JSP表单乱码问题

我用的myeclipes+tomcat5.5+oracle在做JAVA WEB现在遇到一个很郁闷的问题我把所有的编码格式（包括JSP文件 JAVA文件 TOMCAT里面的配置文件过滤器）全部改成了“UTF-8”的格式但是我在通过表单编辑提交以后仍然无法得到中文全部是"?????"我是用的servlet在接受表单传递的值在我servlet里面得到的就已经是?????了请问这个是什么原因

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少用url后跟中文参数，如果跟的话，需要在tomcat的server.xml里面设置uriencodeing=“utf-8”
看一下你的jsp页面的编码格式是否为utf-8，如果不是，改成utf-8
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {

request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
response.setContentType("text/html;charset=UTF-8");
chain.doFilter(request, response);
}
这个是我的过滤器你们所说的编码格式我都改了的还是无法正常显示中文
过滤器里设置编码不应该是GBKkcg? 为什么会是UTF-8呢？
过滤器里设置编码不应该是GBK? 为什么会是UTF-8呢？
我记得解决中文乱码问题应该设置成GBK吧。
请确定你是用的POST提交，你这种过滤器只能针对POST提交  确定表单的method=“post”
我也设置过 GBK 还是无法解决所以我很迷惑而且我记得UTF-8是能自动识别中文的
帖点代码吧jsp,servlet的.只是描述,看不出问题地.
这个是servlet的
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html; charset=UTF-8");
int id = ToolKit.object2Int(request.getParameter("id"));
String name = ToolKit.object2String(request.getParameter("name"));
String psw = ToolKit.object2String(request.getParameter("psw"));
String year = ToolKit.object2String(request.getParameter("Year"));
String month = ToolKit.object2String(request.getParameter("Month"));
String day = ToolKit.object2String(request.getParameter("Day"));
String birthday=year+"-"+month+"-"+day;
String education = ToolKit.object2String(request.getParameter("education"));
String eduinformation = ToolKit.object2String(request.getParameter("eduInformation"));
String workexp = ToolKit.object2String(request.getParameter("workExp"));
//workexp=new String(workexp.getBytes("ISO-8859-1"),"gbk");
String type = ToolKit.object2String(request.getParameter("type"));
UserDAO userDAO = new UserDAO();
User user = new User(id, name, psw, birthday, education, eduinformation,workexp); if (type.equals("save")) {//add
String psw1=ToolKit.object2String(request.getParameter("psw1"));
User Account=new User(ToolKit.randomID(),name,psw1,birthday,education,eduinformation,workexp);
userDAO.save(Account);
request.setAttribute("tip", "add success!");
request.getRequestDispatcher("/user/list.jsp").forward(request, response);

} if (type.equals("update")) {//edit
System.out.println(eduinformation+"***"+new String(workexp.getBytes("UTF-8"),"GBK"));
userDAO.update(user);
request.setAttribute("tip", "edit success!");
request.getRequestDispatcher("/user/list.jsp").forward(request, response);

} if (type.equals("del")) {//del
userDAO.del(user);
request.setAttribute("tip", "del success!");
request.getRequestDispatcher("/user/list.jsp").forward(request, response);
} if (type.equals("relog")) {
request.getSession().invalidate();
request.setAttribute("tip", "ע��ɹ�!");
request.getRequestDispatcher("/index.jsp").forward(request, response);
}
}
过滤器的
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {

request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
response.setContentType("text/html;charset=UTF-8");
chain.doFilter(request, response);
}
JSP编辑页面的<%@page language="java" pageEncoding="UTF-8" contentType="text/html;charset=UTF-8"%>
<%@page import="com.tb.hr.util.ToolKit"%>
<%@page import="com.tb.hr.user.dao.UserDAO"%>
<%@page import="com.tb.hr.user.bean.User"%>
<body>
<fieldset>
<legend>
编辑
</legend>
<form action="UserProcess" method="POST">
<input type="hidden" value="update" name="type" />
ID:
<input type="text" name="id" value="<%=user.getId()%>" size="20" />
<br>
Name:
<input type="text" name="name" value="<%=user.getName()%>" size="20" />
<br>
Psw:
<input type="password" name="psw" value="<%=user.getPsw()%>" size="21" />
<br>
Birthday:
<SELECT NAME="Year" SIZE="1" >
<OPTION VALUE="<%= birthday[0]%>" SELECTED><%= birthday[0]%></OPTION>
<% for(int i=1970;i<2004;i++){
%>
<OPTION VALUE="<%= i %>"><%=i  %>
<% }%>
</SELECT>&nbsp年

<SELECT NAME="Month" SIZE="1">
<OPTION VALUE="<%= birthday[1]%>" SELECTED><%= birthday[1]%>
<OPTION VALUE="1">01
<OPTION VALUE="2">02
<OPTION VALUE="3">03
<OPTION VALUE="4">04
<OPTION VALUE="5">05
<OPTION VALUE="6">06
<OPTION VALUE="7">07
<OPTION VALUE="8">08
<OPTION VALUE="9">09
<OPTION VALUE="10">10
<OPTION VALUE="11">11
<OPTION VALUE="12">12
</SELECT>&nbsp月

