对span标签设置值 → https://www.baidu.com/s?wd=%E5%AF%B9span%E6%A0%87%E7%AD%BE%E8%AE%BE%E7%BD%AE%E5%80%BC
Jquery 关于span标签的取值赋值用法 → https://www.cnblogs.com/seeusmile-cnblog/p/6211264.html
1 //赋值
2
3 $("#spanid").html(value)
4
5 //取值
6
7 $("#spanid").text()
缺少javax.servlet.http.HttpServlet包，项目中配置Tomcat服务器就可以了 → https://www.baidu.com/s?wd=javax.servlet.http.HttpServlet（百度搜索）
eclipse项目上有红叉 → https://www.baidu.com/s?ie=utf-8&f=3&rsv_bp=1&tn=baidu&wd=eclipse%E9%A1%B9%E7%9B%AE%E4%B8%8A%E6%9C%89%E7%BA%A2%E5%8F%89&oq=eclipse&rsv_pq=c2d900cf0001039d&rsv_t=553bxv7bwY8nPHY82ruyxHFs1zGi2C1bFjV2M%2F%2FfcAS0O01299ggDJHB9cU&rqlang=cn&rsv_enter=1&rsv_dl=ts_0&rsv_sug3=15&rsv_sug1=2&rsv_sug7=100&rsv_sug2=0&prefixsug=eclipse%25E9%25A1%25B9%25E7%259B%25AE%25E4%25B8%258A&rsp=0&inputT=7254&rsv_sug4=7381
Eclipse项目名显示红叉 → https://jingyan.baidu.com/article/af9f5a2d7c196743140a4533.html
深入理解Java枚举类型(enum) → https://www.cnblogs.com/alter888/p/9163612.html
springboot打包时程序包net.sf.json不存在→ https://www.baidu.com/s?wd=springboot%E6%89%93%E5%8C%85%E6%97%B6%E7%A8%8B%E5%BA%8F%E5%8C%85net.sf.json%E4%B8%8D%E5%AD%98%E5%9C%A8
IDEA导入maven中导入net.sf.json报错的解决方法 → https://www.cnblogs.com/keaihaizi/p/10834602.html
maven项目中引入net.sf.json包报错，解决方法→ https://blog.csdn.net/u012655663/article/details/79678822
在Pom.xml中加入：
1 <!-- JSON -->
2 <dependency>
3 <groupId>net.sf.json-lib</groupId>
4 <artifactId>json-lib</artifactId>
5 <version>2.4</version>
6 <classifier>jdk15</classifier>
7 </dependency>
AS与Pycharm git push报错：Invocation failed Server returned invalid Response, Authentication failed→ https://blog.csdn.net/BierOne/article/details/104554097
Push failed Invocation failed Server returned invalid Response. java.lang.Ru.....→https://www.baidu.com/s?wd=Push+failed+Invocation+failed+Server+returned+invalid+Response.+java.lang.RuntimeException%3A+Invocation+failed+Server+returned+invalid+Response.