java.lang.UnsupportedClassVersionError: com/shiyi/http/Launcher : Unsupported major.minor version 52

java.lang.UnsupportedClassVersionError: com/shiyi/http/Launcher : Unsupported major.minor version 52

这个问题一般发生在你的编译指定jdk版本高于运行环境jdk版本，我这边是因为指定jdk8编译，在jdk7环境运行。

Exception in thread "main" java.lang.UnsupportedClassVersionError: com/shiyi/http/Launcher : Unsupported major.minor version 52.0at java.lang.ClassLoader.defineClass1(Native Method)at java.lang.ClassLoader.defineClass(ClassLoader.java:800)at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)at java.URLClassLoader.defineClass(URLClassLoader.java:449)at java.URLClassLoader.access$100(URLClassLoader.java:71)at java.URLClassLoader$1.run(URLClassLoader.java:361)at java.URLClassLoader$1.run(URLClassLoader.java:355)at java.security.AccessController.doPrivileged(Native Method)at java.URLClassLoader.findClass(URLClassLoader.java:354)at org.springframework.boot.loader.LaunchedURLClassLoader.doLoadClass(LaunchedURLClassLoader.java:158)at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:130)at java.lang.ClassLoader.loadClass(ClassLoader.java:358)at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:46)at java.lang.Thread.run(Thread.java:745)

查看.class文件的jdk编译版本

javap -verbose Launcher.class
F:svnsendmsgDBCenterServicetargetclassescomshiyihttp
λ javap -verbose Launcher.class
Classfile /F:/svn/sendmsg/DBCenterService/target/classes/com/shiyi/http/Launcher.classLast modified 2017-3-16; size 1038 bytesMD5 checksum f04bd09b5594f9e57229c3966c73300dCompiled from "Launcher.java"
public class com.shiyi.http.Launcherminor version: 0major version: 51flags: ACC_PUBLIC, ACC_SUPER

J2SE 8 = 52
J2SE 7 = 51
J2SE 6.0 = 50
J2SE 5.0 = 49
JDK 1.4 = 48
JDK 1.3 = 47
JDK 1.2 = 46
JDK 1.1 = 45