问：eclipse中执行build.xml文件的时候总是弹出“Building workspace has encountered a problem. Errors during build”
答：JRE错误，选中项目，点击右键——preferences——Builders——双击右侧"build.xml[Builder]"，在弹出的窗口中找到JRE选项卡，发现它上面有错误标识，去掉“Separate JRE”的勾选，选择“Run in the same JRE as the workspace”
注：由于异常出现在公司项目，无法提供图片