在 Java 字符串中用 \u0023 替换 # [英] Replace # with \u0023 in a Java String

问题描述

用 \u0023 替换 Java 字符串中的 #，如下所示:

Replace # with \u0023 in a Java String which looks like below:

{subjectCategory:"s123", subjectId:"111222333", content:"test #comment999", ownerId:"111", ownerName:"tester"}

{subjectCategory:"s123", subjectId:"111222333", content:"test #comment999", ownerId:"111", ownerName:"tester"}

String.replace("#","\\u0023");

我已经尝试了上述功能，但似乎不起作用.

I've tried the above function, but it doesn't seem to work.

推荐答案

你需要用另一个反斜杠转义反斜杠:

You need to escape the backslash with another backslash:

string = string.replace("#", "\\u0023");

测试:

String s = "hello # world";
s = s.replace("#","\\u0023");
System.out.println(s); // prints hello \u0023 world

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