utf8乱码解决方案[适合tomcat部署的jsp应用]

cxg518

　　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" />