下载 jetty插件  jetty-plugin.zip
解压放到 dropins 目录

eclipse版本
Eclipse IDE for Java Developers
Version: 2019-06 (4.12.0)


/Users/xxx/eclipse/java-2019-06/Eclipse.app/Contents/Eclipse/dropins
jetty-plugin
    
tree .
.
└── jetty-plugin
    ├── RJRConfigurationClasspath.png
    ├── artifacts.jar
    ├── content.jar
    ├── features
    │   ├── runjettyrun_feature_1.3.2.jar
    │   ├── runjettyrun_feature_1.3.3.201203161919.jar
    │   ├── runjettyrun_feature_support_jetty7_1.3.2.jar
    │   ├── runjettyrun_feature_support_jetty7_1.3.3.201203161919.jar
    │   ├── runjettyrun_feature_support_jetty8_1.3.2.jar
    │   └── runjettyrun_feature_support_jetty8_1.3.3.201203161919.jar
    ├── index.html
    ├── javabuildpath.png
    ├── jetty-run-configuration-1.2.1.png
    ├── jetty-run-configuration.png
    ├── plugins
    │   ├── runjettyrun.jetty7_1.3.2.jar
    │   ├── runjettyrun.jetty7_1.3.3.201203161919.jar
    │   ├── runjettyrun.jetty8_1.3.2.jar
    │   ├── runjettyrun.jetty8_1.3.3.201203161919.jar
    │   ├── runjettyrun_1.3.2.jar
    │   └── runjettyrun_1.3.3.201203161919.jar
    ├── project
    ├── site.xml
    └── web


run as / run jetty

run as / run configurations
配置 
端口号  context路径  web项目目录
port 8080
context  /
webappDir src/main/webapp




 eclipse优化  
 eclipse使用用技巧