Spring In Action 5 学习笔记 chapter1 拓展_spring into action 第5版-优快云博客

本文链接：https://blog.youkuaiyun.com/wangdonghao137/article/details/126503624

接上文，使用方式二续写IDEA通过选择Maven手动配置搭建一个Spring boot项目。

上一文方式一：IDEA内选择Spring Initializr

环境

win7x64

idea 2018.3

maven 3.3.9

spring 4.0.4

IDEA搭建一个Spring boot项目

方式二：IDEA内选择Maven

简要步骤

IDEA ->New Project->Maven->选择jdk，不选择Create from archetype；点击Next，填入groupid等
IDEA创建工程成功后右下角弹窗提示“Maven projects need to be imported”点击【Enable Auto-Import】

双击pom.xml，修改前文件内容如下

<?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>com.wdh.test</groupId>
    <artifactId>SpringBootByMavenDemo1</artifactId>
    <version>1.0-SNAPSHOT</version>


</project>

特别说明:pom.xml中的springboot依赖项很难记，怎么办，打开浏览器输入https://start.spring.io/，输入相关信息生成一个demo，点击页面explorer按钮，查看生成项目中的pom.xml文件内容，将parent节、dependencies节拷贝过来修改；
注意在访问生成示例代码时，如果因网络问题无法访问https://start.spring.io/，则可访问https://start.aliyun.com/bootstrap.html

修改后的pom.xml文件内容如下（增加了Thymeleaf）

<?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>com.wdh.test</groupId>
    <artifactId>SpringBootByMavenDemo1</artifactId>
    <version>1.0-SNAPSHOT</version>

    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.7.3</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </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>
        </plugins>
    </build>


</project>

在src\main\resources目录下创建application.properties文件，文件内容增加如下配置,增加了Thymeleaf相关配置

# 应用名称
spring.application.name=SpringBootByMavenDemo1
# 应用服务 WEB 访问端口
server.port=8081

# THYMELEAF (ThymeleafAutoConfiguration)
# 开启模板缓存（默认值： true ）
spring.thymeleaf.cache=true
# 检查模板是否存在，然后再呈现
spring.thymeleaf.check-template=true
# 检查模板位置是否正确（默认值 :true ）
spring.thymeleaf.check-template-location=true
#Content-Type 的值（默认值： text/html ）
spring.thymeleaf.content-type=text/html
# 开启 MVC Thymeleaf 视图解析（默认值： true ）
spring.thymeleaf.enabled=true
# 模板编码
spring.thymeleaf.encoding=UTF-8
# 要被排除在解析之外的视图名称列表，⽤逗号分隔
spring.thymeleaf.excluded-view-names=
# 要运⽤于模板之上的模板模式。另⻅ StandardTemplate-ModeHandlers( 默认值： HTML5)
spring.thymeleaf.mode=HTML5
# 在构建 URL 时添加到视图名称前的前缀（默认值： classpath:/templates/ ）
spring.thymeleaf.prefix=classpath:/templates/
# 在构建 URL 时添加到视图名称后的后缀（默认值： .html ）
spring.thymeleaf.suffix=.html

在src\main\java\下新建包com.wdh.test.SpringBootByMavenDemo1

在src\main\java\com\wdh\test\SpringBootByMavenDemo1\路径下新建SpringBootByMavenDemo1Application.java，代码如下

package com.wdh.test.SpringBootByMavenDemo1;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * @author WangDH
 * @create 2022-08-24 14:59
 */

@SpringBootApplication
public class SpringBootByMavenDemo1Application {

    public static void main(String[] args) {
        SpringApplication.run(SpringBootByMavenDemo1Application.class, args);
    }

}

测试单元下的代码创建，在src\test\java下新建包com.wdh.test.SpringBootByMavenDemo1
注意上述路径是src\test\java

在src\test\java\com\wdh\test\SpringBootByMavenDemo1\下新建SpringBootByMavenDemo1Tests.java，参考https://start.spring.io/中DemoApplicationTests .java后修改SpringBootByMavenDemo1Tests.java内容如下

package com.wdh.test.SpringBootByMavenDemo1;

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;

/**
 * @author WangDH
 * @create 2022-08-24 15:05
 */
@SpringBootTest
class SpringBootByMavenDemo1Tests {

