Springboot3.0+spring6.0+JDK17+配置jsp和打war包

由于某些缘故，公司的产品需要升级，但并不希望花费大量时间重写前端代码（原来的就不是前后分离的）。所以虽然spring和springboot都升级为最新的版本，但是依然还是需要支持jsp，并继续用打包为war。

本文中的例子百分百可以执行。

一、概述

升级的理由：

1. java1.8已经用得太久了，就快不是长期优先支持的。毕竟1.8已经用了快10年了，该抛弃了
2. java17，对于性能的提升是明显的，至少有关资料是这么说的，其次是被优先支持的
3. 有关三方技术也渐渐转向jdk17了，例如VSCODE,KAFKA。eclise,sts也不再优先支持1.8
4. 团队需要升级技术，不能老是在1.8中打转
5. spring5.x已经用太久了，而且有不少缺点；原来的诸多配置需要多个xml文件，有点小繁琐。
6. 其它理由
7. 老版本的产品依然继续支持

保持war包理由：

1. 每次更新的时候，可能就是替换几个class和前端页面，所以没有必要每次拷贝几百M的可执行代码
2. 可以更容易调整tomcat的配置，把tomcat的配置从代码中脱离出来。

保持JSP的理由：

1. 暂时不想花费大量时间更新前端页面，前端代码量比较大
2. jsp没有什么大毛病，虽然spring并不是很推荐它。但spring最新版本，以及tomcat最新版本依然支持着。
3. jsp技术，某种意义上，还是比较节约成本的。

本文涉及到几个知识点：

• servlet
• 动态web项目

二、搭建环境

工具和环境：

• 操作系统：windows 11 家庭版
• ide：使用sts即可。本人使用的是Version: 4.14.1.RELEASE版本。
• 容器：tomcat使用最新的10.0.22
• jdk-17
• jquery-3.6.0

本文的例子就是为了升级做准备的，看是否可以比较容易地实现。

大体步骤如下：

1. 使用sts,选择"spring starter project ",之后选择有关组件和选项。其中打包的选项选择"war"，java选择17。注意，java8依然可以支持
2. 修改pom.xml-支持jsp和war包
3. 修改启动代码（不修改也可以）

2.1使用spring starter project创建工程

如果不想使用sts,仅仅是想看看有关配置，可以通过https://start.spring.io/在线生成示例。

以下几个图分别是目录结构图，项目配置信息图。

2.1.1目录结构图

修改后的启动代码（原来例子是两个类，现在合并为一个，不合并也可以）：

package com.hc.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;

@SpringBootApplication
public class SpringbootJspApplication  extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(SpringbootJspApplication.class);
    }

    public static void main(String[] args) {
        SpringApplication.run(SpringbootJspApplication.class, args);
    }

}

这里最关键的是 SpringBootServletInitializer 。

2.1.2项目配置信息-部署

这里的关键是 src/main/webapp目录会映射到/，这个src/main/webapp就是用于存放前端代码的。当然，你要愿意修改为webContent,myhtml之类都可以，只要做好部署映射即可。

其它build path，java compiler略过。

2.1.3项目配置信息-project facets

注意：”dynamic web module"不要选择太老的，选择5.0即可。

这个"dynamic web mouule 5.0“意味着可以支持：

2.1.4项目配置信息-配置web上下文

首先打开"servers"视图，然后添加tomcat10,之后就可以设置上下文：

点击“edit”可以设置上下文。根据项目配置不同和sts的配置不同，有的时候，也可以在项目设置页面中直接设置上下文。

2.2修改pom.xml

这里是关键，以下是本例的pom.xml的内容：

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.0.0-SNAPSHOT</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.hc.demo</groupId>
    <artifactId>springjsp</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>
    <name>springjsp</name>
    <description>Demo project for Spring boot and jsp and war</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
              <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-tomcat</artifactId>
              </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>

        <!-- 以下1~4是为了支持jsp -->
        <!-- 1添加servlet依赖模块 -->
        <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-servlet-api</artifactId>
            <version>10.0.22</version>
        </dependency>
        <!-- 2添加jstl标签库依赖模块 -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
        <!--3添加tomcat依赖模块.-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
        </dependency>
        <!-- 4使用jsp引擎，springboot内置tomcat没有此依赖 -->
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
            <scope>compile</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <!--  配置war包插件    -->
            <plugin>
              <groupId>org.apache.maven.plugins</groupId>
              <artifactId>maven-war-plugin</artifactId>
              <configuration>
                  <warSourceExcludes>src/main/resources/**</warSourceExcludes>
                  <warName>springjsp</warName>
                  <failOnMissingWebXml>false</failOnMissingWebXml>
              </configuration>
            </plugin>
        </plugins>
    </build>
    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <releases>
                <enabled>false</enabled>
            </releases>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
        <pluginRepository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <releases>
                <enabled>false</enabled>
            </releases>
        </pluginRepository>
    </pluginRepositories>

