Day38-创建Maven项目、Tomcat配置

本文介绍如何在IntelliJ IDEA中创建Maven Web项目并配置Tomcat服务器,包括项目创建流程、Maven配置详解及常见问题解决方法。

Day38-创建Maven项目、Tomcat配置

在idea中使用Maven

  1. 创建一个MavenWeb项目

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  1. Next

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  1. 创建项目成功

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  1. Maven导入成功

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  1. IDEA的Maven配置

​ 注意:IDEA项目创建成功后,看一眼Maven配置

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会有一个错误

创建一个普通的Maven项目

  1. 创建

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  1. next

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  1. 创建成功

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这个只有在web应用下才会有

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标记文件夹功能

  • 第一种标记方法
  1. 新建两个文件夹

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  1. 标记java文件夹为源码目录,resources为资源目录

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  • 第二种标记方法
  1. File》Project Structure》Modules

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在IDEA中配置Tomcat

  1. 第一步

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  1. 第二步

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  1. 第三步

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  1. 第四步

解决警告问题:

为什么会有这个问题:我们访问一个网站,需要指定一个文件夹名字;(必须要配置)

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  1. 启动Tomcat

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  1. 启动成功

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pom文件

pom.xml是Maven的核心配置

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<?xml version="1.0" encoding="UTF-8" ?>
<!--Maven版本和头文件-->
<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <!--这里就是我们刚才配置的GAV-->
  <groupId>com.xiaozhao01</groupId>
  <artifactId>javaweb-01-maven</artifactId>
  <!--Package:项目的打包方式
  jar:java应用
  war:javaweb应用
  -->
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>

  <!--配置-->
  <properties>
    <!--项目的默认构建编码-->
    <project.buildsourceEncoding>UTF-8</project.buildsourceEncoding>
    <!--编码版本-->
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>
  <!--项目依赖-->
  <dependencies>
    <!--具体依赖的jar包配置文件-->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
    </dependency>
    <!--Maven的高级之处在于:他会帮你导入这个jar包所依赖的其他jar-->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.3.18</version>
    </dependency>

  </dependencies>
  <!--项目构建用的东西-->
  <build>
    <finalName>javaweb-01-maven</finalName>
  </build>
</project>

Maven的高级之处在于:他会帮你导入这个jar包所依赖的其他jar

maven由于他的约定大于配置,我们之后可能遇到我们写的配置文件,无法被导出或者生效的问题,解决方案:

    <!--在build中配置resources,来防止我们资源导出失败的问题-->
    <build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <excludes>
                    <exclude>**/*.properties</exclude>
                    <exclude>**/*.xml</exclude>
                </excludes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
    </build>

IDEA操作

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E:\JDK-22\bin\java.exe "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA 2024.1\lib\idea_rt.jar=59593:C:\Program Files\JetBrains\IntelliJ IDEA 2024.1\bin" -Dfile.encoding=UTF-8 -Dsun.stdout.encoding=UTF-8 -Dsun.stderr.encoding=UTF-8 -classpath 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DbConnection java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828) at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:448) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198) at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:682) at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:230) at DbConnection.getCon(DbConnection.java:11) at DbConnection.main(DbConnection.java:18) 数据库连接失败!
11-27
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