[Java知识库]Spring-MVC简单测试

1.环境配置

1.maven-pom.xml
<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.example</groupId>
  <artifactId>GranduationDesignment</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>GranduationDesignment Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

  <dependencies>
    <!--  测试   -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.13.1</version>
      <scope>test</scope>
    </dependency>

    <!--日志-->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.7.21</version>
    </dependency>

    <!--J2EE-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
    </dependency>

    <!--  jsp   -->
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.2</version>
    </dependency>

    <!--  模板语言   -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

    <!--mysql驱动包-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.35</version>
    </dependency>

    <!--springframework-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>5.2.3.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.2.3.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.2.3.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.2.3.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.2.3.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.8.9</version>
    </dependency>
    <!--其他需要的包-->
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
      <version>3.4</version>
    </dependency>
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.1</version>
    </dependency>
  </dependencies>

</project>

1.在WEB-INF目录下的:  web.xml


	<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         version="3.0">
  <display-name>GraduationDesign</display-name>

  <!-- 部署 DispatcherServlet -->
  <servlet>
    <servlet-name>GraduationServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!-- 表示容器再启动时立即加载servlet -->
    <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>GraduationServlet</servlet-name>
    <!-- 处理所有URL -->
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>





2.在WEB-INF目录下的:  GraduationServlet-servlet.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:mvc="http://www.springframework.org/schema/mvc"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="
        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.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    

    <!--      设置spring自动化扫描注解范围  -->
    <context:component-scan base-package="com.vodka" />

    <!--  viewResolver   -->
    <bean id="viewResolever" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!--     前缀   -->
        <property name="prefix" value="/WEB-INF/WebPage/"></property>
        <!--     后缀   -->
        <property name="suffix" value=".jsp"></property>
    </bean>
</beans>

2.目录结构

3.请求处理类

package com.vodka.Controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpSession;
import java.util.ArrayList;
import java.util.List;

/**
 * @author Vodka
 * @date 2022/03//10:34
 */
@Controller
public class RequestMappingInstances {
    //处理登录请求，带指定参数的请求，才可以访问  Login() 方法， name="xxx"，是注释
    @RequestMapping(value="/Login",name = "登录处理")
    public ModelAndView Login(){
        ModelAndView modelAndView = new ModelAndView();
        List<String> MyString = new ArrayList<>();
        MyString.add("Vodka");
        MyString.add("Jucy");
        MyString.add("Lora");
        MyString.add("Jack");
        modelAndView.addObject("NameList",MyString);   //消息设置
        modelAndView.setViewName("Login");  //设置视图 (即跳转地址)
        return  modelAndView;  //处理相关请求后，返回消息和视图模型
    }

    //处理注册请求,consumes指定处理请求提交的内容类型， produces用于指定返回的内容类型
    @RequestMapping(value="/Register" ,name = "注册处理")
    public  String Register(HttpSession httpSession){
        httpSession.setAttribute("name","Vodka");
        return "Register"; //处理相关请求后，返回页面名称，因为在Servlet配置里，已经配置好前缀和后缀，所以直接写名称
    }
}

4.页面

1.index.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="utf-8" %>
<%--jstl核心库--%>
<%@ taglib prefix="v" uri="http://java.sun.com/jsp/jstl/core"%>
<html>
<body>
<a href="${pageContext.request.contextPath}/Login">登录界面</a>
<a href="${pageContext.request.contextPath}/Register">注册界面</a>
</body>
</html>



2.Login.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="utf-8" %>
<%--引入的jstl核心库--%>
<%@ taglib prefix="v" uri="http://java.sun.com/jsp/jstl/core"%>
<html>
<head>
    <title>登录界面</title>
</head>
<body>
    <v:forEach items="${NameList}" var="name">
        <h1>欢迎${name}来到登录界面</h1>
    </v:forEach>

</body>
</html>



3.Register.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="UTF-8" %>
<%--引入的jstl核心库--%>
<%@ taglib prefix="v" uri="http://java.sun.com/jsp/jstl/core"%>
<html>
<head>
    <title>注册界面</title>
</head>
<body>
     <h1>欢迎${sessionScope.get("name")}来到注册界面</h1>
</body>
</html>

5.效果图