Rest POM.xml文件中的错误，新编码器的帮助输入输出

严重：web应用程序[/RestControllerExample]中的Servlet[spring]引发load（）异常 java.lang.ClassNotFoundException:org.springframework.web.servlet.DispatcherServlet

springmvc框架与REST

Spring基于注释的MVC框架简化了创建RESTful web服务的过程。传统SpringMVC控制器和RESTfulWeb服务控制器之间的关键区别在于HTTP响应主体的创建方式。传统的MVC控制器依赖于视图技术，而RESTful web服务控制器只返回对象，对象数据以JSON/XML的形式直接写入HTTP响应。有关使用Spring框架创建RESTful web服务的详细说明，请参阅

` web.xml

春天
org.springframework.web.servlet.DispatcherServlet
1.
春天
/休息/*
应用上下文
/WEB-INF/spring-servlet.xml
`

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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>RestControllerExample</groupId>
  <artifactId>RestControllerExample</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <build>
    <sourceDirectory>src</sourceDirectory>
    <plugins>
      <plugin>
        <artifactId>maven-war-plugin</artifactId>
        <version>3.0.0</version>
        <configuration>
          <warSourceDirectory>WebContent</warSourceDirectory>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.7.0</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
        </configuration>
      </plugin>
    </plugins>
  </build>
  <dependencies>


  <dependency>
 <groupId>org.springframework</groupId>
  <artifactId>spring-context</artifactId>
   <version>3.1.0.RELEASE</version>
</dependency>
<dependency>
 <groupId>org.springframework</groupId>
  <artifactId>spring-webmvc</artifactId>
   <version>3.1.0.RELEASE</version>
</dependency>


    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>4.2.3.RELEASE</version>
</dependency>


   <dependency>
   <groupId>org.springframework</groupId>
   <artifactId>spring-webmvc</artifactId>
   <!-- Set this to the respective version -->
   <version>3.0.5.RELEASE</version>
</dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
    <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
    <version>5.0.2.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>5.0.2.RELEASE</version>
</dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-beans</artifactId>
    <version>5.0.2.RELEASE</version>
</dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
    <version>5.0.2.RELEASE</version>
</dependency>

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

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

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.7.2</version>
    </dependency>
        <dependency>
      <groupId>commons-dbcp</groupId>
      <artifactId>commons-dbcp</artifactId>
      <version>1.4</version>
    </dependency>

     </dependencies>

</project>

4.0.0
RestControllerExample
RestControllerExample
0.0.1-快照
战争
src
maven战争插件
3.0.0
网络内容
maven编译器插件
3.7.0
1.8
1.8
org.springframework
spring上下文
3.1.0.1发布
org.springframework
SpringWebMVC
3.1.0.1发布
org.springframework
SpringWebMVC
4.2.3.1发布
org.springframework
SpringWebMVC
3.0.5.1发布
org.springframework
弹簧芯
5.0.2.发布
org.springframework
spring上下文
5.0.2.发布
org.springframework
春豆
5.0.2.发布
org.springframework
弹簧网
5.0.2.发布
org.springframework
弹簧芯
${spring.version}
org.springframework
spring上下文
${spring.version}
org.springframework
SpringJDBC
${spring.version}
org.springframework
弹簧网
${spring.version}
org.springframework
SpringWebMVC
${spring.version}
org.springframework
弹簧试验
${spring.version}
测验
朱尼特
朱尼特
4.11
测验
org.slf4j
slf4j-log4j12
1.7.2
公共dbcp
公共dbcp
1.4

spring-servlet.xml

    <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

    <!-- Enable autowire -->
    <context:annotation-config />
    <context:component-scan base-package="com.example.spring" />

    </beans>

---

问题在于pom文件中存在大量重复的依赖项，pom文件中的groupId与spring-servlet.xml中的groupId不同

我认为这个pom配置适合您，但是您必须为这两个文件设置一个goupId，因此如果您的类java在这个包com.example.spring中，请将其用作pom中的groupId

 <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>com.example.spring</groupId>
      <artifactId>RestControllerExample</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <packaging>war</packaging>
      <build>
        <sourceDirectory>src</sourceDirectory>
        <plugins>
          <plugin>
            <artifactId>maven-war-plugin</artifactId>
            <version>3.0.0</version>
            <configuration>
              <warSourceDirectory>WebContent</warSourceDirectory>
            </configuration>
          </plugin>
          <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.7.0</version>
            <configuration>
              <source>1.8</source>
              <target>1.8</target>
            </configuration>
          </plugin>
        </plugins>
      </build>
    <properties>
        <compiler.plugin.version>2.5.1</compiler.plugin.version>
        <jstl.version>1.2</jstl.version>
        <servletapi.version>3.1.0</servletapi.version>
        <spring.version>4.1.1.RELEASE</spring.version>
        <jackson-version>2.4.3</jackson-version>
        <logback.version>1.1.3</logback.version>
        <slf4j.version>1.7.12</slf4j.version>
    </properties>
      <dependencies>
        <!-- SLF4J and Logback  -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>jcl-over-slf4j</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>${logback.version}</version>
        </dependency>
        <!-- Spring dependecies  -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>commons-logging</groupId>
                    <artifactId>commons-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- compile only, deployed container will provide this -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>${servletapi.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>${jstl.version}</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
         </dependencies>

    </project>

4.0.0
com.example.spring
RestControllerExample
0.0.1-快照
战争
src
maven战争插件
3.0.0
网络内容
maven编译器插件
3.7.0
1.8
1.8
2.5.1
1.2
3.1.0
4.1.1.1发布
2.4.3
1.1.3
1.7.12
org.slf4j
jcl-over-slf4j
${slf4j.version}
回写
回归经典
${logback.version}
org.springframework
弹簧芯
${spring.version}
公用记录
公用记录
org.springframework
SpringWebMVC
${spring.version}
javax.servlet
javax.servlet-api
${servletapi.version}
假如
javax.servlet
jstl
${jstl.version}
javax.servlet
servlet api
2.5
假如

仍然无法解决Post，拜托，您的web.xml和pom.xml，如果没有代码，很难说您有什么问题。首先，请停止混合版本。。。不要混用你正在混用的3.0.5、3.1.0、4.2.3、5.0.2和spring.version所指的任何版本。我已经提供了所需的文件

 <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>com.example.spring</groupId>
      <artifactId>RestControllerExample</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <packaging>war</packaging>
      <build>
        <sourceDirectory>src</sourceDirectory>
        <plugins>
          <plugin>
            <artifactId>maven-war-plugin</artifactId>
            <version>3.0.0</version>
            <configuration>
              <warSourceDirectory>WebContent</warSourceDirectory>
            </configuration>
          </plugin>
          <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.7.0</version>
            <configuration>
              <source>1.8</source>
              <target>1.8</target>
            </configuration>
          </plugin>
        </plugins>
      </build>
    <properties>
        <compiler.plugin.version>2.5.1</compiler.plugin.version>
        <jstl.version>1.2</jstl.version>
        <servletapi.version>3.1.0</servletapi.version>
        <spring.version>4.1.1.RELEASE</spring.version>
        <jackson-version>2.4.3</jackson-version>
        <logback.version>1.1.3</logback.version>
        <slf4j.version>1.7.12</slf4j.version>
    </properties>
      <dependencies>
        <!-- SLF4J and Logback  -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>jcl-over-slf4j</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>${logback.version}</version>
        </dependency>
        <!-- Spring dependecies  -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>commons-logging</groupId>
                    <artifactId>commons-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- compile only, deployed container will provide this -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>${servletapi.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>${jstl.version}</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
         </dependencies>

    </project>