    @Test
    void contextLoads() {
    }
}

新建前端页面，步骤如下
src\main\resources\下新建templates文件夹，用来放置html页面
src\main\resources\下新建static文件夹，用来放置静态资源，例如图片等
启动运行，在SpringBootByMavenDemo1Application.java中SpringBootByMavenDemo1Application右键点击run启动运行，console控制台打印如下日志

"C:\Program Files\Java\jdk1.8.0_111\bin\java.exe" -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true "-javaagent:D:\JavaDevEnv\JetBrains\IntelliJ IDEA 2018.3.6\lib\idea_rt.jar=3594:D:\JavaDevEnv\JetBrains\IntelliJ IDEA 2018.3.6\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_111\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_111\jre\lib\rt.jar;D:\JavaWorkspace\IdeaProjects\SpringInAction\SpringBootByMavenDemo1\target\classes;D:\JavaDevEnv\maven_repository\org\springframework\boot\spring-boot-starter-thymeleaf\2.7.3\spring-boot-starter-thymeleaf-2.7.3.jar;D:\JavaDevEnv\maven_repository\org\springframework\boot\spring-boot-starter\2.7.3\spring-boot-starter-2.7.3.jar;D:\JavaDevEnv\maven_repository\org\springframework\boot\spring-boot\2.7.3\spring-boot-2.7.3.jar;D:\JavaDevEnv\maven_repository\org\springframework\boot\spring-boot-autoconfigure\2.7.3\spring-boot-autoconfigure-2.7.3.jar;D:\JavaDevEnv\maven_repository\org\springframework\boot\spring-boot-starter-logging\2.7.3\spring-boot-starter-logging-2.7.3.jar;D:\JavaDevEnv\maven_repository\ch\qos\logback\logback-classic\1.2.11\logback-classic-1.2.11.jar;D:\JavaDevEnv\maven_repository\ch\qos\logback\logback-core\1.2.11\logback-core-1.2.11.jar;D:\JavaDevEnv\maven_repository\org\apache\logging\log4j\log4j-to-slf4j\2.17.2\log4j-to-slf4j-2.17.2.jar;D:\JavaDevEnv\maven_repository\org\apache\logging\log4j\log4j-api\2.17.2\log4j-api-2.17.2.jar;D:\JavaDevEnv\maven_repository\org\slf4j\jul-to-slf4j\1.7.36\jul-to-slf4j-1.7.36.jar;D:\JavaDevEnv\maven_repository\jakarta\annotation\jakarta.annotation-api\1.3.5\jakarta.annotation-api-1.3.5.jar;D:\JavaDevEnv\maven_repository\org\yaml\snakeyaml\1.30\snakeyaml-1.30.jar;D:\JavaDevEnv\maven_repository\org\thymeleaf\thymeleaf-spring5\3.0.15.RELEASE\thymeleaf-spring5-3.0.15.RELEASE.jar;D:\JavaDevEnv\maven_repository\org\thymeleaf\thymeleaf\3.0.15.RELEASE\thymeleaf-3.0.15.RELEASE.jar;D:\JavaDevEnv\maven_repository\org\attoparser\attoparser\2.0.5.RELEASE\attoparser-2.0.5.RELEASE.jar;D:\JavaDevEnv\maven_repository\org\unbescape\unbescape\1.1.6.RELEASE\unbescape-1.1.6.RELEASE.jar;D:\JavaDevEnv\maven_repository\org\slf4j\slf4j-api\1.7.36\slf4j-api-1.7.36.jar;D:\JavaDevEnv\maven_repository\org\thymeleaf\extras\thymeleaf-extras-java8time\3.0.4.RELEASE\thymeleaf-extras-java8time-3.0.4.RELEASE.jar;D:\JavaDevEnv\maven_repository\org\springframework\boot\spring-boot-starter-web\2.7.3\spring-boot-starter-web-2.7.3.jar;D:\JavaDevEnv\maven_repository\org\springframework\boot\spring-boot-starter-json\2.7.3\spring-boot-starter-json-2.7.3.jar;D:\JavaDevEnv\maven_repository\com\fasterxml\jackson\core\jackson-databind\2.13.3\jackson-databind-2.13.3.jar;D:\JavaDevEnv\maven_repository\com\fasterxml\jackson\core\jackson-annotations\2.13.3\jackson-annotations-2.13.3.jar;D:\JavaDevEnv\maven_repository\com\fasterxml\jackson\core\jackson-core\2.13.3\jackson-core-2.13.3.jar;D:\JavaDevEnv\maven_repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.13.3\jackson-datatype-jdk8-2.13.3.jar;D:\JavaDevEnv\maven_repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.13.3\jackson-datatype-jsr310-2.13.3.jar;D:\JavaDevEnv\maven_repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.13.3\jackson-module-parameter-names-2.13.3.jar;D:\JavaDevEnv\maven_repository\org\springframework\boot\spring-boot-starter-tomcat\2.7.3\spring-boot-starter-tomcat-2.7.3.jar;D:\JavaDevEnv\maven_repository\org\apache\tomcat\embed\tomcat-embed-core\9.0.65\tomcat-embed-core-9.0.65.jar;D:\JavaDevEnv\maven_repository\org\apache\tomcat\embed\tomcat-embed-el\9.0.65\tomcat-embed-el-9.0.65.jar;D:\JavaDevEnv\maven_repository\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.65\tomcat-embed-websocket-9.0.65.jar;D:\JavaDevEnv\maven_repository\org\springframework\spring-web\5.3.22\spring-web-5.3.22.jar;D:\JavaDevEnv\maven_repository\org\springframework\spring-beans\5.3.22\spring-beans-5.3.22.jar;D:\JavaDevEnv\maven_repository\org\springframework\spring-webmvc\5.3.22\spring-webmvc-5.3.22.jar;D:\JavaDevEnv\maven_repository\org\springframework\spring-aop\5.3.22\spring-aop-5.3.22.jar;D:\JavaDevEnv\maven_repository\org\springframework\spring-context\5.3.22\spring-context-5.3.22.jar;D:\JavaDevEnv\maven_repository\org\springframework\spring-expression\5.3.22\spring-expression-5.3.22.jar;D:\JavaDevEnv\maven_repository\org\springframework\spring-core\5.3.22\spring-core-5.3.22.jar;D:\JavaDevEnv\maven_repository\org\springframework\spring-jcl\5.3.22\spring-jcl-5.3.22.jar" com.wdh.test.SpringBootByMavenDemo1.SpringBootByMavenDemo1Application