</project>

主要是两个地方要修改：

1. 配置jsp
2. 配置war插件

以上两个修改，分类如以下两个地方：

2.2.1配置jsp

<!-- 以下1~4是为了支持jsp -->
<!-- 1添加servlet依赖模块 -->
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat-servlet-api</artifactId>
    <version>10.0.22</version>
</dependency>
<!-- 2添加jstl标签库依赖模块 -->
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
</dependency>
<!--3添加tomcat依赖模块.-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-tomcat</artifactId>
</dependency>
<!-- 4使用jsp引擎，springboot内置tomcat没有此依赖 -->
<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-jasper</artifactId>
    <scope>compile</scope>
</dependency>

此外，因为这里引入了"spring-boot-starter-tomcat",所以需要把它从“spring-boot-starter-web”移除掉，具体见完整pom.xml。

2.2.2配置war插件

<build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
              <groupId>org.apache.maven.plugins</groupId>
              <artifactId>maven-war-plugin</artifactId>
              <configuration>
                  <warSourceExcludes>src/main/resources/**</warSourceExcludes>
                  <warName>springjsp</warName>
                  <failOnMissingWebXml>false</failOnMissingWebXml>
              </configuration>
            </plugin>
        </plugins>
</build>

三、编写测试代码

3.1编写过滤器

具体过程略，一些列出过滤器代码：

package com.hc.demo.config.filter;

import java.io.IOException;

import org.springframework.web.filter.OncePerRequestFilter;

import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

public class MyFilter extends OncePerRequestFilter {

    @Override
    public void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
            throws ServletException, IOException {
        HttpServletRequest request2 = (HttpServletRequest) request;
        String orgin = request2.getHeader("origin");
        HttpServletResponse res = (HttpServletResponse) response;
        res.addHeader("Access-Control-Allow-Origin", orgin);
        res.addHeader("Access-Control-Allow-Methods", "*");
        res.addHeader("Access-Control-Allow-Headers", "content-type");

        String url=request.getRequestURI().toString();
        System.out.println(url);
        FilterRequest req = new FilterRequest(request);
        filterChain.doFilter(req, response);
    }
}

注：

1.红色部分代码是为了便于观察过滤器是否生效。

2.在jdk17中，“servlet”的顶级包名以“jakarta"开头，这是一个很大的区别。

3.2编写一个接口

具体过程略，先列出控制器代码：

package com.hc.demo.student.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.hc.demo.student.service.StudentService;

@Controller
@RequestMapping(value = "/student")
public class StudentController {
    @Autowired
    private StudentService studentService;

    @RequestMapping(value = "list")
    @ResponseBody
    public Object list() {
        return studentService.queryAll();
    }
}

3.3编写一个jsp页面

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>jsp测试</title>
</head>
<style>
html, body {
    width: 100%;
    height: 100%;
}

.jsp-example {
    display: flex;
    color: red;
    font-size: 32px;
    height: 20%;
    margin-top: 10%;
    margin-bottom:4px;
    line-height: 50%;
    text-align: center;
    background-color: yellow;
    flex-direction: column-reverse;
    flex-wrap: wrap;
    align-content: center;
    justify-content: center;
}
#studentTable{
    border-width: 4px;
    border-style: solid;
    border-color: lightgray;
    width: 400px;
    margin: 0 auto;
}
tr,td,th{
    border-width: 1px;
    border-style: solid;
    border-color: lightgray;
    text-align:center;
}
</style>

<body>
    <div class="jsp-example" id="dDivExample"></div>
    <div id="dDivStudent">
        <table id="studentTable">
            <thead>
                <tr>
                    <th>姓名</th>
                    <th>性别</th>
                </tr>
            </thead>
            <tbody id="studentTableBody">
            </tbody>
        </table>

    </div>
</body>
<script src="/springjsp/plugin/jquery/jquery-3.6.0.min.js"></script>
<script>
    $(function () {
        document.getElementById("dDivExample").innerText="这是一个springboot3.0+jdk17+jsp+war的测试";
        showStudent();
    });
    function showStudent(){
        $.ajax({
            url: '/springjsp/student/list',
            type: 'POST',
            dataType: 'json',
            async: true,
            success: function (rs, status, xhr) {
                let htmlText="";
                for(let i=0,len=rs.length;i<len;i++){
                    htmlText+="<tr><td>"+rs[i].NAME+"</td><td>"+rs[i].sex+"</td></tr>\n"
                }
                let _body=document.getElementById("studentTableBody");
                _body.innerHTML=htmlText;
            },
            error: function (rs) {
              alert("失败!");
            }
          });
    }
    </script>

