Use java interface "setArray" to insert the array of user-defined type to table

Hi all,
I use a user-defined type in “schema.sql”
CREATE TYPE infoEntity AS (
"entity_id" bigint,
"seq" integer,
"message" varchar(255)
)

in java code:
java_infoEntity[] infoEntityArray; //java_infoEntity is the class with the
same member variables.
infoEntityArray = new java_infoEntity[3];
infoEntityArray[0] = new java_infoEntity();
....

//info_Entity's type is user-defined type "infoEntity".
sql = "insert into \"T_abc\" (info_Entity) values(?);";
statement = conn.prepareStatement( sql );
Array array = conn.createArrayOf("infoEntity", infoEntityArray);
statement.setArray(1,array);
statement.addBatch();
statement.executeBatch();
....
....
Sql throw exception:
sqlException: SQLState: 22P02 Error Code: 0 Error Message: Batch entry 0
insert into "T_abc" (info_Entity)
values('{"com(dot)xxx(dot)java_infoEntity(at)597d57aa"}')
was aborted: ERROR: malformed record literal: "
com(dot)xxx(dot)java_infoEntity(at)597d57aa"

*How to cope with it?*