Intellij IDEA创建Java Web工程以及部署

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之前开发一直都用的Eclipse和MyEclipse,由于工作中需要改用了Intellij,一开始一肚子抱怨,不过用着用着发现大家对Intellij的褒扬并非空穴来风,Intellij IDEA的确有过人之处,尤其是与Maven的结合,以及结合Jetty的快速部署和测试给开发带来了极大的便利。

下面介绍下在Intellij下创建基于Maven的JAVA工程以及部署:

首先,创建一个Maven的空白工程

两个ID可以随便输

输入工程名就可以了

创建完毕以后的目录结构是这样的:

我这里有web功能是因为我自己加的,一开始的空白maven工程是不会有web文件夹的,具体方法就是在工程上右键选择“Add Framework Support”,选择需要添加的框架即可,可以是web,也可以是JAVAEE或者spring,不过这些包一般都在pom中配置即可,这样做的好处是,以后工程共享和做版本控制的时候,只需要共享一份源代码和一份pom.xml就可以了,不需要重复配置jar包。

下面详细解释一下pom文件,在maven项目中,运行和部署都要靠它

<?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.seiya</groupId>    <artifactId>jobstatistics</artifactId>    <version>1.0-SNAPSHOT</version>    <packaging>war</packaging>    <!--<name>${project.artifactId}</name>-->    <dependencies>        <dependency>            <groupId>org.mybatis</groupId>            <artifactId>mybatis</artifactId>            <version>3.2.0</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-web</artifactId>            <version>4.0.4.RELEASE</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-webmvc</artifactId>            <version>4.0.4.RELEASE</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-orm</artifactId>            <version>4.0.4.RELEASE</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-context-support</artifactId>            <version>4.0.4.RELEASE</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-tx</artifactId>            <version>4.0.4.RELEASE</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-aop</artifactId>            <version>4.0.4.RELEASE</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-beans</artifactId>            <version>4.0.4.RELEASE</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-core</artifactId>            <version>4.0.4.RELEASE</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-context</artifactId>            <version>4.0.4.RELEASE</version>        </dependency>        <dependency>            <groupId>commons-httpclient</groupId>            <artifactId>commons-httpclient</artifactId>            <version>3.1</version>        </dependency>        <dependency>            <groupId>org.json</groupId>            <artifactId>json</artifactId>            <version>20090211</version>        </dependency>        <dependency>            <groupId>mysql</groupId>            <artifactId>mysql-connector-java</artifactId>            <version>5.0.8</version>        </dependency>        <dependency>            <groupId>org.codehaus.jackson</groupId>            <artifactId>com.springsource.org.codehaus.jackson.mapper</artifactId>            <version>1.0.0</version>        </dependency>        <dependency>            <groupId>org.codehaus.jackson</groupId>            <artifactId>com.springsource.org.codehaus.jackson</artifactId>            <version>1.0.0</version>        </dependency>        <!-- J2ee web spec -->        <dependency>            <groupId>javax.servlet</groupId>            <artifactId>servlet-api</artifactId>            <version>2.5</version>        </dependency>        <dependency>            <groupId>javax.servlet</groupId>            <artifactId>jsp-api</artifactId>            <version>2.0</version>        </dependency>        <!--<dependency>            <groupId>org.mortbay.jetty</groupId>            <artifactId>jsp-2.1</artifactId>            <version>6.0.0</version>        </dependency>-->    </dependencies>    <!--<distributionManagement>        <repository>            <id>nexus-releases</id>            <name>releases</name>            <url>http://127.0.0.1:8081/nexus/content/repositories/releases/</url>        </repository>    </distributionManagement>-->    <build>        <defaultGoal>install</defaultGoal>        <plugins>            <plugin>                <groupId>org.apache.maven.plugins</groupId>                <artifactId>maven-compiler-plugin</artifactId>                <version>3.1</version>                <configuration>                    <source>1.7</source>                    <target>1.7</target>                    <encoding>UTF-8</encoding>                </configuration>            </plugin>            <plugin>                <groupId>org.mortbay.jetty</groupId>                <artifactId>maven-jetty-plugin</artifactId>                <version>6.1.26</version>                <configuration>                    <contextPath>/jobstatistics</contextPath>                    <connectors>                        <connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">                            <port>8010</port>                            <maxIdleTime>3600000</maxIdleTime>                        </connector>                    </connectors>                    <scanIntervalSeconds>0</scanIntervalSeconds>                    <webAppSourceDirectory>web</webAppSourceDirectory>                </configuration>                <dependencies>                    <dependency>                        <groupId>org.mortbay.jetty</groupId>                        <artifactId>jetty</artifactId>                        <version>6.1.26-nolock</version>                    </dependency>                </dependencies>            </plugin>            <plugin>                <artifactId>maven-dependency-plugin</artifactId>                <version>2.8</version>                <configuration>                    <outputDirectory>${basedir}/lib</outputDirectory>                </configuration>            </plugin>            <plugin>                <groupId>org.apache.maven.plugins</groupId>                <artifactId>maven-war-plugin</artifactId>                <version>2.4</version>                <configuration>                    <warName>${project.artifactId}</warName>                    <webResources>                        <resource>                            <directory>web</directory>                        </resource>                    </webResources>                </configuration>            </plugin>        </plugins>    </build></project>

