maven 建立 webapp 项目 有2种方式 ，
1.在原先app上转换为webapp项目
2.建立maven项目的时候 filter 选择webapp 该选项把webapp文件目录建好，其他的还是要自己配。。。。。
采用将原先的app项目改成 webapp项目
1.改变项目，动态web工程
让项目成此结构
eclipse buliders 配置文件
<?xml version="1.0" encoding="UTF-8"?><projectDescription><name>mmvc</name><comment></comment><projects></projects><buildSpec><buildCommand><name>org.eclipse.wst.jsdt.core.javascriptValidator</name><arguments></arguments></buildCommand><buildCommand><name>org.eclipse.jdt.core.javabuilder</name><arguments></arguments></buildCommand><buildCommand><name>org.eclipse.wst.common.project.facet.core.builder</name><arguments></arguments></buildCommand><buildCommand><name>org.eclipse.wst.validation.validationbuilder</name><arguments></arguments></buildCommand><buildCommand><name>org.eclipse.m2e.core.maven2Builder</name><arguments></arguments></buildCommand></buildSpec><natures><nature>org.eclipse.m2e.core.maven2Nature</nature><nature>org.eclipse.jem.workbench.JavaEMFNature</nature><nature>org.eclipse.wst.common.modulecore.ModuleCoreNature</nature><nature>org.eclipse.wst.common.project.facet.core.nature</nature><nature>org.eclipse.jdt.core.javanature</nature><nature>org.eclipse.wst.jsdt.core.jsNature</nature></natures></projectDescription>
项目 工程下 .settings ---- .jsdtscope文件修改 java脚本路径
<?xml version="1.0" encoding="UTF-8"?><classpath><classpathentry kind="src" path="/src/main/webapp"/> //改这里<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.JRE_CONTAINER"/><classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.WebProject"><attributes><attribute name="hide" value="true"/></attributes></classpathentry><classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.baseBrowserLibrary"/><classpathentry kind="output" path=""/></classpath>
配置 web context root deploy-path 目录
如果项目原先为 web工程 ，这时候要换目录则需要进入配置文件改动
项目 工程下 .settings ---- org.eclipse.wst.common.component文件修改 发布目录
<?xml version="1.0" encoding="UTF-8"?><project-modules id="moduleCoreId" project-version="1.5.0"><wb-module deploy-name="mmvc"><wb-resource deploy-path="/" source-path="/src/main/webapp" tag="defaultRootSource"/><wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/java"/><wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/resource"/><property name="context-root" value="mmvc"/><property name="java-output-path" value="/mmvc/build/classes"/></wb-module></project-modules>
文件目录建好之后 ， 为了让java 脚本及配置文件能 auto bulid 需要配置 这2个目自动编译至webapp发布目录 /classes
ok web项目基本构建完成
2.pom.xml 配置 web 所需要的环境
<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>mmvc</groupId><artifactId>mmvc</artifactId><version>1</version><packaging>war</packaging><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><spring.version>3.0.5.RELEASE</spring.version></properties><dependencies><dependency><groupId>org.apache.openejb</groupId><artifactId>javaee-api</artifactId><version>5.0-1</version><scope>provided</scope></dependency><dependency><groupId>javax.faces</groupId><artifactId>jsf-api</artifactId><version>1.2_04</version><scope>provided</scope></dependency><dependency><groupId>javax.servlet</groupId><artifactId>jstl</artifactId><version>1.2</version><scope>provided</scope></dependency><dependency><groupId>javax.servlet.jsp</groupId><artifactId>jsp-api</artifactId><version>2.1</version><scope>provided</scope></dependency><dependency><groupId>javax.faces</groupId><artifactId>jsf-impl</artifactId><version>1.2_04</version><scope>provided</scope></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${spring.version}</version><scope>runtime</scope></dependency></dependencies><build><!-- 列出所依赖的 plugin mvn自动选择包含的 --><pluginManagement><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><configuration><source>1.6</source><target>1.6</target></configuration></plugin><plugin><groupId>org.eclipse.m2e</groupId><artifactId>lifecycle-mapping</artifactId><version>1.0.0</version><configuration><lifecycleMappingMetadata><pluginExecutions><pluginExecution><pluginExecutionFilter><groupId>org.apache.maven.plugins</groupId><artifactId>maven-dependency-plugin</artifactId><versionRange>[2.0,)</versionRange><goals><goal>copy-dependencies</goal></goals></pluginExecutionFilter><action><ignore /></action></pluginExecution></pluginExecutions></lifecycleMappingMetadata></configuration></plugin></plugins></pluginManagement><plugins><!-- remove jar plugins --><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-clean-plugin</artifactId><executions><execution><id>clean</id><phase>install</phase><goals><goal>clean</goal></goals><configuration><directory>/src/main/webapp/WEB-INF/lib</directory></configuration></execution></executions></plugin><!-- copy jar plugins --><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-dependency-plugin</artifactId><executions><execution><id>copy-dependencies</id><phase>package</phase><goals><goal>copy-dependencies</goal></goals><configuration><outputDirectory>src/main/webapp/WEB-INF/lib</outputDirectory><excludeTransitive>false</excludeTransitive><stripVersion>false</stripVersion> <!-- 复制jar 的时候去掉版本信息 true : 去掉 false： 不去掉 --><includeScope>runtime</includeScope></configuration></execution></executions></plugin></plugins></build></project>
以上配置包含 javeee 自带的jar , springmvc 框架 所需jar ,可以从maven远程仓库获取至本地服务器仓库 ,再 从maven仓库获取
另包含 自动部署的时候 copy jar到 发布目录下的lib目录下
ok 需要生成 package的时候 会自动生成到 target 目录下并打成war包
maven package执行的时候会遇到jdk版本不对的问题 ：原因是 maven所指定的jdk版本与项目使用的jdk版本不一致
跑起来吧 。。。。。。。。。。。。。。。。。。。。