mvnw Network Issue

Symptom

A proxy is required for the compilation environment to access the Internet.

Key Process and Cause Analysis

The mvnw file in the source code can be used for compilation. mvnw automatically downloads the required Maven version, eliminating the need to manually install Maven. If a proxy is required for the compilation environment to access the Internet, you need to configure a proxy for mvnw too.

Conclusion and Solution

1. Open the mvnw file.

   vim mvnw

2. Press i to enter the insert mode and add the following proxy code to line 227:

   "-Dhttp.proxyHost=127.0.0.1""-Dhttp.proxyPort=3128" "-Dhttps.proxyHost=127.0.0.1""-Dhttps.proxyPort=3128" \

   In the preceding example, 127.0.0.1 and 3128 indicate the IP address and port number of the proxy host. Replace them with the actual ones.

   

3. Press Esc, type :wq!, and press Enter to save the file and exit.
4. Run the compile command again.

   mvn clean install