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Spring MVC文件配置以及参数传递示例详解

作者：朱怀昌　　发布时间：2023-06-03 23:29:48　

标签：springmvc,文件,配置

web.xml文件配置

创建好一个SpringMVC项目后，需要在需要在WB-INF文件夹下配置web.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">

<display-name>SpringMVCdemo</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>


<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:springMVC.xml</param-value>
</context-param>

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<servlet>
<servlet-name>dispatcher</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>

<url-pattern>*.do</url-pattern>
</servlet-mapping>


<filter>
<filter-name>characterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>

springMVC.xml文件配置

在src文件夹下创建springMVC.xml文件

<?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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">


<context:component-scan base-package="cn.zhc.*"></context:component-scan>


<mvc:annotation-driven></mvc:annotation-driven>

<mvc:default-servlet-handler></mvc:default-servlet-handler>


<bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">

<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>

第一个SpringMVC实例

index.jsp

<％@ page contentType="text/html;charset=UTF-8" language="java" ％>
<html>
<head>
<title>$Title$</title>
</head>
<body>
哈哈哈哈哈
</body>
</html>

测试类：

package cn.zhc.test;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class Test {
@RequestMapping("/hello.do")
public String hello(){
System.out.println("hhhhhhhhhhhh");
return "index";
}
}

在项目运行后，在前端页面路径后输入/hello.do，控制台会输出hhhhhhhhhhhh

参数传递

view到controller 四种方式

@RequestMapping("/hello.do")
public String hello(String name){
//路径后加?name= 不加会传null
System.out.println(name);
return "index";
}

//Controller方法方法中参数前加@RequestParam进行直接入参

@RequestMapping("/hello.do")
public String hello(@RequestParam String name){
//不传参会请求错误400
System.out.println(name);
return "index";
}

@RequestMapping("/hello.do")
public String hello(@RequestParam(value = "name" ,required = false) String name){
//required是否需要传参
System.out.println(name);
return "index";
}

@RequestMapping(value = "/hello.do",method = RequestMethod.GET,params = "name")
public String hello(String name){
//不传参会请求错误400
System.out.println(name);
return "index";
}

controller到view 三种方式

@RequestMapping("/hello.do")
public ModelAndView hello(){
ModelAndView mv = new ModelAndView();
mv.addObject("name","zhu");//添加模型数据
mv.setViewName("index");//设置视图名称
return mv;
}

@RequestMapping("/hello.do")
public String hello(Model model){
model.addAttribute("name","huai");
model.addAttribute("chang");
//在model中若不指定key，则使用默认对象的类型作为key
return "index";
}

@RequestMapping("/hello.do")
public String hello(Map<String,Object> map){
map.put("name","lisa");
return "index";
}

总结

来源：https://blog.csdn.net/qq_43928469/article/details/115048026

投稿

Spring MVC文件配置以及参数传递示例详解

web.xml文件配置

springMVC.xml文件配置

第一个SpringMVC实例

参数传递

总结

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