Java 无法在Eclipse中通过Maven启动tomcat_Java_Eclipse_Maven_Tomcat_Web Applications

Java 无法在Eclipse中通过Maven启动tomcat

java eclipse maven tomcat web-applications

Java 无法在Eclipse中通过Maven启动tomcat,java,eclipse,maven,tomcat,web-applications,Java,Eclipse,Maven,Tomcat,Web Applications,在Eclipse中，通过运行web应用程序时，我遇到以下异常。在eclipse中，我右键单击项目，运行方式->运行配置..->目标-tomcat7：跑步不确定为什么我不能运行我的web应用程序。谷歌搜索并尝试了许多选项，但无法纠正。这个问题的解决办法是什么在tomcat配置中，我添加了以下内容 <role rolename="manager"/> <role rolename="manager-gui"/> <role rolename="admin"/&g

在Eclipse中，通过运行web应用程序时，我遇到以下异常。在eclipse中，我右键单击项目，运行方式->运行配置..->目标-tomcat7：跑步

不确定为什么我不能运行我的web应用程序。谷歌搜索并尝试了许多选项，但无法纠正。这个问题的解决办法是什么

在tomcat配置中，我添加了以下内容

<role rolename="manager"/>
 <role rolename="manager-gui"/>
 <role rolename="admin"/>
 <user username="admin" password="admin" roles="admin,manager,manager-gui"/>

这是我的POM.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.expense</groupId>
    <artifactId>ExpenseProject</artifactId>
    <packaging>war</packaging>
    <version>0.0.1-SNAPSHOT</version>
    <name>Expense Project</name>
    <url>http://maven.apache.org</url>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.3.2</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
                <configuration>
                    <mode>war</mode>
                    <url>http://localhost:8080/manager/html</url>
                    <server>TomcatServer</server>
                    <path>/ExpenseProject</path>
                </configuration>
            </plugin>



            <!-- Maven Tomcat Plugin <plugin> <groupId>org.codehaus.mojo</groupId> 
                <artifactId>tomcat-maven-plugin</artifactId> <configuration> <url>http://localhost:8080/manager/html</url> 
                <server>Apache_Tomcat_7_x86</server> <username>admin</username> <password>password</password> 
                <path>/HelloWorld</path> </configuration> </plugin> -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.3</version>
                <configuration>
                    <packagingExcludes>WEB-INF/web.xml</packagingExcludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>3.2.0.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>3.2.0.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>3.2.0.RELEASE</version>
        </dependency>

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

    </dependencies>

</project>


4.0.0
网络费用

这是我的web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
         xmlns="http://java.sun.com/xml/ns/javaee" 
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" 
         id="WebApp_ID" version="3.0">
  <display-name>My House Expense</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>

  <servlet>
    <servlet-name>HelloWeb</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  </servlet>

  <servlet-mapping>
     <servlet-name>HelloWeb</servlet-name>
     <url-pattern>*.do</url-pattern>
  </servlet-mapping>

  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/HelloWeb-servlet.xml</param-value>
  </context-param>

  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
</web-app>


我的房费
index.html
index.htm
index.jsp
default.html
default.htm
default.jsp
你好
org.springframework.web.servlet.DispatcherServlet
你好
*.做
上下文配置位置
/WEB-INF/HelloWeb-servlet.xml
org.springframework.web.context.ContextLoaderListener
您不应在应用程序中明确包含以下依赖项：
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.1.0</version>
    </dependency>


javax.servlet
，解释了所有不同的Maven依赖范围。那么，Maven不能编译您的项目了？在运行tomcat之前。尝试编译itI在运行它之前编译过。它被成功编译。类强制转换异常发生…它对我来说很有效，但我只是好奇作用域到底是做什么的？我添加了一个链接到关于作用域的原始答案，它很短，值得一读。
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
         xmlns="http://java.sun.com/xml/ns/javaee" 
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" 
         id="WebApp_ID" version="3.0">
  <display-name>My House Expense</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>

  <servlet>
    <servlet-name>HelloWeb</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  </servlet>

  <servlet-mapping>
     <servlet-name>HelloWeb</servlet-name>
     <url-pattern>*.do</url-pattern>
  </servlet-mapping>

  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/HelloWeb-servlet.xml</param-value>
  </context-param>

  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
</web-app>

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

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