SpringBoot+Maven：Could not find or load main class java问题
问题描述
环境：springboot2+maven
场景：mvn clean install后直接运行jar包提示找不到主类/jar包中没有主清单属性
问题：Error: Could not find or load main class java
解决方法
pom里面指定build构建属性
<build>
<resources>
<resource>
<directory>src/main/javadirectory>
<includes>
<include>**/*.propertiesinclude>
<include>**/*.xmlinclude>
includes>
<filtering>falsefiltering>
resource>
<resource>
<directory>src/main/resourcesdirectory>
resource>
resources>
<plugins>
<plugin>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-compiler-pluginartifactId>
<version>3.1version>
<configuration>
<skip>trueskip>
<compilerId>javaccompilerId>
<source>1.8source>
<target>1.8target>
<encoding>UTF-8encoding>
<compilerVersion>1.8compilerVersion>
<verbose>trueverbose>
<optimize>trueoptimize>
configuration>
<dependencies>
<dependency>
<groupId>org.codehaus.plexusgroupId>
<artifactId>plexus-compiler-eclipseartifactId>
<version>2.2version>
dependency>
dependencies>
plugin>
<plugin>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-resources-pluginartifactId>
<version>3.0.1version>
<configuration>
<includeEmptyDirs>trueincludeEmptyDirs>
configuration>
plugin>
<plugin>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-war-pluginartifactId>
<version>2.1.1version>
<configuration>
<failOnMissingWebXml>falsefailOnMissingWebXml>
<warSourceExcludes>upload/**warSourceExcludes>
configuration>
plugin>
<plugin>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-maven-pluginartifactId>
<version>2.0.4.RELEASEversion>
<executions>
<execution>
<goals>
<goal>repackagegoal>
goals>
execution>
executions>
plugin>
plugins>
build>即可解决。
完整的pom.xml如下，有需要可以参考。
<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0modelVersion>
<groupId>com.tcbjgroupId>
<artifactId>spring-boot-tcbjartifactId>
<version>1.0-SNAPSHOTversion>
<packaging>jarpackaging>
<properties>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding>
<java.version>1.8java.version>
properties>
<repositories>
<repository>
<id>alimavenid>
<name>aliyun mavenname>
<url>http://maven.aliyun.com/nexus/content/groups/public/url>
repository>
repositories>
<parent>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-parentartifactId>
<version>2.0.1.RELEASEversion>
parent>
<dependencies>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-devtoolsartifactId>
<optional>trueoptional>
<scope>providedscope>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>fastjsonartifactId>
<version>1.2.44version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>springloadedartifactId>
<version>1.2.6.RELEASEversion>
dependency>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<scope>testscope>
dependency>
<dependency>
<groupId>javax.xml.bindgroupId>
<artifactId>jaxb-apiartifactId>
dependency>
<dependency>
<groupId>com.sun.xml.bindgroupId>
<artifactId>jaxb-implartifactId>
<version>2.3.0version>
dependency>
<dependency>
<groupId>com.sun.xml.bindgroupId>
<artifactId>jaxb-coreartifactId>
<version>2.3.0version>
dependency>
<dependency>
<groupId>javax.activationgroupId>
<artifactId>activationartifactId>
<version>1.1.1version>
dependency>
<dependency>
<groupId>org.apache.velocitygroupId>
<artifactId>velocityartifactId>
<version>1.7version>
dependency>
<dependency>
<groupId>cn.hutoolgroupId>
<artifactId>hutool-allartifactId>
<version>4.1.0version>
dependency>
dependencies>
<build>
<resources>
<resource>
<directory>src/main/javadirectory>
<includes>
<include>**/*.propertiesinclude>
<include>**/*.xmlinclude>
includes>
<filtering>falsefiltering>
resource>
<resource>
<directory>src/main/resourcesdirectory>
resource>
resources>
<plugins>
<plugin>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-compiler-pluginartifactId>
<version>3.1version>
<configuration>
<skip>trueskip>
<compilerId>javaccompilerId>
<source>1.8source>
<target>1.8target>
<encoding>UTF-8encoding>
<compilerVersion>1.8compilerVersion>
<verbose>trueverbose>
<optimize>trueoptimize>
configuration>
<dependencies>
<dependency>
<groupId>org.codehaus.plexusgroupId>
<artifactId>plexus-compiler-eclipseartifactId>
<version>2.2version>
dependency>
dependencies>
plugin>
<plugin>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-resources-pluginartifactId>
<version>3.0.1version>
<configuration>
<includeEmptyDirs>trueincludeEmptyDirs>
configuration>
plugin>
<plugin>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-war-pluginartifactId>
<version>2.1.1version>
<configuration>
<failOnMissingWebXml>falsefailOnMissingWebXml>
<warSourceExcludes>upload/**warSourceExcludes>
configuration>
plugin>
<plugin>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-maven-pluginartifactId>
<version>2.0.4.RELEASEversion>
<executions>
<execution>
<goals>
<goal>repackagegoal>
goals>
execution>
executions>
plugin>
plugins>
build>
project>