在 Java 中，有没有办法编写字符串文字而不必转义引号? [英] In Java, is there a way to write a string literal without having to escape quotes?

问题描述

假设你有一个字符串文字，里面有很多引号.你可以全部避开它们，但这很痛苦，而且难以阅读.

Say you have a String literal with a lot of quotation marks inside it. You could escape them all, but it's a pain, and difficult to read.

在某些语言中，您可以这样做:

In some languages, you can just do this:

foo = '"Hello, World"';

然而，在Java中，''用于chars，所以你不能以这种方式将它用于Strings.某些语言具有解决此问题的语法.例如，在python中，你可以这样做:

In Java, however, '' is used for chars, so you can't use it for Strings this way. Some languages have syntax to work around this. For example, in python, you can do this:

"""A pretty "convenient" string"""

Java 有没有类似的东西?

Does Java have anything similar?

推荐答案

答案是否定的，证据在 Java 语言规范:

The answer is no, and the proof resides in the Java Language Specification:

  StringLiteral:
   "StringCharacters"

  StringCharacters:
   StringCharacter
   | StringCharacters StringCharacter

  StringCharacter:
   InputCharacter but not " or 
   | EscapeSequence

如您所见，StringLiteral 只能由 " 绑定，并且不能包含没有转义的特殊字符..

As you can see a StringLiteral can just be bound by " and cannot contain special character without escapes..

附注:您可以在项目中嵌入 Groovy，这将扩展 Java 的语法，允许您使用 '''多行字符串 '''、'带单引号的字符串"' 以及 带 ${variable} 的字符串".

A side note: you can embed Groovy inside your project, this will extend the syntax of Java allowing you to use '''multi line string ''', ' "string with single quotes" ' and also "string with ${variable}".

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