用mvn install 编译出错not supported in -source 1.5

Question

运行环境

Apache Maven 3.2.5 (12a6b3acb947671f09b81f49094c53f426d8cea1; 2014-12-15T01:29:23+08:00)
Maven home: C:apache-maven-3.2.5-binapache-maven-3.2.5
Java version: 1.8.0, vendor: Oracle Corporation
Java home: C:Program FilesJavajdk1.8.0jre
Default locale: en_US, platform encoding: GBK
OS name: "windows 8", version: "6.2", arch: "amd64", family: "dos"

Answer 1

1.7

Answer 2

引用来自“唐小明生”的评论

找到原因了

以下这样写编译不通过

HashMap<String, Object> params = new HashMap<>();

要改成以下这样才能编译通过

HashMap<String, Object> params = new HashMap<String, Object>();

Answer 3

错误信息中有，让你把maven-compiler插件版本改成3.1

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.1</version>
    <configuration>
         <source>1.6</source>
         <target>1.6</target>
    </configuration>
</plugin>

Answer 4

请问 new
HashMap<>(); 这个是jdk1.7的写法？

Answer 5

找到原因了

以下这样写编译不通过

HashMap<String, Object> params = new HashMap<>();

要改成以下这样才能编译通过

HashMap<String, Object> params = new HashMap<String, Object>();