The type javax.servlet.http.HttpServletResponse cannot be resolved. It is indirectly referenced from required .class files

The type javax.servlet.http.HttpServletResponse cannot be resolved. It is indirectly referenced from required .class files

翻译：无法解析javax.servlet.http.HttpServletResponse类型。 它是从所需的.class文件间接引用的

https://blog.csdn.net/smartzhaomin/article/details/19487907该网址解决了

是缺少serverlet的引用库，解决如下
1.工程右键-properties->java build path
2.在java build path的libraries tab页中选择Add external Jars...按钮
3. 选择eclipse的安装目录，我的是绿色版本，我本机的路径如下，你自己需要根据自己的路径查找添加。E:\eclipse-java-indigo-SR1-win32\eclipse\plugins 选择javax.servlet.jsp_2.0.0.v201101211617.jar；javax.servlet_2.5.0.v201103041518.jar 进行添加即可
注释：由于版本不同，文件包名可能稍有区别。
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作者：smartzhaomin
来源：CSDN