【Spring in action】SpringMVC基于xml及java配置的简单运用
2017-09-22 16:28
796 查看
一、SpringMVC使用步骤
1、DispatchServlet分发器2、查询处理器映射handler mapping
3、DispatchServlet分发器将请求发送给选中的Controller控制器
4、Controller将模型数据和视图名发送会DispatchServlet分发器
5、视图解析器viewResolver匹配特定的试图实现，例如JSP
二、原有的老套路，配置web.xml的方式：
1、web.xml配置DispatchServlet
<?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>SpringMVC</display-name> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> </web-app>
2、springmvc-servlet.xml配置handler mapping ，视图解析器viewResolver，Controller控制器
<?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:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd"> <!-- 配置handlerMapping --> <bean class="org.springframework.web.servlet.mvc.support.ControllerBeanNameHandlerMapping"></bean> <!-- 配置视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 前缀 :说明如果直接放在web-inf下，不需要加前缀--> <property name="prefix" value="WEB-INF/view/"></property> <!-- 后缀 ： --> <property name="suffix" value=".jsp"></property> </bean> <!-- 配置controller --> <bean name="/hello.do" class="Controller.HelloController"></bean> </beans>
3、HelloController
package Controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;
public class HelloController extends AbstractController {
@Override
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response)
throws Exception {
// TODO Auto-generated method stub
String hello = request.getParameter("hello");
System.out.println("-----"+hello);
//返回到index页面
ModelAndView mav = new ModelAndView("index");
mav.addObject("helloworld", "hello"+hello);
return mav;
}
}4、在指定位置WEB-INF/view/新建index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>${helloworld}</h1>
</body>
</html>5、写一个hello.jsp给Controller提供入参：
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <form action="hello.do" method="post"> hello:<input type="text" name="hello"> <input type="submit" value="提交"> </form> </body> </html>
6.测试一下/SpringMVC/hello.jsp链接: 输入faith得到结果：hellofaith
三、通过Java配置SpringMVC：
1.配置DispatcherServlet，代替web.xml
package spittr.config;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
//配置DispatcherServlet
public class SpittrWebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer{
@Override
protected Class<?>[] getRootConfigClasses() {
// TODO Auto-generated method stub
return new Class<?>[]{RootConfig.class};
}
@Override
protected Class<?>[] getServletConfigClasses() {
// TODO Auto-generated method stub
return new Class<?>[]{WebConfig.class};
}
@Override
protected String[] getServletMappings() {
// TODO 将dispatcherServlet映射到"/"
return new String[]{"/"};
}
}2、配置一个RootConfig（该类的功能暂时可忽略）
package spittr.config;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.ComponentScan.Filter;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
@Configuration
@ComponentScan(basePackages={"spittr"},excludeFilters={@Filter(type=FilterType.ANNOTATION,value=EnableWebMvc.class)})
public class RootConfig {
}3、配置WebConfig：用来代替springmvc-servlet.xml
package spittr.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
@Configuration
@EnableWebMvc
@ComponentScan("spittr.web")
public class WebConfig extends WebMvcConfigurerAdapter{
@Bean
public ViewResolver viewResolver(){
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".jsp");
resolver.setExposeContextBeansAsAttributes(true);
return resolver;
}
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
// TODO Auto-generated method stub
configurer.enable();
}
}4、写一个Controller（HomeController）放在spittr.web目录下，并通过注解@Controller：
package spittr.web;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
public class HomeController {
@RequestMapping(value="/",method=RequestMethod.GET)
public String home() {
return "home";
}
}5、上面return home，会去视图解析器配置的路径resolver.setPrefix("/WEB-INF/views/")下找。写一个符合条件的home.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> Welcome,hello World </body> </html>
6、目录结构及导包一览：
内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理 
相关文章推荐
- 【Spring in action】基于Java配置SpringMVC中使用Spring及SpringMVC各种请求详解
- 【Spring in action】基于xml配置：在SpringMVC中使用Spring容器
- SPRING IN ACTION 第4版笔记-第二章WIRING BEANS-008-在XML配置文件中引入JAVA配置文件 <import> 、<bean>
- SPRING IN ACTION 第4版笔记-第七章Advanced Spring MVC-002- 在xml中引用Java配置文件，声明DispatcherServlet、ContextLoaderListener
- Spring in Action（五）：基于Java Config的SpringMVC
- SPRING IN ACTION 第4版笔记-第二章WIRING BEANS-008-在Java配置文件中引入xml配置文件@Import、@ImportResource
- 【spring in action 学习--springMVC搭建】在不使用web.xml的情况下，配置Srping MVC工程
- Spring In Action（二）：基于XML配置装配bean
- SPRING IN ACTION 第4版笔记-第四章ASPECT-ORIENTED SPRING-009-带参数的ADVICE2 配置文件为XML
- Spring in Action : MVC 配置（JAVA方式）
- Spring in Action : MVC 配置（JAVA方式）
- Spring 基于XML配置 基于注解配置 基于JAVA类配置比较以及适用场景
- Spring web基于javaconfig类配置 的web.XML配置
- Spring aop 简单示例——基于XML配置和基于注解配置
- （笔记）Spring实战_最小化Spring XML配置（4）_使用Spring基于Java的配置
- 【Java.Spring.Core】【IoC】基于注解的Bean装配（非XML配置）
- Spring in Action : MVC 配置（JAVA方式）
- Spring入门（8）-基于Java配置而不是XML
- Springmvc案例1----基于spring2.5的采用xml配置
- 【Spring】【笔记】《Spring In Action》第3章 简化XML配置