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SpringBootrhr如何解决jar包冲突的问题

发布时间:2021-09-28 09:09:49 来源:亿速云 阅读:120 作者:柒染 栏目:开发技术

SpringBootrhr如何解决jar包冲突的问题,针对这个问题,这篇文章详细介绍了相对应的分析和解答,希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。

SpringBoot解决jar包冲突

今天SpringBoot项目打包发现一直在报错

包jar包冲突,找了好久才找到结果,所以这里写一篇博客记录一下,并提供正确的解决方案

上图:

SpringBootrhr如何解决jar包冲突的问题 SpringBootrhr如何解决jar包冲突的问题

说一下:首先,你给的方法很泛(不是烦没打错字)只是市面上大多数可以解决的套路,

再者,你给的解决方案并没有真正的解决问题。所以我留下一句话:不喜勿喷。

SpringBoot事实上是很好的,jar包冲突的时候,它是有提醒你了的,启动第一行就说了有多个类路径jar包存在:Class path contains multiple SLF4J bindings.

SpringBoot适合于小团队及个人开发。是比较方便的。

为什么我要写这篇博客呢,因为我看到jar冲突的真正原因后,很生气,因为原因并不一定在SpringBoot 我这里查出的是腾讯云的cos-api也引入的了日志jar,所以导致冲突,这里是SpringBoot引入cos-api,你就说SpringBoot,如果SpringBoot是被被人引入的,你是不是也要说其他的工具不好呢???再者不好你为什么要用,要记录???这只不过是想比较而言,技术没有老旧,没有好坏,只有喜欢,不喜欢,很多时候有些公司用的还是一二十年前的技术,可能是有些原因不能更换,但是我相信,它能存在在这个世上并风靡一时,说明它一定有它的独特之处。

接下来就是,

我查到的一个解决方案,可使用所有jar包冲突问题

以eclipse为例:

这样的开发工具都会有一个功能:就是查询jar包直接引入/jar包间接引入的功能

SpringBootrhr如何解决jar包冲突的问题

如果你不知道你使用的工具怎么找到这个查找页面:百度搜索:eclipse 看引入jar 包的联系(idea同理)

说实话idea的更清晰一些,它是图形化界面

找到冲突的jar包,去除冲突的包即可

代码如下:

<dependency>
	      <groupId>com.qcloud</groupId>
	      <artifactId>cos_api</artifactId>
	      <version>5.5.3</version>
	      <exclusions> 
	            <!-- <exclusion> 
	                <groupId>ch.qos.logback</groupId> 
	                <artifactId>logback-classic</artifactId> 
	            </exclusion> -->
	            <exclusion>
	                <groupId>org.slf4j</groupId>
	                <artifactId>slf4j-log4j12</artifactId>
	            </exclusion> 
	        </exclusions>
		</dependency>

声明:我只是对SpirngBoot报不平,没有对任何人做人身攻击。不喜勿喷

spring boot jar冲突问题集锦

总结下spring boot项目搭建过程中,冲突解决的一些小经验

1、日志jar包冲突

1.1、日志主要是spring boot自带spring-boot-starter-logging的排除

一是要用log4j2,二是xdcs不排除这个也会有冲突。(隐秘程度:低;重要程度:高)

<exclusion>
<artifactId>spring-boot-starter-logging</artifactId>
<groupId>org.springframework.boot</groupId>
</exclusion>

1.2、引的日志jar颇多

可能会有别的jar里也带了冲突的class,但是不影响启动,属于可排可不排。可能会导致测试环境起不来。(隐秘程度:低;重要程度:高)

//这是举个例子
<exclusion>
<artifactId>slf4j-log4j12</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/Users/xmly/.m2/repository/org/apache/logging/log4j/log4j-slf4j-impl/2.11.2/log4j-slf4j-impl-2.11.2.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/Users/xmly/.m2/repository/org/slf4j/slf4j-log4j12/1.7.5/slf4j-log4j12-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory]
//这是启动时对应的报错,经检验,这个不影响启动

2、本地ok,测试环境失败之mainstay

发测试时,出现过mainstay的yml解析失败的问题,maven helper排jar包并未显示有冲突,tree搜索mainstay,发现了一些猫腻。passport-sso-api(0.0.14-M3,下面用到的也是这个版本)这个jar包里包含了这个mainstay的jar,最终导致了解析失败。后续登录验证可以接下网关鉴权等方式,这个jar冲突应该就不会出现了。(隐秘程度:高;重要程度:中)

<exclusion>
<artifactId>mainstay-rpc-thrift</artifactId>
<groupId>com.ximalaya.mainstay</groupId>
</exclusion>

3、本地ok,测试环境失败之servlet

发测试时,出现过servlet2和spring boot内置tomcat class重名冲突的问题,一般主要passport-sso-api和xdcs默认会带这个,排掉即可(隐秘程度:中;重要程度:高)

<exclusion>
<artifactId>servlet-api</artifactId>
<groupId>javax.servlet</groupId>
</exclusion>

