如何删除Java中特定字符之前的所有字符? [英] How to remove all characters before a specific character in Java?

问题描述

我有一个字符串，我通过 html 表单获取值，所以当我获取值时，它出现在 URL 中，所以我想删除特定字符之前的所有字符，即 =我也想删除这个字符.我只想保存 = 之后的值，因为我需要从变量中获取该值..

I have a string and I'm getting value through a html form so when I get the value it comes in a URL so I want to remove all the characters before the specific charater which is = and I also want to remove this character. I only want to save the value that comes after = because I need to fetch that value from the variable..

我也需要删除 = ，因为我试图在它之后获取字符串中的字符/值...

EDIT : I need to remove the = too since I'm trying to get the characters/value in string after it...

推荐答案

你可以使用 .substring():

String s = "the text=text";
String s1 = s.substring(s.indexOf("=")+1);
s1.trim();

then s1 包含原始字符串中 = 之后的所有内容.

then s1 contains everything after = in the original string.

.trim() 删除字符串(前导空格)的第一个字符(不是空格，例如字母、数字等)之前的空格，并删除最后一个字符之后的空格字符(尾随空格).

.trim() removes spaces before the first character (which isn't a whitespace, such as letters, numbers etc.) of a string (leading spaces) and also removes spaces after the last character (trailing spaces).

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