Role of the useUnicodetrueamp; amp; characterEncodingUTF-8 in the mysql connection url bitsCN.com
Functions of useUnicode = true & characterEncoding = UTF-8 in mysql connection url
When we connect to the mysql database, we usually add useUnicode =
Mysql connection url useUnicode = true & characterEncoding = UTF-8 in our connection to the mysql database will generally add useUnicode = true & characterEncoding = UTF-8 after the url, but what do you want to add? Www.2cto.com is used to specify
MySQL JDBC URL format for connector/j The following example:Jdbc:mysql://[host][,failoverhost ...] [:p ort]/[database]»[? PROPERTYNAME1] [=propertyvalue1] [&propertyname2] [=propertyvalue2] ...Jdbc:mysql://[host:port],[host:port].../[database]»[?
When we connect to the MySQL database, we usually add useunicode = true & characterencoding = UTF-8 after the URL, but what do you want to add?
The added function is to specify the encoding and decoding formats of characters.
For example, the
The role of useUnicodetruecharacterEncodingUTF-8 in mysql connection url reproduced: www.cnblogs.comxuefuwuarchive201205062486577.html? We usually add useUnicodetruecharacterEncodingUTF-8 after the url when connecting to the mysql database, but ask
There was a problem when the data source configuration was added with the Encoding conversion format:The reference to entity "characterencoding" must end with the '; ' delimiterThis error is the problem of setting the URL of the data source link in
The purpose of the addition is to specify the encoding and decoding format of the characters. For example: The MySQL database uses GBK encoding, and the project database uses UTF-8 encoding. If Useunicode=true&characterencoding=utf-8 is
name= "url" value= "Jdbc:mysql://localhost:3306/ceshi?useunicode =true&characterencoding=utf8 "/>A normal MySQL configuration has been the error:The reference to entity "characterencoding" must end with the '; ' delimiter.Step through the several
Workaround:Add the following configuration to Web. xml:encodingFilterorg.springframework.web.filter.CharacterEncodingFilterencodingUTF8forceEncodingtrueAnd then change the database
As a bridge between Java and database, JDBC is one of the foundation of Javaweb background, which needs us to be familiar with its principle and usage.
JDBC General steps for using are:
1, the use of reflection loading driver, such as Class.forName (
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