Maven打jar包報錯

1、錯誤描述：source 1.5 中不支持 diamond 運算符

在maven項目打jar包包如下錯誤：

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project WriteTxt: Compilation failure: Compilation failure: 
[ERROR] /C:/MyselfApplication/MyProject/IDEA/WhiteListModel/WriteTxt/src/main/java/com/gl/service/DbOperate.java:[16,46] -source 1.5 中不支持 diamond 運算符
[ERROR]   (請使用 -source 7 或更高版本以啓用 diamond 運算符)
[ERROR] /C:/MyselfApplication/MyProject/IDEA/WhiteListModel/WriteTxt/src/main/java/com/gl/util/DateUtil.java:[14,52] -source 1.5 中不支持 diamond 運算符
[ERROR]   (請使用 -source 7 或更高版本以啓用 diamond 運算符)
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

2、解決辦法

pom.xml修改爲如下內容，沒有則添加

  <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.3</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>