<groupId>com.seiya</groupId><artifactId>jobstatistics</artifactId><version>1.0-SNAPSHOT</version><packaging>war</packaging>
这几句话表示的项目的基本信息,如果要打包成war包的话,<packaging>必不可少

<dependencies>里面是所有依赖项,就是第三方jar包
<plugin>    <groupId>org.apache.maven.plugins</groupId>    <artifactId>maven-compiler-plugin</artifactId>    <version>3.1</version>    <configuration>        <source>1.7</source>        <target>1.7</target>        <encoding>UTF-8</encoding>    </configuration></plugin>
这是配置maven的编译信息以及字符编码信息

<plugin>    <groupId>org.mortbay.jetty</groupId>    <artifactId>maven-jetty-plugin</artifactId>    <version>6.1.26</version>    <configuration>        <contextPath>/jobstatistics</contextPath>        <connectors>            <connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">                <port>8010</port>                <maxIdleTime>3600000</maxIdleTime>            </connector>        </connectors>        <scanIntervalSeconds>0</scanIntervalSeconds>        <webAppSourceDirectory>web</webAppSourceDirectory>    </configuration>    <dependencies>        <dependency>            <groupId>org.mortbay.jetty</groupId>            <artifactId>jetty</artifactId>            <version>6.1.26-nolock</version>        </dependency>    </dependencies></plugin>
这是配置jetty的信息,这段话配置好之后,会在右边栏中出现jetty选项

contextPath
指的是上下文,也就是你工程的名字

<webAppSourceDirectory>web</webAppSourceDirectory>
这个值要和你的web文件夹对于起来,如果你的项目中叫webapp,那么就是webapp,如果是web,那么就是web,总之就是要让maven能够找到你的web文件夹

<plugin>    <artifactId>maven-dependency-plugin</artifactId>    <version>2.8</version>    <configuration>        <outputDirectory>${basedir}/lib</outputDirectory>    </configuration></plugin>
这段话是配置依赖性的,也就是生成lib文件夹,否则在target中不会有lib文件夹,其中也不会有jar包


<plugin>    <groupId>org.apache.maven.plugins</groupId>    <artifactId>maven-war-plugin</artifactId>    <version>2.4</version>    <configuration>        <warName>${project.artifactId}</warName>        <webResources>            <resource>                <directory>web</directory>            </resource>        </webResources>    </configuration></plugin>

这段话是为了生成war包而配置的,我们的工程在jetty中直接就可以运行,配置war主要是为了可以将war直接丢进我们想要的web容器中,比如tomcat,即可以直接运行。

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