使用Dropwizard，Hibernate和MySQL进行UTF-8编码

Question

I have a MySQL database with a Dropwizard Java application sitting on top of it. I have set up my YAML configuration file according to the Dropwizard Hibernate documentation, but for some reason my responses are not being returned UTF-8 encoded.

Answer 1

In the YAML configuration you must be sure to include a characterEncoding and useUnicode property in addition to the charSet property. An example configuration could look like this (note the properties section):

database:
  driverClass: com.mysql.jdbc.Driver
  user: ...
  password: ...
  url: jdbc:mysql://...
  properties:
    charSet: UTF-8
    characterEncoding: UTF-8
    useUnicode: true
    hibernate.dialect: org.hibernate.dialect.MySQL5InnoDBDialect
  maxWaitForConnection: 1s
  validationQuery: "/* DropWizard Health Check */ SELECT 1"
  minSize: 5
  maxSize: 25
  checkConnectionWhileIdle: false
  checkConnectionOnBorrow: true

Updating the YAML configuration in addition to adding a charset parameter to the Content-Type header should address the issue.