浅谈IDEA实用的Servlet模板
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2022-03-03 09:41:29
一、前言不会再idea中创建模板点击这里看教程二、这是模板内容,直接创建自己的模板复制用即可#if (${package_name} && ${package_name} != "")...
一、前言
二、这是模板内容,直接创建自己的模板复制用即可
#if (${package_name} && ${package_name} != "")package ${package_name};#end
#parse("file header.java")
#set( $packagename1 = "#if (${package_name} && ${package_name} != '')${package_name}.#end#parse('file header.java')" )
#set( $packagename2 = "#if (${package_name} && ${package_name} != '')${package_name}/#end#parse('file header.java')" )
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.*;
import java.io.ioexception;
import java.io.printwriter;
/**
* @auther liuweirui
* @date ${date} ${time}
*/
//更改@webservlet中value的值,可以修改访问该servlet文件的名称,规范value = "/visit name"
@webservlet(name = "${name}", value = "/${name}")
public class ${name} extends httpservlet {
/**
* constructor of the object.
*/
public ${name}() {
super();
}
/**
* destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // just puts "destroy" string in log
// put your code here
}
/**
* the doget method of the servlet. <br>
* <p>
* this method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws servletexception if an error occurred
* @throws ioexception if an error occurred
*/
public void doget(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {
dopost(request, response);
}
/**
* the dopost method of the servlet. <br>
* <p>
* this method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws servletexception if an error occurred
* @throws ioexception if an error occurred
*/
public void dopost(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {
//设置请求和响应数据的编码
request.setcharacterencoding("utf-8");
response.setcharacterencoding("utf-8");
response.setcontenttype("text/html;charset=utf-8");
printwriter out = response.getwriter();
//页面内容
out.println("<!doctype html public \"-//w3c//dtd html 4.01 transitional//en\">");
out.println("<html>");
out.println(" <head><title>a servlet</title></head>");
out.println(" <body>");
out.print(" this is ");
out.print(this.getclass());
out.println(", using the post method");
out.println(" </body>");
out.println("</html>");
out.flush();
out.close();
}
/**
* initialization of the servlet. <br>
*
* @throws servletexception if an error occurs
*/
public void init() throws servletexception {
// put your code here
}
/**
* web.xml配置文件书写
* <servlet>
* <servlet-name>${name}</servlet-name>
* <servlet-class>$packagename1${name}</servlet-class>
* </servlet>
* <servlet-mapping>
* <servlet-name>${name}</servlet-name>
* <url-pattern>/$packagename2${name}</url-pattern>
* </servlet-mapping>
*/
}
三、优点
1.设置好的请求和响应数据的编码
2.处理好的doget()和dopost()方法
3.记录日期和创建者(创建者自己改,这里我用的本人的)
4.导入好的包和设置好的包名
5.设置好的@webservlet属性,设置@webservlet属性可以替代配置web.xml
6.设置好的配置web.xml文件的内容,复制好即可用
四、问题
web配置文件的内容有些问题,如图:
这是正常情况,在包下创建文件
这是缺省状态下创建的文件
<servlet-class>的内容在缺省状态下会出现package_name.,这是以下这段代码导致的问题
#if (${package_name} && ${package_name} != '')${package_name}.#end#parse('file header.java')
这段代码貌似不能出现在注释内容里,不然就会出问题,在包中创建正常显示,但在缺省状态下就会显示package_name
使用前还需自己修改
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