这里接上一篇，介绍如何将一个j2ee的Maven模块中的资源，包括jsp，打包到一个jar包中，提供给其他项目引用。
1、被依赖的项目
1.1 代码修改
被依赖的项目，采用上一篇的module，新建几个测试的jsp，如下。
child/childPub.jsp：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Hello World!</title>
</head>
<%
String tmpChildPubStr = "Hello World!";
%>
<body>
<h2>child/childPub.jsp: <%=tmpChildPubStr%></h2>
</body>
</html>
indexPub.jsp：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Hello World!</title>
</head>
<%
String tmpPubStr = "Hello World!";
%>
<body>
<h2>indexPub.jsp: <%=tmpPubStr%></h2>
</body>
</html>
修改pom.xml文件，如下：
<?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.lfqy.j2ee</groupId>
<artifactId>mvn-tmct</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies> <dependency> <groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency> </dependencies> <build> <resources> <resource> <directory>src/main/webapp</directory>
<excludes> <exclude>WEB-INF/**</exclude>
</excludes> <targetPath>META-INF/resources</targetPath>
<filtering>false</filtering>
</resource> </resources> </build>
</project>
从这个配置，不难看出，实际的含义是将src/main/webapp目录下的资源打包到META-INF/resources目录下，但是不包含WEB-INF子目录下的内容。
1.2 Maven编译和install
到这里，点击IDEA编辑器的右侧Maven侧边栏，选中当前的module，先执行clean，再执行compile之后，可以看出src/main/webapp目录下的资源已经按照我们预期设定的，打包到了target目录下。如下图。
image.png
然后，在当前module的根目录(pom.xml文件所在的目录)下，执行mvn install命令，如下。
$ mvn install
[INFO] Scanning for projects...
[INFO]
[INFO] -----------------------< com.lfqy.j2ee:mvn-tmct >-----------------------
[INFO] Building mvn-tmct 1.0-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mvn-tmct ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 6 resources to META-INF/resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ mvn-tmct ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mvn-tmct ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /Users/chengxia/Developer/TrialProject/mvn-tmct/src/test/resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ mvn-tmct ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ mvn-tmct ---
[INFO] No tests to run.
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mvn-tmct ---
[INFO] Building jar: /Users/chengxia/Developer/TrialProject/mvn-tmct/target/mvn-tmct-1.0-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mvn-tmct ---
[INFO] Installing /Users/chengxia/Developer/TrialProject/mvn-tmct/target/mvn-tmct-1.0-SNAPSHOT.jar to /Users/chengxia/Developer/Java/tools/apache-maven-3.6.0/repository/com/lfqy/j2ee/mvn-tmct/1.0-SNAPSHOT/mvn-tmct-1.0-SNAPSHOT.jar
[INFO] Installing /Users/chengxia/Developer/TrialProject/mvn-tmct/pom.xml to /Users/chengxia/Developer/Java/tools/apache-maven-3.6.0/repository/com/lfqy/j2ee/mvn-tmct/1.0-SNAPSHOT/mvn-tmct-1.0-SNAPSHOT.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.221 s
[INFO] Finished at: 2022-11-27T01:18:21+08:00
[INFO] ------------------------------------------------------------------------
$
2、依赖的项目
2.1 代码修改
参照前面的步骤创建一个基于Maven的J2EE项目mvn-tmct-parent。
pom.xml：
<?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.lfqy.j2ee</groupId>
<artifactId>mvn-tmct-parent</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies> <dependency> <groupId>com.lfqy.j2ee</groupId>
<artifactId>mvn-tmct</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency> </dependencies></project>
新建一个main.jsp，用于测试项目是否正常。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Hello World!</title>
</head>
<%
String tmpStr = "Hello World!";
%>
<body>
<h2>main.jsp: <%=tmpStr%></h2>
</body>
</html>
新建一个mainP.jsp，用于测试是否可以引用Maven依赖jar包resource根目录下的jsp是否正常。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Hello World!</title>
</head>
<%
String tmpMainPStr = "Hello World!";
%>
<body>
<h2>mainP.jsp: <%=tmpMainPStr%></h2>
<h2>child page:</h2>
<%@include file="indexPub.jsp" %>
</body>
</html>
新建一个mainPP.jsp，用于测试是否可以引用Maven依赖jar包resource目录子目录下的jsp是否正常。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Hello World!</title>
</head>
<%
String tmpMainPPStr = "Hello World!";
%>
<body>
<h2>mainPP.jsp: <%=tmpMainPPStr%></h2>
<h2>child page:</h2>
<%@include file="child/childPub.jsp" %>
</body>
</html>
2.2 编译和启动
在当前module的根目录下执行如下命令，用于拷贝依赖到lib目录下。
mvn-tmct-parent chengxia$ mvn dependency:copy-dependencies -DoutputDirectory=/Users/chengxia/Developer/TrialProject/mvn-tmct-parent/src/main/webapp/WEB-INF/lib -DincludeScope=runtime
[INFO] Scanning for projects...
[INFO]
[INFO] -------------------< com.lfqy.j2ee:mvn-tmct-parent >--------------------
[INFO] Building mvn-tmct-parent 1.0-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-dependency-plugin:2.8:copy-dependencies (default-cli) @ mvn-tmct-parent ---
[INFO] Copying commons-lang-2.6.jar to /Users/chengxia/Developer/TrialProject/mvn-tmct-parent/src/main/webapp/WEB-INF/lib/commons-lang-2.6.jar
[INFO] Copying mvn-tmct-1.0-SNAPSHOT.jar to /Users/chengxia/Developer/TrialProject/mvn-tmct-parent/src/main/webapp/WEB-INF/lib/mvn-tmct-1.0-SNAPSHOT.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.765 s
[INFO] Finished at: 2022-11-27T01:40:14+08:00
[INFO] ------------------------------------------------------------------------
mvn-tmct-parent chengxia$
到这里，目录结构如下。
image.png
项目启动后，浏览器中访问http://localhost:8080/main.jsp，如下。
image.png
访问http://localhost:8080/mainP.jsp，如下。
image.png
访问http://localhost:8080/mainPP.jsp，如下。
image.png
到这里，可以看出，maven依赖中的jsp可以被正常引用。
实际上，也可以直接访问maven依赖中的jsp。浏览器中访问http://localhost:8080/indexJava.jsp，如下。
image.png
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