java.lang.IllegalArgumentException:Failed to decrypt

从错误可以看出，解密失败。

原因是你在数据库连接配置的地方，设置了加密。即:

config.decrypt=true

将其改成：

config.decrypt=false

问题就可以解决。

public-key: MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAITOx1pKAT9xh7cfoZqUw6SLjgl/Y44M2XUAw37aRndmku+FSdGp9PXGwJYoeXt/TbxR1DSdd7S2+/s1cUsvvDMCAwEAAQ==spring:  http:    encoding:      charset: UTF-8      force: true      enabled: true  datasource:    druid:      url: jdbc:mysql://localhost:3306/fairchild?useSSL=true&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai      #        url: jdbc:mysql://192.168.31.196:3306/fairchild?useSSL=true&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai      username: root      password: 123456      driver-class-name: com.mysql.cj.jdbc.Driver    #  connection-properties: config.decrypt=true;config.decrypt.key=${public-key}      initial-size: 5      min-idle: 10      max-active: 20      max-wait: 60000      time-between-eviction-runs-millis: 2000      min-evictable-idle-time-millis: 60000      max-evictable-idle-time-millis: 9000000      test-while-idle: true      test-on-borrow: false      test-on-return: false      validation-query: select 1      pool-prepared-statements: true      max-open-prepared-statements: 20      async-init: true      stat-view-servlet:        enabled: true        url-pattern: /druid/*        reset-enable: true        login-username: druid        login-password: druid      web-stat-filter:        enabled: true        url-pattern: /*        exclusions: "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*"        session-stat-enable: false        profile-enable: true      filter:        wall:          enabled: true          db-type: mysql        config:          enabled: true      aop-patterns: cn.com.coding4fun.*  jpa:    show-sql: true    generate-ddl: false    hibernate:      ddl-auto: none    open-in-view: true    properties:      hibernate:        format_sql: true        order_updates: true        order_inserts: true        jdbc:          batch_size: 50          fetch_size: 50        javax:          cache:            provider: org.ehcache.jsr107.EhcacheCachingProvider            uri: classpath:hibernate-ehcache.xml            missing_cache_strategy: create        enable_lazy_load_no_trans: true        cache:          use_query_cache: true          use_second_level_cache: true          region_prefix: jcache-hibernate          use_minimal_puts: false          use_reference_entries: true          use_structured_entries: false          auto_evict_collection_cache: false          hibernate.cache.default_cache_concurrency_strategy: read-only          region:            factory_class: jcache  cache:    jcache:      provider: org.ehcache.jsr107.EhcacheCachingProvider      config: classpath:ehcache.xml  messages:    basename: i18n/messages    encoding: UTF-8server:  port: 8081  tomcat:    uri-encoding: UTF-8