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当我们运行一个项目的时候,一般都是在本地进行debug。但是如果是一个分布式的微服务,这时候我们选择远程debug是我们开发的利器。
环境
apache-tomcat-8.5.16
Linux
如何启用远程调试
tomcat开启远程调试
方法
切换到你的tomcat的bin目录/apache-tomcat-8.5.16/bin
下,执行:
./catalina.sh jpda start
执行上面的命令就可以开启远程debug了,如果想配置一些信息,比如端口号什么的,请参考下面的说明。
参数说明
# JPDA_TRANSPORT (Optional) JPDA transport used when the "jpda start" # command is executed. The default is "dt_socket". # # JPDA_ADDRESS (Optional) Java runtime options used when the "jpda start" # command is executed. The default is localhost:8000. # # JPDA_SUSPEND (Optional) Java runtime options used when the "jpda start" # command is executed. Specifies whether JVM should suspend # execution immediately after startup. Default is "n". # # JPDA_OPTS (Optional) Java runtime options used when the "jpda start" # command is executed. If used, JPDA_TRANSPORT, JPDA_ADDRESS, # and JPDA_SUSPEND are ignored. Thus, all required jpda # options MUST be specified. The default is: # # -agentlib:jdwp=transport=$JPDA_TRANSPORT, # address=$JPDA_ADDRESS,server=y,suspend=$JPDA_SUSPEND
操作说明
所以如果想修改配置,则如下操作:
在catalina.sh中进行配置:
JPDA_TRANSPORT=dt_socket JPDA_ADDRESS=5005 JPAD_SUSPEND=n
或者通过JPDA_OPTS进行配置:
JPDA_OPTS='-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5005'
springboot开启远程调试
远程调试maven设置
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>
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"
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