📄 modifyblogservlet.java
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package blogServlet;
/**
* 修改用户日志
*/
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class ModifyBlogServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public ModifyBlogServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
public void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
PrintWriter out = response.getWriter();
//验证用户是否登录
javax.servlet.http.HttpSession session = request.getSession();
UserInfo ui = (UserInfo)session.getAttribute("LoginUser");
if(null==ui){
System.out.println("此用户还未登录，不能进行修改操作");
out.write("请先登录或注册");
request.getRequestDispatcher("login.html").forward(request, response);
return ;
}
UserBlog ub = new UserBlog();
ub.setId(Integer.parseInt(request.getParameter("id")));
ub.setTitle(request.getParameter("title"));
ub.setKeyword(request.getParameter("keyword"));
ub.setContent(request.getParameter("content"));
//首先显示此日志的全部内容
out.println("<HTML>");
out.println(" <HEAD><TITLE>修改日志页面</TITLE></HEAD>");
out.println(" <BODY>");
out.println("<FORM action=\"DBModifyBlogServlet\" method=\"post\"><br>");
out.println("<input type=\"hidden\" name=\"blogID\" value="+ub.getId()+"><br>");
out.println("日志标题 ：<input type=\"text\" name=\"title\" value="+ub.getTitle()+"><br>");
out.println("关 键字 ：<input type=\"text\" name=\"keyword\" value="+ub.getKeyword()+"><br>");
out.println("内 容 ：<input type=\"text\" name=\"content\" value="+ub.getContent()+"><br>");
out.println("<input type=\"submit\" name=\"submit\" value=\"提交\">");
out.println("</FORM>");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
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