3
我想運行兩個servlet的，當我點擊HTML頁面 這裏提交按鈕是servlet和HTML代碼單擊提交按鈕後，如何運行多個servlet？
package com.serv;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class MyServlet
*/
@WebServlet("/MyServlet")
public class MyServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
response.setContentType("text/html");
PrintWriter out = response.getWriter();
try {
String user=request.getParameter("user");
out.println("<h2>"+user+"</h2>");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
這裏是第二屆的servlet
package com.serv;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class MyServlet2
*/
@WebServlet("/MyServlet2")
public class MyServlet2 extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
response.setContentType("text/html");
PrintWriter out1=response.getWriter();
try {
String user1=request.getParameter("user1");
out1.println("<h2>"+user1+"</h2>");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
下面是HTML文件
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form method="post" action="MyServlet">
Name<input type="text" name="user">
</form>
<form method="post" action="MyServlet2">
Sir Name<input type="text" name="user1">
<input type="submit" value="submit">
</form>
</body>
</html>
我試着把提交按鈕放在不同的地方，但它不工作。有人能告訴我怎麼寫代碼，所以這兩個servlet將被稱爲
一個servlet只能處理一個http請求，如果需要預處理，您可以創建一個篩選器 – Athanor
對此有什麼用？通常應該有從請求到servlet的1：1映射。如果你想要發生多種事情，你的servlet應該對業務層進行不同的調用。 –