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解决办法idea2020 03Idea Terminal 中 输入 mvn idea:idea菜单栏File -> Invadiate Cache/Restart

方法一 引入到maven库在jar包目录下mvn install:install-file -Dfile=E:\lib\saaj.jar -DgroupId=saaj -DartifactId=saaj -Dversion=1.0 -Dpackaging=jar方法二 本地引入，打包需注意project的根目录新建lib文件夹，将jar放进去，和src同层级<dependency> <groupId>saaj</groupId>

<dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus-boot-starter</artifactId> <version>3.2.0</version> <exclusions> <exclusion&

<build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> <executions> ...

配置maven到settings.xml文件，添加以下内容：<servers> <server> <id>snapshots</id> <username>https://issues.sonatype.org的注册账号</username> <passw...

Error: A JNI error has occurred, please check your installation and try againException in thread "main" java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/type/TypeReference at java.lang.Cla...