小编use*_*191的帖子

我正在使用shell/perl搜索一个不应该包含此字符串"section"的文件.

grep -vl如果字符串存在,请帮我找到way 命令返回文件名.

我想知道isWrapperFor在JDBC中验证和解包函数的正确方法.这里HIRAConnection使用标准Connection类.

HIRAConnection hiraCon1 = (HIRAConnection) ds.getConnection();
Connection conn = ds.getConnection();
if (hiraCon1 instanceof Wrapper) {
    // try to use java 6 unwrapping
    try {
        Wrapper w = conn;
        if (hiraCon1.isWrapperFor(Connection.class)) {
            hiraCon1 = conn.unwrap(HIRAConnection.class); 
            hiraCon1= hiraCon1.unwrap(HIRAConnection.class);
            hiraCon1= ds.unwrap(HIRAConnection.class);//returns SQLException   
        }
        if (hiraCon1.isWrapperFor(HIRAConnection.class)) {
            hiraCon1 = conn.unwrap(HIRAConnection.class);
            hiraCon1 = hiraCon1.unwrap(HIRAConnection.class);    
        }
        if (conn.isWrapperFor(com.hira.HIRAConnection.class)) {          
            hiraCon1 = conn.unwrap(com.hira.HIRAConnection.class);
        } 
        if (conn.isWrapperFor(Connection.class)) {          
            hiraCon1 = conn.unwrap(com.hira.HIRAConnection.class);
        } 
    } catch (Throwable t) {
        System.out.println("Failed to unwrap connection using …