在IDEA中創建maven項目及後續操作

在IDEA中創建maven項目及後續操作

https://blog.csdn.net/qq_36760873/article/details/102385125此鏈接爲在IDEA中創建maven項目需要準備的安裝配置，接下來爲後續操作，下圖爲點擊finish之後創建的maven項目截圖：

一：創建響應文件如下圖所示：

在main和test中的java和resources中分別加上標記：
方式：在java和resources上右擊>Mark Derectory as選擇source root 和resources root呈現和上圖一樣的標誌即可。

二：將項目對應的文件部署到maven項目中

三：配置pom.xml
這其實也是首要要完成的，原項目中的jar包或者是eclipse中的jar包在maven項目中，全部將配置在pom.xml中，此時它需要一箇中央倉庫http://repo1.maven.org/maven2在這個倉庫裏，你可以取到你想要的jar包。

下列是一些常用pom.xml的配置信息，需要注意的是，要根據自己所需進行進行舍取，也得對應相應得版本。

<?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.sram</groupId>
  <artifactId>maven-demo03</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>maven-demo03 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>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.2</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/commons-beanutils/commons-beanutils -->
    <dependency>
      <groupId>commons-beanutils</groupId>
      <artifactId>commons-beanutils</artifactId>
      <version>1.8.0</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/commons-collections/commons-collections -->
    <dependency>
      <groupId>commons-collections</groupId>
      <artifactId>commons-collections</artifactId>
      <version>3.2.1</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/commons-dbutils/commons-dbutils -->
    <dependency>
      <groupId>commons-dbutils</groupId>
      <artifactId>commons-dbutils</artifactId>
      <version>1.7</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.5</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->
    <dependency>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
      <version>1.1.1</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-pool2 -->
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-pool2</artifactId>
      <version>2.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/redis.clients/jedis -->
    <dependency>
      <groupId>redis.clients</groupId>
      <artifactId>jedis</artifactId>
      <version>2.9.0</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.37</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/javax.servlet.jsp.jstl/jstl -->
    <!-- https://mvnrepository.com/artifact/jstl/jstl -->
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
    <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
    <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>4.0.1</version>
      <scope>provided</scope>
    </dependency>


  </dependencies>

  <build>
    <finalName>maven-demo03</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <!--   <plugin>
               <artifactId>maven-compiler-plugin</artifactId>
               <version>3.8.0</version>
           </plugin>-->
        <plugin>

          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
          <configuration>
            <source>1.8</source>
            <target>1.8</target>
            <encoding>UTF-8</encoding>
          </configuration>
        </plugin>

        <plugin>
          <groupId>org.apache.tomcat.maven</groupId>
          <artifactId>tomcat7-maven-plugin</artifactId>
          <version>2.2</version>
          <configuration>
            <path>/</path>
            <port>8080</port>
          </configuration>
        </plugin>


        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

四：web.xml的配置

這裏也是容易出錯的地方：一般出錯原因有這幾點：
版本不支持導致的報紅
代碼寫法有誤導致的報錯
報錯參考我的另一篇博文：https://blog.csdn.net/qq_36760873/article/details/102399749

這裏一定要寫對，否則項目就肯定運行不了

五：清空編譯部署等操作：
maven的作用：
在IDEA工具右邊，點擊maven project進入下圖：

可以看到這些插件：

我們在部署項目的時候，先將原有的項目信息進行清空處理，直接雙擊此插件中的clean，運行結果如下圖：
接下來我們需要啓動服務器：如下圖進入edit項目：

點擊+，選擇maven

進行如下配置

然後點擊apply》OK

最後啓動項目，項目啓動成功則如下圖所示：

切記;項目編譯時就會生成這些文件：
項目啓動只可打開一個，不能同時運行兩個，否則即使前一個報錯，也依然會佔用端口或佔用資源等導致項目無法正常運行，如下如所示：打開兩次就會失敗：

項目繼續更新：歡迎一起留言分享