转：
@Test
public void test33() { String phoneString = "哈哈,13888889999"; // 提取数字 // 1 Pattern pattern = Pattern.compile("[^0-9]"); Matcher matcher = pattern.matcher(phoneString); String all = matcher.replaceAll(""); System.out.println("phone:" + all); // 2 Pattern.compile("[^0-9]").matcher(phoneString).replaceAll(""); }
@Test
public void test() { // 提取张三 去除数字 String r_name3 = "张三 13599998888 000000"; Pattern pattern = Pattern.compile("[\\d]"); Matcher matcher = pattern.matcher(r_name3); System.out.println(matcher.replaceAll("").trim()); }
需求：过滤除点号外的所有非数字:
String abc = "价格：0.00元";
Pattern compile = Pattern.compile("\\d+\\.\\d+"); Matcher matcher = compile.matcher(abc); matcher.find(); String string = matcher.group();//提取匹配到的结果 System.out.println(string);//0.00
需求：只要提取数字其它都不需要
String abc = "手机：1319999999";
System.out.println(abc.replaceAll("\\D", ""));//1319999999
需求：提取价格出来
package com.infomorrow.parser_datasource; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.junit.Test; public class test_money { @Test public void test(){ //0 //0.1 //24.13 String moneyString="1"; Double extract_cost = extract_cost_dot(moneyString); System.out.println("extract_cost:"+extract_cost); } /** * 提取金额,规则为只提取数字和点号,必须有点号 * 格式可以为0.0或者，11 * @param cost * @return */ public Double extract_cost_dot(String cost) { Pattern compile = Pattern.compile("(\\d+\\.\\d+)|(\\d+)"); Matcher matcher = compile.matcher(cost); matcher.find(); return Double.valueOf(matcher.group()); } }