1. java类： CharacterEncodingFilter
import javax.servlet.*;
import java.io.IOException;
public class CharacterEncodingFilter implements Filter {
private String encoding = "UTF-8";
private boolean forceEncoding = true;
/**
* Set the encoding to use for requests. This encoding will be
* passed into a ServletRequest.setCharacterEncoding call.
* <p>Whether this encoding will override existing request
* encodings depends on the "forceEncoding" flag.
*/
public void setEncoding(String encoding) {
this.encoding = encoding;
}
/**
* Set whether the encoding of this filter should override existing
* request encodings. Default is "false", i.e. do not modify encoding
* if ServletRequest.getCharacterEncoding returns a non-null value.
*/
public void setForceEncoding(boolean forceEncoding) {
this.forceEncoding = forceEncoding;
}
public void init(FilterConfig filterConfig) throws ServletException {
this.encoding = filterConfig.getInitParameter("encoding");
String force = filterConfig.getInitParameter("forceEncoding");
this.forceEncoding = (force == null) || Boolean.valueOf(force).booleanValue() ;
}
public void doFilter(ServletRequest servletRequest,
ServletResponse servletResponse,
FilterChain filterChain) throws IOException, ServletException {
if (this.forceEncoding || servletRequest.getCharacterEncoding() == null) {
servletRequest.setCharacterEncoding(this.encoding);
}
filterChain.doFilter(servletRequest, servletResponse);
}
public void destroy() {
}
}
2. 在web.xml配置文件里加Filters Configurations
<!-- Filters Configurations -->
<filter>
<filter-name>CHARACTER_ENCODING</filter-name>
<filter-class>
common.encoding.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CHARACTER_ENCODING</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
3.数据库建立为UTF-8格式
4.项目右键属性为UTF-8格式
5.所有页面申明为UTF-8
6.JDBC URL设为：UTF-8
jdbc:mysql://localhost:3306/databaseuse?useUnicode=true&characterEncoding=utf-8
7.数据库Driver选择UTF-8格式
8.Tomcat编码改成UTF-8
在server.xml里面增加URIEncoding="UTF-8"
<Connector port="8080" maxHttpHeaderSize="8192" maxThreads="150" minSpareThreads="25" maxSpareThreads="75" enableLookups="false" redirectPort="8443" acceptCount="100" connectionTimeout="20000" disableUploadTimeout="true" URIEncoding="UTF-8" />