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spring聲明式事務@Transactional開發(fā)常犯的幾個錯誤及最新解決方案_jav...
//演示調(diào)用,最終有報錯:Transaction rolled back because it has been marked as rollback-only DemoUser result = demoUserService.doGet(); System.out.println(result != null ? result.toString() : "none"); 根本原因:事務繼承“惹的禍”【事務傳播特性】,入口事務方法內(nèi)部再調(diào)其他事務方法,其他事務方法...
www.dbjr.com.cn/program/315141y...htm 2025-5-22
自動識別WEB和WAP訪客的源碼 _編程開發(fā)_軟件教程_腳本之家
// Because this script sends out HTTP header information, // the first characters in the file must be the <? PHP tag. // relative URL to your HTML file $htmlredirect = "/html/my_htmlpage.html"; // ABSOLUTE URL to your WML file $wmlredirect = "http://wap.mysite.com/wml/my_wml...
www.dbjr.com.cn/softjc/173...html 2025-6-9
比較經(jīng)典的10漢譯英經(jīng)典語句_中英文對照_腳本之家
(1)I love you not because of who you are,but because of who i am when i am with you 我愛你,不是因為你是一個怎樣的人,而是因為我喜歡與你在一起的感覺 (2)No man or woman is woath your tears,and the one who is,won't make you dry. 沒有人值得你流淚。值得讓你這么做的人不會讓...
www.dbjr.com.cn/article/131...htm 2025-6-8
onerror
The onerror event fires because the script is invalid. The error results are inserted at the bottom of the sample page instead of in a dialog box. <SCRIPT> window.onerror=fnErrorTrap; function fnErrorTrap(sMsg,sUrl,sLine){ oErrorLog.innerHTML="An error was thrown and caught."; oErrorLo...
www.dbjr.com.cn/shouce/dhtml/events/one... 2025-5-27
...connect to HTTPS URL because the SSL module is not available_pyt...
從官網(wǎng)下載了Python3.7.4,直接編譯安裝后,使用pip3出現(xiàn)了報錯信息: Can't connect to HTTPS URL because the SSL module is not available 錯誤原因 在Python3.7之后的版本,依賴的openssl,必須要是1.1或者1.0.2之后的版本,或者安裝了2.6.4之后的libressl。
www.dbjr.com.cn/article/1666...htm 2025-6-9
詳解Java中ExceptionInInitializer錯誤的解決方法_java_腳本之家
Caused by: java.lang.NullPointerException: Cannot invoke "String.length()" because "str" is null at Test.<clinit>(Test.java:7) 在上面的代碼中,我們創(chuàng)建了一個靜態(tài)塊,其中有一個值為 null 的字符串 str。 因此,當我們嘗試使用 length() 方法獲取其長度時,當我們打印以 null 為值的字符串的長度時...
www.dbjr.com.cn/program/3152749...htm 2025-5-30
模式語法
There may be more than one back reference to the same subpattern. If a subpattern has not actually been used in a particular match, then any back references to it always fail. For example, the pattern(a|(bc))\2always fails if it starts to match "a" rather than "bc". Because there...
www.dbjr.com.cn/shouce/php5/zh/referenc... 2025-6-3
Accepting Arguments
To access arguments, it's necessary for each argument to have a clearly defined type. Again, PHP's extremely dynamic nature introduces some quirks. Because PHP never does any kind of type checking, it's possible for a caller to pass any kind of data to your functions, whether you want ...
www.dbjr.com.cn/shouce/php5/zh/zend.arg... 2025-5-15
include
* scope. $color is because we declared it * * as global. */ foo();// A green apple echo"A $color $fruit";// A green ?> 當一個文件被包含時,語法解析器在目標文件的開頭脫離 PHP 模式并進入 HTML 模式,到文件結尾處恢復。由于此原因,目標文件中應被當作 PHP 代碼執(zhí)行的任何代碼都必須被包括...
www.dbjr.com.cn/shouce/php5/zh/function... 2025-5-28