idea 运行maven web 工程

阳光穿透心脏的1/2处 2023-02-19 06:26 37阅读 0赞

### 1、创建maven web 工程 ###

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### 2、创建java目录 ###

在main下创建Java目录，用来编写代码，并将Java目录定义为资源文件  
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### 3、导包和编写servlet ###

<dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>javax.servlet-api</artifactId>
                <version>3.1.0</version>
                <scope>provided</scope>
            </dependency>

public class MyServlet extends HttpServlet { 
    
        @Override
        protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { 
            req.getRequestDispatcher("index.jsp").forward(req,resp);
        }
    
        @Override
        protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { 
            doGet(req,resp);
        }
    }

### 4、配置与运行 ###

在web.xml中配置servlet

<web-app>
        <servlet>
          <servlet-name>MyServlet</servlet-name>
          <servlet-class>com.lll.servlet.MyServlet</servlet-class>
        </servlet>
      <servlet-mapping>
        <servlet-name>MyServlet</servlet-name>
        <url-pattern>/*</url-pattern>
      </servlet-mapping>
    </web-app>

这里我们采用的运行方式为maven插件运行，在idea的右侧工具栏可找到maven  
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maven插件的默认tomcat版本为tomcat6，如果你的JDK的版本为1.8的话，会报错，版本不兼容。  
所以要早pom文件导入tomcat7插件

<plugin>
                        <groupId>org.apache.tomcat.maven</groupId>
                        <artifactId>tomcat7-maven-plugin</artifactId>
                        <version>2.2</version>
                        <configuration>
                            <port>9000</port>
                            <uriEncoding>UTF-8</uriEncoding>
                        </configuration>
                    </plugin>

\*\*运行：\*\*选择maven插件上方的Execute Mavne Goal按钮，填入tomcat:run，如果修改了tomcat版本为7是，运行指令为tomcat7:run  
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