### Cause: java.lang.IllegalStateException: Cannot enable lazy loading because Javassist is not avai

下载阅读mybatis-3.5.7源码，debug时报错如下信息

org.apache.ibatis.exceptions.PersistenceException: 
### Error building SqlSession.
### Cause: java.lang.IllegalStateException: Cannot enable lazy loading because Javassist is not available. Add Javassist to your classpath.

JavassistProxyFactory.java

创建 Configuration类，初始化 JavassistProxyFactory时加载JavassistProxyFactory

  public JavassistProxyFactory() {
    try {
      Resources.classForName("javassist.util.proxy.ProxyFactory");
    } catch (Throwable e) {
      throw new IllegalStateException("Cannot enable lazy loading because Javassist is not available. Add Javassist to your classpath.", e);
    }
  }

注释掉以下内容

    
      ognl
      ognl
      3.2.20


    
    
      org.javassist
      javassist
      3.27.0-GA