struts2查看ActionSupport源码报错如下
解决办法:< http://www.2cto.com/kf/ware/vc/" target="_blank" class="keylink">vc3Ryb25nPjwvcD4KPHA+MS7PwtTYeHdvcmstY29yZS0yLjEuNi1zb3VyY2VzLmphcjwvcD4KPHA+Mi694tG5amFyzsS8/ijO0r3i0bnBy9TaeHdvcmstY29yZS0yLjEuNi1zb3VyY2Vz1tApPC9wPgo8cD4zLsi3saPP7sS/bGli0tS8sM/uxL/W0La80v3I68HLeHdvcmstMi4xLjYuamFyPC9wPgo8cD40LrC01dXPws28sr3W6LLZ1/e8tL/JPC9wPgo8cD48aW1nIHNyYz0="https://www.cppentry.com/upload_files/article/76/1_vklv0__.jpg" alt="\">
如果导入源码过程中出现错误：An internal error occurred during: "Refreshing external folders"
这时候把项目关闭，然后重新打开项目导入源码即可。