[英]ReplaceAll Method
I want to replace "\\" with this "/" in my string.我想在我的字符串中用这个“/”替换“\\”。 I am using method replaceAll for this.
为此,我正在使用方法 replaceAll。 But it is giving me error.
但它给了我错误。
String filePath = "D:\pbx_u01\apache-tomcat-6.0.32\bin\uploadFiles\win.jpg";
String my_new_str = filePath.replaceAll("\\", "//");
Just use replace
.只需使用
replace
。
The method replaceAll
takes a regular expression and yours would be malformed.方法
replaceAll
需要一个正则表达式,你的将是格式错误的。
String filePath = "D:/pbx_u01/apache-tomcat-6.0.32/bin/uploadFiles/win.jpg";
System.out.println(filePath.replace("/", "\\"));
Output输出
D:\pbx_u01\apache-tomcat-6.0.32\bin\uploadFiles\win.jpg
When you absolutely want to use regex for this, use:当您绝对想为此使用正则表达式时,请使用:
String filePath = "D:\\pbx_u01\\apache-tomcat-6.0.32\\bin\\uploadFiles\\win.jpg";
String my_new_str = filePath.replaceAll("\\\\", "/");
Output of my_new_str
would be: my_new_str
输出将是:
D:/pbx_u01/apache-tomcat-6.0.32/bin/uploadFiles/win.jpg
Just be sure to notice the double backslashes \\\\
in the source String
(you used single ones \\
in your question.)只是一定要注意双反斜杠
\\\\
在源String
(您使用单一的人\\
你的问题。)
But Mena showed in his answer a much simpler, more readable way to achive the same.但梅纳在他的回答中展示了一种更简单、更易读的方法来实现同样的目标。 (Just adopt the slashes and backslashes)
(只需采用斜杠和反斜杠)
You are unable because character '//' should be typed only single '/' .你不能,因为字符'//'应该只输入一个'/' 。
String filePath = "D:\\pbx_u01\\apache-tomcat-6.0.32\\bin\\uploadFiles\\win.jpg"
String my_new_str = filePath.replaceAll("\\", "/");
Above may be fail during execution giving you a PatternSyntaxException , because the first String is a regular expression so you use this,上面可能会在执行过程中失败给你一个PatternSyntaxException ,因为第一个 String 是一个正则表达式所以你使用这个,
String filePath = "D:\\pbx_u01\\apache-tomcat-6.0.32\\bin\\uploadFiles\\win.jpg"
String my_new_str = filePath.replaceAll("\\\\", "/");
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