前端jsp页面script引入url项目名使用${appName}

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
}
}

<!-- springmvc的前端控制器 -->
<servlet>
<servlet-name>bookkeep-web</servlet-name>
<servlet-class>com.autumn.servlet.Dispatcher</servlet-class> <!--原来为org.springframework.web.servlet.DispatcherServlet-->
<!-- contextConfigLocation不是必须的， 如果不配置contextConfigLocation， springmvc的配置文件默认在：WEB-INF/servlet的name+"-servlet.xml" -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/Springmvc.xml</param-value>
</init-param>
<init-param>
<param-name>appName</param-name>
<param-value>Bookkeeping</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>bookkeep-web</servlet-name>
<!-- 拦截所有请求jsp除外 -->
<url-pattern>/</url-pattern>
</servlet-mapping>

<?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">
<!-- 扫描controller驱动 -->
<context:component-scan base-package="com.autumn.controller" />
<!-- 注解驱动 -->
<mvc:annotation-driven /> <!--controller返回的视图解析器,例如返回login，实际解析为http://ip:port/projectName/WEB-INF/jsp/login.jsp-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>

@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
}
}
}

<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<base href="<%=basePath%>">