java - 更新由 symmetricds 同步的表

Question

我一直在从事一个涉及使用对称 ds 同步两个数据库的小项目。我的数据库之一是 mysql，另一个是 h2。我希望我的程序在单击时更新 h2 数据库。但是，更新函数会生成类似以下内容的错误:

org.h2.jdbc.JdbcSQLException: Error creating or initializing trigger 
"SYM_ON_I_FOR_DBTRGGR_CRS_LCL" object, class "org.jumpmind.symmetric.db.h2.H2Trigger", cause: "org.h2.message.DbException: Class ""org.jumpmind.symmetric.db.h2.H2Trigger"" not found [90086-176]"; see root cause for details; SQL statement:
INSERT INTO passenger VALUES(1, 'Person1', 20, 'City1', 'City2', 1); [90043-176]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:344)
    at org.h2.message.DbException.get(DbException.java:167)
    at org.h2.schema.TriggerObject.load(TriggerObject.java:77)
    at org.h2.schema.TriggerObject.fireRow(TriggerObject.java:167)
    at org.h2.table.Table.fireRow(Table.java:935)
    at org.h2.table.Table.fireAfterRow(Table.java:925)
    at org.h2.command.dml.Insert.insertRows(Insert.java:162)
    at org.h2.command.dml.Insert.update(Insert.java:115)
    at org.h2.command.CommandContainer.update(CommandContainer.java:79)
    at org.h2.command.Command.executeUpdate(Command.java:254)
    at

org.h2.jdbc.JdbcStatement.executeUpdateInternal(JdbcStatement.java:132)
    at org.h2.jdbc.JdbcStatement.executeUpdate(JdbcStatement.java:117)
    at h2Connector.UpdateLocalDB(dataBaseManager.java:105)
    at h2Connector.<init>(dataBaseManager.java:34)
    at dataBaseManager.main(dataBaseManager.java:8)
Caused by: org.h2.message.DbException: Class "org.jumpmind.symmetric.db.h2.H2Trigger" not found [90086-176]
    at org.h2.message.DbException.get(DbException.java:167)
    at org.h2.util.Utils.loadUserClass(Utils.java:672)
    at org.h2.schema.TriggerObject.load(TriggerObject.java:70)
    ... 12 more
Caused by: org.h2.jdbc.JdbcSQLException: Class "org.jumpmind.symmetric.db.h2.H2Trigger" not found [90086-176]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:344)
    ... 15 more
Caused by: java.lang.ClassNotFoundException: org.jumpmind.symmetric.db.h2.H2Trigger
    at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    at org.h2.util.Utils.loadUserClass(Utils.java:665)
    ... 13 more

我看到了类似的帖子 https://sourceforge.net/p/symmetricds/discussion/739236/thread/8a54e2ec/ 其中指出“从 SymmetricDS 主目录尝试此操作。H2 数据库需要用于 java 触发器的 SymmetricDS 库。”并引导使用命令

java -cp web/WEB-INF/lib/*:lib/h2-1.3.176.jar org.h2.tools.Console

我尝试使用它来运行我的代码，但遗憾的是无法弄明白。

这是我的 h2(本地端)属性文件:

engine.name=CRIS_Local-01
db.driver=org.h2.Driver
db.url=jdbc:h2:CRISDB;AUTO_SERVER=TRUE;LOCK_TIMEOUT=60000
db.user=sa
db.password=
registration.url=http://localhost:31415/sync/CRIS_Server-00
group.id=CRIS_Local
external.id=01
job.routing.period.time.ms=5000
job.push.period.time.ms=1000
job.pull.period.time.ms=1000

这是我的 mysql(服务器端)属性文件:

engine.name=CRIS_Server-00
db.driver=com.mysql.jdbc.Driver
db.url=jdbc:mysql://localhost/PassDB?tinyInt1isBit=false
db.user=root
db.password=passwd
registration.url=
sync.url=http://localhost:31415/sync/CRIS_Server-00
group.id=CRIS_Server
external.id=00
job.purge.period.time.ms=7200000
job.routing.period.time.ms=5000
job.push.period.time.ms=1000
job.pull.period.time.ms=1000
auto.registration=true
initial.load.create.first=true

这是我建立连接的java代码:

h2Connector(){
        stmt = null;
        con = null;
        try{
            Class.forName("org.h2.Driver");
            con = DriverManager.getConnection("jdbc:h2:~/Downloads/symmetric-server-3.10.2/tmp/h2/CRISDB;AUTO_SERVER=TRUE;LOCK_TIMEOUT=60000", "sa","");
            stmt = con.createStatement();
            System.out.println("Connected to h2 Succesfully!");
        }catch(Exception e){
            e.printStackTrace();
        }
 Passenger psg = GivePassenger(1,isOccupied);
        System.out.println(psg.Name);
        UpdateLocalDB(psg);
}

这是我的 UpdateLocalDB(Passenger psg)

public void UpdateLocalDB(Passenger psg){
        String query = "";
        query = "INSERT INTO passenger VALUES(";
        query += Integer.toString(psg.PNRNo) + ", ";
        query += "'"+psg.Name+"', ";
        query += Integer.toString(psg.age)+", ";
        query += "'"+psg.start+"', ";
        query += "'"+psg.end+"', ";
        query += Integer.toString(psg.seat) + ");";
        System.out.println(query);

        try{
            stmt.executeUpdate(query);
            System.out.println("Updated Succesfully!");
        }
        catch(Exception e){
            e.printStackTrace();
        }
    }

查询部分工作正常 PS:我是 SymmetricDS 的新手

Answer 1

同步 h2 数据库的应用程序的类路径上缺少 symmetricDs jar:symmetric-db-YOUR_VERSION.jar。