进入到idea的tomcat的run/debug配置，新建个remote tomcat,然后填写相关信息，如上图(注意远程调试端口)。

再选择Startup/Connection，如下图所示：

到此，idea已经配置好了，接下来将图上说的那段拷贝到远程的tomcat的catalina.sh文件中。

登陆到远程服务器，进入到tomcat的bin目录下，vi打开catalina.sh文件：

找到第一个JAVA_OPTS，添加：

JAVA_OPTS="-agentlib:jdwp=transport=dt_socket,address=54531,suspend=n,server=y"或者

CATALINA_OPTS="-agentlib:jdwp=transport=dt_socket,address=54531,suspend=n,server=y"

填一个即可。

重启下tomcat。

netstat -an | grep 55555，查看下55555端口是否打开，打开说民设置成功。

这样既可以使用idea远程调试了。

另外最好的方式就是不要去改动默认的sh文件，那就是自己写的debug.sh。

将startup.sh拷贝一份，改名为debug.sh.

打开，内容如下：

#!/bin/sh

# Licensed to the Apache Software Foundation (ASF) under one or more

# contributor license agreements.  See the NOTICE file distributed with

# this work for additional information regarding copyright ownership.

# The ASF licenses this file to You under the Apache License, Version 2.0

# (the "License"); you may not use this file except in compliance with

# the License.  You may obtain a copy of the License at

#

#     http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

# -----------------------------------------------------------------------------

# Start Script for the CATALINA Server

# -----------------------------------------------------------------------------

# Better OS/400 detection: see Bugzilla 31132

os400=false

case "`uname`" in

OS400*) os400=true;;

esac

# resolve links - $0 may be a softlink

PRG="$0"

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

PRGDIR=`dirname "$PRG"`

EXECUTABLE=catalina.sh

# Check that target executable exists

if $os400; then

  # -x will Only work on the os400 if the files are:

  # 1. owned by the user

  # 2. owned by the PRIMARY group of the user

  # this will not work if the user belongs in secondary groups

  eval

else

  if [ ! -x "$PRGDIR"/"$EXECUTABLE" ]; then

    echo "Cannot find $PRGDIR/$EXECUTABLE"

    echo "The file is absent or does not have execute permission"

    echo "This file is needed to run this program"

    exit 1

  fi

fi

export CATALINA_OPTS="-agentlib:jdwp=transport=dt_socket,address=55555,suspend=n,server=y"

exec "$PRGDIR"/"$EXECUTABLE" start "$@"

 增加红色部分即可。

root@×××:/usr/local/tomcat/bin# sh debug.sh

Using CATALINA_BASE:   /usr/local/tomcat

Using CATALINA_HOME:   /usr/local/tomcat

Using CATALINA_TMPDIR: /usr/local/tomcat/temp

Using JRE_HOME:        /usr/lib/jdk/jre

Using CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar

Tomcat started.

root@×××:/usr/local/tomcat/bin# netstat -ano|grep 55555

tcp        0      0 0.0.0.0:55555           0.0.0.0:*               LISTEN      off (0.00/0/0)

root@×××:/usr/local/tomcat/bin#

如果按上面步骤执行后，看见设置的端口已经被监听，说明配置成功。