错误:RuntimeException:没有为名称[默认值]配置JPA EntityManagerFactory

Question

当我尝试在数据库中创建操作搜索时，我得到了以下错误：[RuntimeException：没有为名称[默认值]]配置JPA EntityManagerFactory。

型号--user.java

@Entity
public class User extends Model{
    @Required
    public String MaKH;
    @Id
    public Integer Id;
    @MinLength(6)
    public String Ten;
    public String Diachi;
    public Integer SDT;
    public User() {}
    public User(String MaKH,String Ten,String Diachi,Integer SDT,Integer Id){
        this.Diachi=Diachi;
        this.MaKH=MaKH;
        this.Ten=Ten;
        this.SDT=SDT;
        this.Id=Id;
    }

    // Find method static for request
    public static Finder<Long,User> find = new Finder(Long.class,User.class);
    public static List<User> searchByName(String name){
        return find.where().like("Ten", "%"+name+"%").findList();
    }
}

控制器---应用程序.java

公共类应用程序扩展控制器｛

 public static Result index() {
     return ok(index.render());
 }
 @Transactional
 public static Result search() {
            DynamicForm form = form().bindFromRequest();
            String name = form.get("Ten");
            User.searchByName(name);
      return ok(result.render());

}}

路线

GET      /                           controllers.Application.index()
POST     /search                 controllers.Application.search()

的应用程序

 db.default.driver=com.mysql.jdbc.Driver
 db.default.url="jdbc:mysql://localhost/search"
 db.default.user=root
 db.default.password=123456
 db.default.jndiName=DefaultDS
 ebean.default="models.*"

请帮我解决它：D

Answer 1

曾为几个项目工作。在application.conf中添加

jpa.default=defaultPersistenceUnit

像

...
# Database configuration
# ~~~~~
# You can declare as many datasources as you want.
# By convention, the default datasource is named `default`
#
db.default.driver=com.mysql.jdbc.Driver
db.default.url="jdbc:mysql://localhost:3305/dbname"
db.default.user=root
db.default.password=""
#db.default.maxConnectionsPerPartition=5
#
# You can expose this datasource via JNDI if needed (Useful for JPA)
db.default.jndiName=DefaultDS
jpa.default=defaultPersistenceUnit
# Evolutions...

此外，在游戏2.2.3的sbt中，我添加了

libraryDependencies ++= Seq(
  javaJdbc,
  javaJpa,
  cache
)
play.Project.playJavaSettings
val appDependencies = Seq(
  javaJdbc,
  javaJpa,
  "org.hibernate" % "hibernate-entitymanager" % "4.3.5.Final",
  "mysql" % "mysql-connector-java" % "5.1.29"
)
ebeanEnabled in Global := false

如果persistence.xml、类、表和java注释一切正常，并且您清理了所有内容，重新启动并在各处添加了@Transactional，那么您几乎不会出现错误。此外，有时使用JPA.em（"默认"）而不是JPA.em