这个问题有点搞笑，大家帮我看看

request.setCharacterEncoding( "gb2312 ");
//设置输出信息的格式及字符集
response.setContentType( "text/xml; charset=gb2312 ");
response.setHeader( "Cache-Control ", "no-cache ");
response.setCharacterEncoding( "gb2312 ");
PrintWriter out;
out=response.getWriter();
String cName= " ";
cName=request.getParameter( "categoryName ");
try
{
DataBase db=new DataBase();
String m_SQL= "INSERT INTO categorys (CategoryName) values ( ' ";

m_SQL =m_SQL +cName + " ') ";

db.executeInsert(m_SQL);
out.println( " <response> ");
out.println( " <res> " + "添加成功！ "+ " </res> ");
out.println( " </response> ");

}
catch (Exception ex)
{
out.println(ex.toString());

}

ajax错误，说是页面错误

如果把这句

out.println( " <res> " + "添加成功！ "+ " </res> ");

换成

out.println( " <res> " + "ok good！ "+ " </res> ");

就没问题，也就是说不能返回中文

大家快帮我看看



[解决办法]
out.println( " <?xml version= '1.0 ' encoding= 'gb2312 '?> ");
out.println( " <response> ");
out.println( " <res> " + "添加成功！ "+ " </res> ");
out.println( " </response> ");