简单问题，帮帮忙看看

2004-07-09 07:13:03 165 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

shanshan2004 墨衍会员 · AI 创作全网分发关注 + 加入社区

性能调优：ViewPager快速切换时卡顿的解决方案——Fragment内容延迟加载一、需求公司的客户端项目比较庞大，首页的ViewPager有十几个Fragment，在快速切换的时候，容易产生卡顿现象。二、分析当ViewPager切换到当前的Fragment时，Fragment会加载布局并显示内容，如果用户这时快速切换ViewPager，即Fragment需要加载UI内容，而又频繁地切换Fragment，就容易产生卡顿现象（类似在ListView快速滑动阅读详情

我这段代码，老报数据库错误，不知道为什么。我用的mysql

public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
CustomerForm customerForm = (CustomerForm) form;

DataSource dataSource;
Connection cnn;
Statement stmt = null;
ResultSet rs = null;
dataSource = getDataSource(request);
cnn = dataSource.getConnection();
stmt = cnn.createStatement();

try {

rs =
stmt.executeQuery(
"insert into custom values('1','"+customerForm.getCUSTOMNAME()+"','"+customerForm.getCOUNTRY()+"','"
+ customerForm.getADDRESS()
+"','"
+customerForm.getDESCRIPTION()
+ "','"
+ customerForm.getLXR()
+"','"
+customerForm.getTEL()
+"','"
+customerForm.getCP()
+"','"
+customerForm.getFAX()
+"','"
+customerForm.getBP()
+"','"
+customerForm.getZIPCODE()
+ "')");

//插入一条纪录

return (mapping.findForward("success"));

} catch (SQLException e) {

throw new SQLException("insert into database error");

}
finally {
try {
rs.close();
stmt.close();
cnn.close();
} catch (Exception ex) {
System.out.println("Error closing database");
}
}

}

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