<SELECT NAME="Day" SIZE="1">
<OPTION VALUE="<%= birthday[2]%>" SELECTED><%= birthday[2]%>
<OPTION VALUE="1">01
<OPTION VALUE="2">02
<OPTION VALUE="3">03
<OPTION VALUE="4">04
<OPTION VALUE="5">05
<OPTION VALUE="6">06
<OPTION VALUE="7">07
<OPTION VALUE="8">08
<OPTION VALUE="9">09
<OPTION VALUE="10">10
<OPTION VALUE="11">11
<OPTION VALUE="12">12
<OPTION VALUE="13">13
<OPTION VALUE="14">14
<OPTION VALUE="15">15
<OPTION VALUE="16">16
<OPTION VALUE="17">17
<OPTION VALUE="18">18
<OPTION VALUE="19">19
<OPTION VALUE="20">20
<OPTION VALUE="21">21
<OPTION VALUE="22">22
<OPTION VALUE="23">23
<OPTION VALUE="24">24
<OPTION VALUE="25">25
<OPTION VALUE="26">26
<OPTION VALUE="27">27
<OPTION VALUE="28">28
<OPTION VALUE="29">29
<OPTION VALUE="30">30
<OPTION VALUE="31">31
</SELECT>&nbsp日
<br>
Education:
<input type="text" name="education" value="<%=user.getEducation() %>"/>
<br>
EduInformation:<br>
<textarea rows="5" cols="80" name="eduInformation"><%=user.getEduInformation() %></textarea>
<br>
WorkExp:<br>
<textarea rows="5" cols="80" name="workExp"><%=user.getWorkExp() %></textarea>
<br><br>
<input type="submit" value="提交" />
</form>
</fieldset>
</body>
建议楼主看看这个帖子：
http://topic.csdn.net/u/20090811/19/e7d6b4ea-6db4-4bd9-9417-28c528fa9cfb.html
过滤器这样配置试试
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
//设置请求时的编码规范
request.setCharacterEncoding("UTF-8");
chain.doFilter(request, response);
//设置响应时的编码规范
response.setContentType("text/html;charset=UTF-8");

}
我测试了,没有问题.String name = ToolKit.object2String(request.getParameter("name")); 不知道你这个ToolKit是做什么用的.
我直接使用
String name = request.getParameter("name");//本身就是个String,还转什么...
System.out.println("名称:"+name);
没有任何问题.你要确定一下,你的过滤器是不是起作用了.在过滤器里打印点什么.我的测试代码:servlet:
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html; charset=UTF-8");
String name = request.getParameter("name");
System.out.println("名称"+name);
//System.out.println(new String(name.getBytes("ISO8859-1"),"UTF-8"));
                //不使用过滤器可以直接用这条语句.
}filter:
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
ServletException {
System.out.println("过滤");//测试过滤器是否起作用.
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
response.setContentType("text/html;charset=UTF-8");
chain.doFilter(request, response); }jsp:
<%@page language="java" pageEncoding="UTF-8" contentType="text/html;charset=UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<form action="UserProcess" method="POST">
Name:
<input type="text" name="name" value="" size="20" />
<input type="submit" value="提交" />
</form>
<br>
</body>
</html>web.xml
<servlet>
<description></description>
<display-name>UserProcess</display-name>
<servlet-name>UserProcess</servlet-name>
<servlet-class>test.UserProcess</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>UserProcess</servlet-name>
<url-pattern>/UserProcess</url-pattern>
</servlet-mapping>
<filter>
<filter-name>EncodeFilter</filter-name>
<filter-class>test.EncodeFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>EncodeFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>servlet和filter在test包下.
3中办法处理你这样的问题,第一种是过滤器
1 :办法
public class EncodingFilter implements Filter {
public void destroy() {
}
public void doFilter(ServletRequest req, ServletResponse resp,
FilterChain chain) throws IOException, ServletException {
req.setCharacterEncoding("GBK");
chain.doFilter(req, resp);
}
public void init(FilterConfig arg0) throws ServletException {
}
}
2:办法 request.setCharacterEncoding("GBK");
3:办法 String xxx = new String(xxx.getBytes("ISO8859-1"))
最后一种使用比较少,就是在tomcat 服务器中配置.如果使用的是mysql数据库,也应该都设置成一样的编码!
[Quote=引用 18 楼 norwolfli 的回复:]
我测试了,没有问题.String name = ToolKit.object2String(request.getParameter("name"));不知道你这个ToolKit是做什么用的.
我直接使用
String name = request.getParameter("name");//本身就是个String,还转什么...
System.out.println("名称:"+name);
没有任何问题.ToolKit.object2String 是一个防止空指针异常的方法
public static final String object2String(Object o) {
return o == null ? "" : o.toString();
}
不过问题我中文乱码的问题还是算解决了我的过滤器是这样的写的
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
chain.doFilter(request, response);
response.setContentType("text/html;charset=UTF-8");
}这当中的语句   1 2 4少任意一个都会出现乱码