最近学习java，想起来没有在Ubuntu上使用过
因此想安装下环境，并在Ubuntu上试用MPXJ读取mpp文件
1.安装
下载jdk8
https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
新建目录
mkdir /usr/lib/jvm
解压
tar -zxvf jdk-8u211-linux-x64.tar.gz -C /usr/lib/jvm
修改环境变量
vim ~/.bashrc
追加
#set oracle jdk environment
export JAVA_HOME=/usr/lib/jvm/jdk1..0_211
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
使生效
source ~/.bashrc
2.测试
（1）是否安装成功
（2）Hello.java
public class Hello {
private Integer aa = ;
public String ss = "sss";
public static void main(String[] args) {
System.out.println("Hello Java");
}
}
javac Hello.java
java Hello
javap Hello
3.用MPXJ读取mpp文件
在http://www.mpxj.org/官网MPXJ in Java，进入下载页
添加MPXJ的包
在/usr/lib/jvm/jdk1.8.0_211/jre/lib/ext下添加下面的jar包（我的安装目录在/usr/lib/jvm/jdk1.8.0_211下）
mpxj.jar
commons-collections4-4.1.jar
poi-3.17.jar
rtfparserkit-1.10..jar
在/www/javatest下添加mpxjtest.java
import net.sf.mpxj.mpp.*;
import net.sf.mpxj.MPXJException;
import net.sf.mpxj.Resource;
import net.sf.mpxj.ResourceAssignment;
import net.sf.mpxj.Task;
import net.sf.mpxj.ProjectFile;
import java.util.List;
import java.io.*;
public class mpxjtest {
public static void main(String[] args) throws MPXJException {
File file = new File("/www/javatest/aa.mpp");
MPPReader mppRead = new MPPReader();
ProjectFile pf = mppRead.read(file);
List tasks = pf.getAllTasks();
mpxjtest mt = new mpxjtest();
System.out.println("总任务数: " + tasks.size());
System.out.println("ID|任务名|资源|开始时间|结束时间|完成百分比");
for (int i = ; i < tasks.size(); i++) {
System.out.println(((Task) tasks.get(i)).getUniqueID() + "|" + ((Task) tasks.get(i)).getName());
}
}
public String getResource(Task task) {
StringBuffer buf = new StringBuffer();
List assignments = task.getResourceAssignments();
for (int i = ; i < assignments.size(); i++) {
ResourceAssignment assignment = (ResourceAssignment) assignments .get(i);
Resource resource = assignment.getResource();
if (resource != null) {
buf.append(resource.getName()).append(" ");
}
}
return buf.toString();
}
}
运行
javac mpxjtest.java
java mpxjtest
结果
说明：
还可以通过ppa(源) 方式安装
add-apt-repository ppa:webupd8team/java
apt-get update
apt-get install oracle-java8-installer