檢查BatchUpdateException20.15.6.Check BatchUpdateException

import java.sql.BatchUpdateException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;

import java.sql.ResultSet;

import java.sql.ResultSetMetaData;


public class CheckBatchUpdateException {

	public static void main(String[] args) throws Exception{
		Connection con = getConnection();
		con.setAutoCommit(false);

		Statement st = con.createStatement();
		st.executeUpdate("create table survey4(id int, name varchar(30));");
		String INSERT_RECORD = "insert into survey4(id, name) values(?,?)";
		
		PreparedStatement psmt = con.prepareStatement(INSERT_RECORD);
		
		psmt.setString(1, "1");
		psmt.setString(2, "name1");
		psmt.addBatch();
		
		psmt.setString(1, "2");
		psmt.setString(2, "name2");
		psmt.addBatch();
		
		try{
			int[] updateCounts = psmt.executeBatch();
		}catch(BatchUpdateException e){
			int[] updateCounts = e.getUpdateCounts();
			checkUpdateCounts(updateCounts);
			try{
				con.rollback();
				
			}catch(Exception e2){
				e.printStackTrace();
				System.exit(1);
			}
		}
		con.commit();
		
		ResultSet rs = st.executeQuery("select * from survey4");
		outputResultSet(rs);
		
		rs.close();
		st.close();
		con.close();
		
	}
	
	private static void outputResultSet(ResultSet rs) throws SQLException {
		ResultSetMetaData rsmd = rs.getMetaData();
		int numberOfCount = rsmd.getColumnCount();
		for(int i = 1; i < numberOfCount + 1; i ++){
			String columnName = rsmd.getColumnName(i);
			System.out.println(columnName +"   ");
		}
		System.out.println();
		System.out.println("===============");
		while(rs.next()){
			for(int i = 1; i < numberOfCount + 1; i++){
				System.out.print(rs.getString(i) + " ");
			}
			System.out.println();
		}
	}

	private static void checkUpdateCounts(int[] updateCounts) {
		for(int i = 0; i < updateCounts.length; i ++){
			if(updateCounts[i] >= 0){
				System.out.println("OK; updateCounts = " + Statement.SUCCESS_NO_INFO);
			}else if (updateCounts[i] == Statement.SUCCESS_NO_INFO) {
		        System.out.println("OK; updateCount=Statement.SUCCESS_NO_INFO");
		      } else if (updateCounts[i] == Statement.EXECUTE_FAILED) {
		        System.out.println("Failure; updateCount=Statement.EXECUTE_FAILED");
		      }

		}
		
	}

	public static Connection getConnection() throws ClassNotFoundException, SQLException{
		Connection con = null;
		Class.forName("com.mysql.jdbc.Driver");
		con = DriverManager.getConnection("jdbc:mysql://localhost/bookshop","root","");
		return con;
	}

}

id  
name  

===============
1 name1
2 name2