今天刚研究JSP乱码问题，按照大家总结的经验一步步的做，但是始终解决不了。 - 编程论坛

#2

可可℃乐2006-06-30 09:34

在写入数据库之前对来自表单的信息做字符集的转换。
String wordName=new String(request.getParameter("wordName").getBytes("iso-8859-1"),"gb2312") ;
你试试这样行不行。

#3

Grace_TT2006-06-30 09:47

谢谢你呀，
不过要一个一个的实现呀，那不累死了！

#4

xiao_20082006-07-05 21:29

加个过滤器

#5

神vLinux飘飘2006-07-05 23:17

自从有了过滤器,我还真没把数据库的乱码当一回事

#6

水影月圆2006-07-08 17:10

什么过滤器
乱码问题怎么解决？每次显示都是????? 难看死了！

#7

孤雁飘雪2006-07-08 21:04

<%@page language="java" contentType="text/html;charset=GB2312"%>

直接写这个就可以了！！！

#8

神vLinux飘飘2006-07-08 22:19

过滤器代码
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 SetEncodingFilter
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 {
if (ignore || (request.getCharacterEncoding() == null)) {
request.setCharacterEncoding(selectEncoding(request));
}
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") || value.equalsIgnoreCase("yes"))
this.ignore = true;
else
this.ignore = false;
}

protected String selectEncoding(ServletRequest request) {
return (this.encoding);
}

public FilterConfig getFilterConfig() {
return filterConfig;
}

public void setFilterConfig(FilterConfig filterConfig) {
this.filterConfig = filterConfig;
}

}

web.xml关于过滤器的配置
<filter>
<filter-name>SetEncodingFilter</filter-name>
<filter-class>enova.util.SetEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>SetEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
<dispatcher>INCLUDE</dispatcher>
<dispatcher>ERROR</dispatcher>
</filter-mapping>

[此贴子已经被作者于2006-7-8 22:22:59编辑过]

#9

gady1002006-07-10 17:16

,学习中啊

#10

球球2006-07-11 13:37

加入：
request.setCharacterEncoding("gb2312");
response.setCharacterEncoding("gb2312");
试试，我这样可以。

#11

孤雁飘雪2006-07-13 15:49

还可以编写一个类函数
public class ISOtoGb2312
{
public static String convert(String str)
{
try
{
byte[] bytesStr=str.getBytes("ISO-8859-1");
return new String(bytesStr,"gb2312");
}
catch(Exception ex)
{
return str;
}
}
}
然后在jsp页面里面调用这个类函数就可以了！！

#12

Grace_TT2006-07-24 20:29

以下是引用神vLinux飘飘在2006-7-8 22:19:27的发言：
过滤器代码
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 SetEncodingFilter
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 {
if (ignore || (request.getCharacterEncoding() == null)) {
request.setCharacterEncoding(selectEncoding(request));
}
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") || value.equalsIgnoreCase("yes"))
this.ignore = true;
else
this.ignore = false;
}

protected String selectEncoding(ServletRequest request) {
return (this.encoding);
}

public FilterConfig getFilterConfig() {
return filterConfig;
}

public void setFilterConfig(FilterConfig filterConfig) {
this.filterConfig = filterConfig;
}

}

web.xml关于过滤器的配置
<filter>
<filter-name>SetEncodingFilter</filter-name>
<filter-class>enova.util.SetEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>SetEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
<dispatcher>INCLUDE</dispatcher>
<dispatcher>ERROR</dispatcher>
</filter-mapping>

dispatcher 起了什么作用？

过滤器只能解决数据库的乱码呢，还是所有的乱码都能解决？

[此贴子已经被作者于2006-7-24 20:30:59编辑过]

#13

神vLinux飘飘2006-07-24 20:35

所有乱码一次性解决，因为乱码的根源在于WEB向应用程序传递中文数据的时候会产生乱码导致的。MYSQL的乱码可以通过连接MYSQL的URL解决，最好统一用UTF－8