j2ee项目编码统一

1.数据库建立为UTF-8格式
2.项目右键属性为UTF-8格式
3.所有页面申明为UTF-8
4.JDBC URL设为：UTF-8
jdbc:mysql://localhost:3306/company?useUnicode=true&characterEncoding=utf-8
5.数据库Driver选择UTF-8格式
6.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" /> 

7.加编码过滤器SetCharacterEncodingFilter.java 
注意：根据所在包名确定具体使用哪个包

import java.io.IOException;   
  
import javax.servlet.Filter;   
  
import javax.servlet.FilterChain;   
  
import javax.servlet.FilterConfig;   
  
import javax.servlet.ServletException;   
  
import javax.servlet.ServletRequest;   
  
import javax.servlet.ServletResponse;   
  
public class SetCharacterEncodingFilter implements Filter {   
  
    protected String encoding = null;   
  
    protected FilterConfig filterConfig = null;   
  
    protected boolean ignore = true;   
  
    public void init(FilterConfig filterConfig) throws ServletException {   
  
        this.filterConfig = filterConfig;   
  
        this.encoding = filterConfig.getInitParameter("encoding");   
  
        String value = filterConfig.getInitParameter("ignore");   
  
        if (value == null)   
  
            this.ignore = true;   
  
        else if (value.equalsIgnoreCase("true"))   
  
            this.ignore = true;   
  
        else if (value.equalsIgnoreCase("yes"))   
  
            this.ignore = true;   
  
        else  
  
            this.ignore = false;   
  
    }   
  
    public void doFilter(ServletRequest request, ServletResponse response,   
            FilterChain chain) throws IOException, ServletException {   
  
        // TODO 自动生成方法存根   
  
        if (ignore || (request.getCharacterEncoding() == null)) {   
  
            String encoding = selectEncoding(request);   
  
            if (encoding != null)   
  
                request.setCharacterEncoding(encoding);   
  
        }   
  
        chain.doFilter(request, response);   
  
    }   
  
    public void destroy() {   
  
        // TODO 自动生成方法存根   
  
        this.encoding = null;   
  
        this.filterConfig = null;   
  
    }   
  
    protected String selectEncoding(ServletRequest request) {   
  
        return (this.encoding);   
  
    }   
  
}  

在web.xml里面映射配置

<filter>  
  <filter-name>Set Character Encoding</filter-name>  
  <filter-class>com.yourcompany.util.SetCharacterEncodingFilter</filter-class>  
  <init-param>  
    <param-name>encoding</param-name>  
    <param-value>UTF-8</param-value>  
  </init-param>  
</filter>  
<filter-mapping>  
  <filter-name>Set Character Encoding</filter-name>  
  <url-pattern>/*</url-pattern>  
</filter-mapping>