The run goal forks a process for the boot application. It is possible to specify jvm arguments to that forked process. The following configuration suspend the process until a debugger has joined on port 5005
<project>
...
<build>
...
<plugins>
...
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>1.1.12.RELEASE</version>
<configuration>
<jvmArguments>
-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005
</jvmArguments>
</configuration>
...
</plugin>
...
</plugins>
...
</build>
...
</project>
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These arguments can be specified on the command line as well, make sure to wrap that properly, that is:
mvn spring-boot:run -Drun.jvmArguments="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005"
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jar 命令开启远程调试
在执行jar的时候,添加上参数。如下:
java -Xdebug -Xrunjdwp:server=y,transport=dt_socket,address=8000,suspend=n -jar demo.jar
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如果想深入了解Java调试,那么去看一下这个吧。深入Java调试体系
问题
如果出现Connection refused
。
首先检查一下端口8000的使用情况:
use:~/tomcat/logs # netstat -an|grep 8000
cp 0 0 127.0.0.1:8000 0.0.0.0:* LISTEN
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可见当前16808端口服务被绑定了回环地址,外部无法访问。即本地调试。
办法:
修改catalina.sh中一个参数。
if [ -z "$JPDA_TRANSPORT" ]; then
JPDA_TRANSPORT="dt_socket"
fi
if [ -z "$JPDA_ADDRESS" ]; then
JPDA_ADDRESS="0.0.0.0:8000"
fi
if [ -z "$JPDA_SUSPEND" ]; then
JPDA_SUSPEND="n"
fi
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对JPDA_ADDRESS="localhost:8000"
把默认值(localhost:8000)改成0.0.0.0:8000。默认是本地ip调试也就是无法远程调试,0.0.0.0表示所有ip地址都能调试。
远程连上后再看端口情况:
root@VM-198-217-ubuntu:/opt/apache-tomcat-8.5.16/bin# netstat -an | grep 8000
tcp 0 0 10.133.198.217:8000 60.177.99.27:49998 ESTABLISHED
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断开后是这样的:
root@VM-198-217-ubuntu:/opt/apache-tomcat-8.5.16/bin# netstat -an | grep 8000
tcp 0 0 0.0.0.0:8000 0.0.0.0:* LISTEN
tcp 0 0 10.133.198.217:8000 60.177.99.27:49998 TIME_WAIT
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idea连接远程端口进行远程debug
我已经在服务器上开启了远程调试,idea连接的步骤,直接上图。
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edit configurations
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远程调试配置
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参数配置
将红框内的地址和端口号改成自己的。
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启动远程调试
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成功界面
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请求一下试试
转自:https://blog.csdn.net/wsyw126/article/details/74853680