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分享简单问题求教——偶是新手（在线等候）
//CounterServlet.java
//
package mypack;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class CounerServlet extends HttpServlet{
private static final String CONTENT_TYPE="text/html";
public void init(ServletConfig config)throws ServletException{
super.init(config);
}
public void doGet(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException{
doPost(request,response);
}
public void doPost(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException{
ServletContext context=getServletContext();
Integer count=(Integer)context.getAttribute("count");
if(count==null){
count=new Integer(0);
context.setAttribute("count",new Integer(0));
}
response.setContextType("text/html");
PrintWriter out=response.getWriter();
out.println("<html><head><title>WebCounter</title></head>");
out.println("<body><p>The current COUNT is :"+count+"</p></body></html>");
count=new Integer(count.initValue()+1);
context.setAttribute("count",count);
}
public void destroy(){}
}
其中我定义的HttpServletResponse类response,为什么response.setContextType("text/html");＆response.getWriter();不能用啊？
好多书上都是这么写的，调试的时候却说没有这样的方法，假如定义成ServletResponse就可以了
请教各位，怎么处理啊？
//
package mypack;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class CounerServlet extends HttpServlet{
private static final String CONTENT_TYPE="text/html";
public void init(ServletConfig config)throws ServletException{
super.init(config);
}
public void doGet(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException{
doPost(request,response);
}
public void doPost(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException{
ServletContext context=getServletContext();
Integer count=(Integer)context.getAttribute("count");
if(count==null){
count=new Integer(0);
context.setAttribute("count",new Integer(0));
}
response.setContextType("text/html");
PrintWriter out=response.getWriter();
out.println("<html><head><title>WebCounter</title></head>");
out.println("<body><p>The current COUNT is :"+count+"</p></body></html>");
count=new Integer(count.initValue()+1);
context.setAttribute("count",count);
}
public void destroy(){}
}
其中我定义的HttpServletResponse类response,为什么response.setContextType("text/html");＆response.getWriter();不能用啊？
好多书上都是这么写的，调试的时候却说没有这样的方法，假如定义成ServletResponse就可以了
请教各位，怎么处理啊？
...全文
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jo_kevin 2005-10-21
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不是response.setContextType而是response.setContentType
