CentOS上安裝JDK1.7 + Tomcat7

1.在centos上卸載已有的java環境
rpm -qa | grep ‘java|gcj’ | xargs -t -I {} rpm -e --nodeps {}

2.安裝JDK1.7

從Oracle網站下載jdk-7u80-linux-x64.tar.gz，拷貝到centos上，並在centos上安裝

tar xzf jdk-7u80-linux-x64.tar.gz

mv jdk1.7.0_80  /usr/lib/jvm/

配置環境

update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.7.0_80/bin/java 300
update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.7.0_80/bin/javac 300

vi ~/.bash_profile

export JAVA_HOME=/usr/lib/jvm/jdk1.7.0_80
export JRE_HOME=/usr/lib/jvm/jdk1.7.0_80/jre
export CLASSPATH=.:$JAVA_HOME/bin/dt.jar:$JAVA_HOME/lib/tools.jar:$CLASSPATH
export PATH=$JAVA_HOME/bin/:$PATH:$HOME/bin

3.安裝Tomcat並配置自動啓動

tar xzf apache-tomcat-7.0.63.tar.gz
mv apache-tomcat-7.0.63 /usr/local/tomcat7
useradd -d /usr/share/tomcat7 tomcat7
chown -R tomcat7:tomcat7 /usr/local/tomcat7
cd /usr/local/tomcat7/bin/
tar xzf commons-daemon-native.tar.gz
cd commons-daemon-1.0.15-native-src/unix/
yum -y install gcc-c++
./configure --with-java=/usr/lib/jvm/jdk1.7.0_80
make
cp jsvc ../..
cd ../..
ln -s /usr/local/tomcat7/bin/daemon.sh /etc/init.d/tomcat7

vim daemon.sh

#!/bin/sh

#

# chkconfig: - 80 20                         
#
# Licensed to the Apache Software Foundation (ASF) under one or more

JAVA_HOME=/usr/lib/jvm/jdk1.7.0_80
CATALINA_HOME=/usr/local/tomcat7
TOMCAT_USER=tomcat7

#如果需要配置jpda端口，需要反註釋下方代碼，並在

start）分支下，CATALINA_OPTS後面添加$JPDA_OPTS，類似 "$LOGGING_CONFIG" $JAVA_OPTS $CATALINA_OPTS $JPDA_OPTS\
#JPDA_OPTS="-agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n"

修改ARG0的值爲如下：

ARG0="$CATALINA_HOME"

chkconfig tomcat7 on

chkconfig --list tomcat7

設置JVM參數：

cd /usr/local/tomcat7/bin

vim setenv.sh

#!/bin/sh
JAVA_OPTS="$JAVA_OPTS -Xms6g -Xmx6g -Xmn2g -Xss1024K -XX:PermSize=256M -XX:MaxPermSize=1g -Djava.awt.headless=true -XX:UseG1GC"

chmod +x setenv.sh

重啓tomcat7即可生效

service tomcat7 stop

service tomcat7 start