新建一个com.autumn.servlet.Dispatcher.java文件
package com.autumn.servlet; import javax.servlet.ServletConfig; import javax.servlet.ServletException; /** * Created by Administrator on 2018/6/6. */ public class Dispatcher extends org.springframework.web.servlet.DispatcherServlet { private static final long serialVersionUID = -7677752525845571027L; @Override public void init(ServletConfig config) throws ServletException { super.init(config); String appName = config.getInitParameter("appName").trim(); //web.xml中初始化参数 config.getServletContext().setAttribute("appName", appName); //将这个appName放入servletContext中 } }
<servlet> <servlet-name>bookkeep-webservlet-name> <servlet-class>com.autumn.servlet.Dispatcherservlet-class> <init-param> <param-name>contextConfigLocationparam-name> <param-value>classpath:spring/Springmvc.xmlparam-value> init-param> <init-param> <param-name>appNameparam-name> <param-value>Bookkeepingparam-value> init-param> <load-on-startup>1load-on-startup> servlet> <servlet-mapping> <servlet-name>bookkeep-webservlet-name> <url-pattern>/url-pattern> servlet-mapping>
Springmvc.xml
xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd"> <context:component-scan base-package="com.autumn.controller" /> <mvc:annotation-driven /> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value=".jsp" /> bean> beans>
Controler测试
@Controller @RequestMapping("/loginController") public class LoginController { @Autowired public LoginService loginService; @RequestMapping("/login/{id}") @ResponseBody //将返回的对象解析成json字符串 public Account login(@PathVariable String id){ Account account = loginService.login(id); return account; //返回json字符串 } @RequestMapping("/loginpage/{id}") public String loginpage(@PathVariable String id){ Account account = loginService.login(id); if (account==null) { return "login"; //返回springmvc中配置的/WEB-INF/jsp/login.jsp }else { return "index"; //返回springmvc中配置的/WEB-INF/jsp/index.jsp } } }
其他方法
不用统一管理的${appName}可以用
jsp中先声明schema://server:port/contextpath/
<% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %>
然后在页面上声明base标签,指定base的url
<base href="<%=basePath%>">
这样的话页面中所有的图片或这里链接都会在schema://server:port/contextpath/下面找