Java SE之正则表达式Demo

@Test
	public void regex() {//匹配教务系统课程
//		String content = "公共机座 (1-10)".replaceAll(" ","");
		String content = "6A-411公共机房50座 (1-10)".replaceAll(" ","");//标准格式 //6A-411;1-10;50
//		String pattern = "^(\\d+)([a-zA-Z])-(\\d+)([\u2E80-\u9FFF]+)(\\d+)([\\u2E80-\\u9FFF]+)......";//原始完全匹配
		String pattern = "^(?<arg1>\\d+\\S+(-)(\\d+))([\u2E80-\u9FFF]+)(?<arg2>\\d+)([\\u2E80-\\u9FFF]+).(?<arg3>\\S+).";
		String [] items = content.split(pattern);
		StringBuilder temp = new StringBuilder();
		for(String item : items) { 
			temp.append(item);
		}
		System.out.println(temp);

		Matcher matcher = Pattern.compile(pattern).matcher(content);
        if(matcher.matches()){
        	System.out.println("arg1:" + matcher.group("arg1"));
        	System.out.println("arg2:" + matcher.group("arg2"));
        	System.out.println("arg3:" + matcher.group("arg3"));
        }
        System.out.println(content);
	}    

 

输出：

arg1:6A-411
arg2:50
arg3:1-10
6A-411公共机房50座(1-10)

 

正则的用途：匹配、搜索、替换、验证

1.要点1：[]用于仅能匹配一个字符

2.要点2：()用于固定某种字符串格式

3.要点3：中文utf8范围：[\u2E80-\u9FFF]

4.要点4：在正则表达式中设置参数断点格式：(?<argmentName>(regex1)(regex2)(regexN))