Scenario: When you do maven Web development, the dependency jar is not put under Src/main/webapp/web-inf/lib, which is not the same as when we use Eclipse development tools for Web development. How can you only copy the dependent jar package to the corresponding Lib directory at compile time? Technical keywords: How to perform the corresponding goal at some stage of the corresponding life cycle
1. Execute the maven-dependency-plugin:copy-dependencies command in the compile phase of the default life cycle: <plugin> <groupId>org.apache.maven.plugins</groupId> < artifactid>maven-dependency-plugin</artifactid> <executions> <execution> <id>install </id> <phase>install</phase> <goals> <goal>sources</goal> </goals> </ execution> <execution> <id>compile</id> <phase>compile</phase> <goals> < goal>copy-dependencies</goal> </goals> <configuration> <outputdirectory>src/main/ webapp/web-inf/lib</outputdirectory> </configuration> </execution> </executions> </ Plugin> 2. When a change is made to a dependent jar package, the clean lifecycle should be performed, and all old jar packages should be removed so that the Web-inf/lib and Maven dependency management jar packages are consistent. <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactid>maven-clean-plugin</ Artifactid> <executions> <execution> <id>clean</id> <phase>pre-clean</phase> <goals> <goal> clean</goal> </goals> <configuration> <directory>src/main/webapp/web-inf/lib</ directory> </configuration> </execution> </executions> </plugin>
