Question

java字符串数组替换问题

String s="407298a";
String[] s1={"407298a"};
System.out.println(s.eqauls(s1[0]));
System.out.println(s1[0].replaceAll("a", ""));
System.out.println(s.replaceAll("a", ""));
运行结果
true
407298a
407298
为什么字符串数组s1[0]里面的a替换不掉呢 字符串数组的元素补还是字符串吗 而且s和s1[0]明明是相等的

Answer 1

@Test
public void TestReplace(){

String url = "www.asd.com/?userid={userid}&password={password}";
String[] values = {"123","321"};
String regex = "\\{[^\\{\\}]*\\}";
Pattern pt = Pattern.compile(regex);
Matcher match = pt.matcher(url);
int i = 0;
while(match.find()) {
String paramValue = match.group();
url = url.replaceAll(paramValue.replaceAll("\\{", "\\\\{").replaceAll("\\}", "\\\\}"), values[i]);
i++;
}
System.out.println("url ===="+url);
}

Answer 2

没有直接法，只能通过循环String[]ary={"abc","123","45"};StringBuffersb=newStringBuffer();for(inti=0;i

追问

什么意思？ 我数组只有一个元素 直接提取出来了的