4、本地ok,测试环境失败之tomcat

发测试时,也出现过passport-sso-api这个jar包里包含的spring-instrument-tomcat和spring boot内置tomcat冲突,排掉即可。后续登录验证可以接下网关鉴权等方式,这个jar冲突应该就不会出现了。(隐秘程度:高;重要程度:中)

<exclusion>
<artifactId>spring-instrument-tomcat</artifactId>
<groupId>org.springframework</groupId>
</exclusion>

5、本地ok,测试环境失败之spring asm

测试环境出现过passport-sso-api里spring asm与spring-boot-test-start冲突的情况,排掉排掉。passport-sso-api这个jar包含的jar比较多,后面建议用注解或者网关鉴权来做登录控制。(隐秘程度:高;重要程度:中)

<exclusion>
<artifactId>spring-asm</artifactId>
<groupId>org.springframework</groupId>
</exclusion>

6、万恶的测试环境字节码验证失败

之前发过一个前项目改造的spring boot项目就出现过,当时不以为意,让jvm参数加了-noverify就没管,后来发现很多项目都有这个问题,开始排查。之前看过jdk和aspectj有冲突的例子,就开始tree里搜aspectj,发现spring-boot-start-aop里引入了1.9.4版本的aspectjweaver,但是当时因为maven helper提示它冲突,就把它排了,后重新排掉所有1.7版本的aspectj,引入1.9.4版本的,解决。(隐秘程度:高;重要程度:高)

<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjtools</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectj.version}</version>
</dependency>
<exclusion>
<artifactId>*</artifactId>
<groupId>org.aspectj</groupId>
</exclusion>

7、日志不能正常输出问题

排除,日志桥接混乱,后台配置的日志格式不支持了

<exclusion>
    <artifactId>slf4j-log4j12</artifactId>
    <groupId>org.slf4j</groupId>
</exclusion>
Configuration:
  status: info
  Properties:
    Property:
      - name: log.level.console
        value: info
      - name: log.path
        value: /var/XXX/weXXX
      - name: project.name
        value: weXXX
      - name: log.pattern
        value: "%-d{yyyy-MM-dd HH:mm:ss SS} [%c]-[%p] %m%n"
  Appenders:
    Console:
      name: CONSOLE
      target: SYSTEM_OUT
      PatternLayout:
        pattern: ${log.pattern}
    RollingRandomAccessFile:
      - name: APP_FILE
        fileName: ${log.path}/${project.name}.log
        filePattern: "${log.path}/${project.name}-%d{yyyy-MM-dd}.log"
        PatternLayout:
          pattern: ${log.pattern}
        Filters:
          ThresholdFilter:
            - level: info
              onMatch: ACCEPT
              onMismatch: DENY
        Policies:
          TimeBasedTriggeringPolicy:
            modulate: true
            interval: 1
        DefaultRolloverStrategy:
          max: 30
  Loggers:
    Root:
      level: info
      AppenderRef:
        - ref: CONSOLE
        - ref: APP_FILE
    Logger:
      - name: app
        level: info
        additivity: false
        AppenderRef:
          - ref: CONSOLE
          - ref: APP_FILE

8、本地打包正常

测试或者线上环境打包失败,查看wrap.log日志,本地配置文件使用线上,打包测试;

spring-boot-maven-plugin插件放在靠后位置,不然打包失败;

