slf4j format 占位符使用{}。

For example,

MessageFormatter.format("Hi {}.", "there")

1

MessageFormatter.format("Hi {}.","there")

will return the string “Hi there.”.

The {} pair is called the formatting anchor. It serves to designate the location where arguments need to be substituted within the message pattern.

In case your message contains the ‘{‘ or the ‘}’ character, you do not have to do anything special unless the ‘}’ character immediately follows ‘{‘. For example,

MessageFormatter.format("Set {1,2,3} is not equal to {}.", "1,2");

1

MessageFormatter.format("Set {1,2,3} is not equal to {}.","1,2");

will return the string “Set {1,2,3} is not equal to 1,2.”.

If for whatever reason you need to place the string “{}” in the message without its formatting anchor meaning, then you need to escape the ‘{‘ character with ‘\’, that is the backslash character. Only the ‘{‘ character should be escaped. There is no need to escape the ‘}’ character. For example,

MessageFormatter.format("Set \\{} is not equal to {}.", "1,2");

1

MessageFormatter.format("Set \\{} is not equal to {}.","1,2");

will return the string “Set {} is not equal to 1,2.”.

The escaping behavior just described can be overridden by escaping the escape character ‘\’. Calling

MessageFormatter.format("File name is C:\\\\{}.", "file.zip");

1

MessageFormatter.format("File name is C:\\\\{}.","file.zip");

官方API https://www.slf4j.org/api/org/slf4j/helpers/MessageFormatter.html

©版权声明：本文为【翰林小院】(huhanlin.com)原创文章，转载时请注明出处！

发布在 2018-06-01 13:50:46

分类：JAVA, JAVA_API

标签：sl4j

发表评论电子邮件地址不会被公开。

评论

姓名

电子邮件

站点