Error:JDK1.8 Cannot change version of project facet Dynamic Web Module to 3.1.
2018-03-10 13:45
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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.prefseclipse.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
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>转载自https://yq.aliyun.com/articles/58275
<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.prefseclipse.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>转载自https://yq.aliyun.com/articles/58275
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