导入javax.servlet 无法解析 [英] The import javax.servlet can't be resolved
问题描述
我正在尝试将 eclipse 用于 Java EE 来开发 Web 应用程序.
I'm trying to use eclipse for Java EE to develop web applications.
我需要使用 Tomcat 作为我的服务器.我已经下载了 Tomcat 并且它正在运行.但是我的程序无法编译.
I need to use Tomcat as my server. I've downloaded Tomcat and it's running. But my program doesn't compile.
我收到以下错误:
无法解析导入javax.servlet.
The import javax.servlet can't be resolved.
我需要做什么?
推荐答案
您需要将 Servlet API 添加到您的类路径中.在 Tomcat 6.0 中,它位于 Tomcat 的 lib
文件夹中名为 servlet-api.jar
的 JAR 中.您可以将对该 JAR 的引用添加到项目的类路径中,也可以将 JAR 的副本放入您的 Eclipse 项目中,然后从那里将其添加到类路径中.
You need to add the Servlet API to your classpath. In Tomcat 6.0, this is in a JAR called servlet-api.jar
in Tomcat's lib
folder. You can either add a reference to that JAR to the project's classpath, or put a copy of the JAR in your Eclipse project and add it to the classpath from there.
如果要将 JAR 留在 Tomcat 的 lib
文件夹中:
If you want to leave the JAR in Tomcat's lib
folder:
- 右键单击该项目,然后单击属性.
- 选择Java 构建路径.
- 点击库标签
- 点击添加外部 JAR...
- 浏览以找到
servlet-api.jar
并选择它. - 点击确定更新构建路径.
- Right-click the project, click Properties.
- Choose Java Build Path.
- Click the Libraries tab
- Click Add External JARs...
- Browse to find
servlet-api.jar
and select it. - Click OK to update the build path.
或者,如果您将 JAR 复制到您的项目中:
Or, if you copy the JAR into your project:
- 右键单击该项目,然后单击属性.
- 选择Java 构建路径.
- 点击添加 JAR...
- 在您的项目中找到
servlet-api.jar
并选择它. - 点击确定更新构建路径.
- Right-click the project, click Properties.
- Choose Java Build Path.
- Click Add JARs...
- Find
servlet-api.jar
in your project and select it. - Click OK to update the build path.
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