解决Tomcat发布项目时start报错 Application at context path not be started?

javaweb项目,spring+spring mvc+mybatis
项目上传war时意外打断,没上传完,再删除war时,列表项目还在,重新上传war时报错误FAIL - War file "ESavingMonitor.war" cannot be uploaded if context is defined in serve
重启tomcat后,可以重新上传war包,但start启动时
报错信息
Message:
FAIL - Application at context path /ESavingMonitor could not be started
web.xml
tomcat的日志里的错误
SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [com..logic.service.impl.FunctionServiceImpl] for bean with name 'functionService' defined in class path resource [applicationContext-service.xml]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: com//logic/service/impl/FunctionServiceImpl : Unsupported major.minor version 52.0 (unable to load class com.pansoft.logic.service.impl.FunctionServiceImpl)

at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1330)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:594)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1396)

Caused by: java.lang.UnsupportedClassVersionError: com//logic/service/impl/FunctionServiceImpl : Unsupported major.minor version 52.0 (unable to load class com.pansoft.logic.service.impl.FunctionServiceImpl)

at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2961)

SEVERE: Error configuring application listener of class com.pansoft.common.SystemContextListener
java.lang.UnsupportedClassVersionError: com/pansoft/common/SystemContextListener : Unsupported major.minor version 52.0 (unable to load class com..common.SystemContextListener)

at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2961)

<?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"
    version="3.0">
    <display-name>ESavingMonitor</display-name>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
        classpath:applicationContext-service.xml
        classpath:spring-mybatis.xml
        </param-value>
    </context-param>
    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <async-supported>true</async-supported>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
    </listener>
    <listener>
        <listener-class>com.pansoft.common.SystemContextListener</listener-class>
    </listener>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.js</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.css</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.gif</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.jpg</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.png</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.ico</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.txt</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.eot</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.svg</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.ttf</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.woff</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.woff2</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.map</url-pattern>
    </servlet-mapping>
    <servlet>
        <servlet-name>SpringMVC</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
        <async-supported>true</async-supported>
    </servlet>
    <servlet-mapping>
        <servlet-name>SpringMVC</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <welcome-file-list>
        <welcome-file>/index.jsp</welcome-file>
    </welcome-file-list>
    <session-config>
        <session-timeout>-1</session-timeout>
    </session-config>
</web-app>
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