用Jetty快速开发J2EE应用

zhltom

对于用Maven管理的项目，可以使用Maven的Jetty插件启动应用进行快速测试。项目的pom.xml配置如下：

<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.cdai</groupId>
<artifactId>struts2-conf</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<!-- 主要依赖库的版本定义 -->
<properties>
<spring.version>3.1.2.RELEASE</spring.version>
<mybatis.version>3.1.1</mybatis.version>
<commons-dbcp.version>1.4</commons-dbcp.version>
<jetty.version>7.6.5.v20120716</jetty.version>
</properties>
<dependencies>
<!-- STRUTS2 begin -->
<dependency>  
<groupId>org.apache.struts</groupId>  
<artifactId>struts2-core</artifactId>  
<version>2.3.1.2</version>  
</dependency>
<!-- <dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-spring-plugin</artifactId>
<version>2.3.1.2</version>
</dependency> -->
<!-- STRUTS2 end -->
<!-- SPRING begin -->
<!-- spring core begin -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- spring core end -->
<!-- spring data access begin -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- spring data access end -->
<!-- SPRING end -->
<!-- MYBATIS begin -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.1.1</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.1.1</version>
</dependency>
<!-- MYBATIS end -->
<!-- MYSQL begin -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.9</version>
</dependency>
<!-- MYSQL end -->
<!-- COMMON begin -->
<!-- web begin -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<!-- jetty for functional test and executable war -->
<dependency>
<groupId>org.eclipse.jetty.aggregate</groupId>
<artifactId>jetty-webapp</artifactId>
<version>${jetty.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-jsp</artifactId>
<version>${jetty.version}</version>
<scope>provided</scope>
</dependency>
<!-- web end -->
<!-- persistence begin -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>${commons-dbcp.version}</version>
</dependency>
<!-- persistence end -->
<!-- aop begin -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.2.2</version>
<scope>runtime</scope>
</dependency>
<!-- aop end -->
<!-- COMMON end -->
</dependencies>
<build>
<plugins>
<!-- jetty插件, 设定context path与spring profile -->
<plugin>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<configuration>
<systemProperties>
<systemProperty>
<name>spring.profiles.active</name>
<value>development</value>
</systemProperty>
</systemProperties>
<webAppConfig>
<contextPath>/cdai</contextPath>
</webAppConfig>
</configuration>
</plugin>
</plugins>
</build>
</project>


之后在命令行输入mvn jetty:run即可启动应用程序。Jetty插件自动将src/main/webapp作为Web应用的根目录。




此外，也可以按照下面的方法用main()方法来启动应用。

package com.cdai.web.ssh;
import java.io.File;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.webapp.WebAppContext;
public class JettyRunner {
public static void main(String[] args) throws Exception {
String contextPath = "/cdai";
int port = Integer.getInteger("port", 8080);
Server server = createServer(contextPath, port);
try {
server.start();
server.join();
} catch (Exception e) {
e.printStackTrace();
System.exit(100);
}
}
private static Server createServer(String contextPath, int port) {
//use Eclipse JDT compiler
System.setProperty("org.apache.jasper.compiler.disablejsr199", "true");
Server server = new Server(port);
server.setStopAtShutdown(true);
String warFile = "src/main/webapp";
WebAppContext context = new WebAppContext(warFile, contextPath);
context.setServer(server);
//设置work dir,war包将解压到该目录，jsp编译后的文件也将放入其中。
String currentDir = new File(warFile).getParent();
File workDir = new File(currentDir, "work");
context.setTempDirectory(workDir);
server.setHandler(context);
return server;
}
}


但是在使用Struts2时，Jetty找不到struts2标签报错，不知道有没有人碰到过。为什么main()方法启动的Jetty不会自动去Jar中

找struts2标签配置文件呢？应该怎样配置Jetty去解决？




以下是Jetty插件默认的配置。存放JSP编译结果的临时目录不再是main()方法启动时的src/main/work，而是target/tmp。