eclipse 我的 JDK 中没有 javax.servlet 包
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There is no javax.servlet package in my JDK
提问by Little Child
I am following Head First: Servlet and JSPand I was writing my first Servlet.
I tried to compile it using command line and I got an error that package javax.servletdoes not exist.
我正在关注Head First: Servlet and JSP并且正在编写我的第一个 Servlet。
我尝试使用命令行编译它，但出现了一个package javax.servlet不存在的错误。
So far, I have set the JAVA_HOMEvariable to the value: C:\Program Files\Java\jdk1.7.0_11and the PATHvariable also to C:\Program Files\Java\jdk1.7.0_11\bin
到目前为止，我已经将JAVA_HOME变量设置为 value:C:\Program Files\Java\jdk1.7.0_11并且PATH变量也设置为C:\Program Files\Java\jdk1.7.0_11\bin
How do I get the javax.servletpackage?
我如何获得javax.servlet包裹？
Also, I have installed JDK 7 update 11after the applet bug that was being exploited.
I have both JDK Update 11and JDK Update 9installed.
Should I get rid of Update 9or is it not needed ?
另外，我JDK 7 update 11在被利用的小程序错误之后安装了。
我都JDK Update 11和JDK Update 9安装。
我应该摆脱Update 9还是不需要？
Misc
杂项
Operating System:Windows 7 Home Premium 32 bit
操作系统：Windows 7 家庭高级版 32 位
What I also tried:
我也尝试过：
javac -cp .;D:\Program Files\apache-tomcat-7.0.35-windows-x86\apache-tomcat-7.0.35\lib\servlet-api.jar Ch1servlet.java
javac -cp .;D:\Program Files\apache-tomcat-7.0.35-windows-x86\apache-tomcat-7.0.35\lib\servlet-api.jar Ch1servlet.java
I tried both forward slash AND backward slash. In both the cases I got an invalid flag error.
我尝试了正斜杠和反斜杠。在这两种情况下，我都收到了无效标志错误。
回答by Ian Roberts
javac -cp .;D:\Program Files\apache-tomcat-7.0.35-windows-x86\apache-tomcat-7.0.35\lib\servlet-api.jar Ch1servlet.java
You're 99% of the way there, you just need to put some extra quotes in because the path to your servlet API jar contains spaces. Try this:
您已经完成了 99% 的工作，您只需要添加一些额外的引号，因为 servlet API jar 的路径包含空格。尝试这个：
javac -cp ".;D:\Program Files\apache-tomcat-7.0.35-windows-x86\apache-tomcat-7.0.35\lib\servlet-api.jar" Ch1servlet.java
回答by TheWhiteRabbit
It will not be because
不会是因为
- Servlets are part of Java-EE and not Java-SE
- You need to download and add java-ee libraries if you need to use servlets
- Servlet 是 Java-EE 而不是 Java-SE 的一部分
- 如果需要使用servlet，需要下载并添加java-ee库
