1.配置成首页的问题
<Logger className="org.apache.catalina.logger.FileLogger"
directory="logs" prefix="localhost_log." suffix=".txt"
timestamp="true"/>
这里增加：
<Context path="" docBase="C:/Tomcat/webapps/myweb" debug="0" reloadable="true" crossContext="true"/>
要说的是myweb/web-inf/web.xml的文件最好改下名，我的从weblogic转过来，看了很多论坛，因为这里没改名，一直错误，还不知道怎回事，改了名就好了，该是冲突问题。
2. 乱码问题
如果你没有乱码，不用看，有了乱码，你就成乱麻，总得要解决，现在论坛有说这，有说那，只要解决了你的难题的，就是好方案。
我的问题时，从数据库中读出没乱码，写入出现乱码，我的方案是：
(1).在filters中做个SetCharacterEncodingFilter.java的bean文件。
package filters;
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;
import javax.servlet.UnavailableException;
public class SetCharacterEncodingFilter implements Filter{
protected String encoding = null;
protected FilterConfig filterConfig = null;
protected boolean ignore = true;
public void destroy() {
this.encoding = null;
this.filterConfig = null;
}
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain)
throws IOException, ServletException {
// Conditionally select and set the character encoding to be used
if (ignore || (request.getCharacterEncoding() == null)) {
String encoding = selectEncoding(request);
if (encoding != null)
request.setCharacterEncoding(encoding);
}
// Pass control on to the next filter
chain.doFilter(request, response);
}
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;
}
protected String selectEncoding(ServletRequest request) {
return (this.encoding);
}
}
编译上段代码时，要在classpath中注册servlet.jar文件。
(2).在web.xml中引入：
<filter>
<filter-name>Set Character Encoding</filter-name>
<filter-class>filters.SetCharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>GBK</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>Set Character Encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
(3)在server.xml中修改
port="8080" maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
debug="0" connectionTimeout="20000"
disableUploadTimeout="true" URIEncoding="ISO-8859-1" />
有种说法是把URIEncoding="ISO-8859-1"可换成URIEncoding="GBK"，自己测试，对的就是硬道理。
最后顺便说下mysql-connector-java-5.0.3-bin.jar的jdbc连接代码，与以前低版本的不一样。
String sDBDriver="com.mysql.jdbc.Driver";
String sConnStr="jdbc:mysql://localhost:3306/gain?user=root&password=password";