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Java 工程在生产环境运行时，一般需要构建成一个jar，同时在运行时需要把依赖的jar添加到classpath中去，如果直接运行添加classpath很不方便，比较方便的是创建一个shell脚本。在公司项目中看到把工程代码和依赖jar包合并到一块，省去设置classpath的麻烦。但这样把项目jar依赖绑定死，被其它项目引入，容易造成jar依赖冲突，如果用maven管理java项目，导致提交到公司仓库jar过于庞大，同时也失去maven对jar依赖管理的作用。
    为了方便java项目部署运行，这里为构建部署包定义一个固定格式：

/java 项目
   /lib    --存放所有依赖jar
   /conf   --存放配置文件，例如：log4j, spring, properties等配置文件，不放入jar是为
             了方便修改这些配置文件
   /logs   --运行时自动创建的目录，存放日志文件
   /bin    --存放运行脚本: server.sh 启动和停止项目运行。

如果在构建部署包时，需要我们手动去创建这样的目录，把文件拷贝相应目录，实在是太繁琐了，幸好maven为我们这样“懒惰”coder提供了一个很好的plugin：maven-assembly-plugin，可以去定制这样的部署结构

1：配置maven-assembly-plugin

Java代码  

1. <plugin>
2. <groupId>org.apache.maven.plugins</groupId>
3. <artifactId>maven-assembly-plugin</artifactId>
4. <configuration>
5. <descriptors>
6. <descriptor>src/main/assembly/assembly.xml</descriptor>
7. </descriptors>
8. </configuration>
9. <executions>
10. <execution>
11. <id>make-assembly</id>
12. <phase>package</phase>
13. <goals>
14. <goal>single</goal>
15. </goals>
16. </execution>
17. </executions>
18. </plugin>

<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<descriptors>
<descriptor>src/main/assembly/assembly.xml</descriptor>
</descriptors>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>

2：assembly 配置打包格式

定义在assembly.xml文件中，文件中配置信息不作过多解释，可以参考相应文档

Java代码  

1. <assembly
2. xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2"
3. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4. xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
5. <id>bin</id>
6. <formats>
7. <format>tar.gz</format>
8. </formats>
9. <dependencySets>
10. <dependencySet>
11. <useProjectArtifact>true</useProjectArtifact>
12. <outputDirectory>lib</outputDirectory>
13. <scope>runtime</scope>
14. </dependencySet>
15. </dependencySets>
16. <fileSets>
17. <fileSet>
18. <outputDirectory>/</outputDirectory>
19. <includes>
20. <include>README.txt</include>
21. </includes>
22. </fileSet>
23. <fileSet>
24. <directory>src/main/scripts</directory>
25. <outputDirectory>/bin</outputDirectory>
26. <lineEnding>unix</lineEnding>
27. <fileMode>0755</fileMode>
28. <includes>
29. <include>*.sh</include>
30. </includes>
31. </fileSet>
32. <fileSet>
33. <directory>target/classes</directory>
34. <outputDirectory>/conf</outputDirectory>
35. <includes>
36. <include>*.xml</include>
37. </includes>
38. </fileSet>
39. </fileSets>
40. </assembly>

<assembly
xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
<id>bin</id>
<formats>
<format>tar.gz</format>
</formats>
<dependencySets>
<dependencySet>
<useProjectArtifact>true</useProjectArtifact>
<outputDirectory>lib</outputDirectory>
<scope>runtime</scope>
</dependencySet>
</dependencySets>
<fileSets>
<fileSet>
<outputDirectory>/</outputDirectory>
<includes>
<include>README.txt</include>
</includes>
</fileSet>
<fileSet>
<directory>src/main/scripts</directory>
<outputDirectory>/bin</outputDirectory>
<lineEnding>unix</lineEnding>
<fileMode>0755</fileMode>
<includes>
<include>*.sh</include>
</includes>
</fileSet>
<fileSet>
<directory>target/classes</directory>
<outputDirectory>/conf</outputDirectory>
<includes>
<include>*.xml</include>
</includes>
</fileSet>
</fileSets>
</assembly>

下面这段配置主要从src/main/scripts目录获取shell脚本复制到bin目录。同时设置文件模式为unix，文件具有可执行权限。

Java代码  

1. <directory>src/main/scripts</directory>
2. <outputDirectory>/bin</outputDirectory>
3. <lineEnding>unix</lineEnding>
4. <fileMode>0755</fileMode>
5. <includes>
6. <include>*.sh</include>
7. </includes>

<directory>src/main/scripts</directory>
<outputDirectory>/bin</outputDirectory>
<lineEnding>unix</lineEnding>
<fileMode>0755</fileMode>
<includes>
<include>*.sh</include>
</includes>

3：启动类设计

在学习metamorphosis的时候，对它的启动脚本做了一些了解，发现服务stop方式设计比较优雅，通过JMX连接JVM，去关闭系统内部资源，再kill掉进程。

