@Test
public void testH() throws IOException {
// String SRC = "FirstPage.html";
UrlCrawBoke urlCrawBoke = new UrlCrawBoke();
// 爬取网页写进txt
InputStream is2 = urlCrawBoke.doGet("https://read.qidian.com/chapter/6iURka0KqBEmPxgcqNL9uQ2/WnbHdZBKVH76ItTi_ILQ7A2");
String pageStr = urlCrawBoke.inputStreamToString(is2, "UTF-8");
System.out.println("pageStr==>"+pageStr);
is2.close();
FileWriter is1 = new FileWriter("C:\\Users\\Desktop\\before.txt");
is1.write(pageStr); // 可以用 write("666")
is1.close();
// 正则提取:从html中提取纯文本
String after = Html2Text(pageStr.toString());
FileWriter is = new FileWriter("C:\\Users\\Desktop\\after.txt");
is.write(after); // 可以用 write("666")
is.close();
System.out.println(after);
}
// 从html中提取纯文本
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;
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
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
textStr = htmlStr;
} catch (Exception e) {
System.err.println("Html2Text: " + e.getMessage());
}
// 剔除空格行
textStr = textStr.replaceAll("[ ]+", "");
textStr = textStr.replaceAll("1", "").replaceAll("2", "").replaceAll("3", "").replaceAll("4", "")
.replaceAll("5", "").replaceAll("6", "").replaceAll("7", "").replaceAll("8", "").replaceAll("9", "")
.replaceAll("0", "");
textStr = textStr.replaceAll("(?m)^\\s*$(\\n|\\r\\n)", "");
textStr = textStr.replaceAll("\t", "");
textStr = textStr.replaceAll(" ", "").replace(">", "").replace("—", "");// 还有什么 查一查
textStr = textStr.replaceAll("\\\\", "");// 正则表达式中匹配一个反斜杠要用四个反斜杠
textStr = textStr.replaceAll("\r\n", "");
textStr = textStr.replaceAll("\n", "");
return textStr;// 返回文本字符串
}
class UrlCrawBoke {
public InputStream doGet(String urlstr) throws IOException {
URL url = new URL(urlstr);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestProperty("User-Agent",
"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36");
InputStream inputStream = conn.getInputStream();
return inputStream;
}
public String inputStreamToString(InputStream is, String charset) throws IOException {
byte[] bytes = new byte[1024];
int byteLength = 0;
StringBuffer sb = new StringBuffer();
while ((byteLength = is.read(bytes)) != -1) {
sb.append(new String(bytes, 0, byteLength, charset));
}
return sb.toString();
}
}
爬起点
猜你喜欢
转载自blog.csdn.net/asd521a65sdf12/article/details/109449492
今日推荐
周排行