那些遇到过的问题

Maven 安装 - 编译错误

AFP*_*555 0 maven

我正在尝试清理/安装 Maven，但这就是我安装时发生的情况：

...
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding Cp1252, i.e. build is platform dependent!
[INFO] Compiling 53 source files to C:\demoBancoWeb\target\classes
[INFO] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/dao/ConsignacionesDAO.java: Some input files use unchecked or unsafe operations.
[INFO] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/dao/ConsignacionesDAO.java: Recompile with -Xlint:unchecked for details.
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[4,21] package javax.servlet does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[5,21] package javax.servlet does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[6,32] package javax.servlet.annotation does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[7,26] package javax.servlet.http does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[8,26] package javax.servlet.http does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[9,26] package javax.servlet.http does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[19,37] cannot find symbol
  symbol: class HttpServlet
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[18,2] cannot find symbol
  symbol: class WebServlet
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[35,26] cannot find symbol
  symbol:   class ServletConfig
  location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[35,55] cannot find symbol
  symbol:   class ServletException
  location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[49,30] cannot find symbol
  symbol:   class HttpServletRequest
  location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[49,58] cannot find symbol
  symbol:   class HttpServletResponse
  location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[49,95] cannot find symbol
  symbol:   class ServletException
  location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[61,31] cannot find symbol
  symbol:   class HttpServletRequest
  location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[61,59] cannot find symbol
  symbol:   class HttpServletResponse
  location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[61,96] cannot find symbol
  symbol:   class ServletException
  location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/vista/LoginView.java:[8,26] package javax.servlet.http does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/controller/OperacionesMatematicas.java:[3,30] package javax.websocket.server does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/vista/LoginView.java:[39,27] cannot find symbol
  symbol:   class HttpSession
  location: class co.edu.icesi.demo.vista.LoginView
[INFO] 19 errors 
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 02:10 min
[INFO] Finished at: 2016-05-20T21:41:51-05:00
[INFO] Final Memory: 20M/143M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.3:compile (default-compile) on project demoBancoWeb: Compilation failure: Compilation failure:
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[4,21] package javax.servlet does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[5,21] package javax.servlet does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[6,32] package javax.servlet.annotation does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[7,26] package javax.servlet.http does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[8,26] package javax.servlet.http does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[9,26] package javax.servlet.http does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[19,37] cannot find symbol
[ERROR] symbol: class HttpServlet
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[18,2] cannot find symbol
[ERROR] symbol: class WebServlet
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[35,26] cannot find symbol
[ERROR] symbol:   class ServletConfig
[ERROR] location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[35,55] cannot find symbol
[ERROR] symbol:   class ServletException
[ERROR] location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[49,30] cannot find symbol
[ERROR] symbol:   class HttpServletRequest
[ERROR] location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[49,58] cannot find symbol
[ERROR] symbol:   class HttpServletResponse
[ERROR] location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[49,95] cannot find symbol
[ERROR] symbol:   class ServletException
[ERROR] location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[61,31] cannot find symbol
[ERROR] symbol:   class HttpServletRequest
[ERROR] location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[61,59] cannot find symbol
[ERROR] symbol:   class HttpServletResponse
[ERROR] location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/servlet/ControlCliente.java:[61,96] cannot find symbol
[ERROR] symbol:   class ServletException
[ERROR] location: class co.edu.icesi.demo.servlet.ControlCliente
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/vista/LoginView.java:[8,26] package javax.servlet.http does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/controller/OperacionesMatematicas.java:[3,30] package javax.websocket.server does not exist
[ERROR] /C:/demoBancoWeb/src/main/java/co/edu/icesi/demo/vista/LoginView.java:[39,27] cannot find symbol
[ERROR] symbol:   class HttpSession
[ERROR] location: class co.edu.icesi.demo.vista.LoginView
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
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我不知道这是怎么回事。我发现删除 .m2 文件夹可以解决问题，但没有。

这是我的pom：

    <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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>demoBancoWeb</groupId>
    <artifactId>demoBancoWeb</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>


    <properties>
        <spring.version>4.2.4.RELEASE</spring.version>
        <hibernate.version>4.3.11.Final</hibernate.version>
    </properties>

    <repositories>
        <repository>
            <id>prime-repo</id>
            <name>PrimeFaces Maven Repository</name>
            <url>http://repository.primefaces.org</url>
            <layout>default</layout>
        </repository>
    </repositories>

    <dependencies>

        <!-- Jackson JSON Mapper -->
        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.13</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.5.1</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.5.1</version>
        </dependency>
        <!-- Jackson JSON Mapper -->

        <dependency>
            <groupId>org.primefaces</groupId>
            <artifactId>primefaces</artifactId>
            <version>5.3</version>
        </dependency>

        <dependency>
            <groupId>org.primefaces.themes</groupId>
            <artifactId>all-themes</artifactId>
            <version>1.0.10</version>
        </dependency>


        <dependency>
            <groupId>com.sun.faces</groupId>
            <artifactId>jsf-impl</artifactId>
            <version>2.2.13</version>
        </dependency>

        <dependency>
            <groupId>com.sun.faces</groupId>
            <artifactId>jsf-api</artifactId>
            <version>2.2.13</version>
        </dependency>

        <!-- Spring Framework -->



        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>


        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-webmvc</artifactId>
          <version>${spring.version}</version>
        </dependency>



    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-web</artifactId>
        <version> 4.1.0.RELEASE </version>
    </dependency>

    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-config</artifactId>
        <version> 4.1.0.RELEASE </version>
    </dependency>
        <!-- Spring Framework -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.14</version>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.14</version>
        </dependency>

        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>

        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <version>9.4.1207.jre7</version>
        </dependency>


        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>${hibernate.version}</version>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>

    </dependencies>


    <build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <excludes>
                    <exclude>**/*.java</exclude>
                </excludes>
            </resource>
            <resource>
                <directory>src/main/webapp</directory>
                <excludes>
                    <exclude>**/*.java</exclude>
                </excludes>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.3</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.6</version>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>
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提前致谢

Bal*_*ika 5

这是由于缺少servlet-api。在你的 pom 中包含以下依赖项

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version> //Change the version as per your needs
            <scope>provided</scope> //use provided if you are deploying war in a container
        </dependency>
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