</html>

3.4配置wms

package com.hc.demo.config;

import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import com.hc.demo.config.filter.MyFilter;

@Configuration
public class MyWMS extends WebMvcConfigurationSupport {

    @Override
    protected void addInterceptors(InterceptorRegistry registry) {
    }

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        // 为根增加默认的 映射，指向index.html
        registry.addViewController("/").setViewName("index");
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/**").addResourceLocations("classpath:/static/")
                .addResourceLocations("classpath:/temploates/");
        registry.addResourceHandler("/plugin/**").addResourceLocations("/plugin/");
        super.addResourceHandlers(registry);
    }

    /**
     * 注册过滤器
     * @return
     */
    @Bean
    public FilterRegistrationBean<MyFilter> registerAuthFilter() {
        FilterRegistrationBean<MyFilter> registration = new FilterRegistrationBean<>();
        MyFilter  filter=new MyFilter();
        registration.setFilter(filter);
        registration.addUrlPatterns("/*");
        registration.setName("authFilter");
        registration.setOrder(1);  //值越小，Filter越靠前。
        return registration;
    }
}

上文红色部分是需要关注的地方，分别设置根url,静态资源和过滤器。

注意：这是springboot3.0+spring6.0和以往的一个大区别：以前的版本过滤器设置需要新建一个web.xml，并在web.xml中配置过滤器。但是现在不需要了，这个无疑非常方便，非常合理。

