我的servlet代码：
public class isValidate extends HttpServlet {
public void init() {
}
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
res.setContentType( "text/plain; charset=utf-8 ");
PrintWriter out = res.getWriter();
String filepath ;
String filename;
filename = req.getParameter( "radio ");
if(filename==null)
out.println( " <script> alert( '请选择要验证的文件 ') </script> ");
filepath = getServletContext().getRealPath( "/ ")+ "sig\\data\\idl\\ "+filename;
/*
* 下面调用idlj对idl文件进行检测
*/
String temp = getServletContext().getRealPath( "/ ")
+ "sig\\data\\temp\\ "; // idlj生成文件的临时存放路径；
try {
String command = "idlj -td " + temp + " " + filepath;
Process process = Runtime.getRuntime().exec(command);
BufferedReader reader = new BufferedReader(new InputStreamReader(
process.getErrorStream()));
String line = null;
String mess = " ";
boolean err = true;
while ((line = reader.readLine()) != null)
{mess+=line+ "\r "; err=false;}
process.waitFor();
reader.close();
process.destroy();
// File tempFile = new File(temp);
// tempFile.delete();
if(err)
out.println( " <script> alert( '恭喜,文件通过语法验证！ ');top.main.location.href= 'syntaxAnalysis.jsp '; </script> ");
else {
req.setAttribute( "message ", mess);
getServletConfig().getServletContext().getRequestDispatcher( "/display.jsp ").forward(req, res); //servlet跳转
}
} catch (Exception e) {
e.printStackTrace();
}
out.close();
}// doGet
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
doGet(req,res);
}
}
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其中跳转语句为：
req.setAttribute( "message ", mess);
getServletConfig().getServletContext().getRequestDispatcher( "/display.jsp ").forward(req, res); //servlet跳转
//直接getServletContext().getRequestDispatcher( "/display.jsp ").forward(req, res); 也不行
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PS：每次保存完之后，res.setContentType( "text/plain; charset=utf-8 ");这一行总是被eclipse编译成灰底色。是不是和这个有关系？
PS2：这个servlet和目标jsp页面display.jsp都是在top.main这个frame中的！同一个frame中，应该没有关系吧？！ 另：我在地址栏直接输入servlet的地址（保开frame框架了），还是不能跳转！
------解决方案--------------------
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