如何用"替换字符串中的“(双引号)"在 Java 中 [英] how to replace "(double quotes) in a string with " in java

问题描述

我有字符串变量 strVar，其值为 ' "value1" ' 并且我想用 ' " ' 替换值中的所有双引号.所以之后替换值看起来像 ' "value1" '

I have string variable strVar with value as ' "value1" ' and i want to replace all the double quotes in the value with ' " '. So after replacement value would look like ' "value1" '

如何在java中做到这一点?请帮助我.

How to do this in java? Kindly help me.

推荐答案

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str = str.replace(""", "\"")

演示

我会避免使用 replaceAll 因为它使用正则表达式语法来描述要替换的内容和如何替换，这意味着 必须在字符串中转义 "\" 而且在正则表达式 \ 中(需要写成 "\\" 字符串)，这意味着我们需要使用

I would avoid using replaceAll since it uses regex syntax in description of what to replace and how to replace, which means that will have to be escaped in string "\" but also in regex \ (needs to be written as "\\" string) which means that we would need to use

str = str.replaceAll(""", "\\"");

或者可能是小清洁工:

str = str.replaceAll(""", Matcher.quoteReplacement("\""))

通过replace，我们自动添加了转义机制.

With replace we have escaping mechanism added automatically.

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