springboot使用IDEA远程Debug
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，本文就来介绍一下如何使用
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：
2.1.4.RELEASE（org.springframework.boot）
jdk1.8
Apache Maven 3.5.0
1、先创建一个准备远程调试的Demo，注意构建项目的配置
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 | <?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> |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | 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]
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原文链接：https://blog.csdn.net/qq_31289187/article/details/112667136