问题:
Error:JDK1.8 Cannot change version of project facet Dynamic Web Module to 3.1.
此工程为名为mybatis:maven webapp project:'mybatis':解决检查以下文件中配置的,参数:
解决设置1:设置\src\main\webapp\WEB-INF\web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee">
解决设置2:eclipse的workspace下,\workspace\mybatis\.settings\org.eclipse.jdt.core.prefs
eclipse.preferences.version=1 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8 org.eclipse.jdt.core.compiler.compliance=1.8 org.eclipse.jdt.core.compiler.problem.assertIdentifier=error org.eclipse.jdt.core.compiler.problem.enumIdentifier=error org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning org.eclipse.jdt.core.compiler.source=1.8
解决设置3:eclipse的workspace下,\workspace\mybatis\.settings\org.eclipse.wst.common.component
<project-modules id="moduleCoreId" project-version="1.5.0"> <wb-module deploy-name="mybatis"> <wb-resource deploy-path="/" source-path="/target/m2e-wtp/web-resources"/> <wb-resource deploy-path="/" source-path="/src/main/webapp" tag="defaultRootSource"/> <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/java"/> <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/resources"/> <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/test/java"/> <property name="context-root" value="mybatis"/> <property name="java-output-path" value="/mybatis/target/classes"/> </wb-module> </project-modules>
解决设置4:eclipse的workspace下,\workspace\mybatis\.settings\org.eclipse.wst.common.project.facet.core.xml
<?xml version="1.0" encoding="UTF-8"?> <faceted-project> <fixed facet="wst.jsdt.web"/> <installed facet="java" version="1.8"/> <installed facet="jst.web" version="3.1"/> <installed facet="wst.jsdt.web" version="1.0"/> </faceted-project>
解决操作5:eclipse菜单,
Project下clean..., 项目右键后 refresh
解决操作6:项目右键,properties:java build path:jdk SE -> jdk workspace default JRE设置本机的设有环境变量的JDK
解决操作7:项目右键,properties:选择Project Facets java -> 1.8 和选择Dynamic Web Module ->3.1
解决设置8[可选]:设置 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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>demo.mybatis</groupId> <artifactId>mybatis</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>mybatis Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> <scope>provided</scope> </dependency> </dependencies> <build> <finalName>mybatis</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> </plugins> </build> </project>