可學(xué)習(xí)到：
- 設(shè)置環(huán)境變量方便運(yùn)行命令和編譯程序。
- servlet-api.jar中包括了servlet相關(guān)的api和類
- tomcat是servlet的容器骤肛，沒有容器程序跑不起來(lái)酱吝。
tomcat
下載地址：http://tomcat.apache.org/
我下載的是：apache-tomcat-7.0.67.tar.gz
解壓開之后放到usr/local目錄中
tomcat目錄
啟動(dòng)
/usr/local/apache-tomcat-7.0.67/bin/startup.sh
設(shè)置環(huán)境變量
在.bash_profile文件中設(shè)置
export PATH=$PATH:/usr/local/apache-tomcat-7.0.67/bin
編寫程序
把tomcat/bin目錄下的servlet-api.jar放到程序目錄
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class HelloServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
PrintWriter pw = resp.getWriter();//得到一個(gè)輸出流
//寫給Client端一個(gè)簡(jiǎn)單網(wǎng)頁(yè)信息
pw.println("<html><head></head><body>Server:Hello Client~</body></html>");
pw.flush();
pw.close();
super.doGet(req, resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
super.doPost(req, resp);
}
}
編譯
javac -cp /Users/Mac/Desktop/Dev/qq/servlet-api.jar /Users/Mac/Desktop/Dev/qq/HelloServlet.java
設(shè)置classpath
在.bash_profile文件中設(shè)置
export CATALINA=/usr/local/apache-tomcat-7.0.67
export CLASSPATH=$CATALINA/lib/servlet-api.jar:$CLASSPATH
編譯
javac /Users/Mac/Desktop/Dev/qq/HelloServlet.java
新建webapp
在tomcat 的webapps新建一個(gè)目錄如下
mywebapp
編寫web.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0"
metadata-complete="true">
<servlet>
<servlet-name>hello</servlet-name>
<servlet-class>HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>hello</servlet-name>
<url-pattern>/hello</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>hello</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
訪問http://localhost:8080/MyWebApp/hello
輸出
Server:Hello Client~
參考
http://blog.csdn.net/xiaominghimi/article/details/7603133
http://blog.csdn.net/xiaominghimi/article/details/7603134
http://www.iitshare.com/under-the-cmd-compile-the-java.html