<profile>
    <id>uat</id>
    <properties>
        <profileActive>UatXXX</profileActive>
    </properties>
    <build>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>appassembler-maven-plugin</artifactId>
                <version>2.0.0</version>
                <configuration>
                    <configurationDirectory>conf</configurationDirectory>
                    <repositoryLayout>flat</repositoryLayout>
                    <useWildcardClassPath>true</useWildcardClassPath>
                    <daemons>
                        <daemon>
                            <id>${project.artifactId}</id>
                            <mainClass>com.XXXX.Application</mainClass>
                            <commandLineArguments>
                                <commandLineArgument>--spring.profiles.active=${profileActive}
                                </commandLineArgument>
                            </commandLineArguments>
                            <platforms>
                                <platform>jsw</platform>
                            </platforms>
                            <jvmSettings>
                                <!-- 启动内存配置 -->
                                <initialMemorySize>2048M</initialMemorySize>
                                <maxMemorySize>2048M</maxMemorySize>
                                <maxStackSize>128</maxStackSize>
                                <systemProperties>
                                    <systemProperty>application.root=.</systemProperty>
                                    <systemProperty>spring.application.name=${project.artifactId}
                                    </systemProperty>
                                    <systemProperty>spring.config.location=./conf/${profileActive}/
                                    </systemProperty>
                                </systemProperties>
                                <extraArguments>
                                    <extraArgument>-XX:MetaspaceSize=256M</extraArgument>
                                    <extraArgument>-XX:MaxMetaspaceSize=256M</extraArgument>
                                    <extraArgument>-XX:+UseG1GC</extraArgument>
                                    <extraArgument>-XX:-OmitStackTraceInFastThrow</extraArgument>
                                    <extraArgument>-XX:MaxGCPauseMillis=100</extraArgument>
                                    <extraArgument>-XX:+ParallelRefProcEnabled</extraArgument>
                                    <extraArgument>-XX:+HeapDumpOnOutOfMemoryError</extraArgument>
                                    <extraArgument>-XX:+PrintCommandLineFlags</extraArgument>
                                    <extraArgument>-XX:+PrintGCDetails</extraArgument>
                                    <extraArgument>-XX:+PrintGCDateStamps</extraArgument>
                                    <extraArgument>-verbose:class</extraArgument>
                                    <extraArgument>-XX:+PrintClassHistogramBeforeFullGC</extraArgument>
                                    <extraArgument>-XX:+PrintClassHistogramAfterFullGC</extraArgument>
                                    <extraArgument>-XX:+PrintTenuringDistribution</extraArgument>
                                    <extraArgument>-XX:+PrintHeapAtGC</extraArgument>
                                    <extraArgument>-XX:+PrintGCApplicationStoppedTime</extraArgument>
                                    <extraArgument>-XX:+PrintGCApplicationConcurrentTime</extraArgument>
                                    <extraArgument>-Xloggc:/var/log/${project.artifactId}/gc-%t</extraArgument>
                                    <extraArgument>-XX:+UseGCLogFileRotation</extraArgument>
                                    <extraArgument>-XX:GCLogFileSize=10M</extraArgument>
                                    <extraArgument>-XX:NumberOfGCLogFiles=10</extraArgument>
                                    <extraArgument>-javaagent:/opt/jars/aspectjweaver-1.8.9.jar</extraArgument>
                                </extraArguments>
                            </jvmSettings>
                            <generatorConfigurations>
                                <generatorConfiguration>
                                    <generator>jsw</generator>
                                    <includes>
                                        <include>linux-x86-64</include>
                                        <include>macosx-universal-64</include>
                                    </includes>
                                    <configuration>
                                        <property>
                                            <name>configuration.directory.in.classpath.first</name>
                                            <value>conf</value>
                                        </property>
                                        <property>
                                            <name>wrapper.ping.timeout</name>
                                            <value>60</value>
                                        </property>
                                        <property>
                                            <name>set.default.REPO_DIR</name>
                                            <value>lib</value>
                                        </property>
                                        <property>
                                            <name>wrapper.logfile</name>
                                            <value>/var/XXXX/${project.artifactId}/wrapper.YYYYMMDD.log</value>
                                        </property>
                                        <property>
                                            <name>wrapper.logfile.rollmode</name>
                                            <value>DATE</value>
                                        </property>
                                        <property>
                                            <name>wrapper.logfile.maxfiles</name>
                                            <value>10</value>
                                        </property>
                                        <property>
                                            <name>wrapper.pidfile</name>
                                            <value>/var/XXXX//${project.artifactId}</value>
                                        </property>
                                        <property>
                                            <name>wrapper.java.command</name>
                                            <value>/usr/local/jdk8/bin/java</value>
                                        </property>
                                        <property>
                                            <name>wrapper.disable_restarts</name>
                                            <value>TRUE</value>
                                        </property>
                                        <property>
                                            <name>wrapper.jvm_exit.timeout</name>
                                            <value>5</value>
                                        </property>
                                        <property>
                                            <name>wrapper.shutdown.timeout</name>
                                            <value>5</value>
                                        </property>
                                        <property>
                                            <name>wrapper.cpu.timeout</name>
                                            <value>0</value>
                                        </property>
                                    </configuration>
                                </generatorConfiguration>
                            </generatorConfigurations>
                        </daemon>
                    </daemons>
                </configuration>
                <executions>
                    <execution>
                        <id>generate-jsw</id>
                        <phase>package</phase>
                        <goals>
                            <goal>generate-daemons</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <configuration>
                    <descriptors>
                        <descriptor>src/main/assembly/assembly.xml</descriptor>
                    </descriptors>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>${spring.boot.version}</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>build-info</goal>
                        </goals>
                        <configuration>
                            <additionalProperties>
                                <encoding.source>UTF-8</encoding.source>
                                <encoding.reporting>UTF-8</encoding.reporting>
                                <java.source>${java.version}</java.source>
                                <java.target>${java.version}</java.target>
                            </additionalProperties>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</profile>

tips:

1、不要太相信maven helper提示的jar冲突,具体还是要具体分析

2、有些jar冲突网上容易查到,有些基本查不到,可以先去tree搜个短名看看,看看有没有相似的jar,再去查是否真的会有冲突

3、有些是class冲突,找到对应的jar排掉即可,尽量别排spring自带的,容易出现兼容性问题

4、启动时,我已经将一些不必须的autoConfigure排掉了,真要用到,记得放出来,平时用不到的尽量排掉,这样就不会去加载了,不然很多都是默认加载的。

关于SpringBootrhr如何解决jar包冲突的问题问题的解答就分享到这里了,希望以上内容可以对大家有一定的帮助,如果你还有很多疑惑没有解开,可以关注亿速云行业资讯频道了解更多相关知识。

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