Caused by: java.sql.SQLException: Generated keys not requested

た入场券 2022-07-12 04:43 170阅读 0赞

1、错误描述

at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
    	at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
    	at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
    	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:233)
    	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:87)
    	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
    	at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:176)
    	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
    Caused by: java.sql.SQLException: Generated keys not requested. You need to specify Statement.RETURN_GENERATED_KEYS to Statement.executeUpdate() or Connection.prepareStatement().
    	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:996)
    	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:935)
    	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:924)
    	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:870)
    	at com.mysql.jdbc.StatementImpl.getGeneratedKeys(StatementImpl.java:1817)
    	at com.alibaba.druid.filter.FilterChainImpl.statement_getGeneratedKeys(FilterChainImpl.java:2621)
    	at com.alibaba.druid.filter.FilterAdapter.statement_getGeneratedKeys(FilterAdapter.java:2524)
    	at com.alibaba.druid.filter.FilterEventAdapter.statement_getGeneratedKeys(FilterEventAdapter.java:415)
    	at com.alibaba.druid.filter.FilterChainImpl.statement_getGeneratedKeys(FilterChainImpl.java:2618)
    	at com.alibaba.druid.proxy.jdbc.StatementProxyImpl.getGeneratedKeys(StatementProxyImpl.java:299)
    	at com.alibaba.druid.pool.DruidPooledStatement.getGeneratedKeys(DruidPooledStatement.java:599)
    	at com.mes.joint.dao.trans.impl.MagreeDaoSyncSupport$4.setValues(MagreeDaoSyncSupport.java:214)
    	at org.springframework.jdbc.core.JdbcTemplate$4.doInPreparedStatement(JdbcTemplate.java:999)
    	at org.springframework.jdbc.core.JdbcTemplate$4.doInPreparedStatement(JdbcTemplate.java:989)
    	at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:644)
    	... 46 more

2、错误原因

private static final String SQL_INSERT_STUDENT = "insert into t_student_info(student_name,student_age,student_sex,student_addr) values(?,?,?,?) ";
    
    @Resource
    private DruidDataSource dataSource;
    
    
    Connection conn = dataSource.getConnection();  
    con.setAutoCommit(false);  
    PreparedStatement pstm = conn.prepareStatement(SQL_INSERT_STUDENT, PreparedStatement.RETURN_GENERATED_KEYS);  
    for (Map<String,String> map:mapList) 
    {  
       pstm.setString(1,map.get("studentName"));     
       pstm.setString(2,map.get("studentAge")); 
       pstm.setString(3,map.get("studentSex")); 
       pstm.setString(4,map.get("studentAddr")); 
       pstm.addBatch();  
    }  
    pstm.executeBatch();   
    conn.commit();     
    ResultSet rs = pstm.getGeneratedKeys(); 
    List<Integer> list = new ArrayList<Integer>();   
    while(rs.next()) 
    {  
       list.add(rs.getInt(1));
    }  
    conn.close();  
    pstm.close();  
    rs.close();

ResultSet rs = pstm.getGeneratedKeys(); 无法获取自动增长的ID

3、解决办法

（1）首先，先插入数据

（2）然后，利用某一字段查询出id

（3）最后，将ID放入到map集合中