx_html, Pattern.CASE_INSENSITIVE);
m_html = p_html.matcher(htmlStr);
htmlStr = m_html.replaceAll(""); // 过滤html标签
p_html1 = Pattern.compile(regEx_html1, Pattern.CASE_INSENSITIVE);
m_html1 = p_html1.matcher(htmlStr);
htmlStr = m_html1.replaceAll(""); // 过滤html标签
textStr = htmlStr;
} catch (Exception e) {
System.err.println("Html2Text: " + e.getMessage());
}
return textStr;// 返回文本字符串
}
}