UeapServerMBean定义stop方法，实现类UeapServer完成系统启动加载和停止功能。ServerStartup是main方法入口，调用 UeapServer启动方式，并注册 UeapServer到JMX中。

4：启动脚本

系统启动脚本分为了两个文件：

env.sh 配置一些环境变量和JVM参数，实际应用中只需要修改 SERVER_NAME、  STARTUP_CLASS和 UEAP_JVM_ARGS变量名称。

server.sh 实际运行脚本，提供启动、停止、运行状态查询、重启功能，实际应用中不需要改动该文件。

env.sh

Java代码  

1. #!/bin/bash
2. #Config your java home
3. #JAVA_HOME=/opt/jdk/
4. if [ -z "$JAVA_HOME" ]; then
5. export JAVA=`which java`
6. else
7. export JAVA="$JAVA_HOME/bin/java"
8. fi
9. UEAP_HOME=$BASE_DIR
10. SERVER_NAME="collect master"
11. STARTUP_CLASS="com.starit.ueap.collect.master.ServerStartup"
12. #Ueap JMX port
13. export JMX_PORT=9123
14. export CLASSPATH=$BASE_DIR/conf:$(ls $BASE_DIR/lib/*.jar | tr '\n' :)
15. #UEAP jvm args
16. UEAP_JVM_ARGS="-Xmx512m -Xms256m -server"
17. UEAP_JVM_ARGS="$UEAP_JVM_ARGS -cp $CLASSPATH -Dueap.home=$ueap_home -Dcollect.start.worker=false"
18. if [ -z "$UEAP_ARGS" ]; then
19. export UEAP_ARGS="$UEAP_JVM_ARGS"
20. fi

#!/bin/bash
#Config your java home
#JAVA_HOME=/opt/jdk/
if [ -z "$JAVA_HOME" ]; then
export JAVA=`which java`
else
export JAVA="$JAVA_HOME/bin/java"
fi
UEAP_HOME=$BASE_DIR
SERVER_NAME="collect master"
STARTUP_CLASS="com.starit.ueap.collect.master.ServerStartup"
#Ueap JMX port
export JMX_PORT=9123
export CLASSPATH=$BASE_DIR/conf:$(ls $BASE_DIR/lib/*.jar | tr '\n' :)
#UEAP jvm args
UEAP_JVM_ARGS="-Xmx512m -Xms256m -server"
UEAP_JVM_ARGS="$UEAP_JVM_ARGS -cp $CLASSPATH -Dueap.home=$ueap_home -Dcollect.start.worker=false"
if [ -z "$UEAP_ARGS" ]; then
export UEAP_ARGS="$UEAP_JVM_ARGS"
fi

server.sh

Java代码  

1. #!/bin/bash
2. if [ -z "$BASE_DIR" ] ; then
3. PRG="$0"
4. # need this for relative symlinks
5. while [ -h "$PRG" ] ; do
6. ls=`ls -ld "$PRG"`
7. link=`expr "$ls" : '.*-> \(.*\)$'`
8. if expr "$link" : '/.*' > /dev/null; then
9. PRG="$link"
10. else
11. PRG="`dirname "$PRG"`/$link"
12. fi
13. done
14. BASE_DIR=`dirname "$PRG"`/..
15. # make it fully qualified
16. BASE_DIR=`cd "$BASE_DIR" && pwd`
17. #echo "collect master is at $BASE_DIR"
18. fi
19. source $BASE_DIR/bin/env.sh
20. AS_USER=`whoami`
21. LOG_DIR="$BASE_DIR/logs"
22. LOG_FILE="$LOG_DIR/server.log"
23. PID_DIR="$BASE_DIR/logs"
24. PID_FILE="$PID_DIR/.run.pid"
25. function running(){
26. if [ -f "$PID_FILE" ]; then
27. pid=$(cat "$PID_FILE")
28. process=`ps aux | grep " $pid " | grep -v grep`;
29. if [ "$process" == "" ]; then
30. return 1;
31. else
32. return 0;
33. fi
34. else
35. return 1
36. fi
37. }
38. function start_server() {
39. if running; then
40. echo "$SERVER_NAME is running."
41. exit 1
42. fi
43. mkdir -p $PID_DIR
44. touch $LOG_FILE
45. mkdir -p $LOG_DIR
46. chown -R $AS_USER $PID_DIR
47. chown -R $AS_USER $LOG_DIR
48. echo "$JAVA $UEAP_JVM_ARGS -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false \
49. -Dcom.sun.management.jmxremote.port=$JMX_PORT $STARTUP_CLASS"
50. sleep 1
51. nohup $JAVA $UEAP_JVM_ARGS -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false \
52. -Dcom.sun.management.jmxremote.port=$JMX_PORT $STARTUP_CLASS 2>&1 >>$LOG_FILE &
53. echo $! > $PID_FILE
54. chmod 755 $PID_FILE
55. sleep 1;
56. tail -F $LOG_FILE
57. }
58. function stop_server() {
59. if ! running; then
60. echo "$SERVER_NAME is not running."
61. exit 1
62. fi
63. count=0
64. pid=$(cat $PID_FILE)
65. while running;
66. do
67. let count=$count+1
68. echo "Stopping $SERVER_NAME $count times"
69. if [ $count -gt 5 ]; then
70. echo "kill -9 $pid"
71. kill -9 $pid
72. else
73. $JAVA $TOOLS_ARGS com.starit.ueap.common.shell.StopServerTool -host 127.0.0.1 -port $JMX_PORT $@
74. kill $pid
75. fi
76. sleep 3;
77. done
78. echo "Stop $SERVER_NAME successfully."
79. rm $PID_FILE
80. }
81. function status(){
82. if running; then
83. echo "$SERVER_NAME is running."
84. else
85. echo "$SERVER_NAME was stopped."
86. fi
87. }
88. function help() {
89. echo "Usage: server.sh {start|status|stop|restart|reload}" >&2
90. echo "       start:             start the $SERVER_NAME server"
91. echo "       stop:              stop the $SERVER_NAME server"
92. echo "       restart:           restart the $SERVER_NAME server"
93. echo "       status:            get $SERVER_NAME current status,running or stopped."
94. }
95. command=$1
96. shift 1
97. case $command in
98. start)
99. start_server $@;
100. ;;
101. stop)
102. stop_server $@;
103. ;;
104. status)
105. status $@;
106. ;;
107. restart)
108. $0 stop $@
109. $0 start $@
110. ;;
111. help)
112. help;
113. ;;
114. *)
115. help;
116. exit 1;
117. ;;
118. esac

