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11个月前关门了。
我看到有很多类似的问题和答案，为我的情况，但问题是没有他们为我工作！我正在尝试学习jsf和springboot，我已经为他们使用了一些教程来管理这个简单的小代码，但是它不起作用。问题是eclipse知道我的托管bean及其在jsf页面中的属性，并且我的页面呈现得非常完美，但是当我输入数字并单击任何命令按钮时，就会出现错误！我想它可能找不到目标类，所以我试着用

<build>
    <outputDirectory>src\main\webapp\WEB-INF\classes</outputDirectory>

但没什么不同！你能帮帮我吗？我的pom.xml是：

<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.tebmahani</groupId>
  <artifactId>Memorist</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>

  <dependencies>

    <!-- https://mvnrepository.com/artifact/javax/javaee-api -->
    <dependency>
        <groupId>javax</groupId>
        <artifactId>javaee-api</artifactId>
        <version>8.0.1</version>
        <!-- <scope>provided</scope> -->
    </dependency>   

    <dependency>
        <groupId>javax.inject</groupId>
        <artifactId>javax.inject</artifactId>
        <version>1</version>
        <!-- <scope>provided</scope> -->
    </dependency>  

    <!-- https://mvnrepository.com/artifact/com.sun.faces/jsf-api -->
    <dependency>
        <groupId>com.sun.faces</groupId>
        <artifactId>jsf-api</artifactId>
        <version>2.2.20</version>
    </dependency>   

    <!-- https://mvnrepository.com/artifact/com.sun.faces/jsf-impl -->
    <dependency>
        <groupId>com.sun.faces</groupId>
        <artifactId>jsf-impl</artifactId>
        <version>2.2.20</version>
    </dependency>

    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>4.0.1</version>
        <!-- <scope>provided</scope> -->
    </dependency>   

    <!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/javax.servlet.jsp/javax.servlet.jsp-api -->
    <dependency>
        <groupId>javax.servlet.jsp</groupId>
        <artifactId>javax.servlet.jsp-api</artifactId>
        <version>2.3.3</version>
       <!--  <scope>provided</scope> -->
    </dependency>   

    <dependency>
        <groupId>javax.enterprise</groupId>
        <artifactId>cdi-api</artifactId>
        <version>2.0</version>
        <!-- <scope>provided</scope> -->
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.sun.el/el-ri -->
    <dependency>
        <groupId>com.sun.el</groupId>
        <artifactId>el-ri</artifactId>
        <version>1.0</version>
    </dependency>

<!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat-catalina -->
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat-catalina</artifactId>
    <version>9.0.35</version>
</dependency>

    <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api -->
    <dependency>
        <groupId>org.junit.jupiter</groupId>
        <artifactId>junit-jupiter-api</artifactId>
        <version>5.6.2</version>
        <scope>test</scope>
    </dependency>
  </dependencies>

  <build>
    <outputDirectory>src\main\webapp\WEB-INF\classes</outputDirectory>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>3.2.3</version>
                <configuration>
                    <failOnMissingWebXml>true</failOnMissingWebXml>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </pluginManagement>
  </build>
</project>

我的托管bean是：

package com.tebmahani.tinyCalculator;

import javax.enterprise.context.RequestScoped;
import javax.inject.Named;

@Named("tinyCalculator")
@RequestScoped
public class TinyCalculator {

private double _param1;
private double _param2;
private double _result;

public TinyCalculator() {}

public TinyCalculator(double param1, double param2, double result) {
    super();
    this._param1 = param1;
    this._param2 = param2;
    this._result = result;
}

public double getParam1() {
    return _param1;
}

public void setParam1(double param1) {
    this._param1 = param1;
}

public double getParam2() {
    return _param2;
}

public void setParam2(double param2) {
    this._param2 = param2;
}

public double getResult() {
    return _result;
}

public void setResult(double result) {
    this._result = result;
}

public String add() {
    this._result = _param1 + _param2;
    return "";
}

public String subtract() {
    this._result = _param1 - _param2;
    return "";
}

public String multiply() {
    this._result = _param1 * _param2;
    return "";
}

public String divide() {
    this._result = _param1 / _param2;
    return "";
}

}