現象
spring容器初始化失敗
error日誌如下:
Context initialization failed
org.springframework.beans.factory.BeanDefinitionStoreException: Failed to read candidate component class
nested exception is org.springframework.core.NestedIOException: ASM ClassReader failed to parse class file - probably due to a new Java class file version that isn't supported yet:
原因
java編譯版本與Spring版本兼容問題,由於spring的版本3.2.4比較低,而依賴的jar包是用1.8編譯的,導致spring讀取類文件報錯
解決方案
1.提升spring版本到4.2.5或其它4以上
2.改寫jar包的pom文件中java編譯版本到1.6
<properties>
<project.build.sourceEncoding>GBK</project.build.sourceEncoding>
<java.version>1.6</java.version>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
</configuration>
</plugin>
</plugins>
</build>
由於老項目改spring依賴版本風險較大,高版本的public方法有不兼容低版本的情況,導致需要修改代碼,
且該jar包是自己寫的,控制權比較大
所以此處選擇第二種方案,部署成功~
兄弟問題 :
class file has wrong version 52.0, should be 50.0