在maven更新后，Java版本自动更改为java 1.5 [英] Java version automatically change to java 1.5 after maven update

问题描述

我使用eclipse作为IDE。当我右键单击项目，然后单击maven更新我的java版本更改为1.5。这是我到目前为止所做的，我按照这里列出的所有步骤。

http://qussay.com/2013/09/13/solving-dynamic-web -module-3-0-require-java-1-6-or-newer-in-maven-projects /

1. 我将Java构建路径更改为workspace default jre 1.8.0_25


2. 然后将java编译器更改为1.8


3. 然后更改将pom.xml的java版本更改为1.8

 < build> 
< plugins> 
< plugin> 
< groupId> org.eclipse.jetty< / groupId> 
< artifactId> jetty-maven-plugin< / artifactId> 
< version> 9.1.3.v20140225< / version> 
< / plugin> 
< plugin> 
< groupId> org.apache.maven.plugin< / groupId> 
< artifactId> maven-compiler-plugin< / artifactId> 
< version> 3.1< / version> 
< configuration> 
< source> 1.8< / source> 
< target> 1.8< / target> 
< / configuration> 
< / plugin> 
< / plugins> 
< / build> 
  

所有这一切，当我点击Maven更新我的java版本自动更改为1.5。另外在上述步骤中，前两步的版本也会自动更改为1.5。如何解决这个问题？

解决方案

打开您的 pom.xml 并添加以下行：

 < properties> 
< maven.compiler.source> 1.8< /maven.compiler.source> 
< maven.compiler.target> 1.8< /maven.compiler.target> 
< / properties> 
  

其中 1.8 是您的Java版本目前的JDK / JRE。另一种方式是将< build> 与 maven-compile-plugin 一起添加为

 < build> 
< plugins> 
< plugin> 
< groupId> org.apache.maven.plugins< / groupId> 
< artifactId> maven-compiler-plugin< / artifactId> 
< version> 3.2< / version> <！ - 或任何当前版本 - > 
< configuration> 
< source> 1.8< / source> 
< target> 1.8< / target> 
< / configuration> 
< / plugin> 
< / plugins> 
< / build> 
  

I am using eclipse as IDE. When I right click on the project and then click maven update my java version change to 1.5. Here is what I did so far, I followed all the steps listed here

http://qussay.com/2013/09/13/solving-dynamic-web-module-3-0-requires-java-1-6-or-newer-in-maven-projects/

1. I changed "Java build path" to "workspace default jre 1.8.0_25"
2. Then changed "java compiler" to 1.8
3. Then changed "project facets">java>1.8
4. Changed pom.xml java version to 1.8

    <build>
        <plugins>
            <plugin>
                <groupId>org.eclipse.jetty</groupId>
                <artifactId>jetty-maven-plugin</artifactId>
                <version>9.1.3.v20140225</version>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugin</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

After all this when I click on "Maven update" my java version change to 1.5 automatically. Also in above steps, first two step's version also change to 1.5 automatically. How can I fix this?

解决方案

Open your pom.xml file and add the following lines on it:

<properties>
   <maven.compiler.source>1.8</maven.compiler.source>
   <maven.compiler.target>1.8</maven.compiler.target>
</properties>

Where 1.8 is the java version of your current JDK/JRE. Another way of doing this is adding a <build> with the maven-compile-plugin as

<build>
<plugins>
  <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.2</version> <!-- or whatever current version -->
    <configuration>
      <source>1.8</source>
      <target>1.8</target>
    </configuration>
  </plugin>
</plugins>
</build>

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