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v2.7.3)

2022-08-24 15:42:15.381  INFO 4600 --- [           main] .w.t.S.SpringBootByMavenDemo1Application : Starting SpringBootByMavenDemo1Application using Java 1.8.0_111 on 14JPYI7CBESDNFK with PID 4600 (D:\JavaWorkspace\IdeaProjects\SpringInAction\SpringBootByMavenDemo1\target\classes started by Administrator in D:\JavaWorkspace\IdeaProjects\SpringInAction\SpringBootByMavenDemo1)
2022-08-24 15:42:15.384  INFO 4600 --- [           main] .w.t.S.SpringBootByMavenDemo1Application : No active profile set, falling back to 1 default profile: "default"
2022-08-24 15:42:16.274  INFO 4600 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8081 (http)
2022-08-24 15:42:16.283  INFO 4600 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2022-08-24 15:42:16.284  INFO 4600 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.65]
2022-08-24 15:42:16.391  INFO 4600 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2022-08-24 15:42:16.392  INFO 4600 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 916 ms
2022-08-24 15:42:16.630  WARN 4600 --- [           main] org.thymeleaf.templatemode.TemplateMode  : [THYMELEAF][main] Template Mode 'HTML5' is deprecated. Using Template Mode 'HTML' instead.
2022-08-24 15:42:16.682  INFO 4600 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8081 (http) with context path ''
2022-08-24 15:42:16.690  INFO 4600 --- [           main] .w.t.S.SpringBootByMavenDemo1Application : Started SpringBootByMavenDemo1Application in 1.675 seconds (JVM running for 2.304)
2022-08-24 15:42:19.978  INFO 4600 --- [nio-8081-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring DispatcherServlet 'dispatcherServlet'
2022-08-24 15:42:19.978  INFO 4600 --- [nio-8081-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2022-08-24 15:42:19.980  INFO 4600 --- [nio-8081-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 2 ms