How to solve jsp mysql garbled code

Causes of garbled characters:

1. When the encoding of the JSP page is inconsistent with the encoding of the MySQL database, garbled characters often occur. . For example, the JSP page uses UTF-8 encoding, while the MySQL database uses GBK encoding.

2. Incorrect database character set: The default character set used by the MySQL database is the Latin character set (latin1), not the UTF-8 character set that supports Chinese. When you insert or read Chinese characters into a MySQL database, you are likely to encounter garbled characters.

3. Incorrect database connection encoding method: When JDBC connects to MySQL, you need to set the connection encoding method. If the setting is incorrect, it will also cause garbled code problems.

Solution:

1. Set the page encoding method: add , ensure that the encoding method of the JSP page is consistent with the encoding method of the MySQL database.

2. To set the character set of the MySQL database to UTF-8, you need to modify the MySQL my.cnf file. Add the following lines of code under [mysqld]:

[mysqld]
character-set-server=utf8
collation-server=utf8_general_ci

Note: Be sure to modify MySQL's existing character set related items to UTF-8 instead of adding the above code directly.

3. Set the database connection encoding method: When JDBC connects to MySQL, you need to set the connection encoding method to ensure that the encoding methods of the JSP page and the MySQL database are consistent. For example, you can set it by adding the charset=UTF-8 parameter to the JDBC URL

jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8

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