JAVA中正则的几种应用

纯属复习,直接上test类:

 

package com.test;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import junit.framework.TestCase;

public class TestPattern extends TestCase {

	@Override
	protected void setUp() throws Exception {
		super.setUp();
	}

	public void test_1() {
		Pattern pattern = Pattern.compile("(\\d{11})(\\d*)");
		Matcher matcher = pattern.matcher("a159612580111as138090738612ddd");
		// 打印全部符合的内容一共循环2次，该字符串有2个内容符合正则
		while (matcher.find()) {
			for (int i = 1; i <= matcher.groupCount(); i++)
				System.out.println(matcher.group(i));
		}

	}

	public void test_2() {
		Pattern pattern = Pattern.compile("(,)|(\\.)|(&)");
		Matcher matcher = pattern.matcher("我不知道,但是我详细you&me一定能成功.MUST!");
		StringBuffer sb = new StringBuffer();
		while (matcher.find()) {
			// 符合正则的符号全部替换成#
			matcher.appendReplacement(sb, "#");
		}
		// 补齐字符串其他部分
		matcher.appendTail(sb);
		System.out.println(sb.toString());

	}

	public void test_3() {
		String str = "http://192.168.3.11:50070/data/1_upload/a.rar";
		String str1 = "(http://.*/data/)(.*/)(.*)";
		Pattern p = Pattern.compile(str1);
		Matcher m = p.matcher(str);
		while (m.find()) {
			System.out.println(m.group(1));
			System.out.println(m.group(2));
			System.out.println(m.group(3));
		}
	}

}