如何在servlet中发送响应状态？
package org.nhooo.example.servlet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
public class ResponseStatus extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//所有响应状态都在HttpServletResponse类中定义。我们
//然后可以使用这些常量值将过程状态返回到
//浏览器。
response.setContentType("text/html");
//假设此Servlet仅处理对页面名称inputForm的请求。所以
//当找不到其他页面名称错误页面的用户请求时404
//返回，否则将为200，表示可以。
String page = request.getParameter("page");
if (page != null && page.equals("inputForm")) {
response.setStatus(HttpServletResponse.SC_OK);
} else {
response.sendError(HttpServletResponse.SC_NOT_FOUND, "The requested page ["
+ page + "] not found.");
}
}
}这是HttpServletResponse类中定义的所有可用状态代码的列表。