当然这主要是因为 5.0的web moudule可以避免配置web.xml(这个有点烦人）。

四、打包

新建debug Configurations,如下图：

”jre“部分，”VM arguments"设置参数"-Dmaven.test.skip=true",避免无谓的测试。

其它设置大概如下：

• goals- clean compile package,这是清理、编译，最后打包
• jdk-17
• 字符集-utf-8
• jrebel 关闭

之后，点击“debug”，则运行如下：

[INFO] Scanning for projects...
[INFO]
[INFO] -----------------------< com.hc.demo:springjsp >------------------------
[INFO] Building springjsp 0.0.1-SNAPSHOT
[INFO] --------------------------------[ war ]---------------------------------
[INFO] Downloading from spring-milestones: https://repo.spring.io/milestone/org/apache/maven/plugins/maven-clean-plugin/3.2.0/maven-clean-plugin-3.2.0.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plugin/3.2.0/maven-clean-plugin-3.2.0.pom
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plugin/3.2.0/maven-clean-plugin-3.2.0.pom (5.3 kB at 1.5 kB/s)
[INFO] Downloading from spring-milestones: https://repo.spring.io/milestone/org/apache/maven/plugins/maven-plugins/35/maven-plugins-35.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-plugins/35/maven-plugins-35.pom
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-plugins/35/maven-plugins-35.pom (9.9 kB at 1.8 kB/s)
[INFO] Downloading from spring-milestones: https://repo.spring.io/milestone/org/apache/maven/maven-parent/35/maven-parent-35.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/maven-parent/35/maven-parent-35.pom
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/org/apache/maven/maven-parent/35/maven-parent-35.pom (45 kB at 4.2 kB/s)
[INFO] Downloading from spring-milestones: https://repo.spring.io/milestone/org/apache/apache/25/apache-25.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/apache/apache/25/apache-25.pom
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/org/apache/apache/25/apache-25.pom (21 kB at 5.5 kB/s)
[INFO]
[INFO] --- maven-clean-plugin:3.2.0:clean (default-clean) @ springjsp ---
[INFO] Downloading from spring-milestones: https://repo.spring.io/milestone/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar (169 kB at 7.0 kB/s)
[INFO] Deleting E:\codes-java\git\learning\gitee\springjsp\target
[INFO]
[INFO] --- maven-resources-plugin:3.2.0:resources (default-resources) @ springjsp ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Using 'UTF-8' encoding to copy filtered properties files.
[INFO] Copying 1 resource
[INFO] Copying 1 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.10.1:compile (default-compile) @ springjsp ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 7 source files to E:\codes-java\git\learning\gitee\springjsp\target\classes
[INFO]
[INFO] --- maven-resources-plugin:3.2.0:resources (default-resources) @ springjsp ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Using 'UTF-8' encoding to copy filtered properties files.
[INFO] Copying 1 resource
[INFO] Copying 1 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.10.1:compile (default-compile) @ springjsp ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 7 source files to E:\codes-java\git\learning\gitee\springjsp\target\classes
[INFO]
[INFO] --- maven-resources-plugin:3.2.0:testResources (default-testResources) @ springjsp ---
[INFO] Not copying test resources
[INFO]
[INFO] --- maven-compiler-plugin:3.10.1:testCompile (default-testCompile) @ springjsp ---
[INFO] Not compiling test sources
[INFO]
[INFO] --- maven-surefire-plugin:2.22.2:test (default-test) @ springjsp ---
[INFO] Tests are skipped.
[INFO]
[INFO] --- maven-war-plugin:3.3.2:war (default-war) @ springjsp ---
[INFO] Packaging webapp
[INFO] Assembling webapp [springjsp] in [E:\codes-java\git\learning\gitee\springjsp\target\springjsp-0.0.1-SNAPSHOT]
[INFO] Processing war project
[INFO] Copying webapp resources [E:\codes-java\git\learning\gitee\springjsp\src\main\webapp]
[INFO] Building war: E:\codes-java\git\learning\gitee\springjsp\target\springjsp.war
[INFO]
[INFO] --- spring-boot-maven-plugin:3.0.0-SNAPSHOT:repackage (repackage) @ springjsp ---
[INFO] Downloading from spring-snapshots: https://repo.spring.io/snapshot/org/springframework/boot/spring-boot-buildpack-platform/3.0.0-SNAPSHOT/maven-metadata.xml
[INFO] Downloaded from spring-snapshots: https://repo.spring.io/snapshot/org/springframework/boot/spring-boot-buildpack-platform/3.0.0-SNAPSHOT/maven-metadata.xml (2.4 kB at 1.5 kB/s)
[INFO] Downloading from spring-snapshots: https://repo.spring.io/snapshot/org/springframework/boot/spring-boot-buildpack-platform/3.0.0-SNAPSHOT/spring-boot-buildpack-platform-3.0.0-20220626.095848-608.pom
[INFO] Downloaded from spring-snapshots: https://repo.spring.io/snapshot/org/springframework/boot/spring-boot-buildpack-platform/3.0.0-SNAPSHOT/spring-boot-buildpack-platform-3.0.0-20220626.095848-608.pom (3.4 kB at 2.5 kB/s)
[INFO] Downloading from spring-milestones: https://repo.spring.io/milestone/net/java/dev/jna/jna-platform/5.7.0/jna-platform-5.7.0.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/net/java/dev/jna/jna-platform/5.7.0/jna-platform-5.7.0.pom
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/net/java/dev/jna/jna-platform/5.7.0/jna-platform-5.7.0.pom (0 B at 0 B/s)
[INFO] Downloading from spring-milestones: https://repo.spring.io/milestone/net/java/dev/jna/jna/5.7.0/jna-5.7.0.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/net/java/dev/jna/jna/5.7.0/jna-5.7.0.pom
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/net/java/dev/jna/jna/5.7.0/jna-5.7.0.pom (0 B at 0 B/s)
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[INFO] Downloading from spring-milestones: https://repo.spring.io/milestone/org/antlr/antlr4-runtime/4.7.2/antlr4-runtime-4.7.2.pom
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[INFO] Replacing main artifact with repackaged archive
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  01:31 min
[INFO] Finished at: 2022-07-04T22:06:59+08:00
[INFO] ------------------------------------------------------------------------

五、测试

5.1安装和配置tomcat10

安装过程略。

主要是设置JAVA_HOME和日志编码。

5.1.1设置JAVA_HOME

打开TOMCAT10的bin\catalina.bat,在”setlocal"下插入一句：

set JAVA_HOME=D:\soft\develop-tool\java\jdk-17.0.3.1

5.1.2设置日志编码

打开tomcat10\conf\logging.properties，把所有的“UTF-8”修改为“GBK"即可。

5.2部署war包

把前面打包的E:\codes-java\git\learning\gitee\springjsp\target\springjsp.war复制到tomcat10\webapps下。

5.3运行war包

在cmd下，运行tomcat10下的startup.bat,当然之前，需要先打开Mysql。

控制台输出如下：

看起来很正常，默认8080已经打开。

切换到浏览器，输入:http://localhost:8080/springjsp/

结果如下图：

运行 正常。

六、小结

整个过程很顺利，麻烦的地方仅仅是配置pom.xml和在wms中配置静态资源。

和以前版本比起来，的确方便了不少。例如不要配置web.xml（实际上web module>=3.1即可），这样可以节省servlet,filter之类的配置。