springboot使用IDEA远程Debug

项目上线之后,如果日志打印的很模糊或者业务逻辑比较复杂,有时候无法定位具体的错误原因,因此可以通过IDEA远程代理进行Debug。

线上的代码一定要和本地的一致!

环境:

 1、先创建一个准备远程调试的Demo,注意构建项目的配置

<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.4.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.remote.test</groupId> <artifactId>remote_test</artifactId> <version>0.0.1-SNAPSHOT</version> <name>remote_test</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.junit.jupiter</groupId> <artifactId>junit-jupiter-api</artifactId> <version>RELEASE</version> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <version>2.2</version> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <version>2.1.4.RELEASE</version> </dependency> </dependencies> <configuration> <keepDependenciesWithProvidedScope>true</keepDependenciesWithProvidedScope> <createDependencyReducedPom>false</createDependencyReducedPom> <filters> <filter> <artifact>*:*</artifact> <excludes> <exclude>META-INF/*.SF</exclude> <exclude>META-INF/*.DSA</exclude> <exclude>META-INF/*.RSA</exclude> </excludes> </filter> </filters> </configuration> <executions> <execution> <phase>package</phase> <goals> <goal>shade</goal> </goals> <configuration> <finalName>${project.artifactId}-${project.version}-all</finalName> <transformers> <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer"> <resource>META-INF/spring.handlers</resource> </transformer> <transformer implementation="org.springframework.boot.maven.PropertiesMergingResourceTransformer"> <resource>META-INF/spring.factories</resource> </transformer> <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer"> <resource>META-INF/spring.schemas</resource> </transformer> <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/> <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer"> <!--根据项目的全名指定启动类--> <mainClass>com.remote.test.remote_test.RemoteTestApplication</mainClass> </transformer> </transformers> </configuration> </execution> </executions> </plugin> </plugins> </build> </project>

package com.remote.test.remote_test; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController; import java.util.HashMap; import java.util.Map; @RestController @RequestMapping("remote/test") public class UserController { private static final Logger logger = LoggerFactory.getLogger(UserController.class); @PostMapping("selectByUserId") public String selectUserInfo(@RequestParam("userId") String userId) { try { Map<String,Object> userInfo = new HashMap<>(); userInfo.put("userId",userId); userInfo.put("age",23); userInfo.put("name","yanshao"); userInfo.put("address","shanghai"); logger.info("Query user information by user ID. userInfo: {}",userInfo.toString()); return this.success(userInfo); } catch (Exception e) { logger.error("Query user information by user ID. userId:{} ", userId, e); return this.fail(); } } private String success(Object data){ Map<String,Object> res = new HashMap<>(); res.put("code",0); res.put("desc","success"); res.put("data",data); return res.toString(); } private String fail(){ Map<String,Object> res = new HashMap<>(); res.put("code",1); res.put("desc","fail"); return res.toString(); } }

2、打包

输入:mvn clean package,(大概需要等几分钟),最好在构建之前指定本地repository,就不需要重新下载jar包了。

3、在IDEA配置远程Debug

指定socket port = 8081,指定准备debug的模块

4、在终端启动刚才打好的jar包

a. 先在IDEA启动debug

b. 然后在终端输入命令:java -agentlib:jdwp=transport=dt_socket,server=n,address=localhost:8081 -jar remote_test-0.0.1-SNAPSHOT-all.jar

5、测试

在准备请求的接口上标记断点

注意:必须先在IDEA启动Debug,然后再启动项目

➜ Desktop java -agentlib:jdwp=transport=dt_socket,server=n,address=localhost:8081 -jar remote_test-0.0.1-SNAPSHOT-all.jar

ERROR: transport error 202: connect failed: Connection refused
ERROR: JDWP Transport dt_socket failed to initialize, TRANSPORT_INIT(510)
JDWP exit error AGENT_ERROR_TRANSPORT_INIT(197): No transports initialized [debugInit.c:750]

到此这篇关于springboot使用IDEA远程Debug的文章就介绍到这了,更多相关springboot IDEA远程Debug内容请搜索趣讯吧以前的文章或继续浏览下面的相关文章希望大家以后多多支持趣讯吧!

发布于 2021-06-09 07:59:09
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