Caused by: java.lang.NoSuchMethodError: org.apache.tomcat.util.res.StringManager.getManager(Ljava/la

tomcat启动catalina.out日志报错

Caused by: java.lang.NoSuchMethodError: org.apache.tomcat.util.res.StringManager.getManager(Ljava/l.....................

问题原因：

Springboot内嵌tomcat8，与tomcat7冲突

解决办法：

①、在pom中删除内嵌tomcat8

 <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-web</artifactId>
       <version>1.5.2.RELEASE</version>
       <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-tomcat</artifactId>
            </exclusion>
       </exclusions>
   </dependency>
   <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
   </dependency>

②、直接更换更高版本的Tomcat，我就换成tomcat9,搞定

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