java.lang.UnsupportedOperationException: Can't write to a readonly object

Using hibernate technology, the following error occurs:

java.lang.UnsupportedOperationException: Can't write to a readonly object......

Solution:

1. If the configuration file is configured as follows:

1.  <class-cacheusage="read-write"class="org.gl.app.pojo.Depart"/>    
2. <class-cacheusage="read-only"class="org.gl.app.pojo.User"/>    

Change "read-only" to "read-write"

2. If you annotate the persistent class, as follows:

@Cache(usage=CacheConcurrencyStrategy.READ_ONLY)

public class User {......}

Then change the READ_ONLY in the annotation to READ_WRITE

OK.