BIM專案中一些高可用程式碼
阿新 • • 發佈：2019-01-24
1.頁面顯示記憶體使用情況
<%@page contentType="text/html" pageEncoding="UTF-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>JVM memory</title> </head> <body> <% double total = (Runtime.getRuntime().totalMemory()) / (1024.0 * 1024); double max = (Runtime.getRuntime().maxMemory()) / (1024.0 * 1024); double free = (Runtime.getRuntime().freeMemory()) / (1024.0 * 1024); out.println("Java 虛擬機器試圖使用的最大記憶體量(當前JVM的最大可用記憶體)maxMemory(): " + max + "MB<br/>"); out.println("Java 虛擬機器中的記憶體總量(當前JVM佔用的記憶體總數)totalMemory(): " + total + "MB<br/>"); out.println("Java 虛擬機器中的空閒記憶體量(當前JVM空閒記憶體)freeMemory(): " + free + "MB<br/>"); out.println("JVM實際可用記憶體: " + (max - total + free) + "MB<br/>"); %> </body> </html>
2.通用action配置
<action name="*_*_*_*" class="{1}Action" method="{2}"> <result name="success">pages/{3}/{4}.jsp</result> <result name="error">pages/{3}/{4}.jsp</result> <result name="toquery" type="redirect">{4}.action</result> <result name="noprivilege">pages/login/noPrivilege.jsp</result> </action> <action name="*_*" class="{1}Action" method="{2}"> </action> <action name="*.*.*" class="{1}Action" method="{2}"> <result name="success">pages/{3}.jsp</result> <result name="error">pages/{3}.jsp</result> <result name="toindex">/pages/login/goPortal.jsp</result> </action>
3.ArrayUtil
public static Object[] unionArray(Object[] array1, Object[] array2, Object[] array3){ List<Object> tempList = new ArrayList<Object>(); for(int i=0; i<array1.length; i++){ tempList.add(array1[i]); } for(int i=0; i<array2.length; i++){ tempList.add(array2[i]); } for(int i=0; i<array3.length; i++){ tempList.add(array3[i]); } return tempList.toArray(); } public static Object[] unionArray(Object[] array1, Object[] array2){ List<Object> tempList = new ArrayList<Object>(); for(int i=0; i<array1.length; i++){ tempList.add(array1[i]); } for(int i=0; i<array2.length; i++){ tempList.add(array2[i]); } return tempList.toArray(); } public static Object[] insertNullObject(Object[] arr){ List<Object> objectList = new ArrayList<Object>(); for(int i=0; i<arr.length; i++){ objectList.add(arr[i]); objectList.add(""); } return objectList.toArray(); }