1.配置成首頁的問題
? ??????? <Logger className="org.apache.catalina.logger.FileLogger"
???????????????? directory="logs"? prefix="localhost_log." suffix=".txt"
??????????? timestamp="true"/>
?????? ?這里增加：
???????? <Context path="" docBase="C:/Tomcat/webapps/myweb" debug="0" reloadable="true" crossContext="true"/>
? 要說的是myweb/web-inf/web.xml的文件最好改下名，我的從weblogic轉過來，看了很多論壇，因為這里沒改名，一直錯誤，還不知道怎回事，改了名就好了，該是沖突問題。
2. 亂碼問題
如果你沒有亂碼，不用看，有了亂碼，你就成亂麻，總得要解決，現在論壇有說這，有說那，只要解決了你的難題的，就是好方案。
我的問題時，從數據庫中讀出沒亂碼，寫入出現亂碼，我的方案是：
(1).在filters中做個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);
}
}
編譯上段代碼時，要在classpath中注冊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" />
???? 有種說法是把URIEncoding="ISO-8859-1"可換成URIEncoding="GBK"，自己測試，對的就是硬道理。
最后順便說下mysql-connector-java-5.0.3-bin.jar的jdbc連接代碼，與以前低版本的不一樣。
String sDBDriver="com.mysql.jdbc.Driver";
String sConnStr="jdbc:mysql://localhost:3306/gain?user=root&password=password";