模块不可用所需的Maven项目配置

Question

我有一个运行Tomcat 8服务器的Java / Maven / JSP。项目结构如下，

我在下面提供了这个<?xml version="1.0" encoding="UTF-8"?> <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.puut.wallet</groupId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <artifactId>WalletApp</artifactId> <name>simple-bitcoin-wallet</name> <parent> <groupId>org.bitcoinj</groupId> <artifactId>bitcoinj-parent</artifactId> <version>RELEASE</version> </parent> <build> <resources> <resource> <directory>src/main/resources</directory> <filtering>true</filtering> </resource> <resource> <directory>src/main/java</directory> </resource> </resources> </build> <dependencies> <dependency> <groupId>org.bitcoinj</groupId> <artifactId>bitcoinj-core</artifactId> <version>${project.parent.version}</version> </dependency> <dependency> <groupId>com.google.guava</groupId> <artifactId>guava</artifactId> <version>18.0</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.20</version> </dependency> <dependency> <groupId>net.glxn</groupId> <artifactId>qrgen</artifactId> <version>1.3</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> <scope>provided</scope> </dependency> </dependencies> </project> 文件，

Error:Maven Resources Compiler: Maven project configuration required for module 'WalletApp' isn't available. Compilation of Maven projects is supported only if external build is started from an IDE.

当我运行项目时，我收到以下错误，

a. in the terminal, run `mvn clean`
b. project -> right click -> `Make Module WalletApp`
c. project -> right click -> `Recompile Module WalletApp`
d. File -> Invalide Caches/Restart .... [This restarts the project]
e. Synchronize 

我采取了几项措施，

InteliIJ

显然，他们都没有解决这个问题。顺便说一句，我使用 byte[] myImage = (byte[])reader["MyImageColumn"]; 作为项目。我该怎么做才能解决这个问题？

Answer 1

在Event Log中，我可以选择Add as maven project。我选择了该选项，问题立即得到解决。