java.sql.SQLException : error occurred during batching: batch must be either executed or cleared 异常

Question

我得到了

java.sql.SQLException: error occurred during batching: batch must be either executed or cleared

在下面的代码中。我想执行两个查询。

String sql_query="insert into m_status values(20,'test');select * from m_user";
String query1 = sql_query.toUpperCase();

String[] results = query1.split(";");

stmt = conn1.createStatement();
conn1.setAutoCommit(false); 
for (int i = 0; i < results.length; i++) {
    if(results[i].startsWith("SELECT")) {
        rs1 = stmt.executeQuery(results[i]);
    }
    else if(results[i].startsWith("INSERT")){
        stmt.addBatch(results[i]);
    }
}
int [] updateCounts = stmt.executeBatch();
conn1.commit(); 
if (rs1 != null)
    rs1.close();
if (stmt != null)
    stmt.close();
if (conn1 != null)
    conn1.close();

Answer 1

使用两个语句，一个用于选择查询，另一个用于更新。 executeQuery 检查是否有针对该 Statament 的批处理，如果有则抛出该错误。此外，将查询包装在 try-catch-finally block 中并关闭 finally block 中的资源。实际上，您的代码可能会导致连接泄漏。