DaoGenerator抛出异常

Question

我刚刚启动了greenDao，但是我无法初始化DaoGenerator：调用new DaoGenerator();抛出异常

  

java.lang.ExceptionInInitializerError   在de.greenrobot.daogenerator.DaoGenerator。（DaoGenerator.java:60）

这是我的代码：

    Schema schema = new Schema(1,"com.emt.testdb.greendao");
    schema.setDefaultJavaPackageTest("com.emt.testdb.greendao.test");
    schema.setDefaultJavaPackageDao("com.emt.testdb.greendao.dao");
    Entity user = schema.addEntity("User");
    user.addIdProperty();
    user.addStringProperty("name");
    user.addStringProperty("password");
    user.addIntProperty("yearOfBirth");
    DaoGenerator daoGenerator = null;
    try
    {
        daoGenerator = new DaoGenerator();
       // daoGenerator.generateAll(schema, "../project/src-gen");
    } catch (IOException e)
    {
        e.printStackTrace();
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }

非常感谢你的帮助！