Java struts2 getting started --- Internationalization

1. Concepts of internationalization 1. People from different countries access the same website in different languages. 2. Naming rules for properties files on JSP pages: base name --- language -- country, for example, message_zh_CN.properties >>> use tags to obtain the corresponding values, for example: <s: textfield key = "login. username "name =" username "/> <s: submit key =" login. submit "/> login. username corresponds to the key value in the properties file. >>> Assign dynamically <s: text name = "key"> <s: param> attribute value </s: param> to placeholders such as {0} and {1 }.