Tomcat7 + Maven插件：Tomcat不會以我的戰爭開始

Question

我正在使用java 8和tomcat 7和maven 3.3.9與maven tomcat插件：

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.tomcat.maven</groupId>
            <artifactId>tomcat7-maven-plugin</artifactId>
            <version>2.2</version>
            <configuration>
                <port>8085</port>
            </configuration>
        </plugin>
    </plugins>
</build>

有一段時間一切正常， tomcat7:run-war工作。

現在我沒有明顯的理由得到這個錯誤：

[INFO] --- tomcat7-maven-plugin:2.2:run-war (default-cli) @ tomcat-example ---
[INFO] Running war on http://localhost:8085/tomcat-example
[INFO] Using existing Tomcat server configuration at /Users/shikloshi/java_workspace/webapp-examples/tomcat-example/target/tomcat
[INFO] create webapp with contextPath: /tomcat-example
Jul 04, 2016 2:30:45 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8085"]
Jul 04, 2016 2:30:45 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Tomcat
Jul 04, 2016 2:30:45 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.47
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.693s
[INFO] Finished at: Mon Jul 04 14:30:45 IDT 2016
[INFO] Final Memory: 17M/307M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.tomcat.maven:tomcat7-maven-plugin:2.2:run-war (default-cli) on project tomcat-example: Could not start Tomcat: Failed to start component [StandardServer[-1]]: Failed to start component [StandardService[Tomcat]]: Failed to start component [StandardEngine[Tomcat]]: Failed to start component [Realm[MemoryRealm]]: Memory database file /Users/shikloshi/java_workspace/webapp-examples/tomcat-example/target/tomcat/conf/tomcat-users.xml cannot be read -> [Help 1]

這是錯誤：

Tomcat: Failed to start component [StandardServer[-1]]: Failed to start component [StandardService[Tomcat]]: Failed to start component [StandardEngine[Tomcat]]: Failed to start component [Realm[MemoryRealm]]: Memory database file /Users/shikloshi/java_workspace/webapp-examples/tomcat-example/target/tomcat/conf/tomcat-users.xml cannot be read -> [Help 1]

誰負責在我的目標目錄中編寫tomcat配置，為什么不寫？

Answer 1

執行mvn clean以清理目標目錄。

然后再試一次，tomcat-maven-plugin將重新創建tomcat文件夾（包括文件tomcat-users.xml ）。

Answer 2

只需從應用程序中刪除目標文件夾，然后再次運行您的應用。 這個對我有用。

Answer 3

您可以嘗試在以下位置為tomcat用戶創建文件：

/Users/shikloshi/java_workspace/webapp-examples/tomcat-example/target/tomcat/conf/

然后將其添加到其中：

<?xml version="1.0" encoding="UTF-8"?>
<tomcat-users>
 <role rolename="tomcat"/>
 <role rolename="admin"/>
 <role rolename="manager"/>
 <user  username="admin" password="admin" roles="tomcat,admin,manager"/>
</tomcat-users>