德生珠宝网网站源码

package com.jewel.tag.pagination; /** * <p>Title: www.entel.com.cn</p> * <p>Description: </p> * <p>Copyright: Copyright (c) 2003</p> * <p>Company: entel</p> * @author chendesheng * @version 1.0 */ import java.lang.reflect.*; import java.util.*; import javax.servlet.jsp.*; import javax.servlet.jsp.tagext.*; import org.apache.commons.collections.*; import org.apache.struts.util.*; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; public class PagerTag extends BodyTagSupport implements PagerInterface { protected Iterator iterator = null; protected int lengthCount = 0; protected int lengthValue = 0; protected MessageResources messages = MessageResources.getMessageResources( "org.apache.struts.taglib.logic.LocalStrings"); protected int offsetValue = 0; protected boolean started = false; protected Object collection = null; public Object getCollection() { return (this.collection); } public void setCollection(Object collection) { this.collection = collection; } protected String id = null; public String getId() { return (this.id); } public void setId(String id) { this.id = id; } public int getIndex() { if (started) { return (offsetValue + lengthCount - 1); } else { return (0); } } protected String indexId = null; public String getIndexId() { return (this.indexId); } public void setIndexId(String indexId) { this.indexId = indexId; } protected String length = null; public String getLength() { return (this.length); } public void setLength(String length) { this.length = length; } protected String name = null; public String getName() { return (this.name); } public void setName(String name) { this.name = name; } protected String offset = null; public String getOffset() { return (this.offset); } public void setOffset(String offset) { this.offset = offset; } protected String property = null; public String getProperty() { return (this.property); } public void setProperty(String property) { this.property = property; } protected String scope = null; public String getScope() { return (this.scope); } public void setScope(String scope) { this.scope = scope; } protected String type = null; public String getType() { return (this.type); } public void setType(String type) { this.type = type; } public int doStartTag() throws JspException { Object collection = this.collection; HttpServletRequest hsr = (HttpServletRequest) pageContext.getRequest(); HttpSession session = hsr.getSession(true); String sessionID = session.getId(); int AllCountElement = 0; if (collection == null) { collection = RequestUtils.lookup(pageContext, name, property, scope); } if (collection == null) { JspException e = new JspException(messages.getMessage( "iterate.collection")); RequestUtils.saveException(pageContext, e); throw e; } if (collection.getClass().isArray()) { try { iterator = Arrays.asList( (Object[]) collection).iterator(); //Common.AllElementCount = Array.getLength(collection); session.setAttribute(sessionID+"allcount",""+Array.getLength(collection)); AllCountElement = Array.getLength(collection); } catch (ClassCastException e) { int length = Array.getLength(collection); //Common.AllElementCount = length; session.setAttribute(sessionID+"allcount",""+length); AllCountElement = length; ArrayList c = new ArrayList(length); for (int i = 0; i < length; i++) { c.add(Array.get(collection, i)); } iterator = c.iterator(); } } else if (collection instanceof Collection) { iterator = ( (Collection) collection).iterator(); //Common.AllElementCount = ( (Collection) collection).size(); session.setAttribute(sessionID+"allcount",""+( (Collection) collection).size()); AllCountElement = ( (Collection) collection).size(); } else if (collection instanceof Iterator) { iterator = (Iterator) collection; //Common.AllElementCount = Array.getLength(collection); session.setAttribute(sessionID+"allcount",""+Array.getLength(collection)); AllCountElement = Array.getLength(collection); } else if (collection instanceof Map) { iterator = ( (Map) collection).entrySet().iterator(); //Common.AllElementCount = ( (Map) collection).size(); session.setAttribute(sessionID+"allcount",""+( (Map) collection).size()); AllCountElement = ( (Map) collection).size(); } else if (collection instanceof Enumeration) { iterator = IteratorUtils.asIterator( (Enumeration) collection); //Common.AllElementCount = Array.getLength(collection); session.setAttribute(sessionID+"allcount",""+Array.getLength(collection)); AllCountElement = Array.getLength(collection); } else { JspException e = new JspException(messages.getMessage("iterate.iterator")); RequestUtils.saveException(pageContext, e); throw e; } // set Attribute of the "offset" String tmpoffset = hsr.getParameter("offset"); if(tmpoffset != null && !tmpoffset.trim().equalsIgnoreCase("")){ setOffset(tmpoffset); }else{ try{ String position = (String)session.getAttribute(sessionID+"offset"); if(position == null||position.equalsIgnoreCase("")) position = "0"; setOffset(position); }catch(Exception ex){ setOffset("0"); } } offsetValue = Integer.parseInt(getOffset()); if (offsetValue < 0 || offsetValue>AllCountElement ) { offsetValue = 0; } // set out offset Value //Common.offset = offsetValue; session.setAttribute(sessionID+"offset",""+offsetValue); // set Attribute of the "length" String tmplength = hsr.getParameter("length"); if(tmplength != null && !tmplength.trim().equalsIgnoreCase("")) length = tmplength; if (length == null) { lengthValue = 0; } else { try { lengthValue = Integer.parseInt(length); } catch (NumberFormatException e) { Integer lengthObject = (Integer) RequestUtils.lookup(pageContext, sessionID+"length", "session"); if (lengthObject == null) { lengthValue = 0; } else { lengthValue = lengthObject.intValue(); } } } if (lengthValue < 0) { lengthValue = 0; } lengthCount = 0; // set out the "length" attribute to Common.pageLength //Common.pageLength = lengthValue; session.setAttribute(sessionID+"length",""+lengthValue); for (int i = 0; i < offsetValue; i++) { if (iterator.hasNext()) { iterator.next(); } } if (iterator.hasNext()) { Object element = iterator.next(); if (element == null) { pageContext.removeAttribute(id); } else { pageContext.setAttribute(id, element); } lengthCount++; started = true; if (indexId != null) { pageContext.setAttribute(indexId, new Integer(getIndex())); } return (EVAL_BODY_AGAIN); } else { return (SKIP_BODY); } } public int doAfterBody() throws JspException { if (bodyContent != null) { ResponseUtils.writePrevious(pageContext, bodyContent.getString()); bodyContent.clearBody(); } if ( (lengthValue > 0) && (lengthCount >= lengthValue)) { return (SKIP_BODY); } if (iterator.hasNext()) { Object element = iterator.next(); if (element == null) {