表单提交中文至Servlet乱码
环境：NetBeans + JDK1.6
源代码：
index.jsp
<HTML>
<HEAD>
<TITLE> TEST </TITLE>
</HEAD>
<BODY>
<FORM METHOD=GET ACTION= "/Servlet/Hello ">
<INPUT TYPE=TEXT NAME= "name " > <P>
<INPUT TYPE=SUBMIT>
</FORM>
</BODY>
</HTML>
Hello.JAVA
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class Hello extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
res.setContentType( "text/html;charset=UTF-8 ");
res.setHeader( "Content-language ", "zh ");
PrintWriter out = res.getWriter();
//String name = req.getParameter( "name ")
String name =new String(req.getParameter( "name ").getBytes( "iso-8859-1 "), "UTF-8 ");
out.println( " <HTML> ");
out.println( " <HEAD> <META content=text/html; charset=gb2312 http-equiv=Content-Type> </HEAD> ");
out.println( " <BODY> ");
out.println( "你好, " + name);
out.println( " </BODY> </HTML> ");
}
public String getServletInfo() {
return "A servlet that knows the name of the person to whom it 's " +
"saying hello ";
}
}
也看了之前不少朋友关于乱码的文章，可是一直没有解决
上面的程序用POST方法则一点问题也没有，用GET方法就是乱码
我是个超级新手，基本上啥也不会，过滤器也不知道怎么加进去~~
还是NETBEANS5.5的傻瓜环境
请教~~
[解决办法]
写一个filter，在其doFilter(ServletRequest request, ServletResponse response, FilterChain chain) 方法中调用request.setCharacterEncoding( "GB2312 ");
package com.forecast.filter;
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 GBKFilter implements Filter
{
public void destroy()
{
// XXX Auto-generated method stub
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
ServletException
{
request.setCharacterEncoding( "GBK ");
}
public void init(FilterConfig arg0) throws ServletException
{
// XXX Auto-generated method stub
}
}
然后在web.xml中配置这个这个filter映射为*模式，
<filter>
<filter-name> gbk </filter-name>
<filter-class> com.forecast.filter.GBKFilter </filter-class>
</filter>
<filter-mapping>
<filter-name> gbk </filter-name>
<url-pattern> /* </url-pattern>
</filter-mapping>
[解决办法]
如果是像你所做的那样，可以把“String name =new String(req.getParameter( "name ").getBytes( "iso-8859-1 "), "UTF-8 ");
”这行给去掉，如果你要转换到后台应用，也就是后台要用到表单的数据，可以如下做法：
String name =new String(req.getParameter( "name ").getBytes( "UTF-8 "), "iso-8859-1 ");
或
String name =new String(req.getParameter( "name ").getBytes( "UTF-8 "), "gbk2316 ");
Thanks
Hima