#!/bin/bash
if [ -z "$BASE_DIR" ] ; then
PRG="$0"
# need this for relative symlinks
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG="`dirname "$PRG"`/$link"
fi
done
BASE_DIR=`dirname "$PRG"`/..
# make it fully qualified
BASE_DIR=`cd "$BASE_DIR" && pwd`
#echo "collect master is at $BASE_DIR"
fi
source $BASE_DIR/bin/env.sh
AS_USER=`whoami`
LOG_DIR="$BASE_DIR/logs"
LOG_FILE="$LOG_DIR/server.log"
PID_DIR="$BASE_DIR/logs"
PID_FILE="$PID_DIR/.run.pid"
function running(){
if [ -f "$PID_FILE" ]; then
pid=$(cat "$PID_FILE")
process=`ps aux | grep " $pid " | grep -v grep`;
if [ "$process" == "" ]; then
return 1;
else
return 0;
fi
else
return 1
fi
}
function start_server() {
if running; then
echo "$SERVER_NAME is running."
exit 1
fi
mkdir -p $PID_DIR
touch $LOG_FILE
mkdir -p $LOG_DIR
chown -R $AS_USER $PID_DIR
chown -R $AS_USER $LOG_DIR
echo "$JAVA $UEAP_JVM_ARGS -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false \
-Dcom.sun.management.jmxremote.port=$JMX_PORT $STARTUP_CLASS"
sleep 1
nohup $JAVA $UEAP_JVM_ARGS -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false \
-Dcom.sun.management.jmxremote.port=$JMX_PORT $STARTUP_CLASS 2>&1 >>$LOG_FILE &
echo $! > $PID_FILE
chmod 755 $PID_FILE
sleep 1;
tail -F $LOG_FILE
}
function stop_server() {
if ! running; then
echo "$SERVER_NAME is not running."
exit 1
fi
count=0
pid=$(cat $PID_FILE)
while running;
do
let count=$count+1
echo "Stopping $SERVER_NAME $count times"
if [ $count -gt 5 ]; then
echo "kill -9 $pid"
kill -9 $pid
else
$JAVA $TOOLS_ARGS com.starit.ueap.common.shell.StopServerTool -host 127.0.0.1 -port $JMX_PORT $@
kill $pid
fi
sleep 3;
done
echo "Stop $SERVER_NAME successfully."
rm $PID_FILE
}
function status(){
if running; then
echo "$SERVER_NAME is running."
else
echo "$SERVER_NAME was stopped."
fi
}
function help() {
echo "Usage: server.sh {start|status|stop|restart|reload}" >&2
echo "       start:             start the $SERVER_NAME server"
echo "       stop:              stop the $SERVER_NAME server"
echo "       restart:           restart the $SERVER_NAME server"
echo "       status:            get $SERVER_NAME current status,running or stopped."
}
command=$1
shift 1
case $command in
start)
start_server $@;
;;
stop)
stop_server $@;
;;
status)
status $@;
;;
restart)
$0 stop $@
$0 start $@
;;
help)
help;
;;
*)
help;
exit 1;
;;
esac

4：执行mvn install或者mvn package 可以再target生成tar.gz后缀文件。提交到linux系统，解压缩即可运行。（不考虑window环境）

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