Idea jar package conflict troubleshooting

     stay Java Project under development ,jar Package conflict is a common problem , It is very important to quickly locate the conflict location . The traditional way of positioning mainly adopts idea Self contained Diagrams plug-in unit , because jar Dependency is shown in charts , Lead to complicated quotation , It is often time-consuming and laborious to check ; Today, let's introduce a more conducive to rapid positioning jar Package conflicting plug-ins Maven Helper.

1.Maven Helper install , download Maven Helper

2.Maven Helper installation is complete

3.Maven Helper Use , open pom.xml file , Point lower left corner Dependency Analyzer

4. Conflicts Display conflict , Conflict related jar Show on the right , If there is a conflict on the right , You can right-click Exclude To exclude

5.All Dependencies as List Show a list of all dependencies ,Show GroupId Exhibition jar package GroupId,Show Size Exhibition jar Bag size ,All Dependencies as Tree Exhibition jar Package dependency tree .

6.jar Common exceptions to package conflicts

    When the following exceptions occur , if clean jar The project cannot be successfully started after the package , You can consider whether there is jar Packet collision .NoDefClassException、ClassNotFoundException、NoSuchMethodError、NoSuchFieldError;
These exceptions may be references to previous versions jar package , The new version of the jar Upgrade and deploy after , Path to class 、 name 、 Field changes , As a result, it cannot be loaded into the desired class or method .