Maven 工程 Update Preject 后，jre 版本发生变化的解决方案

话说现在用Maven的可不少，遇到各式各样花花绿绿的问题的更是数不胜数，网上形形色色的解决方案更是多如牛毛，然而真正能够解决问题的往往万里无一。

得！不扯这些没用的，之前遇到的一个很奇怪的问题，就是Maven工程update preject后，jdk版本居然一路飙升，呃不，一路飙降到1.5了！

在网上查了一下发现有好多人为此懊恼。

本着雷锋精神，问题解决后，与大家分享一下经验。

打开pom.xml

找到<build>节点。（没有就创建一个）

然后在这个节点里面添加以下内容：

<plugins>
  <plugin>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-compiler-plugin</artifactId>
   <version>3.0</version>
   <configuration>
    <source>1.7</source>
    <target>1.7</target>
   </configuration>
  </plugin>
 </plugins>

保存，然后再Update Preject一下。问题解决。

下面是我的pom.xml完整代码，不知道上述代码在哪里写的朋友可以参考一下：

<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>aiyi.crud.core</groupId>
  <artifactId>crud</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>aiyi crud</name>
  <url>http://321aiyi.com</url>
  <description>
      一个基于Mybatis封装的极速开发工程源代码。
 </description>
 <organization>

  <name>aiyi</name>

  <url>http://321aiyi.com</url>

 </organization>
 <properties>

  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

  <spring.version>3.2.0.RELEASE</spring.version>

 </properties>

 

 <developers>

  <developer>

   <id>admin</id>

   <name>郭胜凯</name>

   <email>719348277@qq.com</email>

   <url>http://blog.321aiyi.com</url>

  </developer>

 </developers>
 

  <dependencies>

  

     <dependency>

   <groupId>junit</groupId>

   <artifactId>junit</artifactId>

   <version>3.8.1</version>

   <scope>test</scope>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/aopalliance/aopalliance -->

  <dependency>

      <groupId>aopalliance</groupId>

      <artifactId>aopalliance</artifactId>

      <version>1.0</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.ow2.asm/asm-commons -->

  <dependency>

      <groupId>org.ow2.asm</groupId>

      <artifactId>asm-commons</artifactId>

      <version>4.1</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->

  <dependency>

      <groupId>org.aspectj</groupId>

      <artifactId>aspectjweaver</artifactId>

      <version>1.6.11</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.bouncycastle/bcpkix-jdk15on -->

  <dependency>

      <groupId>org.bouncycastle</groupId>

      <artifactId>bcpkix-jdk15on</artifactId>

      <version>1.52</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/commons-codec/commons-codec -->

  <dependency>

      <groupId>commons-codec</groupId>

      <artifactId>commons-codec</artifactId>

      <version>1.10</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/commons-dbcp/commons-dbcp -->

  <dependency>

      <groupId>commons-dbcp</groupId>

      <artifactId>commons-dbcp</artifactId>

      <version>1.2.2</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->

  <dependency>

      <groupId>commons-fileupload</groupId>

      <artifactId>commons-fileupload</artifactId>

      <version>1.3.1</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/commons-io/commons-io -->

  <dependency>

      <groupId>commons-io</groupId>

      <artifactId>commons-io</artifactId>

      <version>2.4</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/commons-pool/commons-pool -->

  <dependency>

      <groupId>commons-pool</groupId>

      <artifactId>commons-pool</artifactId>

      <version>1.6</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/dom4j/dom4j -->

  <dependency>

      <groupId>dom4j</groupId>

      <artifactId>dom4j</artifactId>

      <version>1.6.1</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->

  <dependency>

      <groupId>com.alibaba</groupId>

      <artifactId>fastjson</artifactId>

      <version>1.2.7</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/log4j/log4j -->

  <dependency>

      <groupId>log4j</groupId>

      <artifactId>log4j</artifactId>

      <version>1.2.17</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12 -->

  <dependency>

      <groupId>org.slf4j</groupId>

      <artifactId>slf4j-log4j12</artifactId>

      <version>1.7.21</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->

  <dependency>

   <groupId>javax.servlet</groupId>

   <artifactId>jstl</artifactId>

   <version>1.2</version>

  </dependency>
  <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->

  <dependency>

      <groupId>org.mybatis</groupId>

      <artifactId>mybatis</artifactId>

      <version>3.3.0</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->

  <dependency>

      <groupId>org.mybatis</groupId>

      <artifactId>mybatis-spring</artifactId>

      <version>1.2.2</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->

  <dependency>

      <groupId>mysql</groupId>

      <artifactId>mysql-connector-java</artifactId>

      <version>5.1.38</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->

  <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-aop</artifactId>

      <version>${spring.version}</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->

  <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-aspects</artifactId>

      <version>${spring.version}</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->

  <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-beans</artifactId>

      <version>${spring.version}</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->

  <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-context</artifactId>

      <version>${spring.version}</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.springframework/spring-context-support -->

  <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-context-support</artifactId>

      <version>${spring.version}</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->

  <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-core</artifactId>

      <version>${spring.version}</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.springframework/spring-expression -->

  <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-expression</artifactId>

      <version>${spring.version}</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->

  <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-jdbc</artifactId>

      <version>${spring.version}</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.springframework/spring-orm -->

  <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-orm</artifactId>

      <version>${spring.version}</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.springframework/spring-tx -->

  <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-tx</artifactId>

      <version>${spring.version}</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->

  <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-web</artifactId>

      <version>${spring.version}</version>

  </dependency>

  

  <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->

  <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-webmvc</artifactId>

      <version>${spring.version}</version>

  </dependency>

  </dependencies>

  <build>

    <finalName>crud</finalName>

 <plugins>

  <plugin>

   <groupId>org.apache.maven.plugins</groupId>

   <artifactId>maven-compiler-plugin</artifactId>

   <version>3.0</version>

   <configuration>

    <source>1.7</source>

    <target>1.7</target>

   </configuration>

  </plugin>

 </plugins>

    

  </build>

</project>