IntelliJ IDEA 搭建JSP+Servlet的web开发多个(八)

- 日理万妓 2024-02-18 20:10 22阅读 0赞

一、创建一个项目

File -> New Project -> 输入项目名称“myjsps” ，选择Project SDK为1.8

![20180515150108908][]

二、创建一个Module

鼠标点中项目名称demos -> 右键选择New，选择Module

![20180515150404491][]

单击Module如图所示:

![20180515150420164][]

ModuleName lesson3

![20180515150447672][]

创建src|New|servlet

![20180515150518262][]

ServletName: TestServlet

![20180515150551881][]

创建完后,发现是红色的,说明没有导入Apache的包

![20180515150629610][]

按ctrl+shift+Alt+S 打开Project Structure |选中Source|创建文件夹classes,lib

![20180515150831909][]

在选择Dependencies依赖包

![20180515150617577][]

单击JARs or directories

![20180515151256335][]

单击完成后!就不会出现红色的哦!

![20180515150925618][]

启动部署:

:![2018051515142158][]

**创建了三个web(lesson1,lesson2,lesson3)**

![20180515152013259][]

运行页面

lesson3工程运行效果

![20180515151400899][]

![20180515151608333][]

Servlet

import java.io.IOException;
    import java.io.PrintWriter;
    
    /**
     * Created by Administrator on 18-5-15.
     */
    @javax.servlet.annotation.WebServlet(name = "TestServlet",urlPatterns = {"/tt"})
    public class TestServlet extends javax.servlet.http.HttpServlet {
        protected void doPost(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws javax.servlet.ServletException, IOException {
    
        }
    
        protected void doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws javax.servlet.ServletException, IOException {
            response.setContentType("text/html;charaset=utf-8");
            PrintWriter out = response.getWriter();
            out.println("this is Servlet Annotation!");
        }
    }

<a href="/tt">Click ME TT</a>

lesson1工程运行效果

![20180515151513458][]

@WebServlet(name = "LoginServlet")
    public class LoginServlet extends HttpServlet {
        protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
             PrintWriter out=response.getWriter(); //写入对象
             response.setContentType("text/html;charset=utf-8");  //设置响应的字符集格式为UTF-8
             request.setCharacterEncoding("utf-8");
             String name=request.getParameter("uname");
             String pass=request.getParameter("upass");
    
             out.println(name+"\t"+pass);
    
              response.sendRedirect("my");
    
        }

![201805151515419][]

@WebServlet(name = "MyServlet")
    public class MyServlet extends HttpServlet {
        protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
        }
    
        protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
           //必须写这个内容类项
            response.setContentType("text/html;charset=utf-8");
    
            //输出对象
            PrintWriter out=response.getWriter();
            out.println("<html><head><body><a href='reg'>click Me@@</a></body></head></html>");
    
           // response.sendRedirect("reg");
    
            //最后要记得清空缓存区，并且关闭。
            out.flush();
            out.close();
        }
    }

![20180515151554213][]

@WebServlet(name = "RegServlet",urlPatterns = {"/reg"})
    public class RegServlet extends HttpServlet {
        protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
        }
    
        protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            PrintWriter out = response.getWriter();
            out.println("Test RegServlet Annotation!");
        }
    }

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