本地建网页服务器4-java(http://localhost:8080/)
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2022-04-29 20:57:02
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index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="MyServlet" method="post">
<input id="name" name="name" type="text">
<input id="pwd" name="pwd" type="text">
<input name="submit" type="submit" value="提交">
</form>
</body>
</html>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
id="WebApp_ID" version="3.1">
<display-name>My</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>MyServlet </servlet-name>
<servlet-class>com.yd.MyServlet </servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>MyServlet </servlet-name>
<url-pattern>/MyServlet </url-pattern>
</servlet-mapping>
</web-app>
MyServlet.java
package com.yd;
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 MyServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=utf-8");
response.setCharacterEncoding("UTF-8");
request.setCharacterEncoding("UTF-8");
/** 设置响应头允许ajax跨域访问 **/
response.setHeader("Access-Control-Allow-Origin", "*");
/* 星号表示所有的异域请求都可以接受， */
response.setHeader("Access-Control-Allow-Methods", "GET,POST");
/**
* 接收json
*/
String name = request.getParameter("name");
String pwd = request.getParameter("pwd");
System.out.println(name);
System.out.println(pwd);
/**
* 返回json
*/
PrintWriter out = response.getWriter();
String title = "成果";
String docType = "<!DOCTYPE html> \n";
out.println(
docType + "<html>\n" + "<head><title>" + title + "</title></head>\n" + "<body bgcolor=\"#f0f0f0\">\n"
+ "<h1 align=\"center\">" + title + "</h1>\n" + "登陆成功\r\n" + "</body>\r\n" + "</html>");
out.close();
}
}