Java Chinese garbled problem solving

Source: Internet
Author: User
Tags tomcat server

1 Handling garbled mode:

1 when connecting to the database

Jdbc.properties:jdbc:mysql://localhost:3306/myproject?useunicode=true&characterencoding=utf8

2 Modifying the MySQL configuration file my.ini/my.cnf Default-character-set=utf8

3 Modify the configuration file in Tomcat Server.xml instead

<connector port= "8080" protocol= "http/1.1"

connectiontimeout= "20000"

Redirectport= "8443" uriencoding= "UTF-8"/>

4 Configuring the Spring filter in Web. xml

<filter>

<filter-name>char</filter-name>

<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

<init-param>

<param-name>encoding</param-name>

<param-value>UTF-8</param-value>

</init-param>

</filter>

<filter-mapping>

<filter-name>char</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

5 setting up the MySQL character set

Show variables like ' character_set_% ';

The displayed character_set_** are all set to UTF8, that is: Set character_set_serve= ' UTF8 '

Show variables like '%collation% ';

Set the display to be as follows: Set collation_server= ' Utf8_general_ci '

6. The Chinese characters in the HTTP (POST) request when the value is taken

In the servlet page, add

Request.setcharacterencoding ("Utf-8");

user_name = Request.getparameter ("user_name") = = null? "": Java.net.URLDecoder.decode (Request.getparameter ("user_name"), "UTF-8");

7. Front desk back????

Background assignment: errormessage = Urlencoder.encode ("No periodic data information in Redis", "UTF-8"). Replace ("+", "%20");

Front desk value: decodeURIComponent (errormessage)

Java Chinese garbled problem solving

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